WorldWideScience

Sample records for cancer 1975-2004 featuring

  1. On the rising trends of incidence and prognosis for breast cancer patients diagnosed 1975-2004: a long-term population-based study in southeastern Netherlands.

    NARCIS (Netherlands)

    Louwman, W.J.; Voogd, A.C.; Dijck, J.A.A.M. van; Nieuwenhuijzen, G.A.P; Ribot, J.; Pruijt, J.F.M.; Coebergh, J.W.W.

    2008-01-01

    BACKGROUND: Much progress has been made in the early diagnosis and treatment of breast cancer. We have assessed the changing burden of this disease, by means of a comprehensive description of trends in incidence, survival, and mortality. METHODS: Data on breast cancer patients diagnosed between 1975

  2. Breast Cancers Between Mammograms Have Aggressive Features

    Science.gov (United States)

    Breast cancers that are discovered in the period between regular screening mammograms—known as interval cancers—are more likely to have features associated with aggressive behavior and a poor prognosis than cancers found via screening mammograms.

  3. Topological Features In Cancer Gene Expression Data

    OpenAIRE

    Lockwood, Svetlana; Krishnamoorthy, Bala

    2014-01-01

    We present a new method for exploring cancer gene expression data based on tools from algebraic topology. Our method selects a small relevant subset from tens of thousands of genes while simultaneously identifying nontrivial higher order topological features, i.e., holes, in the data. We first circumvent the problem of high dimensionality by dualizing the data, i.e., by studying genes as points in the sample space. Then we select a small subset of the genes as landmarks to construct topologic...

  4. FEATURES OF BILATERAL BREAST CANCER NODAL METASTASIS

    Directory of Open Access Journals (Sweden)

    Ye. A. Fesik

    2014-01-01

    hyalinosis of the stroma.The observed features of nodal metastasis associated with the morphological characteristics of the tumor tissue, may act as prognostic markers in determining the risk of lymph node metastases in women with bilateral breast cancer, which would have a significant aid in determining the prognosis of an individual patient, and, therefore, mean individual approach to the tactics of treatment of such patients.

  5. Main clinical epidemiological features of lung cancer

    International Nuclear Information System (INIS)

    A descriptive and cross-sectional study of 95 patients with lung cancer, discharged from Neumology Service at 'Dr Juan Bruno Zayas Alfonso' General Hospital in Santiago de Cuba, was carried out from January, 2008 to December, 2008 in order to identify the main clinical epidemiological features of the aforementioned disease. A malignancy predominance among men aged between 56 and 65 years old, belonging to urban areas and being heavy smoker (out of 30 cigarettes per day over 30 years ), was found. Those affected without a confirmed histological type and IV clinical stage epidermoid carcinoma were predominant. Most of them had the opportunity to be treated. Increasing and intensifying health promotion and disease prevention campaigns were recommended so as to achieve the population to avoid or quit the smoking habit. (author)

  6. Posterior breast cancer: Mammographic and ultrasonographic features

    Directory of Open Access Journals (Sweden)

    Janković Ana

    2013-01-01

    Full Text Available Background/Aim. Posterior breast cancers are located in the prepectoral region of the breast. Owing to this distinctive anatomical localization, physical examination and mammographic or ultrasonographic evaluation can be difficult. The purpose of the study was to assess possibilities of diagnostic mammography and breast ultrasonography in detection and differentiation of posterior breast cancers. Methods. The study included 40 women with palpable, histopathological confirmed posterior breast cancer. Mammographic and ultrasonographic features were defined according to Breast Imaging Reporting and Data System (BI-RADS lexicon. Results. Based on standard two-view mammography 87.5%, of the cases were classified as BI-RADS 4 and 5 categories, while after additional mammographic views all the cases were defined as BIRADS 4 and 5 categories. Among 96 mammographic descriptors, the most frequent were: spiculated mass (24.0%, architectural distortion (16.7%, clustered microcalcifications (12.6% and focal asymmetric density (12.6%. The differentiation of the spiculated mass was significantly associated with the possibility to visualize the lesion at two-view mammography (p = 0.009, without the association with lesion diameter (p = 0.083 or histopathological type (p = 0.055. Mammographic signs of invasive lobular carcinoma were significantly different from other histopathological types (architectural distortion, p = 0.003; focal asymmetric density, p = 0.019; association of four or five subtle signs of malignancy, p = 0.006. All cancers were detectable by ultrasonography. Mass lesions were found in 82.0% of the cases. Among 153 ultrasonographic descriptors, the most frequent were: irregular mass (15.7%, lobulated mass (7.2%, abnormal color Doppler signals (20.3%, posterior acoustic attenuation (18.3%. Ultrasonographic BI-RADS 4 and 5 categories were defined in 72.5% of the cases, without a significant difference among various histopathological types (p = 0

  7. Hybrid Local Feature Selection In DNA Analysis Based Cancer Classification

    OpenAIRE

    Akila, M.; Mr.S.Senthamarai kannan

    2012-01-01

    Feature selection, as a preprocessing step to machine learning, is effective in reducing dimensionality, removing irrelevant data and increasing learning accuracy. The development of microarray dataset technology has supplied a large volume of data to many fields. In particular, it has been applied to prediction and diagnosis of cancer, so that it helps us to exactly predict and diagnose cancer. To precisely classify cancer we have to select genes related to cancer. The challenging task in ca...

  8. feature - Office of Cancer Clinical Proteomics Research

    Science.gov (United States)

    "Cancer is a disease of the genome," noted Lynda Chin, M.D., professor of dermatology, Harvard Medical School and Dana-Farber Cancer Institute. "And understanding the impact of genomic changes in the proteome is critically important for converting genomic knowledge into something that a clinician can use on their patients."

  9. Clinicopathological features and prognosis of gastric cancer in young patients

    OpenAIRE

    Liu, Shushang; Feng, Fan; Xu, Guanghui; Liu, Zhen; Tian, Yangzi; Guo, Man; Lian, Xiao; Cai, Lei; Fan, Daiming; Zhang, Hongwei

    2016-01-01

    Background The clinicopathological features and prognosis of gastric cancer in young patients are both limited and controversial. Therefore, the aim of this study was to define the clinicopathological features and prognosis of gastric cancer in young patients after curative resection. Methods From May 2008 to December 2014, 198 young patients (age ≤ 40 years) and 1096 middle-aged patients (55 ≤ age ≤ 64 years) were enrolled in this study. The clinicopathological features and prognosis of gast...

  10. Biomolecular features of clinical relevance in breast cancer

    NARCIS (Netherlands)

    Daidone, M.G.; Paradiso, A.; Gion, M.; Harbeck, N.; Sweep, C.G.J.; Schmitt, M.

    2004-01-01

    Breast cancer is a heterogeneous disease and its consequent complexity is a major challenge for physicians and biologists. Notwithstanding its potential curability due to the availability of treatment modalities which are effective in the presence of favourable clinical or pathobiological features,

  11. Clinicopathological features of early gastric cancer with duodenal invasion

    Institute of Scientific and Technical Information of China (English)

    Tsutomu Namikawa; Kazuhiro Hanazaki

    2009-01-01

    The incidence of early gastric cancer (EGC) with duodenal invasion is ext remely low, al though advanced gastric cancer that arises in the antrum occasionally invades the duodenum. We investigated the clinicopathological features of EGC with duodenal invasion and provided strategies for clinical management. A Medline search was performed using the keyword "early gastric cancer" and "duodenal invasion". Additional articles were obtained from references within the papers identified by the Medline search. We revealed that EGC with duodenal invasion was of the superficial spreading type of tumor. Tumors > 60 mm in size invaded the duodenum more extensively, and the distance of duodenal invasion from the pyloric ring was further in the elevated type than in the depressed type of tumor. There was no significant difference between the length of duodenal invasion and the histological type of the tumor. Gastric cancer located adjacent to the pyloric ring, even if cancer invasion was confined to the mucosa or submucosa, was more likely to invade the duodenum. The present study reveals that the elevated type of EGC is associated with more extensive duodenal invasion when the tumor size is > 60 mm, thus highlighting the importance of identification of duodenal invasion in these cases. We also reveal that sufficient duodenal resection with a cancer-free distal surgical margin should be performed in cases of duodenal invasion.

  12. The diagnostic value of transrectal ultrasonographic features in prostate cancer

    Institute of Scientific and Technical Information of China (English)

    Xiaoli Zou; Guang Yang; Hui Wang

    2012-01-01

    Objective: The aim of the study was to detect the valuable ultrasonographic features in diagnosing prostate cancer.Methods: The patients who underwent transrectal ultrasound in the period from May 2005 to October 2009 at the 1st Affiliated Hospital of Dalian Medical University, China, were included, with needle biopsy diagnosis for patients with the prostate cancer and prostatic hyperplasia.Seventy-four cases of prostate cancer were diagnosed as adenocarcinoma, compared with 51 cases diagnosed as prostatic hyperplasia.Retrospective analysis of patients with transrectal ultrasound were done, comparing the difference between the two groups in the echo level (hypoechogenic), outlines (ill-defined margin), posterior acoustic attenuation, periphery halo, microcalcification incidence, the blood supply level, peak systolic velocity (Vs) and resistance index (RI).Results: The ratios of hypoechogenic lesions in the prostate cancer group and prostatic hyperplasia group were 56.76% and 35.90%, respectively (P 0.05).Vs of the two groups were (44.00 ± 15.30) cm/s and (17.32 ± 4.65) cm/s, respectively (P < 0.05).RI of the two groups were 0.76 ± 0.10, and 0.51 ± 0.03 respectively (P < 0.05).The significant correlation was designated in the blood supply level between the prostate cancer group and prostatic hyperplasia group (r = -0.388, P < 0.01).Higher revascularization grade was seen in the prostate cancer group compared to benign prostatic hyperplasia group.Conclusion: (1) The significant roles for diagnosing prostate cancer are hypoechogenic, irregular outlines, spiculation, microcalcification, high revascularization grade, posterior acoustic attenuation, high Vs and high RI.(2) It could not help in diagnosing prostate cancer with ultrasonographic periphery halo or not.

  13. Clinical Features of Liver Cancer with Cerebral Hemorrhage.

    Science.gov (United States)

    Lu, Qiuhong; Chen, Li; Zeng, Jinsheng; Huang, Gelun; Qin, Chao; Cheng, Daobin; Yu, Lixia; Liang, Zhijian

    2016-01-01

    BACKGROUND Cerebral hemorrhage is common in patients with cancer, but the clinical features and pathogenesis of liver cancer patients with cerebral hemorrhage are not well known. MATERIAL AND METHODS Liver cancer patients who developed cerebral hemorrhage were recruited from the First Affiliated Hospital of Guangxi Medical University between January 2003 and December 2014. We retrospectively analyzed clinical presentations, results of laboratory tests, and imaging examinations. The clinical features and pathogenesis were summarized. RESULTS Among 11133 patients with liver cancer, 9 patients (0.08%), including 3 females and 6 males met the inclusion criteria. The age range was 48-73 years and the average age was 61.67±8.97 years. Five patients did not have traditional hemorrhage risk factors and 4s had the risk factors; however, all had developed hepatocellular carcinoma, and 3 had developed metastasis. All 9 patients showed elevated tumor markers: an increased AFP level was detected in 6 patients, coagulation dysfunctions in 8 patients, and abnormal liver functions in 6 patients. Five patients had developed cerebral hemorrhagic lesions in the lobes of their brains, while hemorrhagic lesions in the basal ganglia occurred in 3 patients and in the brainstem in only 1 patient. Four patients had clear consciousness, while 5 patients were in coma and showed poor prognosis. CONCLUSIONS Patients who have liver cancer complicated with cerebral hemorrhage usually lack traditional risk factors of cerebral hemorrhage. The site of cerebral hemorrhage is often detected in the lobes of the brain. Coagulation dysfunctions might be the main pathogenesis of liver cancer complicated with cerebral hemorrhage. PMID:27209058

  14. Clinical Features of Liver Cancer with Cerebral Hemorrhage

    Science.gov (United States)

    Lu, Qiuhong; Chen, Li; Zeng, Jinsheng; Huang, Gelun; Qin, Chao; Cheng, Daobin; Yu, Lixia; Liang, Zhijian

    2016-01-01

    Background Cerebral hemorrhage is common in patients with cancer, but the clinical features and pathogenesis of liver cancer patients with cerebral hemorrhage are not well known. Material/Methods Liver cancer patients who developed cerebral hemorrhage were recruited from the First Affiliated Hospital of Guangxi Medical University between January 2003 and December 2014. We retrospectively analyzed clinical presentations, results of laboratory tests, and imaging examinations. The clinical features and pathogenesis were summarized. Results Among 11133 patients with liver cancer, 9 patients (0.08%), including 3 females and 6 males met the inclusion criteria. The age range was 48–73 years and the average age was 61.67±8.97 years. Five patients did not have traditional hemorrhage risk factors and 4s had the risk factors; however, all had developed hepatocellular carcinoma, and 3 had developed metastasis. All 9 patients showed elevated tumor markers: an increased AFP level was detected in 6 patients, coagulation dysfunctions in 8 patients, and abnormal liver functions in 6 patients. Five patients had developed cerebral hemorrhagic lesions in the lobes of their brains, while hemorrhagic lesions in the basal ganglia occurred in 3 patients and in the brainstem in only 1 patient. Four patients had clear consciousness, while 5 patients were in coma and showed poor prognosis. Conclusions Patients who have liver cancer complicated with cerebral hemorrhage usually lack traditional risk factors of cerebral hemorrhage. The site of cerebral hemorrhage is often detected in the lobes of the brain. Coagulation dysfunctions might be the main pathogenesis of liver cancer complicated with cerebral hemorrhage. PMID:27209058

  15. Overexpression of leptin and leptin receptors in breast cancer positively correlates with clinicopathological features

    Institute of Scientific and Technical Information of China (English)

    XIA Xiang-hou; GU Jun-chao; BAI Qing-yang; YU Wei

    2009-01-01

    @@ Obesity has been reported to increase postmenopausal breast cancer risk by 30% to 50%, and obese breast cancer patients have been shown to present more aggressive breast cancer pathological features.

  16. Breast Cancer Detection with Gabor Features from Digital Mammograms

    Directory of Open Access Journals (Sweden)

    Yufeng Zheng

    2010-01-01

    Full Text Available A new breast cancer detection algorithm, named the “Gabor Cancer Detection” (GCD algorithm, utilizing Gabor features is proposed. Three major steps are involved in the GCD algorithm, preprocessing, segmentation (generating alarm segments, and classification (reducing false alarms. In preprocessing, a digital mammogram is down-sampled, quantized, denoised and enhanced. Nonlinear diffusion is used for noise suppression. In segmentation, a band-pass filter is formed by rotating a 1-D Gaussian filter (off center in frequency space, termed as “Circular Gaussian Filter” (CGF. A CGF can be uniquely characterized by specifying a central frequency and a frequency band. A mass or calcification is a space-occupying lesion and usually appears as a bright region on a mammogram. The alarm segments (suspicious to be masses/calcifications can be extracted out using a threshold that is adaptively decided upon the histogram analysis of the CGF-filtered mammogram. In classification, a Gabor filter bank is formed with five bands by four orientations (horizontal, vertical, 45 and 135 degree in Fourier frequency domain. For each mammographic image, twenty Gabor-filtered images are produced. A set of edge histogram descriptors (EHD are then extracted from 20 Gabor images for classification. An EHD signature is computed with four orientations of Gabor images along each band and five EHD signatures are then joined together to form an EHD feature vector of 20 dimensions. With the EHD features, the fuzzy C-means clustering technique and k-nearest neighbor (KNN classifier are used to reduce the number of false alarms. The experimental results tested on the DDSM database (University of South Florida show the promises of GCD algorithm in breast cancer detection, which achieved TP (true positive rate = 90% at FPI (false positives per image = 1.21 in mass detection; and TP = 93% at FPI = 1.19 in calcification detection.

  17. Quantitative imaging features to predict cancer status in lung nodules

    Science.gov (United States)

    Liu, Ying; Balagurunathan, Yoganand; Atwater, Thomas; Antic, Sanja; Li, Qian; Walker, Ronald; Smith, Gary T.; Massion, Pierre P.; Schabath, Matthew B.; Gillies, Robert J.

    2016-03-01

    Background: We propose a systematic methodology to quantify incidentally identified lung nodules based on observed radiological traits on a point scale. These quantitative traits classification model was used to predict cancer status. Materials and Methods: We used 102 patients' low dose computed tomography (LDCT) images for this study, 24 semantic traits were systematically scored from each image. We built a machine learning classifier in cross validation setting to find best predictive imaging features to differentiate malignant from benign lung nodules. Results: The best feature triplet to discriminate malignancy was based on long axis, concavity and lymphadenopathy with average AUC of 0.897 (Accuracy of 76.8%, Sensitivity of 64.3%, Specificity of 90%). A similar semantic triplet optimized on Sensitivity/Specificity (Youden's J index) included long axis, vascular convergence and lymphadenopathy which had an average AUC of 0.875 (Accuracy of 81.7%, Sensitivity of 76.2%, Specificity of 95%). Conclusions: Quantitative radiological image traits can differentiate malignant from benign lung nodules. These semantic features along with size measurement enhance the prediction accuracy.

  18. How do patient and hospital features influence outcomes in small-cell lung cancer in England?

    OpenAIRE

    Rich, A L; Tata, L J; Free, C M; Stanley, R. A.; Peake, M D; Baldwin, D. R.; Hubbard , R B

    2011-01-01

    Background: Our aim was to systematically determine how features of patients and hospitals influence access to chemotherapy and survival for people with small-cell lung cancer in England. Methods: We linked the National Lung Cancer Audit and Hospital Episode Statistics and used multiple logistic and Cox regression analyses to assess the influence of patient and hospital features on small-cell lung cancer outcomes. Results: There were 7845 patients with histologically proven small-cell lung ca...

  19. Distinct Clinic-Pathological Features of Early Differentiated-Type Gastric Cancers after Helicobacter pylori Eradication

    OpenAIRE

    Noriyuki Horiguchi; Tomomitsu Tahara; Tomohiko Kawamura; Masaaki Okubo; Takamitsu Ishizuka; Yoshihito Nakagawa; Mitsuo Nagasaka; Tomoyuki Shibata; Naoki Ohmiya

    2016-01-01

    Background. Gastric cancer is discovered even after successful eradication of H. pylori. We investigated clinic pathological features of early gastric cancers after H. pylori eradication. Methods. 51 early gastric cancers (EGCs) from 44 patients diagnosed after successful H. pylori eradication were included as eradication group. The clinic-pathological features were compared with that of 131 EGCs from 120 patients who did not have a history of H. pylori eradication (control group). Results. C...

  20. Atrophy of the Tongue as the Presenting Feature of Metastatic Prostate Cancer

    OpenAIRE

    Abdullah, Zreik; Darrad, Maitrey; Pathak, Sanjeev

    2011-01-01

    Prostate cancer is the most frequently diagnosed solid organ cancer in men and is the second leading cause of cancer-related deaths in men in the United Kingdom. Commonly, it metastasizes to bones and lymph nodes, however, in advanced hormonerefractory disease it may involve the skull base leading to associated cranial nerve palsies. Cranial nerve palsy as the presenting feature of advanced hormone-sensitive prostate cancer is extremely rare. To the best of our knowledge, we report the first ...

  1. Correlative Study on MRI Morphologic Features,Pathology, and Molecular Biology of Breast Cancer

    Institute of Scientific and Technical Information of China (English)

    Rong Chen; Shuigen Gong; Weiguo Zhang; Jinhua Chen; Shuangwu He; Baohua Liu; Zengpeng Li

    2005-01-01

    OBJECTIVE To investigate the correlation among MRI morphologic features,pathology, and molecular biology of breast cancer.METHORDS MRI was used to analyze the morphologic features of breast cancers of 78 patients before operation. The mastectomy specimens of the breast neoplasms were immunohistochemically stained, and the expression of the estrogen (ER), progesterone receptor (PR), C-erbB-2, P53, and the distribution of microvessel density (MVD) measured. The pathologic results were compared with the MRI features.RESULTS Among the 80 breast cancers, ER positive expression was positively correlated with the spicular contour of breast cancers (P<0.01),while showing a significant inverse correlation with the T-stage (P<0.05). CerbB-2 and P53 positive expression were positively correlated with the necrotic center of the cancers (P<0.05). The expression of PR was not significantly correlated with the spicular contour, obscure margin, necrotic center, and T-stage of these cancers (P>0.05). Among 41 breast cancers examined with dynamic contrast enhanced MR, there was a positive correlation between the spatial distribution of the contrast agent and MVD(P<0.01).CONCLUSION To a certain extent there is some correlation among the MRI morphologic features, pathology, and molecular biological factors in breast cancer. The biological behavior and prognosis of breast cancer can be assessed based on MRI features.

  2. Senescent cells harbour features of the cancer epigenome

    OpenAIRE

    Cruickshanks, Hazel A; McBryan, Tony; Nelson, David M.; VanderKraats, Nathan D.; Shah, Parisha P.; van Tuyn, John; Rai, Taranjit Singh; Brock, Claire; Donahue, Greg; Dunican, Donncha S; Drotar, Mark E.; Meehan, Richard R.; Edwards, John R.; Berger, Shelley L.; Adams, Peter D.

    2013-01-01

    Altered DNA methylation and associated destabilization of genome integrity and function is a hallmark of cancer. Replicative senescence is a tumour suppressor process that imposes a limit on the proliferative potential of normal cells that all cancer cells must bypass. Here we show by whole-genome single-nucleotide bisulfite sequencing that replicative senescent human cells exhibit widespread DNA hypomethylation and focal hypermethylation. Hypomethylation occurs preferentially at gene-poor, l...

  3. Human prostate cancer stem cells: new features unveiled

    Institute of Scientific and Technical Information of China (English)

    Yuting Sun; Wei-Qiang Gao

    2011-01-01

    @@ Cancer stem cells (CSCs) are a rare sub-population of phenotypically distinct cancer cells exhibiting stem cell characteristics.They are tumourigenic, meanwhile capable of self-renewal and forming differentiated progenies.CSCs are believed to be resistant to the standard therapeutics, and provide the cell reservoir for tumour initiation.1 Understanding CSCs or in another word, tumour-initiating cells, is of critical therapeutic importance.

  4. Colorectal cancer complicated by perforation. Specific features of surgical tactics

    Directory of Open Access Journals (Sweden)

    S. N. Shchaeva

    2015-01-01

    Full Text Available Objective: to assess the immediate results of surgical interventions for colorectal cancer complicated by perforation.Materials and methods. The immediate results of surgical treatment were retrospectively analyzed in 56 patients with colorectal cancer complicated by perforated colon cancer, who had been treated at Smolensk surgical hospitals in 2001 to 2013. Patients with diastatic perforation of the colon in the presence of decompensated obturation intestinal obstruction of tumor genesis were not included into this investigation.Results. The immediate results of uni- and multistage surgical interventions were analyzed in relation to the extent of peritonitis and the stage of colon cancer. More satisfactory immediate results were observed after multistage surgical treatment. Following these interventions, a fatal outcome of disseminated peritonitis in the presence of performed colorectal cancer was recorded in 8 (53.3 % cases whereas after symptomatic surgery there were 11 (67.8 % deaths. A fatal outcome was noted in 1 case (7.7 % after multistage surgery.Discussion. The results of surgical treatment in the patients with perforated colorectal cancer are directly related to the degree of peritonitis and the choice of surgical tactics.

  5. Nasopharyngeal carcinoma: Imaging features of unusual cancer in children

    Directory of Open Access Journals (Sweden)

    Ayda A. Youssef

    2015-12-01

    Conclusion: Pediatric NPC is generally not suspected clinically until late into the disease process. Awareness that NPC can occur in children should prompt careful evaluation for distinctive radiographic features. Earlier diagnosis may then direct the patient to timely appropriate therapy when these key radiographic features are present and recognized.

  6. [Particular features of lymph dissection in operations for gastric cancer].

    Science.gov (United States)

    Iaitskiĭ, A N; Danilov, I N

    2008-01-01

    In order to optimize the technique of lymph dissection, a method of intraoperative mapping of lymph outflow tracts was used with a lymphotropic dye Blue patente V. It allowed better orientation during lymphodissection in operations for gastric cancer. The detection and investigation of the "signal" lymph node as the most probable object of lymphogenic metastazing can improve the accuracy of postoperative staging of gastric cancer. Visualization of the lymph nodes in the preparation made it possible to increase the number of lymph nodes sent for histological investigation. PMID:18522180

  7. [Particular features of lymph dissection in operations for gastric cancer].

    Science.gov (United States)

    Iaitskiĭ, A N; Danilov, I N

    2008-01-01

    In order to optimize the technique of lymph dissection, a method of intraoperative mapping of lymph outflow tracts was used with a lymphotropic dye Blue patente V. It allowed better orientation during lymphodissection in operations for gastric cancer. The detection and investigation of the "signal" lymph node as the most probable object of lymphogenic metastazing can improve the accuracy of postoperative staging of gastric cancer. Visualization of the lymph nodes in the preparation made it possible to increase the number of lymph nodes sent for histological investigation.

  8. Management and performance features of cancer centers in Europe: A fuzzy-set analysis

    NARCIS (Netherlands)

    Wind, Anke; Lobo, Mariana Fernandes; Dijk, van Joris; Lepage-Nefkens, Isabelle; Laranja-Pontes, Jose; Conceicao Goncalves, da Vitor; Harten, van Wim; Rocha-Goncalves, Francisco Nuno

    2016-01-01

    The specific aim of this study is to identify the performance features of cancer centers in the European Union by using a fuzzy-set qualitative comparative analysis (fsQCA). The fsQCA method represents cases (cancer centers) as a combination of explanatory and outcome conditions. This study uses dat

  9. Inflammation, Autophagy, and Obesity: Common Features in the Pathogenesis of Pancreatitis and Pancreatic Cancer

    OpenAIRE

    Gukovsky, Ilya; Ning LI; Todoric, Jelena; Gukovskaya, Anna; Karin, Michael

    2013-01-01

    Inflammation and autophagy are cellular defense mechanisms. When these processes are deregulated (deficient or overactivated) they produce pathologic effects, such as oxidative stress, metabolic impairments, and cell death. Unresolved inflammation and disrupted regulation of autophagy are common features of pancreatitis and pancreatic cancer. Furthermore, obesity, a risk factor for pancreatitis and pancreatic cancer, promotes inflammation and inhibits or deregulates autophagy, creating an env...

  10. X-ray features of pulmonary metastases of thyroid cancer

    Energy Technology Data Exchange (ETDEWEB)

    Lutsenko, I.V. (Nauchno-Issledovatel' skij Onkologicheskij Inst., Moscow (USSR))

    Metastases of thyroid cancer to the chest cavity organs were detected in 19.4%. They were found most frequently in the pulmonary tissue (75.8%), in the mediastinal lymph nodes (57.9%), less frequently in the lymph nodes of the roots of the lungs (30.4%) and very rarely in the pleura (2.6%). X-ray signs of metastases are identical for all histological structures of thyroid cancer. The most typical are multiple lesions (91.8%). The nodular form is found in 74.5%, the nodal form in 17.2.%. Solitary metastases and cancerous lymphangitis are rarely noted (7.2 and 0.9% respectively. The regression of metastases, spontaneous pneumothorax and pneumonia are rarely observed as well (1.8, 0.9 and 1.8%) respectively). The doubling time of the size of metastatic tumors of thyroid cancer ranges from 52 to 379 days. The use of radioactive iodine and hormones inhibits their growth rates.

  11. X-ray features of pulmonary metastases of thyroid cancer

    International Nuclear Information System (INIS)

    Metastases of thyroid cancer to the chest cavity organs were detected in 19.4%. They were found most frequently in the pulmonary tissue (75.8%), in the mediastinal lymph nodes (57.9%), less frequently in the lymph nodes of the roots of the lungs (30.4%) and very rarely in the pleura (2.6%). X-ray signs of metastases are identical for all histological structures of thyroid cancer. The most typical are multiple lesions (91.8%). The nodular form is found in 74.5%, the nodal form in 17.2.%. Solitary metastases and cancerous lymphangitis are rarely noted (7.2 and 0.9% respectively. The regression of metastases, spontaneous pneumothorax and pneumonia are rarely observed as well (1.8, 0.9 and 1.8%) respectively). The doubling time of the size of metastatic tumors of thyroid cancer ranges from 52 to 379 days. The use of radioactive iodine and hormones inhibits their growth rates

  12. Cancer metabolic reprogramming:impor tance, main features, and potentials for precise targeted anti-cancer therapies

    Institute of Scientific and Technical Information of China (English)

    Liem Minh Phan; Sai-Ching Jim Yeung; Mong-Hong Lee

    2014-01-01

    Cancer cells are well documented to rewire their metabolism and energy production networks to support and enable rapid proliferation, continuous growth, survival in harsh conditions, invasion, metastasis, and resistance to cancer treatments. Since Dr. Otto Warburg’s discovery about altered cancer cell metabolism in 1930, thousands of studies have shed light on various aspects of cancer metabolism with a common goal to find new ways for effectively eliminating tumor cells by targeting their energy metabolism. hTis review highlights the importance of the main features of cancer metabolism, summarizes recent remarkable advances in this ifeld, and points out the potentials to translate these scientiifc ifndings into life-saving diagnosis and therapies to help cancer patients.

  13. Distinct Clinic-Pathological Features of Early Differentiated-Type Gastric Cancers after Helicobacter pylori Eradication.

    Science.gov (United States)

    Horiguchi, Noriyuki; Tahara, Tomomitsu; Kawamura, Tomohiko; Okubo, Masaaki; Ishizuka, Takamitsu; Nakagawa, Yoshihito; Nagasaka, Mitsuo; Shibata, Tomoyuki; Ohmiya, Naoki

    2016-01-01

    Background. Gastric cancer is discovered even after successful eradication of H. pylori. We investigated clinic pathological features of early gastric cancers after H. pylori eradication. Methods. 51 early gastric cancers (EGCs) from 44 patients diagnosed after successful H. pylori eradication were included as eradication group. The clinic-pathological features were compared with that of 131 EGCs from 120 patients who did not have a history of H. pylori eradication (control group). Results. Compared with control group, clinic-pathological features of eradication group were characterized as depressed (p EGC after H. pylori eradication are depressed, reddish appearances, which should be treated as a caution because histological diagnosis of cancerous tissue is sometimes difficult by endoscopic biopsy. PMID:27212944

  14. Risk of Breast Cancer in Women with False-Positive Results according to Mammographic Features.

    Science.gov (United States)

    Castells, Xavier; Torá-Rocamora, Isabel; Posso, Margarita; Román, Marta; Vernet-Tomas, Maria; Rodríguez-Arana, Ana; Domingo, Laia; Vidal, Carmen; Baré, Marisa; Ferrer, Joana; Quintana, María Jesús; Sánchez, Mar; Natal, Carmen; Espinàs, Josep A; Saladié, Francina; Sala, María

    2016-08-01

    Purpose To assess the risk of breast cancer in women with false-positive screening results according to radiologic classification of mammographic features. Materials and Methods Review board approval was obtained, with waiver of informed consent. This retrospective cohort study included 521 200 women aged 50-69 years who underwent screening as part of the Spanish Breast Cancer Screening Program between 1994 and 2010 and who were observed until December 2012. Cox proportional hazards regression analysis was used to estimate the age-adjusted hazard ratio (HR) of breast cancer and the 95% confidence interval (CI) in women with false-positive mammograms as compared with women with negative mammograms. Separate models were adjusted for screen-detected and interval cancers and for screen-film and digital mammography. Time without a breast cancer diagnosis was plotted by using Kaplan-Meier curves. Results When compared with women with negative mammograms, the age-adjusted HR of cancer in women with false-positive results was 1.84 (95% CI: 1.73, 1.95; P breast cancer, particularly women who had calcifications at mammography. Women who had more than one examination with false-positive findings and in whom the mammographic features changed over time had a highly increased risk of breast cancer. Previous mammographic features might yield useful information for further risk-prediction models and personalized follow-up screening protocols. (©) RSNA, 2016 Online supplemental material is available for this article. PMID:26878225

  15. Computerized lung cancer malignancy level analysis using 3D texture features

    Science.gov (United States)

    Sun, Wenqing; Huang, Xia; Tseng, Tzu-Liang; Zhang, Jianying; Qian, Wei

    2016-03-01

    Based on the likelihood of malignancy, the nodules are classified into five different levels in Lung Image Database Consortium (LIDC) database. In this study, we tested the possibility of using threedimensional (3D) texture features to identify the malignancy level of each nodule. Five groups of features were implemented and tested on 172 nodules with confident malignancy levels from four radiologists. These five feature groups are: grey level co-occurrence matrix (GLCM) features, local binary pattern (LBP) features, scale-invariant feature transform (SIFT) features, steerable features, and wavelet features. Because of the high dimensionality of our proposed features, multidimensional scaling (MDS) was used for dimension reduction. RUSBoost was applied for our extracted features for classification, due to its advantages in handling imbalanced dataset. Each group of features and the final combined features were used to classify nodules highly suspicious for cancer (level 5) and moderately suspicious (level 4). The results showed that the area under the curve (AUC) and accuracy are 0.7659 and 0.8365 when using the finalized features. These features were also tested on differentiating benign and malignant cases, and the reported AUC and accuracy were 0.8901 and 0.9353.

  16. Enhanced cancer recognition system based on random forests feature elimination algorithm.

    Science.gov (United States)

    Ozcift, Akin

    2012-08-01

    Accurate classifiers are vital to design precise computer aided diagnosis (CADx) systems. Classification performances of machine learning algorithms are sensitive to the characteristics of data. In this aspect, determining the relevant and discriminative features is a key step to improve performance of CADx. There are various feature extraction methods in the literature. However, there is no universal variable selection algorithm that performs well in every data analysis scheme. Random Forests (RF), an ensemble of trees, is used in classification studies successfully. The success of RF algorithm makes it eligible to be used as kernel of a wrapper feature subset evaluator. We used best first search RF wrapper algorithm to select optimal features of four medical datasets: colon cancer, leukemia cancer, breast cancer and lung cancer. We compared accuracies of 15 widely used classifiers trained with all features versus to extracted features of each dataset. The experimental results demonstrated the efficiency of proposed feature extraction strategy with the increase in most of the classification accuracies of the algorithms. PMID:21567124

  17. Intraoral sonographic features of tongue cancer after radical radiotherapy

    Energy Technology Data Exchange (ETDEWEB)

    Chikui, Toru E-mail: chikui@rad.dent.kyushu-u.ac.jp; Kawazu, Toshiyuki; Nakamura, Katsumasa; Urashima, Yuusuke; Yuasa, Kenji; Kanda, Shigenobu

    2004-12-01

    Purpose: The purpose was to illustrate the sonographic changes of tongue cancer after radical radiotherapy. Materials and methods: In 24 patients with tongue cancer treated by interstitial brachytherapy (BRT) (uneventful recovery n=16, recurrence n=5, severe soft tissue complication n=3), follow-up examination were performed and both the margin and the vascular pattern were retrospectively assessed. We basically performed US examination at least once every 3 months after BRT within 1 year during follow-up period. Results: In the healing process, intraoral sonography shows an unclear margin immediately after brachytherapy and a transient increase of the vascularity lasted within 6 months after BRT, followed by a decrease in the vascularity. The large difference in echogenicity between the primary site and the surrounding tissue and the increased difference suggested the possibility of either radiation ulceration or recurrence. Conclusion: Intraoral sonography could depict the sequence changes of the tongue after BRT, and it was thus useful to confirm the clinical findings of either radiation ulcers or recurrence.

  18. A Retrospective Study on Pathologic Features and Racial Disparities in Prostate Cancer

    Directory of Open Access Journals (Sweden)

    Steven A. Bigler

    2011-01-01

    Full Text Available We reviewed more than 3,000 pathology reports on prostate cancer-related surgical specimens and analyzed racial disparities in histological and clinical features at the time of initial biopsy, diagnosis of prostate cancer, and prostatectomy, as well as in characteristics of tumor evolution between African American and Caucasian patients. As compared to Caucasians, African American patients had younger age, higher cancer detection rate, higher Gleason score of prostate cancer, and more bilateral involvement of the prostate. African Americans also had larger prostates, greater volume of tumor, and more positive margins. The diagnosis of HGPIN or ASAP in prostate biopsies and African American race conferred an increased risk of diagnosis of prostate cancer. The interval between prior noncancerous biopsy and the subsequent biopsy with diagnosis of prostate cancer was shorter in men with HGPIN, with ASAP, or of African American race.

  19. Relationship between expression of EGFR in gastric cancer tissue and clinicopathological features

    Institute of Scientific and Technical Information of China (English)

    Ming Gao; Xiu-Ju Liang; Zi-Sen Zhang; Wang Ma; Zhi-Wei Chang; Ming-Zhi Zhang

    2013-01-01

    Objective: To investigate the relationship between the expression of epidermal growth factor receptor (EGFR) in gastric cancer and the clinicopathological features and prognosis. Methods: A total of 78 paraffin specimens of gastric cancer operation were collected. The immunohistochemical method was used to detect the expression of EGFR in 78 cases of gastric cancer and 20 cases of adjacent normal tissue. The relationship between the high expression of EGFR and clinicopathological features was analyzed. Results: EGFR positive expression rate in the 78 cases of gastric cancer tissue was 57.7 %( 45/78), while EGFR was not expressed in 20 cases of adjacent normal tissue. The high EGFR expression was positively correlated with the position of gastric cancer, tumor size, cell differentiation, invasive depth, lymph node metastasis and TNM staging, yet having no obvious relation with gender or age. Conclusions: EGFR expression level in gastric cancer is closely related to the incidence and development of gastric cancer, which can provide a theoretical basis for the targeted therapy for gastric cancer with EGFR as the target.

  20. Ovarian and Breast Cancer Spheres Are Similar in Transcriptomic Features and Sensitive to Fenretinide

    Directory of Open Access Journals (Sweden)

    Haiwei Wang

    2013-01-01

    Full Text Available Cancer stem cells (CSCs are resistant to chemotherapy and are ability to regenerate cancer cell populations, thus attracting much attention in cancer research. In this report, we first demonstrated that sphere cells from ovarian cancer cell line A2780 shared many features of CSCs, such as resistance to cisplatin and able to initiate tumors in an efficient manner. Then, we conducted cDNA microarray analysis on spheres from ovarian A2780 cells, and from breast MCF7 and SUM159 cells, and found that molecular pathways underlying spheres from these cancer cell lines were similar to a large extent, suggesting that similar mechanisms are involved in the genesis of CSCs in both ovarian and breast cancer types. In addition, we showed that spheres from these cancer types were highly sensitive to fenretinide, a stimulus of oxidative stress-mediated apoptosis in cancer cells. Thus, our results not only provide important insights into mechanisms underlying CSCs in ovarian and breast cancer, but also lead to the development of more sophisticated protocols of cancer therapy in near future.

  1. Diagnostic features of lung metastases differentiated thyroid cancer

    Directory of Open Access Journals (Sweden)

    T. M. Geliashvili

    2015-01-01

    Full Text Available Background. The worldwide increasing incidence of thyroid cancer (TC is mainly due to a rise in its major form of differentiated TC (DTC: papillary. Most patients with DTC have a good prognosis; 10-year survival overall rates are as high as 85 %, but not greater than 40 % in a group of patients with distant metastases. At the same time, the lung is the most frequent target for distant metastases, accounting for 70 % of all sites.Objective: to estimate and compare the capabilities of different diagnostic techniques to detect lung metastases of DTC. Materials and methods. The results of diagnosing lung metastases were retrospectively analyzed in 36 patients (33 women and 3 men; mean age 53 years with DTC (29 patients with papillary TC and 7 with follicular TC treated at the department of radiotherapy with systemic therapy, Chelyabinsk Regional Clinical Oncology Center from 2011 to 2014.Results. Chest X-ray could reveal pulmonary metastases in 13 (36 % patients; lung pathology foci were absent in 23 (64 % patients. 131I whole-body scintigraphy (WBS proved to be of informative value in 24 (66.7 % patients, it displayed no increased accumulation of the radiopharmaceutical in the lung of 12 (33.3 % cases. Multislice spiral computed tomography (MSCT of the chest was carried out in 22 (61 % patients; out of them 21 (95.5 % were found to have 1.4-to-20-mm lung cancer foci. 18Fluorodeoxyglucose (18FDG positron emission tomography / computed tomography (PET / CT was performed in 18 (50 % patients, which showed 3–26-mm lung pathology foci in all the patents; out of them 16 (88.9 % were detected to have metastases owing to the CT component of this method. Thus, the highest sensitivity was exhibited by MSCT (95.5 %, 18FDG PET / CT (100 % due to its CT component, and 131I WBS (66.7 %.Conclusion. When lung metastases of DTC are suspected, 1 chest X-ray should be used as a screening test; 2 131I WBS should be performed in all patients; 3 MSCT of the chest is

  2. NOTE: Prostate cancer multi-feature analysis using trans-rectal ultrasound images

    Science.gov (United States)

    Mohamed, S. S.; Salama, M. M. A.; Kamel, M.; El-Saadany, E. F.; Rizkalla, K.; Chin, J.

    2005-08-01

    This note focuses on extracting and analysing prostate texture features from trans-rectal ultrasound (TRUS) images for tissue characterization. One of the principal contributions of this investigation is the use of the information of the images' frequency domain features and spatial domain features to attain a more accurate diagnosis. Each image is divided into regions of interest (ROIs) by the Gabor multi-resolution analysis, a crucial stage, in which segmentation is achieved according to the frequency response of the image pixels. The pixels with a similar response to the same filter are grouped to form one ROI. Next, from each ROI two different statistical feature sets are constructed; the first set includes four grey level dependence matrix (GLDM) features and the second set consists of five grey level difference vector (GLDV) features. These constructed feature sets are then ranked by the mutual information feature selection (MIFS) algorithm. Here, the features that provide the maximum mutual information of each feature and class (cancerous and non-cancerous) and the minimum mutual information of the selected features are chosen, yeilding a reduced feature subset. The two constructed feature sets, GLDM and GLDV, as well as the reduced feature subset, are examined in terms of three different classifiers: the condensed k-nearest neighbour (CNN), the decision tree (DT) and the support vector machine (SVM). The accuracy classification results range from 87.5% to 93.75%, where the performance of the SVM and that of the DT are significantly better than the performance of the CNN.

  3. Expression of eag1 channel associated with the aggressive clinicopathological features and subtype of breast cancer

    OpenAIRE

    Liu, Guang-Xu; Yu, Yun-Cui; He, Xiang-ping; Ren, Sheng-Nan; Fang, Xue-Dong; Liu, Fen; He, Yan

    2015-01-01

    Backgrounds: Expression of eag1 channel (Eag1) is associated with cell malignant transformation, tumor cell metastasis and poor prognosis of the patient. This study aimed at examining whether expression of the Eag1 associated with aggressive clinicopathological feature and the molecular subtype of breast cancer. Materials and Methods: 109 patients who received breast cancer operation during January 2009 to December 2010 in Chinese-Japanese Friendship Hospital of Jilin University were recruite...

  4. Distinct Clinic-Pathological Features of Early Differentiated-Type Gastric Cancers after Helicobacter pylori Eradication

    Directory of Open Access Journals (Sweden)

    Noriyuki Horiguchi

    2016-01-01

    Full Text Available Background. Gastric cancer is discovered even after successful eradication of H. pylori. We investigated clinic pathological features of early gastric cancers after H. pylori eradication. Methods. 51 early gastric cancers (EGCs from 44 patients diagnosed after successful H. pylori eradication were included as eradication group. The clinic-pathological features were compared with that of 131 EGCs from 120 patients who did not have a history of H. pylori eradication (control group. Results. Compared with control group, clinic-pathological features of eradication group were characterized as depressed (p<0.0001, reddish (p=0.0001, and smaller (p=0.0095 lesions, which was also confirmed in the comparison of six metachronous lesions diagnosed after initial ESD and subsequent successful H. pylori eradication. Prevalence of both SM2 (submucosal invasion greater than 500 μm and unexpected SM2 cases tended to be higher in eradication group (p=0.077, 0.0867, resp.. Prevalence of inconclusive diagnosis of gastric cancer during pretreatment biopsy was also higher in the same group (26.0% versus 1.6%, p<0.0001. Conclusions. Informative clinic pathological features of EGC after H. pylori eradication are depressed, reddish appearances, which should be treated as a caution because histological diagnosis of cancerous tissue is sometimes difficult by endoscopic biopsy.

  5. Update on Anaplastic Thyroid Carcinoma: Morphological, Molecular, and Genetic Features of the Most Aggressive Thyroid Cancer

    Directory of Open Access Journals (Sweden)

    Moira Ragazzi

    2014-01-01

    Full Text Available Anaplastic thyroid carcinoma (ATC is the most aggressive form of thyroid cancer. It shows a wide spectrum of morphological presentations and the diagnosis could be challenging due to its high degree of dedifferentiation. Molecular and genetic features of ATC are widely heterogeneous as well and many efforts have been made to find a common profile in order to clarify its cancerogenetic process. A comprehensive review of the current literature is here performed, focusing on histopathological and genetic features.

  6. Immature truncated O-glycophenotype of cancer directly induces oncogenic features

    DEFF Research Database (Denmark)

    Radhakrishnan, Prakash; Dabelsteen, Sally; Madsen, Frey Brus;

    2014-01-01

    Aberrant expression of immature truncated O-glycans is a characteristic feature observed on virtually all epithelial cancer cells, and a very high frequency is observed in early epithelial premalignant lesions that precede the development of adenocarcinomas. Expression of the truncated O-glycan s...

  7. Combining targeted drugs to overcome and prevent resistance of solid cancers with some stem-like cell features

    OpenAIRE

    Jokinen, Elina; Laurila, Niina; Koivunen, Peppi; Koivunen, Jussi P

    2014-01-01

    Treatment resistance significantly inhibits the efficiency of targeted cancer therapies in drug-sensitive genotypes. In the current work, we studied mechanisms for rapidly occurring, adaptive resistance in targeted therapy-sensitive lung, breast, and melanoma cancer cell lines. The results show that in ALK translocated lung cancer lines H3122 and H2228, cells with cancer stem-like cell features characterized by high expression of cancer stem cell markers and/or in vivo tumorigenesis can media...

  8. Cuckoo search optimisation for feature selection in cancer classification: a new approach.

    Science.gov (United States)

    Gunavathi, C; Premalatha, K

    2015-01-01

    Cuckoo Search (CS) optimisation algorithm is used for feature selection in cancer classification using microarray gene expression data. Since the gene expression data has thousands of genes and a small number of samples, feature selection methods can be used for the selection of informative genes to improve the classification accuracy. Initially, the genes are ranked based on T-statistics, Signal-to-Noise Ratio (SNR) and F-statistics values. The CS is used to find the informative genes from the top-m ranked genes. The classification accuracy of k-Nearest Neighbour (kNN) technique is used as the fitness function for CS. The proposed method is experimented and analysed with ten different cancer gene expression datasets. The results show that the CS gives 100% average accuracy for DLBCL Harvard, Lung Michigan, Ovarian Cancer, AML-ALL and Lung Harvard2 datasets and it outperforms the existing techniques in DLBCL outcome and prostate datasets. PMID:26547979

  9. Cancer Basics

    Science.gov (United States)

    ... Cancer? Breast Cancer Colon/Rectum Cancer Lung Cancer Prostate Cancer Skin Cancer Show All Cancer Types News and Features Cancer Glossary ACS Bookstore Cancer Information Cancer Basics Cancer Prevention & Detection Signs & Symptoms of Cancer Treatments & Side Effects ...

  10. Analysis of the Clinicopathologic Features and Prognosis in Triple-Negative Breast Cancer

    Institute of Scientific and Technical Information of China (English)

    Dehong Yang; Hong Liu; Jing Zhao

    2008-01-01

    OBJECTIVE To investigate the clinical and pathological features,as well as prognosis in triple-negative breast cancer patients.METHODS A total of 509 cases of operable breast cancer from January,2002 to June,2002 treated in the Cancer Hospital of Tianjin Medical University were analyzed.The Her-2,ER and PR status was determined using immunohistochemistry.Of the total cases,one group was identified as triple negative breast cancer,ie defined as ER,PR and Her-2 negative.The other group was nontriple-negative breast cancer.Clinicopathologic features of the groups were compared and 5-year disease-free survival (DFS)analyzed by the Kaplan-Meier method.RESULTS Of the total cases,21.4% (109/509) of cases were found to be triple- negative while 78.6% (400/509) were non-triplenegative.The triple negative group had higher incidence rates than the non-triple-negative group of the medullary type and Grade Ⅲ tumors (P < 0.05).There was no other difference in the clinicopathologic features between the 2 groups.From follow-up to June,2007,21.1% (23/109) of the triple-negative group and 12.7%(51/400) of the non-triple negative group had a local recurrence or distant metastasis,resulting in a significant difference (P < 0.05).In the triple-negative group and non-triple-negative group,5-year DFS were 78.9% and 87.3% respectively.There was a statistically significant difference between the 2 groups (P = 0.031).CONCLUSION Compared with non-triple-negative breast cancer,triple-negative breast cancer patients have an increased likehood of a local recurrence or distant metastasis and a poorer prognosis.

  11. Comparative Analysis of Feature Extraction Methods for the Classification of Prostate Cancer from TRUS Medical Images

    Directory of Open Access Journals (Sweden)

    Manavalan Radhakrishnan

    2012-01-01

    Full Text Available Diagnosing Prostate cancer is a challenging task for Urologists, Radiologists, and Oncologists. Ultrasound imaging is one of the hopeful techniques used for early detection of prostate cancer. The Region of interest (ROI is identified by different methods after preprocessing. In this paper, DBSCAN clustering with morphological operators is used to extort the prostate region. The evaluation of texture features is important for several image processing applications. The performance of the features extracted from the various texture methods such as histogram, Gray Level Cooccurrence Matrix (GLCM, Gray-Level Run-Length Matrix (GRLM, are analyzed separately. In this paper, it is proposed to combine histogram, GLRLM and GLCM in order to study the performance. The Support Vector Machine (SVM is adopted to classify the extracted features into benign or malignant. The performance of texture methods are evaluated using various statistical parameters such as sensitivity, specificity and accuracy. The comparative analysis has been performed over 5500 digitized TRUS images of prostate.

  12. Ensemble based system for whole-slide prostate cancer probability mapping using color texture features.

    LENUS (Irish Health Repository)

    DiFranco, Matthew D

    2011-01-01

    We present a tile-based approach for producing clinically relevant probability maps of prostatic carcinoma in histological sections from radical prostatectomy. Our methodology incorporates ensemble learning for feature selection and classification on expert-annotated images. Random forest feature selection performed over varying training sets provides a subset of generalized CIEL*a*b* co-occurrence texture features, while sample selection strategies with minimal constraints reduce training data requirements to achieve reliable results. Ensembles of classifiers are built using expert-annotated tiles from training images, and scores for the probability of cancer presence are calculated from the responses of each classifier in the ensemble. Spatial filtering of tile-based texture features prior to classification results in increased heat-map coherence as well as AUC values of 95% using ensembles of either random forests or support vector machines. Our approach is designed for adaptation to different imaging modalities, image features, and histological decision domains.

  13. New Molecular Features of Colorectal Cancer Identified - Office of Cancer Clinical Proteomics Research

    Science.gov (United States)

    Investigators from the National Cancer Institute's Clinical Proteomic Tumor Analysis Consortium (CPTAC) who comprehensively analyzed 95 human colorectal tumor samples, have determined how gene alterations identified in previous analyses of the same samples

  14. Predicting non-small cell lung cancer prognosis by fully automated microscopic pathology image features

    Science.gov (United States)

    Yu, Kun-Hsing; Zhang, Ce; Berry, Gerald J.; Altman, Russ B.; Ré, Christopher; Rubin, Daniel L.; Snyder, Michael

    2016-01-01

    Lung cancer is the most prevalent cancer worldwide, and histopathological assessment is indispensable for its diagnosis. However, human evaluation of pathology slides cannot accurately predict patients' prognoses. In this study, we obtain 2,186 haematoxylin and eosin stained histopathology whole-slide images of lung adenocarcinoma and squamous cell carcinoma patients from The Cancer Genome Atlas (TCGA), and 294 additional images from Stanford Tissue Microarray (TMA) Database. We extract 9,879 quantitative image features and use regularized machine-learning methods to select the top features and to distinguish shorter-term survivors from longer-term survivors with stage I adenocarcinoma (P<0.003) or squamous cell carcinoma (P=0.023) in the TCGA data set. We validate the survival prediction framework with the TMA cohort (P<0.036 for both tumour types). Our results suggest that automatically derived image features can predict the prognosis of lung cancer patients and thereby contribute to precision oncology. Our methods are extensible to histopathology images of other organs. PMID:27527408

  15. Analysis on Clinical Features of 2168 Patients with Lung Cancer Diagnosed by Bronchoscope

    Institute of Scientific and Technical Information of China (English)

    Zhang Yu; Yu Like; Xie Haiyan; Hu Weihua; Hao Keke; Xia Ning

    2013-01-01

    Objective: To analyze the clinical features of lung cancer diagnosed by bronchoscopy. Methods:The clinical features of2168 patients with lung cancer diagnosed by bronchoscopy were retrospectively analyzed, including gender, age, pathological type, diseased region, manifestations under bronchoscopy and methods of drawing materials. Results:The ratio of male/female was 4.8:1 and the peak onset age was 60~69 years old. The major pathological type was squamous cell carcinoma (44.5%), then adenocarcinoma (25.9%) and small cell lung cancer (18.3%). The incidence of squamous cell carcinoma was the highest in males (50.6%), while that of adenocarcinoma in females (56.2%). The positive diagnostic rates of forceps biopsy, brush biopsy, bronchial alveolar lavage and transbronchial needle aspiration were 81.6%, 49.4%, 18.2% and 62.6%, respectively, whereas that of biopsy combined with brush biopsy came up to 89.0%. Conclusion: Bronchoscopy is an important method in diagnosis of lung cancer. Different ages and genders of patients with lung cancer have different onset, and the distribution of pathological types is diverse. Attaching more importance to bronchoscopy and improving biopsy technique can signiifcantly improve the diagnostic rate and provide reliable evidences for clinical treatment.

  16. Analysis on Clinical Features of 2168 Patients with Lung Cancer Diagnosed by Bronchoscope

    Directory of Open Access Journals (Sweden)

    Yu Zhang

    2013-06-01

    Full Text Available Objective: To analyze the clinical features of lung cancer diagnosed by bronchoscopy. Methods: The clinical features of 2168 patients with lung cancer diagnosed by bronchoscopy were retrospectively analyzed, including gender, age, pathological type, diseased region, manifestations under bronchoscopy and methods of drawing materials. Results: The ratio of male/female was 4.8:1 and the peak onset age was 60 - 69 years old. The major pathological type was squamous cell carcinoma (44.5%, then adenocarcinoma (25.9% and small cell lung cancer (18.3%. The incidence of squamous cell carcinoma was the highest in males (50.6%, while that of adenocarcinoma in females (56.2%. The positive diagnostic rates of forceps biopsy, brush biopsy, bronchial alveolar lavage and transbronchial needle aspiration were 81.6%, 49.4%, 18.2% and 62.6%, respectively, whereas that of biopsy combined with brush biopsy came up to 89.0%. Conclusion: Bronchoscopy is an important method in diagnosis of lung cancer. Different ages and genders of patients with lung cancer have different onset, and the distribution of pathological types is diverse. Attaching more importance to bronchoscopy and improving biopsy technique can significantly improve the diagnostic rate and provide reliable evidences for clinical treatment.

  17. An Approach with Support Vector Machine using Variable Features Selection on Breast Cancer Prognosis

    Directory of Open Access Journals (Sweden)

    Sandeep Chaurasia

    2013-09-01

    Full Text Available Cancer diagnosis and clinical outcome prediction are among the most important emerging applications of machine learning. In this paper we have used an approach by using support vector machine classifier to construct a model that is useful for the breast cancer survivability prediction. We have used both 5 cross and 10 cross validation of variable selection on input feature vectors and the performance measurement through bio-learning class performance while measuring AUC, specificity and sensitivity. The performance of the SVM is much better than the other machine learning classifier.

  18. Clinicopathological features and surgical safety of gastric cancer in elderly patients.

    Science.gov (United States)

    Lim, Joo Hyun; Lee, Dong Ho; Shin, Cheol Min; Kim, Nayoung; Park, Young Soo; Jung, Hyun Chae; Song, In Sung

    2014-12-01

    Gastric cancer is one of the most common cancers, especially among the elderly. However little is known about gastric cancer in elderly patients. This study was designed to evaluate the specific features of gastric cancer in elderly patients. Medical records of 1,107 patients who had radical gastrectomy for gastric cancer between June 2005 and December 2009 were reviewed. They were divided into young (CA 19-9 (5.6%, 13.4%, 14.6%, P=0.001), advanced diseases (42.5%, 47.0%, and 57.6, P=0.014), and node metastasis (37.6%, 38.9%, 51.5%, P=0.029) were more common in the young-old and old-old age groups. There were no significant differences in Helicobacter pylori status (63.6%, 56.7%, 61.2%, P=0.324) between the three groups. Surgery-related complication rates were similar in the three groups (5.3%, 5.1%, 8.1%, P=0.497). Microsatellite instability (Pcancer without significant risk of complications. However, considering the more advanced disease and synchronous tumors among the elderly, care should be taken while deciding the extent of surgery for elderly gastric cancer.

  19. Clinical features and prognosis of obese breast cancer patients:a retrospective study*

    Institute of Scientific and Technical Information of China (English)

    Zhendong Zheng; Heng Cao; Shuxian Qu; Yongye Liu; Ying Piao; Xiaodong Xie

    2013-01-01

    Objective:The aim of our study was to investigate the prognosis of obese breast cancer patients. Methods:This study was conducted on a total of 317 breast cancer patients who were histopathological y and clinical y diagnosed at the General Hospital of Shenyang Military Region (China) from 2004 to 2006. Clinical data including height, weight, age at diagnosis, tumor size, lymph node status, menopausal status, family history of cancer and hormone receptor status were col-lected. Log-rank test was performed to compare the disease free survival (DFS) and overal survival (OS). Cox proportional hazards regression analysis was conducted to make multivariate analysis. The Chi square test was used to compare the clinical features among normal weight group, overweight group, and obese group. Results:Obesity was an independent prognostic factor for DFS (P=0.022) and OS (P=0.032) in breast cancer patients. In the stratified analysis based on the hormone receptor status, obesity was independently associated with OS in patients with negative ER/PR (P=0.002), but such association was not observed in patients with positive hormone receptors. Obesity was also associated with lymph node status (P=0.001) and smoking (P=0.009). Conclusion:Obesity is associated with poor DFS and OS in patients with breast cancer. Therefore, maintaining normal weight may benefit breast cancer patients.

  20. Imaging and Clinical Features of Thyroid Cancer in Children and Adolescents

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Kang Young; Hong, HyunSook; Lee, Eun Hye; Yi, Beom Ha; Lee, Hae Kyung [Dept. of Radiology, Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheonl (Korea, Republic of); Lee, Yong Hwa [Dept. of Labortory Medicine and Genetics, Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheonl (Korea, Republic of); Koh, Eun Suk [Dept. of Pathology, Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheonl (Korea, Republic of)

    2011-08-15

    To evaluate clinical and imaging features of pediatric thyroid cancer, including BRAF'V{sup 600E} mutation status in papillary thyroid cancer (PTC). We evaluated clinical findings including BRAF''6{sup 00E} status, ultrasound (US), and CT features of 13 pediatric patients with thyroid cancer. US findings were retrospectively analyzed for location, presence of a nodule, echotexture, echogenicity, calcifications, margin, shape, intranodular vascularity and abnormal lymph nodes. CT characteristics of the lesions, including attenuation, calcification, and measured degree of enhancement, were assessed. The patients included three boys and ten girls with a mean age of 15.5 years (range 6-18 years). No patient was exposed to radiation. Palpable neck mass was the most common presentation. Eleven of 13 patients (84.6%) were diagnosed with PTC, and two (15.4%) had follicular thyroid cancer (FTC). Nine of 13 (69.2%) had high T-staging. BRAF{sup V600E} mutations were detected in 30.0% of PTC patients. A diffusely enlarged thyroid with calcifications (n = 2) or nodules (n = 7) was detected on US. All PTC nodules showed malignant US findings and one FTC displayed on indeterminate nodule. Nodules generally showed low attenuation on enhanced CT (n = 11/12). US demonstrated enlarged glands with calcifications or nodules. Diffusely enlarged thyroids with microcalcifications should be evaluated using fine-needle aspiration. A low attenuation nodule was a common finding on enhanced CT.

  1. Assessment of two mammographic density related features in predicting near-term breast cancer risk

    Science.gov (United States)

    Zheng, Bin; Sumkin, Jules H.; Zuley, Margarita L.; Wang, Xingwei; Klym, Amy H.; Gur, David

    2012-02-01

    In order to establish a personalized breast cancer screening program, it is important to develop risk models that have high discriminatory power in predicting the likelihood of a woman developing an imaging detectable breast cancer in near-term (e.g., breast cancer risk models, mammographic density is considered the second highest breast cancer risk factor (second to woman's age). In this study we explored a new feature, namely bilateral mammographic density asymmetry, and investigated the feasibility of predicting near-term screening outcome. The database consisted of 343 negative examinations, of which 187 depicted cancers that were detected during the subsequent screening examination and 155 that remained negative. We computed the average pixel value of the segmented breast areas depicted on each cranio-caudal view of the initial negative examinations. We then computed the mean and difference mammographic density for paired bilateral images. Using woman's age, subjectively rated density (BIRADS), and computed mammographic density related features we compared classification performance in estimating the likelihood of detecting cancer during the subsequent examination using areas under the ROC curves (AUC). The AUCs were 0.63+/-0.03, 0.54+/-0.04, 0.57+/-0.03, 0.68+/-0.03 when using woman's age, BIRADS rating, computed mean density and difference in computed bilateral mammographic density, respectively. Performance increased to 0.62+/-0.03 and 0.72+/-0.03 when we fused mean and difference in density with woman's age. The results suggest that, in this study, bilateral mammographic tissue density is a significantly stronger (p<0.01) risk indicator than both woman's age and mean breast density.

  2. Mesenchymal traits are selected along with stem features in breast cancer cells grown as mammospheres

    Science.gov (United States)

    Borgna, Silvia; Armellin, Michela; di Gennaro, Alessandra; Maestro, Roberta; Santarosa, Manuela

    2012-01-01

    Increasing evidence indicates that invasive properties of breast cancers rely on gain of mesenchymal and stem features, which has suggested that the dual targeting of these phenotypes may represent an appealing therapeutic strategy. It is known that the fraction of stem cells can be enriched by culturing breast cancer cells as mammospheres (MS), but whether these pro-stem conditions favor also the expansion of cells provided of mesenchymal features is still undefined. In the attempt to shed light on this issue, we compared the phenotypes of a panel of 10 breast cancer cell lines representative of distinct subtypes (luminal, HER2-positive, basal-like and claudin-low), grown in adherent conditions and as mammospheres. Under MS-proficient conditions, the increment in the fraction of stem-like cells was associated to upregulation of the mesenchymal marker Vimentin and downregulation of the epithelial markers expressed by luminal cells (E-cadherin, KRT18, KRT19, ESR1). Luminal cells tended also to upregulate the myoepithelial marker CD10. Taken together, our data indicate that MS-proficient conditions do favor mesenchymal/myoepithelial features, and indicate that the use of mammospheres as an in vitro tumor model may efficiently allow the exploitation of therapeutic approaches aimed at targeting aggressive tumors that have undergone epithelial-to-mesenchymal transition. PMID:23095640

  3. Mitosis detection in breast cancer pathology images by combining handcrafted and convolutional neural network features.

    Science.gov (United States)

    Wang, Haibo; Cruz-Roa, Angel; Basavanhally, Ajay; Gilmore, Hannah; Shih, Natalie; Feldman, Mike; Tomaszewski, John; Gonzalez, Fabio; Madabhushi, Anant

    2014-10-01

    Breast cancer (BCa) grading plays an important role in predicting disease aggressiveness and patient outcome. A key component of BCa grade is the mitotic count, which involves quantifying the number of cells in the process of dividing (i.e., undergoing mitosis) at a specific point in time. Currently, mitosis counting is done manually by a pathologist looking at multiple high power fields (HPFs) on a glass slide under a microscope, an extremely laborious and time consuming process. The development of computerized systems for automated detection of mitotic nuclei, while highly desirable, is confounded by the highly variable shape and appearance of mitoses. Existing methods use either handcrafted features that capture certain morphological, statistical, or textural attributes of mitoses or features learned with convolutional neural networks (CNN). Although handcrafted features are inspired by the domain and the particular application, the data-driven CNN models tend to be domain agnostic and attempt to learn additional feature bases that cannot be represented through any of the handcrafted features. On the other hand, CNN is computationally more complex and needs a large number of labeled training instances. Since handcrafted features attempt to model domain pertinent attributes and CNN approaches are largely supervised feature generation methods, there is an appeal in attempting to combine these two distinct classes of feature generation strategies to create an integrated set of attributes that can potentially outperform either class of feature extraction strategies individually. We present a cascaded approach for mitosis detection that intelligently combines a CNN model and handcrafted features (morphology, color, and texture features). By employing a light CNN model, the proposed approach is far less demanding computationally, and the cascaded strategy of combining handcrafted features and CNN-derived features enables the possibility of maximizing the performance

  4. The Morphologic Features and Accuracy of Preoperative T-Staging in Resected Gallbladder Cancers

    Energy Technology Data Exchange (ETDEWEB)

    Jo, Sung Ehn; Kim, Mi Young; Kim, Jong Bum; Kim, Youn Jeong; Kang, Young Hye; Suh, Chang Hae [Dept. of Radiology, Inha University Hospital, Inha University School of Medicine, Incheon (Korea, Republic of); Lee, Kun Yong [Dept. of General Surgery, Inha University Hospital, Inha University School of Medicine, Incheon (Korea, Republic of); Cho, Suk Jin [Dept. of Pathology, Inha University Hospital, Inha University School of Medicine, Incheon (Korea, Republic of)

    2012-04-15

    To assess the morphological features and the accuracy of T staging images in surgically- proven gallbladder cancers, retrospectively. Images of 59 surgically-proven gallbladder cancers were reviewed. Morphologic features, shape, size of tumors and the presence of stones or sludge within the images were evaluated and correlated with surgicopathologic findings. Polypoid masses were shown in 49 cases (83%). The sizes of tumors were well correlated with surgicopathologic T-stage. With ROC evaluation, the size cutoff point to differentiate the {<=} T1 versus {>=} T2 lesions was 2.4 cm. Stones or sludge were found in 25 cases (42%). The positive predictive value, negative predictive value, sensitivities, specificities, and accuracy of the ability to differentiate the {<=} T1 versus {>=} T2 lesions were 75%, 86%, 46%, 96%, 85% and those of the ability to differentiate {<=} T2 versus {>=} T3 lesions were 89%, 49%, 45%, 90%, and 61%, respectively. Image analysis showed that polypoid mass and wall thickening were major findings. With this in mind, polypoid mass shows the possibility of gallbladder cancer originating from adenoma, even if the size is larger than 2 or 2.4 cm, the surgicopathologic stage could be low. Moreover, the accuracy of image based T stage on pericholecystic infiltration and wall thickening was low.

  5. A new breast cancer risk analysis approach using features extracted from multiple sub-regions on bilateral mammograms

    Science.gov (United States)

    Sun, Wenqing; Tseng, Tzu-Liang B.; Zheng, Bin; Zhang, Jianying; Qian, Wei

    2015-03-01

    A novel breast cancer risk analysis approach is proposed for enhancing performance of computerized breast cancer risk analysis using bilateral mammograms. Based on the intensity of breast area, five different sub-regions were acquired from one mammogram, and bilateral features were extracted from every sub-region. Our dataset includes 180 bilateral mammograms from 180 women who underwent routine screening examinations, all interpreted as negative and not recalled by the radiologists during the original screening procedures. A computerized breast cancer risk analysis scheme using four image processing modules, including sub-region segmentation, bilateral feature extraction, feature selection, and classification was designed to detect and compute image feature asymmetry between the left and right breasts imaged on the mammograms. The highest computed area under the curve (AUC) is 0.763 ± 0.021 when applying the multiple sub-region features to our testing dataset. The positive predictive value and the negative predictive value were 0.60 and 0.73, respectively. The study demonstrates that (1) features extracted from multiple sub-regions can improve the performance of our scheme compared to using features from whole breast area only; (2) a classifier using asymmetry bilateral features can effectively predict breast cancer risk; (3) incorporating texture and morphological features with density features can boost the classification accuracy.

  6. Genetic Fuzzy System (GFS based wavelet co-occurrence feature selection in mammogram classification for breast cancer diagnosis

    Directory of Open Access Journals (Sweden)

    Meenakshi M. Pawar

    2016-09-01

    Full Text Available Breast cancer is significant health problem diagnosed mostly in women worldwide. Therefore, early detection of breast cancer is performed with the help of digital mammography, which can reduce mortality rate. This paper presents wrapper based feature selection approach for wavelet co-occurrence feature (WCF using Genetic Fuzzy System (GFS in mammogram classification problem. The performance of GFS algorithm is explained using mini-MIAS database. WCF features are obtained from detail wavelet coefficients at each level of decomposition of mammogram image. At first level of decomposition, 18 features are applied to GFS algorithm, which selects 5 features with an average classification success rate of 39.64%. Subsequently, at second level it selects 9 features from 36 features and the classification success rate is improved to 56.75%. For third level, 16 features are selected from 54 features and average success rate is improved to 64.98%. Lastly, at fourth level 72 features are applied to GFS, which selects 16 features and thereby increasing average success rate to 89.47%. Hence, GFS algorithm is the effective way of obtaining optimal set of feature in breast cancer diagnosis.

  7. Nontuberculous mycobacterial pulmonary disease mimicking lung cancer: Clinicoradiologic features and diagnostic implications.

    Science.gov (United States)

    Hong, Su Jin; Kim, Tae Jung; Lee, Jae-Ho; Park, Jeong-Soo

    2016-06-01

    To describe the features and clinical implications of computed tomography (CT), positron emission tomography (PET), and percutaneous needle aspiration biopsy (PCNB) in pulmonary nontuberculous mycobacterial (NTM) disease manifesting as a solitary nodule, mass, or mass-like consolidation mimicking malignancy.Among a cohort of 388 patients with NTM pulmonary disease, 14 patients with clinically and radiologically suspected lung cancer were included in our study. Two chest radiologists evaluated CT features, including lesion type (nodule, mass, or mass-like consolidation), morphologic features (margin, degree of enhancement, calcification), and presence of accompanying findings suggestive of NTM pulmonary disease (bronchiectasis with clustered centrilobular nodules or upper-lobe cavitary lesions) by consensus. Diagnostic procedures for microbiologic diagnosis of NTM disease and clinical outcome were reviewed.Incidence of NTM pulmonary disease presenting as solitary nodule/mass (n = 8) or mass-like consolidation (n = 6) was 3.6% (14 of 388). Most lesions were detected incidentally during routine health check-up or evaluation of other disease (11 of 14, 79%). Lesions typically showed poor contrast-enhancement (9 of 12) and internal calcification (6 of 14). No lesions had CT features suggestive of NTM pulmonary disease. All 4 lesions for which PET/CT imaging was performed showed strong fluorodeoxyglucose uptake simulating malignant lesions (mean, 4.9; range, 3.6-7.8). PCNB revealed mycobacterial histology in 6 of 11 specimens and positive culture results were obtained for 7 of 7 specimens.NTM pulmonary disease may present as a solitary nodule, mass, or mass-like consolidation mimicking malignancy. CT features and PCNB are important to diagnose NTM disease mimicking lung cancer to avoid unnecessary surgery. PMID:27367996

  8. Breast Cancer with Neoductgenesis: Histopathological Criteria and Its Correlation with Mammographic and Tumour Features

    Directory of Open Access Journals (Sweden)

    Wenjing Zhou

    2014-01-01

    Full Text Available Introduction. Breast cancer with mammographic casting type calcifications, high grade DCIS with an abnormal number of ducts, periductal desmoplastic reaction, lymphocyte infiltration, and tenascin-C (TN-C overexpression has been proposed to represent a more aggressive form of breast cancer and has been denominated as breast cancer with neoductgenesis. We developed histopathological criteria for neoductgenesis in order to study reproducibility and correlation with other tumour markers. Methods. 74 cases of grades 2 and 3 DCIS, with or without an invasive component, were selected. A combined score of the degree(s of concentration of ducts, lymphocyte infiltration, and periductal fibrosis was used to classify cases as showing neoductgenesis, or not. Diagnostic reproducibility, correlation with tumour markers, and mammographic features were studied. Results. Twenty-three of 74 cases were diagnosed with neoductgenesis. The kappa value between pathologists showed moderate reproducibility (0.50 (95% CI; 0.41–0.60. Neoductgenesis correlated significantly with malignant type microcalcifications and TN-C expression (P=0.008 and 0.04 and with ER, PR, and HER2 status (P<0.00001 for all three markers. Conclusions. We developed histological criteria for breast cancer with neoductgenesis. Neoductgenesis, by our applied histopathological definition was related to more aggressive tumour biology and malignant mammographic calcifications.

  9. Identification of prognostic molecular features in the reactive stroma of human breast and prostate cancer.

    Directory of Open Access Journals (Sweden)

    Anne Planche

    Full Text Available Primary tumor growth induces host tissue responses that are believed to support and promote tumor progression. Identification of the molecular characteristics of the tumor microenvironment and elucidation of its crosstalk with tumor cells may therefore be crucial for improving our understanding of the processes implicated in cancer progression, identifying potential therapeutic targets, and uncovering stromal gene expression signatures that may predict clinical outcome. A key issue to resolve, therefore, is whether the stromal response to tumor growth is largely a generic phenomenon, irrespective of the tumor type or whether the response reflects tumor-specific properties. To address similarity or distinction of stromal gene expression changes during cancer progression, oligonucleotide-based Affymetrix microarray technology was used to compare the transcriptomes of laser-microdissected stromal cells derived from invasive human breast and prostate carcinoma. Invasive breast and prostate cancer-associated stroma was observed to display distinct transcriptomes, with a limited number of shared genes. Interestingly, both breast and prostate tumor-specific dysregulated stromal genes were observed to cluster breast and prostate cancer patients, respectively, into two distinct groups with statistically different clinical outcomes. By contrast, a gene signature that was common to the reactive stroma of both tumor types did not have survival predictive value. Univariate Cox analysis identified genes whose expression level was most strongly associated with patient survival. Taken together, these observations suggest that the tumor microenvironment displays distinct features according to the tumor type that provides survival-predictive value.

  10. Comparison of MRI of liver cancer (preoperative and resected liver specimen) and pathological feature

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    Tanaka, Toshihiko (Kurume Univ., Fukuoka (Japan). School of Medicine)

    1990-10-01

    Twenty-one nodules of hepatocellular carcinoma (HCC) and eighteen nodules of liver metastasis, which were confirmed pathologically, were investigated by MRI before operation and MRI of resected liver specimen. Pre-operative MRI pointed out all HCCs and seventeen metastases. STIR method was most useful for detection of HCCs. T2WI and STIR method were most useful for detection of liver metastases. Pre-operative MRI also revealed 93% of capsule formation, 29% of septal formation, 75% of fatty metamorphosis of HCC and 75% of necrosis of liver metastasis, and post-operative MRI of resected specimens revealed 100% of capsule formation, 71% of septal formation, 75% of fatty metamorphosis of HCC and 88% of necrosis of liver metastasis. T1WI showed a high intensity halo surrounding metastasis. This characteristic peripheral halo was seen in 22% of metastases. These findings corresponded to pathological feature of liver cancer. MRI was thought to be useful diagnostic modality of liver cancer. (author).

  11. Clinical and Molecular Features of Laron Syndrome, A Genetic Disorder Protecting from Cancer.

    Science.gov (United States)

    Janecka, Anna; Kołodziej-Rzepa, Marta; Biesaga, Beata

    2016-01-01

    Laron syndrome (LS) is a rare, genetic disorder inherited in an autosomal recessive manner. The disease is caused by mutations of the growth hormone (GH) gene, leading to GH/insulin-like growth factor type 1 (IGF1) signalling pathway defect. Patients with LS have characteristic biochemical features, such as a high serum level of GH and low IGF1 concentration. Laron syndrome was first described by the Israeli physician Zvi Laron in 1966. Globally, around 350 people are affected by this syndrome and there are two large groups living in separate geographic regions: Israel (69 individuals) and Ecuador (90 individuals). They are all characterized by typical appearance such as dwarfism, facial phenotype, obesity and hypogenitalism. Additionally, they suffer from hypoglycemia, hypercholesterolemia and sleep disorders, but surprisingly have a very low cancer risk. Therefore, studies on LS offer a unique opportunity to better understand carcinogenesis and develop new strategies of cancer treatment. PMID:27381597

  12. Beyond breast cancer: mammographic features and mortality risk in a population of healthy women.

    Directory of Open Access Journals (Sweden)

    Rachel A Murphy

    Full Text Available BACKGROUND: Breast fibroglandular (dense tissue is a risk factor for breast cancer. Beyond breast cancer, little is known regarding the prognostic significance of mammographic features. METHODS: We evaluated relationships between nondense (fatty breast area and dense area with all-cause mortality in 4,245 initially healthy women from the Breast Cancer Detection Demonstration Project; 1,361 died during a mean follow-up of 28.2 years. Dense area and total breast area were assessed using planimeter measurements from screening mammograms. Percent density reflects dense area relative to breast area and nondense area was calculated as the difference between total breast area and dense area. Hazard ratios (HRs and 95% confidence intervals (CIs were estimated by Cox proportional hazards regression. RESULTS: In age-adjusted models, greater nondense and total breast area were associated with increased risk of death (HR 1.17, 95% CI 1.10-1.24 and HR 1.13, 95% CI 1.06-1.19, per SD difference while greater dense area and percent density were associated with lower risk of death (HR 0.91, 95% CI 0.86-0.95 and HR 0.87, 95% CI 0.83-0.92, per SD difference. Associations were not attenuated with adjustment for race, education, mammogram type (x-ray or xerogram, smoking status, diabetes and heart disease. With additional adjustment for body mass index, associations were diminished for all features but remained statistically significant for dense area (HR 0.94, 95% CI 0.89-0.99, per SD difference and percent density (HR 0.93, 95% CI 0.87-0.98, per SD difference. CONCLUSIONS: These data indicate that dense area and percent density may relate to survival in healthy women and suggest the potential utility of mammograms beyond prediction of breast cancer risk.

  13. Expression of BNIP3 in invasive breast cancer: correlations with the hypoxic response and clinicopathological features

    International Nuclear Information System (INIS)

    Bcl-2/adenovirus E1B 19 kDa-interacting protein 3 (BNIP3) is a pro-apoptotic member of the Bcl-2 family induced under hypoxia. Low or absent expression has recently been described in human tumors, including gastrointestinal tumors, resulting in poor prognosis. Little is known about BNIP3 expression in invasive breast cancer. The aim of the present study was to investigate the expression of BNIP3 in invasive breast cancer at the mRNA and protein level in correlation with the hypoxic response and clinicopathological features. In 40 cases of invasive breast cancer, BNIP3 mRNA in situ hybridization was performed on frozen sections with a digoxigenin labeled anti-BNIP3 probe. Paraffin embedded sections of the same specimens were used to determine protein expression of BNIP3, Hypoxia Inducible Factor 1 alpha (HIF-1α) and its downstream targets Glucose Transporter 1 (Glut-1) and Carbonic Anhydrase (CAIX) by immunohistochemistry. BNIP3 mRNA was expressed in 16/40 (40%) of the cases and correlated with BNIP3 protein expression (p = 0.0218). Neither BNIP3 protein nor mRNA expression correlated with expression of HIF-1α expression or its downstream targets. Tumors which showed loss of expression of BNIP3 had significantly more often lymph node metastases (82% vs 39%, p = 0.010) and showed a higher mitotic activity index (p = 0.027). BNIP3 protein expression was often nuclear in normal breast, but cytoplasmic in tumor cells. BNIP3 expression is lost in a significant portion of invasive breast cancers, which is correlated with poor prognostic features such as positive lymph node status and high proliferation, but not with the hypoxic response

  14. Correlation of primary tumor FDG uptake with histopathologic features of advanced gastric cancer

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Hae Won; Won, Kyoung Sook; Song, Bong Il; Kang, Yu Na [Keimyung University Dongsan Medical Center, Daegu (Korea, Republic of)

    2015-06-15

    Histopathologic features could affect the FDG uptake of primary gastric cancer and detection rate on FDG PET/CT. The aim of this study was to evaluate the FDG uptake of primary gastric cancer by correlating it with the histopathologic features of the tumors. Fifty patients with locally advanced gastric adenocarcinoma who were referred for preoperative FDG-PET/CT scans were enrolled in this study. The detection rate of PET/CT and maximum standardized uptake values (SUV{sub max}) of the primary tumor were compared using the WHO, Lauren, Ming and Borrmann classifications and tumor size and location. In 45 of the 50 patients (90 %), the primary gastric tumors were detected by FDG PET/CT. On comparison using the WHO classification, the detection rate and SUV{sub max} of the tubular type were significantly higher than those of the poorly cohesive type. On comparison using the Lauren and Ming classifications, the SUV{sub maxs} of the intestinal type and expanding type were significantly higher than those of the diffuse and infiltrative type, respectively. On comparison using the Borrmann classification and tumor size and location, there was no significant difference in the detection rate and SUV{sub max} of primary gastric tumors. This study demonstrates that the poorly cohesive type according to the WHO classification, diffuse type according to the Lauren classification and infiltrative type according to the Ming classification have low FDG uptake in patients with locally advanced gastric carcinoma. Understanding the relationship between primary tumor FDG uptake and histopathologic features would be helpful in detecting the primary tumor by FDG PET/CT in patients with gastric cancer.

  15. Evaluating stability of histomorphometric features across scanner and staining variations: predicting biochemical recurrence from prostate cancer whole slide images

    Science.gov (United States)

    Leo, Patrick; Lee, George; Madabhushi, Anant

    2016-03-01

    Quantitative histomorphometry (QH) is the process of computerized extraction of features from digitized tissue slide images. Typically these features are used in machine learning classifiers to predict disease presence, behavior and outcome. Successful robust classifiers require features that both discriminate between classes of interest and are stable across data from multiple sites. Feature stability may be compromised by variation in slide staining and scanning procedures. These laboratory specific variables include dye batch, slice thickness and the whole slide scanner used to digitize the slide. The key therefore is to be able to identify features that are not only discriminating between the classes of interest (e.g. cancer and non-cancer or biochemical recurrence and non- recurrence) but also features that will not wildly fluctuate on slides representing the same tissue class but from across multiple different labs and sites. While there has been some recent efforts at understanding feature stability in the context of radiomics applications (i.e. feature analysis of radiographic images), relatively few attempts have been made at studying the trade-off between feature stability and discriminability for histomorphometric and digital pathology applications. In this paper we present two new measures, preparation-induced instability score (PI) and latent instability score (LI), to quantify feature instability across and within datasets. Dividing PI by LI yields a ratio for how often a feature for a specific tissue class (e.g. low grade prostate cancer) is different between datasets from different sites versus what would be expected from random chance alone. Using this ratio we seek to quantify feature vulnerability to variations in slide preparation and digitization. Since our goal is to identify stable QH features we evaluate these features for their stability and thus inclusion in machine learning based classifiers in a use case involving prostate cancer

  16. A Comparative Analysis of Swarm Intelligence Techniques for Feature Selection in Cancer Classification

    Directory of Open Access Journals (Sweden)

    Chellamuthu Gunavathi

    2014-01-01

    Full Text Available Feature selection in cancer classification is a central area of research in the field of bioinformatics and used to select the informative genes from thousands of genes of the microarray. The genes are ranked based on T-statistics, signal-to-noise ratio (SNR, and F-test values. The swarm intelligence (SI technique finds the informative genes from the top-m ranked genes. These selected genes are used for classification. In this paper the shuffled frog leaping with Lévy flight (SFLLF is proposed for feature selection. In SFLLF, the Lévy flight is included to avoid premature convergence of shuffled frog leaping (SFL algorithm. The SI techniques such as particle swarm optimization (PSO, cuckoo search (CS, SFL, and SFLLF are used for feature selection which identifies informative genes for classification. The k-nearest neighbour (k-NN technique is used to classify the samples. The proposed work is applied on 10 different benchmark datasets and examined with SI techniques. The experimental results show that the results obtained from k-NN classifier through SFLLF feature selection method outperform PSO, CS, and SFL.

  17. A comparative analysis of swarm intelligence techniques for feature selection in cancer classification.

    Science.gov (United States)

    Gunavathi, Chellamuthu; Premalatha, Kandasamy

    2014-01-01

    Feature selection in cancer classification is a central area of research in the field of bioinformatics and used to select the informative genes from thousands of genes of the microarray. The genes are ranked based on T-statistics, signal-to-noise ratio (SNR), and F-test values. The swarm intelligence (SI) technique finds the informative genes from the top-m ranked genes. These selected genes are used for classification. In this paper the shuffled frog leaping with Lévy flight (SFLLF) is proposed for feature selection. In SFLLF, the Lévy flight is included to avoid premature convergence of shuffled frog leaping (SFL) algorithm. The SI techniques such as particle swarm optimization (PSO), cuckoo search (CS), SFL, and SFLLF are used for feature selection which identifies informative genes for classification. The k-nearest neighbour (k-NN) technique is used to classify the samples. The proposed work is applied on 10 different benchmark datasets and examined with SI techniques. The experimental results show that the results obtained from k-NN classifier through SFLLF feature selection method outperform PSO, CS, and SFL. PMID:25157377

  18. Cancer Feature Selection and Classification Using a Binary Quantum-Behaved Particle Swarm Optimization and Support Vector Machine.

    Science.gov (United States)

    Xi, Maolong; Sun, Jun; Liu, Li; Fan, Fangyun; Wu, Xiaojun

    2016-01-01

    This paper focuses on the feature gene selection for cancer classification, which employs an optimization algorithm to select a subset of the genes. We propose a binary quantum-behaved particle swarm optimization (BQPSO) for cancer feature gene selection, coupling support vector machine (SVM) for cancer classification. First, the proposed BQPSO algorithm is described, which is a discretized version of original QPSO for binary 0-1 optimization problems. Then, we present the principle and procedure for cancer feature gene selection and cancer classification based on BQPSO and SVM with leave-one-out cross validation (LOOCV). Finally, the BQPSO coupling SVM (BQPSO/SVM), binary PSO coupling SVM (BPSO/SVM), and genetic algorithm coupling SVM (GA/SVM) are tested for feature gene selection and cancer classification on five microarray data sets, namely, Leukemia, Prostate, Colon, Lung, and Lymphoma. The experimental results show that BQPSO/SVM has significant advantages in accuracy, robustness, and the number of feature genes selected compared with the other two algorithms. PMID:27642363

  19. Cancer Feature Selection and Classification Using a Binary Quantum-Behaved Particle Swarm Optimization and Support Vector Machine

    Directory of Open Access Journals (Sweden)

    Maolong Xi

    2016-01-01

    Full Text Available This paper focuses on the feature gene selection for cancer classification, which employs an optimization algorithm to select a subset of the genes. We propose a binary quantum-behaved particle swarm optimization (BQPSO for cancer feature gene selection, coupling support vector machine (SVM for cancer classification. First, the proposed BQPSO algorithm is described, which is a discretized version of original QPSO for binary 0-1 optimization problems. Then, we present the principle and procedure for cancer feature gene selection and cancer classification based on BQPSO and SVM with leave-one-out cross validation (LOOCV. Finally, the BQPSO coupling SVM (BQPSO/SVM, binary PSO coupling SVM (BPSO/SVM, and genetic algorithm coupling SVM (GA/SVM are tested for feature gene selection and cancer classification on five microarray data sets, namely, Leukemia, Prostate, Colon, Lung, and Lymphoma. The experimental results show that BQPSO/SVM has significant advantages in accuracy, robustness, and the number of feature genes selected compared with the other two algorithms.

  20. Multiple Adaptive Neuro-Fuzzy Inference System with Automatic Features Extraction Algorithm for Cervical Cancer Recognition

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    Mohammad Subhi Al-batah

    2014-01-01

    Full Text Available To date, cancer of uterine cervix is still a leading cause of cancer-related deaths in women worldwide. The current methods (i.e., Pap smear and liquid-based cytology (LBC to screen for cervical cancer are time-consuming and dependent on the skill of the cytopathologist and thus are rather subjective. Therefore, this paper presents an intelligent computer vision system to assist pathologists in overcoming these problems and, consequently, produce more accurate results. The developed system consists of two stages. In the first stage, the automatic features extraction (AFE algorithm is performed. In the second stage, a neuro-fuzzy model called multiple adaptive neuro-fuzzy inference system (MANFIS is proposed for recognition process. The MANFIS contains a set of ANFIS models which are arranged in parallel combination to produce a model with multi-input-multioutput structure. The system is capable of classifying cervical cell image into three groups, namely, normal, low-grade squamous intraepithelial lesion (LSIL and high-grade squamous intraepithelial lesion (HSIL. The experimental results prove the capability of the AFE algorithm to be as effective as the manual extraction by human experts, while the proposed MANFIS produces a good classification performance with 94.2% accuracy.

  1. Multiple adaptive neuro-fuzzy inference system with automatic features extraction algorithm for cervical cancer recognition.

    Science.gov (United States)

    Al-batah, Mohammad Subhi; Isa, Nor Ashidi Mat; Klaib, Mohammad Fadel; Al-Betar, Mohammed Azmi

    2014-01-01

    To date, cancer of uterine cervix is still a leading cause of cancer-related deaths in women worldwide. The current methods (i.e., Pap smear and liquid-based cytology (LBC)) to screen for cervical cancer are time-consuming and dependent on the skill of the cytopathologist and thus are rather subjective. Therefore, this paper presents an intelligent computer vision system to assist pathologists in overcoming these problems and, consequently, produce more accurate results. The developed system consists of two stages. In the first stage, the automatic features extraction (AFE) algorithm is performed. In the second stage, a neuro-fuzzy model called multiple adaptive neuro-fuzzy inference system (MANFIS) is proposed for recognition process. The MANFIS contains a set of ANFIS models which are arranged in parallel combination to produce a model with multi-input-multioutput structure. The system is capable of classifying cervical cell image into three groups, namely, normal, low-grade squamous intraepithelial lesion (LSIL) and high-grade squamous intraepithelial lesion (HSIL). The experimental results prove the capability of the AFE algorithm to be as effective as the manual extraction by human experts, while the proposed MANFIS produces a good classification performance with 94.2% accuracy. PMID:24707316

  2. Comparative Analysis of Clinical Features of Lung Cancer in West China Hospital in 2000 and 2010

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    Xiaojun YAO

    2012-06-01

    Full Text Available Background and objective Primary lung cancer is one of the most common malignant tumors. The aim of the current study is to retrospectively analyze the clinical features variation of patients with primary bronchogenic carcinoma in West China Hospital Sichuan University to provide information for early detection and treatment of lung cancer. Methods We collected data of patients of permanent population in Sichuan province who diagnosed primary bronchogenic carcinoma in 2000 and 2010 in West China Hospital Sichuan University respectively for comparative analysis of reasons to visit the doctor, duration from symptom onset to visit the doctor, combined diseases, incidences of bi-primary carcinoma, family history of malignant tumor, sites of tumors, grade of differentiation, tumor staging and initial treatment modalities. Results A total of 2,167 cases (616 cases in 2000 and 1,551 cases in 2010 met inclusion criteria were retrieved for analysis. In 2010, compared with data of 2000, the rate of patients who visit the doctors because abnormalities were detected by health examination elevated remarkably (5.2% vs 16.7%, P<0.001, the duration from symptom onset to visit the doctor abridged significantly (P<0.001, patients with family history of malignant tumor increased significantly (3.9% vs 13.7%, P<0.001, the constituent ratio of poorly differentiated adenocarcinoma decreased (72.3% vs 51.8%, P=0.002 accompanied with low differentiated squamous cell carcinoma increased (59.4% vs 76.7%, P=0.002. For NSCLC staging, there is a notably increase of rate of stage Ia (1.0% vs 4.5%, P< 0.001 and stage IV (30.4% vs 37.8%, P<0.001 while decrease of stage IIIa (26.6% vs 14.8%, P=0.002. For initial treatment modalities, there is markedly increased chemotherapy rate of non-small cell lung cancer (NSCLC patients (41.8% vs 63.4%, P=0.002 while remarkably increased surgery rate of stage IIIa patients (41.8% vs 63.4%, P=0.002 and decreased surgery rate of stage IV

  3. Automated oral cancer identification using histopathological images: a hybrid feature extraction paradigm.

    Science.gov (United States)

    Krishnan, M Muthu Rama; Venkatraghavan, Vikram; Acharya, U Rajendra; Pal, Mousumi; Paul, Ranjan Rashmi; Min, Lim Choo; Ray, Ajoy Kumar; Chatterjee, Jyotirmoy; Chakraborty, Chandan

    2012-02-01

    Oral cancer (OC) is the sixth most common cancer in the world. In India it is the most common malignant neoplasm. Histopathological images have widely been used in the differential diagnosis of normal, oral precancerous (oral sub-mucous fibrosis (OSF)) and cancer lesions. However, this technique is limited by subjective interpretations and less accurate diagnosis. The objective of this work is to improve the classification accuracy based on textural features in the development of a computer assisted screening of OSF. The approach introduced here is to grade the histopathological tissue sections into normal, OSF without Dysplasia (OSFWD) and OSF with Dysplasia (OSFD), which would help the oral onco-pathologists to screen the subjects rapidly. The biopsy sections are stained with H&E. The optical density of the pixels in the light microscopic images is recorded and represented as matrix quantized as integers from 0 to 255 for each fundamental color (Red, Green, Blue), resulting in a M×N×3 matrix of integers. Depending on either normal or OSF condition, the image has various granular structures which are self similar patterns at different scales termed "texture". We have extracted these textural changes using Higher Order Spectra (HOS), Local Binary Pattern (LBP), and Laws Texture Energy (LTE) from the histopathological images (normal, OSFWD and OSFD). These feature vectors were fed to five different classifiers: Decision Tree (DT), Sugeno Fuzzy, Gaussian Mixture Model (GMM), K-Nearest Neighbor (K-NN), Radial Basis Probabilistic Neural Network (RBPNN) to select the best classifier. Our results show that combination of texture and HOS features coupled with Fuzzy classifier resulted in 95.7% accuracy, sensitivity and specificity of 94.5% and 98.8% respectively. Finally, we have proposed a novel integrated index called Oral Malignancy Index (OMI) using the HOS, LBP, LTE features, to diagnose benign or malignant tissues using just one number. We hope that this OMI can

  4. Finding Combination of Features from Promoter Regions for Ovarian Cancer-related Gene Group Classification

    KAUST Repository

    Olayan, Rawan S.

    2012-12-01

    In classification problems, it is always important to use the suitable combination of features that will be employed by classifiers. Generating the right combination of features usually results in good classifiers. In the situation when the problem is not well understood, data items are usually described by many features in the hope that some of these may be the relevant or most relevant ones. In this study, we focus on one such problem related to genes implicated in ovarian cancer (OC). We try to recognize two important OC-related gene groups: oncogenes, which support the development and progression of OC, and oncosuppressors, which oppose such tendencies. For this, we use the properties of promoters of these genes. We identified potential “regulatory features” that characterize OC-related oncogenes and oncosuppressors promoters. In our study, we used 211 oncogenes and 39 oncosuppressors. For these, we identified 538 characteristic sequence motifs from their promoters. Promoters are annotated by these motifs and derived feature vectors used to develop classification models. We made a comparison of a number of classification models in their ability to distinguish oncogenes from oncosuppressors. Based on 10-fold cross-validation, the resultant model was able to separate the two classes with sensitivity of 96% and specificity of 100% with the complete set of features. Moreover, we developed another recognition model where we attempted to distinguish oncogenes and oncosuppressors as one group from other OC-related genes. That model achieved accuracy of 82%. We believe that the results of this study will help in discovering other OC-related oncogenes and oncosuppressors not identified as yet.

  5. Patient feature based dosimetric Pareto front prediction in esophageal cancer radiotherapy

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Jiazhou; Zhao, Kuaike; Peng, Jiayuan; Xie, Jiang; Chen, Junchao; Zhang, Zhen; Hu, Weigang, E-mail: jackhuwg@gmail.com [Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China and Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032 (China); Jin, Xiance [The 1st Affiliated Hospital of Wenzhou Medical College, Wenzhou, Zhejiang 325000 (China); Studenski, Matthew [Department of Radiation Oncology, University of Miami-Miller School of Medicine, Miami, Florida 33136 (United States)

    2015-02-15

    Purpose: To investigate the feasibility of the dosimetric Pareto front (PF) prediction based on patient’s anatomic and dosimetric parameters for esophageal cancer patients. Methods: Eighty esophagus patients in the authors’ institution were enrolled in this study. A total of 2928 intensity-modulated radiotherapy plans were obtained and used to generate PF for each patient. On average, each patient had 36.6 plans. The anatomic and dosimetric features were extracted from these plans. The mean lung dose (MLD), mean heart dose (MHD), spinal cord max dose, and PTV homogeneity index were recorded for each plan. Principal component analysis was used to extract overlap volume histogram (OVH) features between PTV and other organs at risk. The full dataset was separated into two parts; a training dataset and a validation dataset. The prediction outcomes were the MHD and MLD. The spearman’s rank correlation coefficient was used to evaluate the correlation between the anatomical features and dosimetric features. The stepwise multiple regression method was used to fit the PF. The cross validation method was used to evaluate the model. Results: With 1000 repetitions, the mean prediction error of the MHD was 469 cGy. The most correlated factor was the first principal components of the OVH between heart and PTV and the overlap between heart and PTV in Z-axis. The mean prediction error of the MLD was 284 cGy. The most correlated factors were the first principal components of the OVH between heart and PTV and the overlap between lung and PTV in Z-axis. Conclusions: It is feasible to use patients’ anatomic and dosimetric features to generate a predicted Pareto front. Additional samples and further studies are required improve the prediction model.

  6. Clinical Features of Male Breast Cancer: Experiences from Seven Institutions Over 20 Years

    Science.gov (United States)

    Hong, Ji Hyung; Ha, Kyung Sun; Jung, Yun Hwa; Won, Hye Sung; An, Ho Jung; Lee, Guk Jin; Kang, Donghoon; Park, Ji Chan; Park, Sarah; Byun, Jae Ho; Suh, Young Jin; Kim, Jeong Soo; Park, Woo Chan; Jung, Sang Seol; Park, Il Young; Chung, Su-Mi; Woo, In Sook

    2016-01-01

    Purpose Breast cancer treatment has progressed significantly over the past 20 years. However, knowledge regarding male breast cancer (MBC) is sparse because of its rarity. This study is an investigation of the clinicopathologic features, treatments, and clinical outcomes of MBC. Materials and Methods Clinical records of 59 MBC patients diagnosed during 1995-2014 from seven institutions in Korea were reviewed retrospectively. Results Over a 20-year period, MBC patients accounted for 0.98% among total breast cancer patients, and increased every 5 years. The median age of MBC patientswas 66 years (range, 24 to 87 years). Forty-three patients (73%) complained of a palpable breast mass initially. The median symptom duration was 5 months (range, 1 to 36 months). Mastectomy was performed in 96% of the patients. The most frequent histology was infiltrating ductal carcinoma (75%). Ninety-one percent of tumors (38/43) were estrogen receptor–positive, and 28% (11/40) showed epidermal growth factor receptor 2 (HER-2) overexpression. After curative surgery, 42% of patients (19/45) received adjuvant chemotherapy; 77% (27/35) received hormone therapy. Five out of ten patients with HER-2 overexpressing tumors did not receive adjuvant anti–HER-2 therapy, while two out of four patients with HER-2 overexpressing tumors received palliative trastuzumab for recurrent and metastatic disease. Letrozole was used for one patient in the palliative setting. The median overall survival durations were 7.2 years (range, 0.6 to 17.0 years) in patients with localized disease and 2.9 years (range, 0.6 to 4.3 years) in those with recurrent or metastatic disease. Conclusion Anti–HER-2 and hormonal therapy, except tamoxifen, have been underutilized in Korean MBC patients compared to female breast cancer patients. With the development of precision medicine, active treatment with targeted agents should be applied. Further investigation of the unique pathobiology of MBC is clinically warranted

  7. Lipocalin 2 expression is associated with aggressive features of endometrial cancer

    International Nuclear Information System (INIS)

    . Increased LCN2 expression is associated with aggressive features and poor prognosis in endometrial cancer

  8. Relationship between COX-2 expression and clinicopathological features of colorectal cancers

    Institute of Scientific and Technical Information of China (English)

    詹俊; 刘建平; 朱兆华; 姚和瑞; 陈春燕

    2004-01-01

    Background Cyclo-oxgenase 2 (COX-2) is involved in prostaglandin synthesis in central nervous system, and it also plays a role in human carcinogenesis. Our purpose of this study is to investigate the COX-2 expression in different development stages of colorectal cancer, and to discuss the relationship between the gene expression and clinicopathological features of the cancer.Methods COX-2 expression was examined by immunohistochemical staining in 76 surgical specimens of colorectal cancer (44 of advanced stage and 32 of early stage), thirty-three adenomas and 18 normal colonic mucosal tissues taken by endoscopic biopsy. Kaplan-Meier survival curves and Cox proportional hazards regression were used to evaluate the relation of COX-2 to prognosis.Results COX-2 expression, divided into 4 grades from "-" to"+++", is respectively 83.3%, 16.7%, 0% and 0% in normal colonic mucosal tissues; 12.1%, 42.4%, 36.4% and 9.1% in adenomas; 6.3%, 28.1%, 46.9% and 18.7% in early colorectal cancers (ECCs), and 6.8%, 20.5%, 18.2% and 54.5% in advanced colorectal cancers (CRCs). The differences in COX-2 expression between advanced CRCs and early colorectal cancers (ECCs) as well as between the advanced CRCs and adenomas were statistically significant (P<0.01); but there was no significant difference between ECCs and adenomas. Kaplan-Meier survival analysis showed a significant difference in the survival curves between low high COX-2 groups (P<0.05). Cox proportional hazards regression showed that COX-2 expression was related to poorer long-term outcome with a hazard ratio of 2.665 unadjusted for other variables (P<0.05), and COX-2 expression was an independent risk factor of poor prognosis.Conclusions COX-2 expression is gradually up-regulated in the development from normal epithelium to adenomas and from ECCs to advanced CRCs. Alhough the COX-2 protein can not be regarded as a tumor marker to diagnose CRCs early, COX-2 expression can be regarded as an independent risk factor of poor

  9. Multi-channels statistical and morphological features based mitosis detection in breast cancer histopathology.

    Science.gov (United States)

    Irshad, Humayun; Roux, Ludovic; Racoceanu, Daniel

    2013-01-01

    Accurate counting of mitosis in breast cancer histopathology plays a critical role in the grading process. Manual counting of mitosis is tedious and subject to considerable inter- and intra-reader variations. This work aims at improving the accuracy of mitosis detection by selecting the color channels that better capture the statistical and morphological features having mitosis discrimination from other objects. The proposed framework includes comprehensive analysis of first and second order statistical features together with morphological features in selected color channels and a study on balancing the skewed dataset using SMOTE method for increasing the predictive accuracy of mitosis classification. The proposed framework has been evaluated on MITOS data set during an ICPR 2012 contest and ranked second from 17 finalists. The proposed framework achieved 74% detection rate, 70% precision and 72% F-Measure. In future work, we plan to apply our mitosis detection tool to images produced by different types of slide scanners, including multi-spectral and multi-focal microscopy.

  10. Clinical features, outcome and risk factors in cervical cancer patients after surgery for chronic radiation enteropathy

    International Nuclear Information System (INIS)

    Radical hysterectomy and radiotherapy have long been mainstays of cervical cancer treatment. Early stage cervical cancer (FIGO stage IB1–IIA) is traditionally treated using radical surgery combined with radiotherapy, while locally advanced cervical cancer is treated using radiotherapy alone or chemoradiotherapy. In this retrospective study, we describe and analyse the presenting clinical features and outcomes in our cohort and evaluate possible risk factors for postoperative morbidity in women who underwent surgery for chronic radiation enteropathy (CRE). One hundred sixty-six eligible cervical cancer patients who underwent surgery for CRE were retrospectively identified between September 2003 and July 2014 in a prospectively maintained database. Among them, 46 patients received radical radiotherapy (RRT) and 120 received radical surgery plus radiotherapy (RS + RT). Clinical features, postoperative morbidity and mortality, and risk factors for postoperative morbidity were analysed. RS + RT group patients were more likely to present with RTOG/EORTC grade III late morbidity (76.1 % vs 92.5 %; p = 0.004), while RRT group patients tended to show RTOG/EORTC grade IV late morbidity (23.9 % vs 7.5 %; p = 0.004). One hundred forty patients (84.3 %) were treated with aggressive resection (anastomosis 57.8 % and stoma 26.5 %). Overall and major morbidity, mortality and incidence of reoperation in the RRT and RS + RT groups did not differ significantly (63 % vs 64.2 % [p = 1.000], 21.7 % vs 11.7 % [p = 0.137], 6.5 % vs 0.8 % [p = 0.065] and 6.5 % vs 3.3 % [p = 0.360], respectively). However, incidence of permanent stoma and mortality during follow-up was higher in the RRT group than in the RS + RT group (44.2 % vs 12.6 % [p = 0.000] and 16.3 % vs 3.4 % [p = 0.004], respectively). In multivariate analysis, preoperative anaemia was significantly associated with overall morbidity (p = 0.015), while severe intra-abdominal adhesion (p = 0.017), ASA grades III–V (P = 0

  11. Radiogenomic analysis of breast cancer: dynamic contrast enhanced - magnetic resonance imaging based features are associated with molecular subtypes

    Science.gov (United States)

    Wang, Shijian; Fan, Ming; Zhang, Juan; Zheng, Bin; Wang, Xiaojia; Li, Lihua

    2016-03-01

    Breast cancer is one of the most common malignant tumor with upgrading incidence in females. The key to decrease the mortality is early diagnosis and reasonable treatment. Molecular classification could provide better insights into patient-directed therapy and prognosis prediction of breast cancer. It is known that different molecular subtypes have different characteristics in magnetic resonance imaging (MRI) examination. Therefore, we assumed that imaging features can reflect molecular information in breast cancer. In this study, we investigated associations between dynamic contrasts enhanced MRI (DCE-MRI) features and molecular subtypes in breast cancer. Sixty patients with breast cancer were enrolled and the MR images were pre-processed for noise reduction, registration and segmentation. Sixty-five dimensional imaging features including statistical characteristics, morphology, texture and dynamic enhancement in breast lesion and background regions were semiautomatically extracted. The associations between imaging features and molecular subtypes were assessed by using statistical analyses, including univariate logistic regression and multivariate logistic regression. The results of multivariate regression showed that imaging features are significantly associated with molecular subtypes of Luminal A (p=0.00473), HER2-enriched (p=0.00277) and Basal like (p=0.0117), respectively. The results indicated that three molecular subtypes are correlated with DCE-MRI features in breast cancer. Specifically, patients with a higher level of compactness or lower level of skewness in breast lesion are more likely to be Luminal A subtype. Besides, the higher value of the dynamic enhancement at T1 time in normal side reflect higher possibility of HER2-enriched subtype in breast cancer.

  12. Imaging Features for the Prediction of Extensive Intraductal Components in Invasive Cancer in Addition to the Histopathologic Grades

    Energy Technology Data Exchange (ETDEWEB)

    Han, Hye Yoen; Kim, Keum Won; Park, Yong Sung; Cho, Yong Jun; Hwang, Cheol Mog; Kim, Hyun Jin; Sul, Hae Jung; Yoon, Dae Sung [Konyang University, College of Medicine, Nonsan (Korea, Republic of); Kim, Gyu Soon [Eulji University, College of Medicine, Daejeon (Korea, Republic of)

    2009-12-15

    To evaluate the usefulness of US and mammography in detecting extensive intraductal component (EIC) in invasive cancer and correlating the results with the histopathologic grade. We retrospectively reviewed the mammographic and sonographic features of 125 invasive breast cancers, classified as 'invasive cancer with EIC' (n=57) and 'invasive cancer without EIC' (n=68). The mammographic features are classified as microcalcifications only, microcalcifications beyond the soft tissue density, soft tissue density without microcalcification, and sonographic features classified according to ten sonographic suspicious features for malignancy by Stavros. We calculated sensitivities, specificities, positive predictive value, negative predictive value, and accuracy to correlate them with histologic grade. Microcalcifications on mammography, calcification, duct extension, and a branching pattern on sonography were found to be statistically significant predictors of EIC. Also, a thick echogenic halo, angular margin, microlobuation, taller than wide feature on sonography, and soft tissue shadow without microcalcification on mammography showed a decreased risk of EIC. In addition, the presence of a branching pattern is an indicator of high histologic grade (p<0.05). Microcalcification on mammography, calcification, duct extension, and branching pattern on sonography are an indicator of the presence of EIC in invasive cancer. In addition, when a branching pattern is present, the tumor tends to have a high histologic grade.

  13. Tobacco and Cancer

    Science.gov (United States)

    ... Cancer? Breast Cancer Colon/Rectum Cancer Lung Cancer Prostate Cancer Skin Cancer Show All Cancer Types News and Features Cancer Glossary ACS Bookstore Cancer Information Cancer Basics Cancer Prevention & Detection Signs & Symptoms of Cancer Treatments & Side Effects ...

  14. Comprehensive profiling of DNA methylation in colorectal cancer reveals subgroups with distinct clinicopathological and molecular features

    International Nuclear Information System (INIS)

    Most previous studies of the CpG island methylator phenotype (CIMP) in colorectal cancer (CRC) have been conducted on a relatively small numbers of CpG sites. In the present study we performed comprehensive DNA methylation profiling of CRC with the aim of characterizing CIMP subgroups. DNA methylation at 1,505 CpG sites in 807 cancer-related genes was evaluated using the Illumina GoldenGate® methylation array in 28 normal colonic mucosa and 91 consecutive CRC samples. Methylation data was analyzed using unsupervised hierarchical clustering. CIMP subgroups were compared for various clinicopathological and molecular features including patient age, tumor site, microsatellite instability (MSI), methylation at a consensus panel of CpG islands and mutations in BRAF and KRAS. A total of 202 CpG sites were differentially methylated between tumor and normal tissue. Unsupervised hierarchical clustering of methylation data from these sites revealed the existence of three CRC subgroups referred to as CIMP-low (CIMP-L, 21% of cases), CIMP-mid (CIMP-M, 14%) and CIMP-high (CIMP-H, 65%). In comparison to CIMP-L tumors, CIMP-H tumors were more often located in the proximal colon and showed more frequent mutation of KRAS and BRAF (P < 0.001). Comprehensive DNA methylation profiling identified three CRC subgroups with distinctive clinicopathological and molecular features. This study suggests that both KRAS and BRAF mutations are involved with the CIMP-H pathway of CRC rather than with distinct CIMP subgroups

  15. Importance of Molecular Features of Non–Small Cell Lung Cancer for Choice of Treatment

    OpenAIRE

    Moran, Cesar

    2011-01-01

    Lung cancer is the leading cause of cancer-related deaths in the United States. Approximately 85% of lung cancer is categorized as non–small cell lung cancer, and traditionally, non–small cell lung cancer has been treated with surgery, radiation, and chemotherapy. Targeted agents that inhibit the epidermal growth factor receptor pathway have been developed and integrated into the treatment regimens in non–small cell lung cancer. Currently, approved epidermal growth factor receptor inhibitors ...

  16. Pathological Features of Gastric Cancer in Zhuanghe High-risk Area in China during 1992-2005

    Institute of Scientific and Technical Information of China (English)

    GONG Yue-hua; SUN Li-ping; LIU Yan-hou; HUANG he; SUN Guo-peng; WANG Quan-gang; YIN Yuan-jun; YUAN Yuan

    2008-01-01

    Objective:To investigate the pathological features and chronological changes of 1003 cases with gastric cancer in Zhuanghe high-risk area during 1992-2005 and the relationship between the changes and etiology factors in order tO make a clue for gastric cancer prevention. Methods:A total of 1003 gastric cancer specimens resected surgically between 1992-2005 in Zhuanghe Center Hospital were studied.The specimens were fixed in formalin and diagnosed by routine pathology. Results:The incidence of patients with gastric cancer was highest at age of 60-69,the next high was at age of 50-59 and it was significantly higher in male than in female(P<0.001),the ratio was 3.0∶1.During the past 14 years,there were 159(15.9%)EGC,195(19.4%)moderate and 649(64.7%)advanced gastric cancer detected.In macroscopical features,type Ⅲ remained dominant in EGC,the next was mixed type in EGC.In advanced gastric cancer the Borrmann's type Ⅲ remained the dominant,the next was type Ⅱ.For nodal metastasis,positive cases were decreasing and negative were increasing in EGC,moreover negative cases were higher than positive ones each year.There was no obvious trend in advanced cancer but positive cases were higher than negative ones each year.In histological features,papillary,moderately and poorly differentiated tubular adenocarcinoma remained downtrend,mucus adenocarcinoma and undifferentiation cancer remained uptrend year after year.The radio of intestinal to diffuse type decreased from 0.78 to 0.62 during the past 14 years. Conclusion:There were significant chorological trends of pathological characteristic of gastric cancer in Zhuanghe high-risk area during the past 14 years.

  17. Evaluation of correlation between CT image features and ERCC1 protein expression in assessing lung cancer prognosis

    Science.gov (United States)

    Tan, Maxine; Emaminejad, Nastaran; Qian, Wei; Sun, Shenshen; Kang, Yan; Guan, Yubao; Lure, Fleming; Zheng, Bin

    2014-03-01

    Stage I non-small-cell lung cancers (NSCLC) usually have favorable prognosis. However, high percentage of NSCLC patients have cancer relapse after surgery. Accurately predicting cancer prognosis is important to optimally treat and manage the patients to minimize the risk of cancer relapse. Studies have shown that an excision repair crosscomplementing 1 (ERCC1) gene was a potentially useful genetic biomarker to predict prognosis of NSCLC patients. Meanwhile, studies also found that chronic obstructive pulmonary disease (COPD) was highly associated with lung cancer prognosis. In this study, we investigated and evaluated the correlations between COPD image features and ERCC1 gene expression. A database involving 106 NSCLC patients was used. Each patient had a thoracic CT examination and ERCC1 genetic test. We applied a computer-aided detection scheme to segment and quantify COPD image features. A logistic regression method and a multilayer perceptron network were applied to analyze the correlation between the computed COPD image features and ERCC1 protein expression. A multilayer perceptron network (MPN) was also developed to test performance of using COPD-related image features to predict ERCC1 protein expression. A nine feature based logistic regression analysis showed the average COPD feature values in the low and high ERCC1 protein expression groups are significantly different (p < 0.01). Using a five-fold cross validation method, the MPN yielded an area under ROC curve (AUC = 0.669±0.053) in classifying between the low and high ERCC1 expression cases. The study indicates that CT phenotype features are associated with the genetic tests, which may provide supplementary information to help improve accuracy in assessing prognosis of NSCLC patients.

  18. Unsupervised feature construction and knowledge extraction from genome-wide assays of breast cancer with denoising autoencoders.

    Science.gov (United States)

    Tan, Jie; Ung, Matthew; Cheng, Chao; Greene, Casey S

    2015-01-01

    Big data bring new opportunities for methods that efficiently summarize and automatically extract knowledge from such compendia. While both supervised learning algorithms and unsupervised clustering algorithms have been successfully applied to biological data, they are either dependent on known biology or limited to discerning the most significant signals in the data. Here we present denoising autoencoders (DAs), which employ a data-defined learning objective independent of known biology, as a method to identify and extract complex patterns from genomic data. We evaluate the performance of DAs by applying them to a large collection of breast cancer gene expression data. Results show that DAs successfully construct features that contain both clinical and molecular information. There are features that represent tumor or normal samples, estrogen receptor (ER) status, and molecular subtypes. Features constructed by the autoencoder generalize to an independent dataset collected using a distinct experimental platform. By integrating data from ENCODE for feature interpretation, we discover a feature representing ER status through association with key transcription factors in breast cancer. We also identify a feature highly predictive of patient survival and it is enriched by FOXM1 signaling pathway. The features constructed by DAs are often bimodally distributed with one peak near zero and another near one, which facilitates discretization. In summary, we demonstrate that DAs effectively extract key biological principles from gene expression data and summarize them into constructed features with convenient properties. PMID:25592575

  19. Characterizing cancer cells with cancer stem cell-like features in 293T human embryonic kidney cells

    OpenAIRE

    Buchholz Thomas A; Lacerda Lara; Xu Wei; Robertson Fredika; Ueno Naoto T; Lucci Anthony; Landis Melissa D; Rodriguez Angel A; Li Li; Cohen Evan; Gao Hui; Krishnamurthy Savitri; Zhang Xiaomei; Debeb Bisrat G; Cristofanilli Massimo

    2010-01-01

    Abstract Background Since the first suggestion of prospectively identifiable cancer stem cells in solid tumors, efforts have been made to characterize reported cancer stem cell surrogates in existing cancer cell lines, and cell lines rich with these surrogates have been used to screen for cancer stem cell targeted agents. Although 293T cells were derived from human embryonic kidney, transplantation of these cells into the mammary fat pad yields aggressive tumors that self-renew as evidenced b...

  20. Correlation of pretreatment hemoglobin and platelet counts with clinicopathological features in colorectal cancer in Saudi population

    Directory of Open Access Journals (Sweden)

    Eyad F Al-Saeed

    2014-01-01

    Full Text Available Background/Aims: In Saudi Arabia, colorectal cancers (CRCs are registered as the second most common cancers. However, no data has been reported about correlation of the severity of the anemia and pretreatment platelets level with clinicopathological features of CRCs. We aimed to evaluate the association between pretreatment hemoglobin and platelets level and the clinicopathological features of CRC patients in Saudi Arabia. Materials and Methods: Between September 2005 and November 2011, One hundred and fifty-four confirmed CRC patients underwent thorough physical examination, blood investigations, endoscopic ultrasonography (EUS, and computed tomography (CT for staging before surgery. Findings of physical assessment, EUS, CT, and pathological specimens were correlated with pretreatment hemoglobin and platelets levels the Pearson-Kendall tau correlative coefficients. Results: The mean age of cohort was 56.6 years (range: 26-89. Left-sided CRC were predominant (97 patients; 63%. Mean size of primary tumor was 6 cms (1-18 SD ± 3.55. Mean values of hemoglobin, red blood cells, hematocrit, white blood cells, and platelets were 11.9 SD ± 2.3, 35.5 SD ± 5.7, 4.43 × 10 6 /mL SD ± 0.6, 7.67 10 6 /mL SD ± 2.44, and 343 × 10 3 /mL SD ± 164.4, respectively. Pretreatment hemoglobin was inversely correlated with primary tumor size (R: 0.71, R2: 1.55, P = 0.0001 and nodal status (R: 0.02, R2: 0.05, P = 0.01. Right-sided CRC had significantly low pretreatment hemoglobin levels ( P = 0.001. Interestingly, pretreatment thrombocytosis was seen only in right-sided CRC (P = 0.0001. Conclusion: Pretreatment anemia and thrombocytosis were found mainly in right-sided CRCs and advanced primary and nodal stages. Pretreatment hemoglobin and thrombocytosis can be considered as useful prognostic markers in CRC patients.

  1. Cancer of Unknown Primary in Adolescents and Young Adults: Clinicopathological Features, Prognostic Factors and Survival Outcomes.

    Directory of Open Access Journals (Sweden)

    Kanwal Raghav

    Full Text Available Cancer in adolescents and young adults (AYAs (15-39 years is increasingly recognized as a distinct clinical and biological entity. Cancer of unknown primary (CUP, a disease traditionally presenting in older adults with a median age of 65 years, poses several challenges when diagnosed in AYA patients. This study describes clinicopathological features, outcomes and challenges in caring for AYA-CUP patients.A retrospective review of 47 AYAs diagnosed with CUP at MD Anderson Cancer Center (6/2006-6/2013 was performed. Patients with favorable CUP subsets treated as per site-specific recommendations were excluded. Demographics, imaging, pathology and treatment data was collected using a prospectively maintained CUP database. Kaplan-Meier product limit method and log-rank test were used to estimate and compare overall survival. The cox-proportional model was used for multivariate analyses.Median age was 35 years (range 19-39. All patients underwent comprehensive workup. Adenocarcinoma was the predominant histology (70%. A median of 9 immunostains (range 2-29 were performed. The most common putative primary was biliary tract based on clinicopathological parameters as well as gene profiling. Patients presented with a median of 2 metastatic sites [lymph node (60%, lung (47%, liver (38% and bone (34%]. Most commonly used systemic chemotherapies included gemcitabine, fluorouracil, taxanes and platinum agents. Median overall survival for the entire cohort was 10.0 (95% confidence interval (CI: 6.7-15.4 months. On multivariate analyses, elevated lactate dehydrogenase (Hazard ratio (HR 3.66; 95%CI 1.52-8.82; P = 0.004, ≥3 metastatic sites (HR 5.34; 95%CI 1.19-23.9; P = 0.029, and tissue of origin not tested (HR 3.4; 95%CI 1.44-8.06; P = 0.005 were associated with poor overall survival. Culine's CUP prognostic model (lactate dehydrogenase, performance status, liver metastases was validated in this cohort (median overall survival: good-risk 25.2 months vs

  2. Strain measurement by cardiovascular magnetic resonance in pediatric cancer survivors: validation of feature tracking against harmonic phase imaging

    Energy Technology Data Exchange (ETDEWEB)

    Lu, Jimmy C. [C.S. Mott Children' s Hospital, University of Michigan Congenital Heart Center, Ann Arbor, MI (United States); University of Michigan, Department of Pediatrics and Communicable Diseases, Division of Pediatric Cardiology, Ann Arbor, MI (United States); University of Michigan, Department of Radiology, Section of Pediatric Radiology, Ann Arbor, MI (United States); Connelly, James A. [University of Michigan, Department of Pediatrics and Communicable Diseases, Division of Hematology-Oncology, Ann Arbor, MI (United States); Zhao, Lili [University of Michigan, Department of Biostatistics, Ann Arbor, MI (United States); Agarwal, Prachi P. [University of Michigan, Department of Radiology, Division of Cardiothoracic Radiology, Ann Arbor, MI (United States); Dorfman, Adam L. [University of Michigan, Department of Pediatrics and Communicable Diseases, Division of Pediatric Cardiology, Ann Arbor, MI (United States); University of Michigan, Department of Radiology, Section of Pediatric Radiology, Ann Arbor, MI (United States)

    2014-09-15

    Left ventricular strain may be a more sensitive marker of left ventricular dysfunction than ejection fraction in pediatric cancer survivors after anthracycline therapy, but there is limited validation of strain measurement by feature tracking on cardiovascular magnetic resonance (MR) images. To compare left ventricular circumferential and radial strain by feature tracking vs. harmonic phase imaging analysis (HARP) in pediatric cancer survivors. Twenty-six patients (20.2 ± 5.6 years old) underwent cardiovascular MR at least 5 years after completing anthracycline therapy. Circumferential and radial strain were measured at the base, midventricle and apex from short-axis myocardial tagged images by HARP, and from steady-state free precession images by feature tracking. Left ventricular ejection fraction more closely correlated with global circumferential strain by feature tracking (r = -0.63, P = 0.0005) than by HARP (r = -0.39, P = 0.05). Midventricular circumferential strain did not significantly differ by feature tracking or HARP (-20.8 ± 3.4 vs. -19.5 ± 2.5, P = 0.07), with acceptable limits of agreement. Midventricular circumferential strain by feature tracking strongly correlated with global circumferential strain by feature tracking (r = 0.87, P < 0.0001). Radial strain by feature tracking had poor agreement with HARP, particularly at higher values of radial strain. Intraobserver and interobserver reproducibility was excellent for feature tracking circumferential strain, but reproducibility was poor for feature tracking radial strain. Midventricular circumferential strain by feature tracking is a reliable and reproducible measure of myocardial deformation in patients status post anthracycline therapy, while radial strain measurements are unreliable. Further studies are necessary to evaluate potential relation to long-term outcomes. (orig.)

  3. THE SIGNIFICANCE OF FORM FACTOR IN THE QUANTITATIVE ANALYSIS OF THE MORPHOLOGICAL FEATURES OF BREAST CANCER NUCLEI

    Institute of Scientific and Technical Information of China (English)

    杨建茹; 管增伟; 刘长安

    2001-01-01

    Objective In the present study, an important aspect in medical image analysis, quantification of form factor was investigated. It is suggested that nuclear form of both normal and cancer cells of the same tissue should be taken into account when FF( form factor) is analyzed.The value of FF can’t be independently used to serve as evidence. Because breast tissue is complex, breast cancer cells take on diverse and complicated morphological features.Methods Slides of the tissue sections of breast cancer were pathologically confirmed and analyzed in terms of the morphological parameters using DMRXA full-automatic bio-fluorescent microscope and Q550IW computer(Leica, Germany). Of the samples examined, there were 9 cases of adenocarcinoma and 6 normal controls.Results Statistical analysis was performed using SAS software. The results are listed in Table Ⅰ. We found that the nuclear area, perimeter, length and breadth of breast cancer cells were significantly higher than those of normal breast cells(P<0.01). From the data given in the paper it can be seen that FF in the control is significantly higher than that in breast cancer.Conclusion Breast tissue is complicated, consisting of simple cubiodal epithelium, simple columnar epithelium and multiple columnar epithelium, etc. These different cells may have round or ovoid nuclei. Breast cancer cells take on diverse and complicated morphological features. They are classified as duct, lobular and special carcinoma according to their histogenesis and morphological structures. Their nuclear morphological features are diverse as well. Therefore, nuclear form of both normal and cancer cells of the same tissue should be taken into account when form factor is analyzed, nuclear FF alone is not reliable enough to distinguish normal from malignant breast cells.

  4. Clinical features and prognostic factors for patients with bone metastases from prostate cancer

    Institute of Scientific and Technical Information of China (English)

    Jian He; Zhao-Chong Zeng; Ping Yang; Bing Chen; We Jiang; Shi-Suo Du

    2012-01-01

    To identify the clinical features and independent predictors of survival in patients with bone metastases from prostate cancer (PCa).We retrospectively analysed 115 PCa patients with bone metastases between 1997 and 2009.The overall survival rate after bone metastases was calculated using the Kaplan-Meier method.The prognostic factors were identified by univariate analysis using a log-rank test and by multivariate analysis using Cox proportional hazards regression models.The follow-up rate was 100%,the follow-up cases during 1,3 and 5 years were 103,79 and 55,respectively.The 1-,3- and 5-year survival rates were 89.1%,60.9% and 49.8%,respectively,with a median survival time of 48.5 months for patients with bone metastases from PCa.In univariate analysis,age,Gleason score,clinical stage,the number of bone lesions,alkaline phosphatase (ALP) level,invasion of neighbouring organs and non-regional lymph node metastases were correlated with prognosis.By multivariate analysis using Cox regression,ALP level,Gleason score and non-regional lymph node metastases were independent prognostic factors.These prognostic factors will help us to determine the appropriate dose and fraction of radiotherapy for these patients.

  5. Analysis on the childhood and adolescent differentiated thyroid cancer: clinical features and radioiodine treatment

    International Nuclear Information System (INIS)

    Objective: Children with differentiated thyroid cancer (DTC) frequently present with more extensive disease than adults. The aim of this study was to characterize the clinical features of child-hood and adolescent DTC and evaluate the outcome and safety of radioiodine treatment. Methods: The records of 38 childhood and adolescent DTC cases, with 28 females and 10 males (mean age: 16.4 years) were reviewed. At diagnosis, all had metastatic lesions with 38 at regional lymph nodes, 15 at lung, 2 at brain and bone. Twenty-three had a total thyroidectomy, 7 had subtotal thyroidectomy, 5 had lobectomy, and 3 had other treatment. All received post-operative radioiodine therapy. All had follow-up for at least one year. Results: At the time of follow-up, all were survive (with a median follow-up of 5.13 years). Four-teen patients had no evidence of disease, 16 had partial remission, and 8 were stable disease. Conclusions: DTC of the thyroid in childhood and adolescent has high risks of residual/recurrence and metastasis. Post-thyroidectomy oral administration of radioiodine was an effective and safety adjuvant therapy for outcomes. (authors)

  6. Relationship between H.Pylori infection and clinicopathological features and prognosis of gastric cancer

    International Nuclear Information System (INIS)

    Aimed to assess the relationship between H.Pylori and the clinicopathological features and prognosis of gastric cancer by quantitative detection of H.Pylori. 157 patients were enrolled, all patients had a record of clinicopathological parameters. Specimens including the tumor and non-neoplastic were detected for H.Pylori by Real-Time PCR and analyzed clinical data retrospectively. Variables independently affecting prognosis were investigated by means of multivariate analysis using the Cox proportional hazards model. H.Pylori infection was greater in non-neoplastic tissue than the tumor tissue (p < 0.05), H.Pylori infection and its copies were related to the tumor site and N staging (p < 0.05). Overall survival (OS) in all 157 patients has no correlation with the H.Pylori infection status (p = 0.715). As to the patients who underwent a curative surgery, relapse-free survival (RFS) has no correlation with the H.Pylori infection status (p = 0.639). Among the H.Pylori positive patients, OS and RFS of those with higher copies were longer than in patients with low copies, but there was no significant statistical difference. H.Pylori infection status and its copies were related to N staging. The OS and RFS in patients with positive H.Pylori status has no significant difference from the patients with negative H.Pylori status

  7. Bilateral image subtraction features for multivariate automated classification of breast cancer risk

    Science.gov (United States)

    Celaya-Padilla, Jose M.; Rodriguez-Rojas, Juan; Galván-Tejada, Jorge I.; Martínez-Torteya, Antonio; Treviño, Victor; Tamez-Peña, José G.

    2014-03-01

    Early tumor detection is key in reducing breast cancer deaths and screening mammography is the most widely available method for early detection. However, mammogram interpretation is based on human radiologist, whose radiological skills, experience and workload makes radiological interpretation inconsistent. In an attempt to make mammographic interpretation more consistent, computer aided diagnosis (CADx) systems has been introduced. This paper presents an CADx system aimed to automatically triage normal mammograms form suspicious mammograms. The CADx system co-reregister the left and breast images, then extracts image features from the co-registered mammographic bilateral sets. Finally, an optimal logistic multivariate model is generated by means of an evolutionary search engine. In this study, 440 subjects form the DDSM public data sets were used: 44 normal mammograms, 201 malignant mass mammograms, and 195 mammograms with malignant calci cations. The results showed a cross validation accuracy of 0.88 and an area under receiver operating characteristic (AUC) of 0.89 for the calci cations vs. normal mammograms. The optimal mass vs. normal mammograms model obtained an accuracy of 0.85 and an AUC of 0.88.

  8. Targeting the LOX/hypoxia axis reverses many of the features that make pancreatic cancer deadly

    DEFF Research Database (Denmark)

    Miller, Bryan W; Morton, Jennifer P; Pinese, Mark;

    2015-01-01

    Pancreatic ductal adenocarcinoma (PDAC) is one of the leading causes of cancer-related mortality. Despite significant advances made in the treatment of other cancers, current chemotherapies offer little survival benefit in this disease. Pancreaticoduodenectomy offers patients the possibility...

  9. Inferences of drug responses in cancer cells from cancer genomic features and compound chemical and therapeutic properties

    Science.gov (United States)

    Wang, Yongcui; Fang, Jianwen; Chen, Shilong

    2016-01-01

    Accurately predicting the response of a cancer patient to a therapeutic agent is a core goal of precision medicine. Existing approaches were mainly relied primarily on genomic alterations in cancer cells that have been treated with different drugs. Here we focus on predicting drug response based on integration of the heterogeneously pharmacogenomics data from both cell and drug sides. Through a systematical approach, named as PDRCC (Predict Drug Response in Cancer Cells), the cancer genomic alterations and compound chemical and therapeutic properties were incorporated to determine the chemotherapeutic response in cancer patients. Using the Cancer Cell Line Encyclopedia (CCLE) study as the benchmark dataset, all pharmacogenomics data exhibited their roles in inferring the relationships between cancer cells and drugs. When integrating both genomic resources and compound information, the prediction coverage was significantly increased. The validity of PDRCC was also supported by its effective in uncovering the unknown cell-drug associations with database and literature evidences. It set the stage for clinical testing of novel therapeutic strategies, such as the sensitive association between cancer cell ‘A549_LUNG’ and compound ‘Topotecan’. In conclusion, PDRCC offers the possibility for faster, safer, and cheaper the development of novel anti-cancer therapeutics in the early-stage clinical trails. PMID:27645580

  10. Automated Breast Cancer Diagnosis based on GVF-Snake Segmentation, Wavelet Features Extraction and Neural Network Classification

    Directory of Open Access Journals (Sweden)

    Abderrahim Sebri

    2007-01-01

    Full Text Available Breast cancer accounts for the second most cancer diagnoses among women and the second most cancer deaths in the world. In fact, more than 11000 women die each year, all over the world, because this disease. The automatic breast cancer diagnosis is a very important purpose of medical informatics researches. Some researches has been oriented to make automatic the diagnosis at the step of mammographic diagnosis, some others treated the problem at the step of cytological diagnosis. In this work, we describes the current state of the ongoing the BC automated diagnosis research program. It is a software system that provides expert diagnosis of breast cancer based on three step of cytological image analysis. The first step is based on segmentation using an active contour for cell tracking and isolating of the nucleus in the studied image. Then from this nucleus, have been extracted some textural features using the wavelet transforms to characterize image using its texture, so that malign texture can be differentiated from benign on the assumption that tumoral texture is different from the texture of other kinds of tissues. Finally, the obtained features will be introduced as the input vector of a Multi-Layer Perceptron (MLP, to classify the images into malign and benign ones.

  11. Features of undiagnosed breast cancers at screening breast MR imaging and potential utility of computer-aided evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Seo, Mirinae; Cho, Nariya; Bea, Min Sun; Koo, Hye Ryoung; Kim, Won Hwa; Lee, Su Hyun; Chu, A Jung [Dept. of Radiology, Seoul National University Hospital, Seoul (Korea, Republic of)

    2016-02-15

    To retrospectively evaluate the features of undiagnosed breast cancers on prior screening breast magnetic resonance (MR) images in patients who were subsequently diagnosed with breast cancer, as well as the potential utility of MR-computer-aided evaluation (CAE). Between March 2004 and May 2013, of the 72 consecutive pairs of prior negative MR images and subsequent MR images with diagnosed cancers (median interval, 32.8 months; range, 5.4-104.6 months), 36 (50%) had visible findings (mean size, 1.0 cm; range, 0.3-5.2 cm). The visible findings were divided into either actionable or under threshold groups by the blinded review by 5 radiologists. MR imaging features, reasons for missed cancer, and MR-CAE features according to actionability were evaluated. Of the 36 visible findings on prior MR images, 33.3% (12 of 36) of the lesions were determined to be actionable and 66.7% (24 of 36) were underthreshold; 85.7% (6 of 7) of masses and 31.6% (6 of 19) of non-mass enhancements were classified as actionable lesions. Mimicking physiologic enhancements (27.8%, 10 of 36) and small lesion size (27.8%, 10 of 36) were the most common reasons for missed cancer. Actionable findings tended to show more washout or plateau kinetic patterns on MR-CAE than underthreshold findings, as the 100% of actionable findings and 46.7% of underthreshold findings showed washout or plateau (p = 0.008). MR-CAE has the potential for reducing the number of undiagnosed breast cancers on screening breast MR images, the majority of which are caused by mimicking physiologic enhancements or small lesion size.

  12. The role of leptin in gastric cancer: Clinicopathologic features and molecular mechanisms

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Kang Nyeong [Department of Internal Medicine, Hanyang University College of Medicine, Seoul (Korea, Republic of); Choi, Ho Soon, E-mail: hschoi96@hanyang.ac.kr [Department of Internal Medicine, Hanyang University College of Medicine, Seoul (Korea, Republic of); Yang, Sun Young [Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul (Korea, Republic of); Park, Hyun Ki; Lee, Young Yiul; Lee, Oh Young; Yoon, Byung Chul; Hahm, Joon Soo [Department of Internal Medicine, Hanyang University College of Medicine, Seoul (Korea, Republic of); Paik, Seung Sam [Pathology, Hanyang University College of Medicine, Seoul (Korea, Republic of)

    2014-04-18

    Highlights: • Leptin and Ob-R are expressed in gastric adenoma and early and advanced cancer. • Leptin is more likely associated with differentiated gastric cancer or cardia cancer. • Leptin proliferates gastric cancer cells via activating the STAT3 and ERK1/2 pathways. - Abstract: Obesity is associated with certain types of cancer, including gastric cancer. However, it is still unclear whether obesity-related cytokine, leptin, is implicated in gastric cancer. Therefore, we aimed to investigate the role of leptin in gastric cancer. The expression of leptin and its receptor, Ob-R, was assessed by immunohistochemical staining and was compared in patients with gastric adenoma (n = 38), early gastric cancer (EGC) (n = 38), and advanced gastric cancer (AGC) (n = 38), as a function of their clinicopathological characteristics. Gastric cancer cell lines were studied to investigate the effects of leptin on the signal transducer and activator of transcription-3 (STAT3) and extracellular receptor kinase 1/2 (ERK1/2) signaling pathways using MTT assays, immunoblotting, and inhibition studies. Leptin was expressed in gastric adenomas (42.1%), EGCs (47.4%), and AGCs (43.4%). Ob-R expression tended to increase from gastric adenoma (2%), through EGC (8%), to AGC (18%). Leptin induced the proliferation of gastric cancer cells by activating STAT3 and ERK1/2 and up-regulating the expression of vascular endothelial growth factor (VEGF). Blocking Ob-R with pharmacological inhibitors and by RNAi decreased both the leptin-induced activation of STAT3 and ERK1/2 and the leptin-induced expression of VEGF. Leptin plays a role in gastric cancer by stimulating the proliferation of gastric cancer cells via activating the STAT3 and ERK1/2 pathways.

  13. Differential CT features between malignant mesothelioma and pleural metastasis from lung cancer or extra thoracic primary tumor mimicking malignant mesothelioma

    International Nuclear Information System (INIS)

    To evaluate the differential CT features found among malignant mesothelioma and pleural metastasis from lung cancer and from extra-thoracic primary tumor which on CT mimic malignant mesothelioma. Forty-four patients who on chest CT scans showed pleural thickening suggesting malignant pleural disease and in whom this condition was pathologically confirmed were included in this study. On the basis of their pathologically proven primary disease (malignant mesothelioma (n=3D14), pleural metastasis of lung cancer (n=3D18), extra thoracic primary tumor (n=3D12). They were divided into three groups. Cases of lung which on CT showed a primary lung nodule or endobronchial mass with pleural lesion, or manifested only pleural effusion, were excluded. The following eight CT features were retrospectively analyzed: 1) configuration of pleural lesion (type I, single or multiple separate nodules, type II, localized flat pleural thickening, type III, diffuse flat pleural thickening; type IV, type III with pleural nodules superimposed; type V, mass filling the hemithorax), 2) the presence of pleural effusion, 3) chest wall or rib invasion, 4) the involvement of a major fissure, 5) extra-pleural fat proliferation, 6) calcified plaque, 7) metastatic lymph nodes, 8) metastatic lung modules. In malignant mesothelioma, type IV (8/14) or II (4/14) pleural thickening was relatively frequent. Pleural metastasis of lung cancer favored type IV (8/18) or I (6/18) pleural thickening, while pleural metastasis from extrathoracic primary tumor showed a variable thickening configuration, except type V. Pleural metastasis from lung cancer and extrapleural primary tumor more frequently showed type I configuration than did malignant mesothelioma, and there were significant differences among the three groups. Fissural involvement, on the other hand, was significantly more frequent in malignant mesothelioma than in pleural metastasis from lung cancer or extrapleural primary tumor. Metastatic lymph nodes

  14. Comparison of Radiologic Features of Triple-Negative and Estrogen Receptor/Progesteron Receptor Positive Breast Cancer

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Young Joong; Kim, Keum Won; Kim, Dae Ho; Cho, Yong Jun; Hwang, Cheol Mog; Seo, Jae Young; Kim, Jin Suk; Yoon, Dae Sung [Dept. of Konyang University College of Medicine, Konyang University Hospital, Daejeon (Korea, Republic of); Kim, Gyu Soon [Dept. of Radiology, Eulji University College of Medicine, Eulji University Hospital, Daejeon (Korea, Republic of)

    2013-06-15

    To retrospectively investigate the imaging [mammographic, ultrasonographic (US), magnetic resonance (MR) imaging] features and standardized uptake values (SUV) in positron emission tomography (PET)/computed tomography (CT) of triple-negative breast cancers (TNBC) and to compare them with breast cancers that are either estrogen receptor (ER) positive or progesteron receptor (PR) positive. 155 breast cancers cases were identified in 134 women (mean age, 51 years; range, 31-86 years). Surgically confirmed TNBC (n = 27) and ER-positive/PR-positive breast cancers (n = 81) were included among them. Cancers were investigated with mammography (n = 81), US (n = 106), MR imaging (n = 34) and PET-CT (n = 59). Mammographic findings are identified by detection of characteristic masses and microcalcifications. US findings included tumor size, margin, tumor shape, calcification and posterior shadowing. MR findings included tumor size, shape, margin, internal enhancement, intratumoral signal intensity and kinetics. Peak SUVs (p-SUV) of breast cancers were evaluated in PET/CT. These findings were compared with TNBC and ER/PR positive groups. Mammographic findings had no significant association with the TNBC. High pathological grade (p < 0.05), larger than 2 cm in size, well-marginal mass, and round or oval-shaped (p < 0.05) is US were significantly associated with TNBC. In MR imaging, round mass shape (p < 0.05), well-circumscribed mass margin (p < 0.05), rim enhancement (p < 0.05), were significantly associated with TNBC. The peak SUV of TNBC tend to be higher than that of ER-positive/PR-positive breast cancer (7.95 {+-} 5.50 vs. 4.91 {+-} 3.00, p < 0.05). TNBC tend to have high pathological grade, are of a large, round and smooth mass with rim enhancement on MR and US. In addition to above features, PET-CT with SUV estimation can improve the accuracy of test through the evaluation of TNBC.

  15. Loss of EBP50 stimulates EGFR activity to induce EMT phenotypic features in biliary cancer cells.

    Science.gov (United States)

    Clapéron, A; Guedj, N; Mergey, M; Vignjevic, D; Desbois-Mouthon, C; Boissan, M; Saubaméa, B; Paradis, V; Housset, C; Fouassier, L

    2012-03-15

    Scaffold proteins form multiprotein complexes that are central to the regulation of intracellular signaling. The scaffold protein ezrin-radixin-moesin-binding phosphoprotein 50 (EBP50) is highly expressed at the plasma membrane of normal biliary epithelial cells and binds epidermal growth factor receptor (EGFR), a tyrosine kinase receptor with oncogenic properties. This study investigated EBP50-EGFR interplay in biliary cancer. We report that in a collection of 106 cholangiocarcinomas, EBP50 was delocalized to the cytoplasm of tumor cells in 66% of the cases. Ectopic expression of EBP50 was correlated with the presence of satellite nodules and with the expression of EGFR, which was at the plasma membrane, implying a loss of interaction with EBP50 in these cases. In vitro, loss of interaction between EBP50 and EGFR was mimicked by EBP50 depletion using a small interfering RNA approach in human biliary carcinoma cells co-expressing the two proteins at their plasma membrane, and in which interaction between EBP50 and EGFR was validated. EBP50 depletion caused an increase in EGFR expression at their surface, and a sustained activation of the receptor and of its downstream effectors (extracellular signal-regulated kinase 1/2, signal transducer and activator of transcription 3) in both basal and EGF-stimulated conditions. Cells lacking EBP50 showed epithelial-to-mesenchymal transition-associated features, including reduction in E-cadherin and cytokeratin-19 expression, induction of S100A4 and of the E-cadherin transcriptional repressor, Slug, and loss of cell polarity. Accordingly, depletion of EBP50 induced the disruption of adherens junctional complexes, the development of lamellipodia structures and the subsequent acquisition of motility properties. All these phenotypic changes were prevented upon inhibition of EGFR tyrosine kinase by gefitinib. These findings indicate that loss of EBP50 at the plasma membrane in tumor cells may contribute to biliary carcinogenesis

  16. Association of mammographic image feature change and an increasing risk trend of developing breast cancer: an assessment

    Science.gov (United States)

    Tan, Maxine; Leader, Joseph K.; Liu, Hong; Zheng, Bin

    2015-03-01

    We recently investigated a new mammographic image feature based risk factor to predict near-term breast cancer risk after a woman has a negative mammographic screening. We hypothesized that unlike the conventional epidemiology-based long-term (or lifetime) risk factors, the mammographic image feature based risk factor value will increase as the time lag between the negative and positive mammography screening decreases. The purpose of this study is to test this hypothesis. From a large and diverse full-field digital mammography (FFDM) image database with 1278 cases, we collected all available sequential FFDM examinations for each case including the "current" and 1 to 3 most recently "prior" examinations. All "prior" examinations were interpreted negative, and "current" ones were either malignant or recalled negative/benign. We computed 92 global mammographic texture and density based features, and included three clinical risk factors (woman's age, family history and subjective breast density BIRADS ratings). On this initial feature set, we applied a fast and accurate Sequential Forward Floating Selection (SFFS) feature selection algorithm to reduce feature dimensionality. The features computed on both mammographic views were individually/ separately trained using two artificial neural network (ANN) classifiers. The classification scores of the two ANNs were then merged with a sequential ANN. The results show that the maximum adjusted odds ratios were 5.59, 7.98, and 15.77 for using the 3rd, 2nd, and 1st "prior" FFDM examinations, respectively, which demonstrates a higher association of mammographic image feature change and an increasing risk trend of developing breast cancer in the near-term after a negative screening.

  17. Facial Nerve Palsy: An Unusual Presenting Feature of Small Cell Lung Cancer

    Directory of Open Access Journals (Sweden)

    Ozcan Yildiz

    2011-01-01

    Full Text Available Lung cancer is the second most common type of cancer in the world and is the most common cause of cancer-related death in men and women; it is responsible for 1.3 million deaths annually worldwide. It can metastasize to any organ. The most common site of metastasis in the head and neck region is the brain; however, it can also metastasize to the oral cavity, gingiva, tongue, parotid gland and lymph nodes. This article reports a case of small cell lung cancer presenting with metastasis to the facial nerve.

  18. Review on Feature Selection Techniques and the Impact of SVM for Cancer Classification using Gene Expression Profile

    CERN Document Server

    George, G Victo Sudha; 10.5121/ijcses.2011.2302

    2011-01-01

    The DNA microarray technology has modernized the approach of biology research in such a way that scientists can now measure the expression levels of thousands of genes simultaneously in a single experiment. Gene expression profiles, which represent the state of a cell at a molecular level, have great potential as a medical diagnosis tool. But compared to the number of genes involved, available training data sets generally have a fairly small sample size for classification. These training data limitations constitute a challenge to certain classification methodologies. Feature selection techniques can be used to extract the marker genes which influence the classification accuracy effectively by eliminating the un wanted noisy and redundant genes This paper presents a review of feature selection techniques that have been employed in micro array data based cancer classification and also the predominant role of SVM for cancer classification.

  19. REVIEW ON FEATURE SELECTION TECHNIQUES AND THE IMPACT OF SVM FOR CANCER CLASSIFICATION USING GENE EXPRESSION PROFILE

    Directory of Open Access Journals (Sweden)

    G.Victo Sudha George

    2011-09-01

    Full Text Available The DNA microarray technology has modernized the approach of biology research in such a way thatscientists can now measure the expression levels of thousands of genes simultaneously in a singleexperiment. Gene expression profiles, which represent the state of a cell at a molecular level, have greatpotential as a medical diagnosis tool. But compared to the number of genes involved, available trainingdata sets generally have a fairly small sample size for classification. These training data limitationsconstitute a challenge to certain classification methodologies. Feature selection techniques can be usedto extract the marker genes which influence the classification accuracy effectively by eliminating the unwanted noisy and redundant genes This paper presents a review of feature selection techniques that havebeen employed in micro array data based cancer classification and also the predominant role of SVMfor cancer classification.

  20. The Immunohistochemical Assessment of ALDH1 Activity in Breast Cancer and it’s Correlation With Pathologic Features

    Directory of Open Access Journals (Sweden)

    Molanae S

    2011-12-01

    Full Text Available Background: Aldehyde dehydrogenase 1 (ALDH1 is a marker of normal and malignant human mammary stem cells that has been reported to be associated with poor prognosis. Studies on the detection of ALDH1+ cells can help the treatment of patients with breast cancer. The aim of this study was to determine the activity of ALDH1 in breast cancer and its relationship with the pathological features of the tumors.Methods: ALDH1 activity was studied by immunohistochemistry in 121 paraffin-embedded histological samples of breast cancer patients from Department of Pathology of Milad Hospital, Tehran, Iran during 2006-2007. The relationship of ALDH1 with the pathological features of the tumors (size, grade, lymph node metastasis and vascular invasion was also investigated.Results: Eighty-five percent of breast cancer samples expressed ALDH1 in their cytoplasm with a wide range of intensity (weak, moderate and strong, while 18 samples (14.9% were completely negative. The majority of cases (97.1% showed ALDH1 positivity in the stroma of tumors which varied from weak (2.9% to strong (73.5%. ALDH1 H-score (ALDH1% × intensity of tumor cells varied from 0 to 240 (mean= 80. ALDH1 H-score was ≤80 in 62 (51.2% and >80 in 59 (48.8% samples. There was no statistically significant relationship between ALDH1 H-score and age (P=0.358, tumor size (P=0.375, tumor grade (P=0.207, lymph node metastasis (P=0.125 or vascular invasion (P=0.190.Conclusion: ALDH1 activity was demonstrated in 85.1% of breast cancer samples although its level of expression was not correlated with the pathologic features of breast tumors.

  1. Serum high mobility group box-1 (HMGB1 is closely associated with the clinical and pathologic features of gastric cancer

    Directory of Open Access Journals (Sweden)

    Chung Jae

    2009-05-01

    Full Text Available Abstract Background High mobility group box-1 (HMGB1 is a newly recognized factor regulating cancer cell tumorigenesis, expansion and invasion. We investigated the correlation between the serum HMGB1 levels and the clinical and pathologic features of gastric cancer and evaluated the validity of HMGB1 as a potential biomarker for the early diagnosis of gastric cancer. Methods A total of 227 subjects were classified into 5 disease groups according to the 'gastritis-dysplasia-carcinoma' sequence of gastric carcinogenesis and their serum levels of HMGB1 were analyzed by an enzyme-linked immunosorbent assay (ELISA method. Clinical parameters, International Union Against Cancer (UICC TNM stage, cancer size, differentiation or lymphatic invasion, vascular or perineural invasion and prognosis were used as analysis variables. Results The serum HMGB1 levels were significantly different among disease groups (ANOVA, p and HMGB1 levels tended to increase according to the progression of gastric carcinogenesis. Serum HMGB1 levels were significantly associated with depth of invasion, lymph node metastasis, tumor size, and poor prognosis (p . However, HMGB1 levels were not associated with patient gender or age, differentiation of tumor cells, or lymphatic, vascular and perineural invasion, or the existence of distant metastasis in advanced cancer (p > 0.05. The sensitivity and specificity of serum HMGB1 was 71% and 67% (cut-off value of 5 ng/ml for the diagnosis of early gastric cancer, and 70% and 64% (cut-off value of 4 ng/ml for the diagnosis of high-risk lesions, respectively. These values were greater than those for carcinoembryonic antigen (CEA (30–40% of sensitivity. Conclusion HMGB1 appears to be a useful serological biomarker for early diagnosis as well as evaluating the tumorigenesis, stage, and prognosis of gastric cancer.

  2. The Correlation between Microsatellite Instability and the Features of Sporadic Colorectal Cancer in the North Part of Iran

    Directory of Open Access Journals (Sweden)

    Masoumeh Faghani

    2012-01-01

    Full Text Available Background. The aim of this study was to determine the correlation between MSI and sporadic colorectal cancer in Guilan province, North part of Iran. Materials and Methods. A total of 96 patients who underwent resection for sporadic colorectal cancer in Guilan province were studied. No patients had positive family history of cancers. The frequencies of MSI were analyzed by testing the BAT-26 and BAT-25 markers. Results. MSI analysis revealed that 22.9% of the tumors (22 patients were microsatellite instability positive and 77.1% (74 patients were microsatellite instability negative. The highest rate of MSI (40.9% was found in the rectal region. MSI-H status was seen more frequently in distal tumors (P=0.04, odds ratio = 3.13, 0.96–10.14. Conclusions. Distal tumor location and MSI may associate with special clinicopathological features. It seems that there may be correlation with underlying genetic and immunologic mechanisms.

  3. Computer extracted texture features on T2w MRI to predict biochemical recurrence following radiation therapy for prostate cancer

    Science.gov (United States)

    Ginsburg, Shoshana B.; Rusu, Mirabela; Kurhanewicz, John; Madabhushi, Anant

    2014-03-01

    In this study we explore the ability of a novel machine learning approach, in conjunction with computer-extracted features describing prostate cancer morphology on pre-treatment MRI, to predict whether a patient will develop biochemical recurrence within ten years of radiation therapy. Biochemical recurrence, which is characterized by a rise in serum prostate-specific antigen (PSA) of at least 2 ng/mL above the nadir PSA, is associated with increased risk of metastasis and prostate cancer-related mortality. Currently, risk of biochemical recurrence is predicted by the Kattan nomogram, which incorporates several clinical factors to predict the probability of recurrence-free survival following radiation therapy (but has limited prediction accuracy). Semantic attributes on T2w MRI, such as the presence of extracapsular extension and seminal vesicle invasion and surrogate measure- ments of tumor size, have also been shown to be predictive of biochemical recurrence risk. While the correlation between biochemical recurrence and factors like tumor stage, Gleason grade, and extracapsular spread are well- documented, it is less clear how to predict biochemical recurrence in the absence of extracapsular spread and for small tumors fully contained in the capsule. Computer{extracted texture features, which quantitatively de- scribe tumor micro-architecture and morphology on MRI, have been shown to provide clues about a tumor's aggressiveness. However, while computer{extracted features have been employed for predicting cancer presence and grade, they have not been evaluated in the context of predicting risk of biochemical recurrence. This work seeks to evaluate the role of computer-extracted texture features in predicting risk of biochemical recurrence on a cohort of sixteen patients who underwent pre{treatment 1.5 Tesla (T) T2w MRI. We extract a combination of first-order statistical, gradient, co-occurrence, and Gabor wavelet features from T2w MRI. To identify which of these

  4. Texture features on T2-weighted magnetic resonance imaging: new potential biomarkers for prostate cancer aggressiveness

    Science.gov (United States)

    Vignati, A.; Mazzetti, S.; Giannini, V.; Russo, F.; Bollito, E.; Porpiglia, F.; Stasi, M.; Regge, D.

    2015-04-01

    To explore contrast (C) and homogeneity (H) gray-level co-occurrence matrix texture features on T2-weighted (T2w) Magnetic Resonance (MR) images and apparent diffusion coefficient (ADC) maps for predicting prostate cancer (PCa) aggressiveness, and to compare them with traditional ADC metrics for differentiating low- from intermediate/high-grade PCas. The local Ethics Committee approved this prospective study of 93 patients (median age, 65 years), who underwent 1.5 T multiparametric endorectal MR imaging before prostatectomy. Clinically significant (volume ≥0.5 ml) peripheral tumours were outlined on histological sections, contoured on T2w and ADC images, and their pathological Gleason Score (pGS) was recorded. C, H, and traditional ADC metrics (mean, median, 10th and 25th percentile) were calculated on the largest lesion slice, and correlated with the pGS through the Spearman correlation coefficient. The area under the receiver operating characteristic curve (AUC) assessed how parameters differentiate pGS = 6 from pGS ≥ 7. The dataset included 49 clinically significant PCas with a balanced distribution of pGS. The Spearman ρ and AUC values on ADC were: -0.489, 0.823 (mean) -0.522, 0.821 (median) -0.569, 0.854 (10th percentile) -0.556, 0.854 (25th percentile) -0.386, 0.871 (C); 0.533, 0.923 (H); while on T2w they were: -0.654, 0.945 (C); 0.645, 0.962 (H). AUC of H on ADC and T2w, and C on T2w were significantly higher than that of the mean ADC (p = 0.05). H and C calculated on T2w images outperform ADC parameters in correlating with pGS and differentiating low- from intermediate/high-risk PCas, supporting the role of T2w MR imaging in assessing PCa biological aggressiveness.

  5. Molecular Features and Methylation Status in Early Onset (≤40 Years Colorectal Cancer: A Population Based, Case-Control Study

    Directory of Open Access Journals (Sweden)

    Giulia Magnani

    2015-01-01

    Full Text Available Colorectal cancer is usually considered a disease of the elderly. However, a small fraction of patients develops colorectal cancer earlier. The aim of our study was to define the frequency of known hereditary colorectal syndromes and to characterise genetic and epigenetic features of early nonhereditary tumors. Thirty-three patients ≤40 years with diagnosis of colorectal cancer and 41 patients with disease at >60 years of age were investigated for MSI, Mismatch Repair proteins expression, KRAS and BRAF mutations, hypermethylation, and LINE-1 hypomethylation. Detection of germline mutations was performed in Mismatch Repair, APC and MUTYH genes. Early onset colorectal cancer showed a high incidence of hereditary forms (18%. KRAS mutations were detected in 36% of early nonhereditary tumors. Early onset colorectal cancer disclosed an average number of methylated genes significantly lower when compared to the controls (p=0.02. Finally both of the two groups were highly methylated in ESR1, GATA5, and WT1 genes and were similar for LINE-1 hypomethylation. The genetic make-up of carcinomas differs from young to elderly patients. Early onset tumors showed more frequently a constitutional defective of Mismatch Repair System and a minor number of methylated genes. Hypermethylation of ESR1, GATA5, and WT1 genes suggests possible markers in the earlier diagnosis of colorectal tumorigenesis.

  6. Molecular Features and Methylation Status in Early Onset (≤40 Years) Colorectal Cancer: A Population Based, Case-Control Study

    Science.gov (United States)

    Magnani, Giulia; Furlan, Daniela; Sahnane, Nora; Reggiani Bonetti, Luca; Domati, Federica; Pedroni, Monica

    2015-01-01

    Colorectal cancer is usually considered a disease of the elderly. However, a small fraction of patients develops colorectal cancer earlier. The aim of our study was to define the frequency of known hereditary colorectal syndromes and to characterise genetic and epigenetic features of early nonhereditary tumors. Thirty-three patients ≤40 years with diagnosis of colorectal cancer and 41 patients with disease at >60 years of age were investigated for MSI, Mismatch Repair proteins expression, KRAS and BRAF mutations, hypermethylation, and LINE-1 hypomethylation. Detection of germline mutations was performed in Mismatch Repair, APC and MUTYH genes. Early onset colorectal cancer showed a high incidence of hereditary forms (18%). KRAS mutations were detected in 36% of early nonhereditary tumors. Early onset colorectal cancer disclosed an average number of methylated genes significantly lower when compared to the controls (p = 0.02). Finally both of the two groups were highly methylated in ESR1, GATA5, and WT1 genes and were similar for LINE-1 hypomethylation. The genetic make-up of carcinomas differs from young to elderly patients. Early onset tumors showed more frequently a constitutional defective of Mismatch Repair System and a minor number of methylated genes. Hypermethylation of ESR1, GATA5, and WT1 genes suggests possible markers in the earlier diagnosis of colorectal tumorigenesis. PMID:26557847

  7. Can radiomics features be reproducibly measured from CBCT images for patients with non-small cell lung cancer?

    Energy Technology Data Exchange (ETDEWEB)

    Fave, Xenia, E-mail: xjfave@mdanderson.org; Fried, David [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030 and The University of Texas Graduate School of Biomedical Sciences at Houston, 6767 Bertner Avenue, Houston, Texas 77030 (United States); Mackin, Dennis; Yang, Jinzhong; Zhang, Joy; Balter, Peter; Followill, David [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030 (United States); Gomez, Daniel [Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030 (United States); Kyle Jones, A. [Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030 (United States); Stingo, Francesco [Department of Biostatistics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030 (United States); Fontenot, Jonas [Mary Bird Perkins Cancer Center, 4950 Essen Lane, Baton Rouge, Louisiana 70809 (United States); Court, Laurence [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030 and Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030 (United States)

    2015-12-15

    Purpose: Increasing evidence suggests radiomics features extracted from computed tomography (CT) images may be useful in prognostic models for patients with nonsmall cell lung cancer (NSCLC). This study was designed to determine whether such features can be reproducibly obtained from cone-beam CT (CBCT) images taken using medical Linac onboard-imaging systems in order to track them through treatment. Methods: Test-retest CBCT images of ten patients previously enrolled in a clinical trial were retrospectively obtained and used to determine the concordance correlation coefficient (CCC) for 68 different texture features. The volume dependence of each feature was also measured using the Spearman rank correlation coefficient. Features with a high reproducibility (CCC > 0.9) that were not due to volume dependence in the patient test-retest set were further examined for their sensitivity to differences in imaging protocol, level of scatter, and amount of motion by using two phantoms. The first phantom was a texture phantom composed of rectangular cartridges to represent different textures. Features were measured from two cartridges, shredded rubber and dense cork, in this study. The texture phantom was scanned with 19 different CBCT imagers to establish the features’ interscanner variability. The effect of scatter on these features was studied by surrounding the same texture phantom with scattering material (rice and solid water). The effect of respiratory motion on these features was studied using a dynamic-motion thoracic phantom and a specially designed tumor texture insert of the shredded rubber material. The differences between scans acquired with different Linacs and protocols, varying amounts of scatter, and with different levels of motion were compared to the mean intrapatient difference from the test-retest image set. Results: Of the original 68 features, 37 had a CCC >0.9 that was not due to volume dependence. When the Linac manufacturer and imaging protocol

  8. Design and Analysis of Breast Cancer Detection System Using Mammogram Features Extraction

    Directory of Open Access Journals (Sweden)

    Satish Saini

    2014-12-01

    Full Text Available Breast cancer is the most frequently diagnosed among women. Mammogram is a radiograph of the breast tissue and is one of the most effective, non-invasive methods of detecting breast cancer in its earliest and most treatable stage This paper aims at designing a breast cancer detection system based on Artificial Neural Network (ANN and Image Processing Techniques in digital mammography. The effectiveness of the ANN based detection system will be investigated for different number of layers and optimum number of layers will be chosen. The performance of the system will be analyzed on the basis of Mean Square Error (MSE.

  9. Relationship Between Blood Fibrinogen Concentration and Pathological Features of Cancer Patients: A 139-case Clinical Study

    Directory of Open Access Journals (Sweden)

    Da-Yong Lu

    2007-01-01

    Full Text Available Angiogenesis and coagulation are among the most consistent host responses to the presence of a malignant tissue. Pathological angiogenesis and coagulation are often occurred in patients with solid tumors, especially in the occurrence of neoplasm metastasis and as targets for anti-metastatic drugs such as antiangiogenesis agents, coagulation-mediated agents and anticancer drugs. Since fibrinogen (Fib is the most abundant and key haemostatic protein taking part in angiogenesis and coagulation, its biological and pathophysiological roles in cancer patients are intriguing. To continue foundational and translational research on Fib-related cancer pathogenesis, a phase II survey of 139 patients was carried out at the Central Hospital of Jing-An district and Shanghai University, Shanghai, China. The mean BFC of the cancer patients in this survey was overall about 35-50% greater than that in the normal population. This study showed that the mean BFC was higher in patients with long-distance metastases (N1M1 patients than in patients with no sign of long-distance metastases (N0M0 patients. Mean BFCs were 4.42 g/L (n= 21 in patients with lung cancer, 4.36 g/L, and in patients with hepatic cancer (n=5, and 4.63 g/L in patients with stomach cancer (n=8, all higher than the average value of the cancer patients overall (4.16 g/L. However, patients with bowel and colon cancers 3.79 g/L (n=16 showed lower than them. BFC levels increased with increasing cancer duration (latency > 1 year. There was a slight decrease in BFC after one or two treatment cycles, but a more marked decrease after surgery. We propose that the BFC level in cancer patients may be influenced by and related to many aspects of cancer progression such as metastatic conditions, tumor origins, patient’s pathological stage and disease latency. As an important first-hand pathologic-therapeutics relationship study, it provides evidence for the potentiality of a new approach of Fib-targeted as

  10. Unsupervised Skin cancer detection by combination of texture and shape features in dermoscopy images

    Directory of Open Access Journals (Sweden)

    Hamed aghapanah rudsari

    2014-05-01

    Full Text Available In this paper a novel unsupervised feature extraction method for detection of melanoma in skin images is presented. First of all, normal skin surrounding the lesion is removed in a segmentation process. In the next step, some shape and texture features are extracted from the output image of the first step: GLCM, GLRLM, the proposed directional-frequency features, and some parameters of Ripplet transform are used as texture features; Also, NRL features and Zernike moments are used as shape features. Totally, 63 texture features and 31 shape features are extracted. Finally, the number of extracted features is reduced using PCA method and a proposed method based on Fisher criteria. Extracted features are classified using the Perceptron Neural Networks, Support Vector Machine, 4-NN, and Naïve Bayes. The results show that SVM has the best performance. The proposed algorithm is applied on a database that consists of 160 labeled images. The overall results confirm the superiority of the proposed method in both accuracy and reliability over previous works.

  11. Curcumin effectively inhibits oncogenic NF-kB signaling and restrains stemness features in liver cancer

    DEFF Research Database (Denmark)

    Marquardt, Jens U; Gomez-Quiroz, Luis; Arreguin Camacho, Lucrecia O;

    2015-01-01

    BACKGROUND & AIMS: The cancer stem cells (CSCs) have important therapeutic implications for multi-resistant cancers including hepatocellular carcinoma (HCC). Among the key pathways frequently activated in liver CSCs is NF-kB signaling. METHODS: We evaluated the CSCs-depleting potential of NF......-kB inhibition in liver cancer achieved by the IKK inhibitor curcumin, RNAi and specific peptide SN50. The effects on CSCs were assessed by analysis of Side Population (SP), sphere formation and tumorigenicity. Molecular changes were determined by RT-qPCR, global gene expression microarray, EMSA, and Western...... inhibition of NF-kB and HDAC signaling for treatment of liver cancer patients with poor prognosis....

  12. A comprehensive sensitivity analysis of microarray breast cancer classification under feature variability

    NARCIS (Netherlands)

    H.M.J. Sontrop; P.D. Moerland; R. van den Ham; M.J.T. Reinders; W.F.J. Verhaegh

    2009-01-01

    Background: Large discrepancies in signature composition and outcome concordance have been observed between different microarray breast cancer expression profiling studies. This is often ascribed to differences in array platform as well as biological variability. We conjecture that other reasons for

  13. Endoscopic features predictive of gastric cancer in superficial lesions with biopsy-proven high grade intraepithelial neoplasia

    Institute of Scientific and Technical Information of China (English)

    Wei Wu; Yun-Lin Wu; Yan-Bo Zhu; Qing Wei; Yan Guo; Zheng-Gang Zhu; Yao-Zong Yuan

    2009-01-01

    AIM: To investigate the macroscopic and clinicopathologic features of gastric cancer in patients with biopsy-suggested high grade intraepithelial neoplasia.METHODS: Patients with biopsy-confirmed gastric high grade intraepithelial neoplasia were reviewed from January 2001 to March 2008. Pathologic sections were re-evaluated by two senior pathologists.Patients with an en-bloc resection of the lesion within two months after the diagnosis of high grade intraepithelial neoplasia were enrolled in the study.Clinical manifestations, endoscopic features, biopsy and surgical pathology of all patients were collected and analyzed. The data acquired were subjected to univariate and multivariate analysis.RESULTS: Seventy-two superficial gastric lesions with a pathologic diagnosis of high grade intraepithelial neoplasia based on biopsy specimens were enrolled.True high grade intraepithelial neoplasia was finally proved in 16 lesions and gastric cancer in the rest 56 lesions, most of which (96.4%) were differentiated carcinomas. The result of univariate analysis indicated that the size and the presence of marked ulcer plaque or scar in a superficial lesion were independently associated with gastric cancer ( P < 0.05), when high grade intraepithelial neoplasia was diagnosed by biopsy pathology. The results of multivariate analysis revealed the size greater than 1.5 cm [odds ratio (OR) 18.400,P < 0.001] and the presence of 5-odd mm ulcer plaque or scar (OR 10.000, P = 0.044) were associated with gastric cancer. Accordingly, the sensitivity, specificity and negative predictive value of multivariate analysis for predicting"true high grade intraepithelial neoplasia"was 87.5%, 89.3% and 96.2%, respectively.CONCLUSION: Macroscopic findings are of value in differentiation between high grade intraepithelial neoplasia and superficial gastric cancer. This may simplify patient work-up and save costs for patients and healthcare system.

  14. Heterogeneity of triple-negative breast cancer: mammographic, US, and MR imaging features according to androgen receptor expression

    Energy Technology Data Exchange (ETDEWEB)

    Bae, Min Sun; Song, Sung Eun; Kim, Won Hwa; Lee, Su Hyun; Moon, Woo Kyung [Seoul National University College of Medicine, Department of Radiology, Seoul (Korea, Republic of); Park, So Yeon; Park, In-Ae [Seoul National University College of Medicine, Department of Pathology, Seoul (Korea, Republic of); Han, Wonshik; Noh, Dong-Young [Seoul National University College of Medicine, Department of Surgery, Seoul (Korea, Republic of)

    2014-09-16

    Our aim was to determine whether triple-negative breast cancers (TNBCs) with and without androgen receptor (AR) expression have distinguishing imaging features on mammography, breast ultrasound (US), and magnetic resonance (MR) imaging. AR expression was assessed immunohistochemically in 125 patients with TNBC from a consecutive series of 1,086 operable invasive breast cancers. Two experienced radiologists blinded to clinicopathological findings reviewed all imaging studies in consensus using the BI-RADS lexicon. The imaging and pathological features of 33 AR-positive TNBCs were compared with those of 92 AR-negative TNBCs. The presence of mammographic calcifications with or without a mass (p < 0.001), non-mass enhancement on MR imaging (p < 0.001), and masses with irregular shape or spiculated margins on US (p < 0.001 and p = 0.002) and MR imaging (p = 0.001 and p < 0.001) were significantly associated with AR-positive TNBC. Compared with AR-negative TNBC, AR-positive TNBC was more likely to have a ductal carcinoma in situ component (59.8 % vs. 90.9 %, p = 0.001) and low Ki-67 expression (30.4 % vs. 51.5 %, p = 0.030). AR-positive and AR-negative TNBCs have different imaging features, and certain imaging findings can be useful to predict AR status in TNBC. (orig.)

  15. Clinical and genetic features of International Collaborative Group-hereditary nonpolyposis colorectal cancer families and suspected hereditary nonpolyposis colorectal cancer families

    Institute of Scientific and Technical Information of China (English)

    袁瑛; 叶俊; 郑树

    2004-01-01

    Background Hereditary nonpolyposis colorectal cancer (HNPPC) is one of the most common genetic syndrome related with mutation of human mismatch repair genes. This study was to evaluate the clinical significance of suspected hereditary nonpolyposis colorectal cancer (sHNPCC) criteria I and the clinical and genetic features of International Collaborative Group-HNPCC (ICG-HNPCC) and sHNPCC families.Methods Twenty-nine ICG-HNPCC families fulfilling the Amsterdam criteria and 34 sHNPCC families fulfilling the sHNPCC criteria I were collected. PCR-SSCP and DNA sequencing analysis were employed to screen the germline mutations of the hMLH1 and hMSH2 genes in these families.Results The ICG group had more colorectal cancer (CRC) patients per family than did the suspected group (P0.05), mutation type, and mutation distribution. Comparison of the families with and without mutation showed no significant difference in CRC patients per family, Lynch classification, and tumor spectrum.Conclusions ICG-HNPCC and sHNPCC families that have similar clinical manifestations and genetic basis indicate a similar nature for cancer development. The application of sHNPCC criteria I will facilitate clinical diagnosis and treatment of small families.

  16. Hereditary non-polyposis colorectal cancer: clinical features and survival. Results from the Danish HNPCC register

    DEFF Research Database (Denmark)

    Myrhøj, T; Bisgaard, M L; Bernstein, Inge Thomsen;

    1997-01-01

    were compared with 870 patients with sporadic colorectal cancer. RESULTS: The median age at CRC diagnosis was 41 years in the HNPCC group. HNPCC patients had significantly more carcinomas located to the right colon (68% against 49% in controls), more synchromous tumours (7% versus 1%), more...

  17. Identification of Tumor Suppressors and Oncogenes from Genomic and Epigenetic Features in Ovarian Cancer

    NARCIS (Netherlands)

    Wrzeszczynski, K.O.; Varadan, V.; Byrnes, J.; Lum, E.; Kamalakaran, S.; Levine, D.A.; Dimitrova, N.; Zhang, M.Q.; Lucito, R.

    2011-01-01

    The identification of genetic and epigenetic alterations from primary tumor cells has become a common method to identify genes criticalto the development and progression of cancer. We seek to identify those genetic and epigenetic aberrations that have the most impact ongene function within the tumor

  18. Investigation of Endoscopic and Pathologic Features for Safe Endoscopic Treatment of Superficial Spreading Early Gastric Cancer.

    Science.gov (United States)

    Lee, Kyong Joo; Pak, Kyung Ho; Hyung, Woo Jin; Noh, Sung Hoon; Kim, Choong Bai; Lee, Yong Chan; Kim, Hee Man; Lee, Sang Kil

    2016-04-01

    Superficial spreading early gastric cancer (EGC) is a rare disease that is treated mainly by surgery. There are few studies on the safety of endoscopic treatment for patients with superficial spreading EGC. The aims of this study were to (1) investigate the risk of lymph node metastasis of superficial spreading EGC and (2) investigate the potential criteria for endoscopic treatment of superficial spreading EGC using surgical specimens.Between 2000 and 2010, patients who received curative surgery of R0 resection at Severance Hospital (Seoul, Korea) for early gastric cancer were enrolled. The superficial spreading EGC was defined as cancer in which the longest tumor length was ≥6 cm. The medical records of the patients were reviewed retrospectively.Of the 3813 patients with EGC, 140 (3.7%) had lesions ≥ 6 cm, whereas 3673 (96.3%) had lesions EGC had higher rates of submucosal cancer (59.3% vs 45.7%, P = 0.002), lymphovascular invasion (18.6% vs 9.8%, P EGC (EGC, as compared with a tumor EGC. In mucosal cancer without ulcers, tumors ≥ 6 cm had a higher rate of lymph node metastasis than tumors ≤ 2 cm; however, this trend was not significant (7.7% vs 5.3%, P = 0.455).Superficial spreading EGC was not associated with an increased risk of lymph node metastasis compared with common EGC. We suggest that differentiated intramucosal superficial spreading EGC without ulceration can be treated by endoscopic submucosal dissection. PMID:27057862

  19. Identifying Significant Features in Cancer Methylation Data Using Gene Pathway Segmentation.

    Science.gov (United States)

    Hira, Zena M; Gillies, Duncan F

    2016-01-01

    In order to provide the most effective therapy for cancer, it is important to be able to diagnose whether a patient's cancer will respond to a proposed treatment. Methylation profiling could contain information from which such predictions could be made. Currently, hypothesis testing is used to determine whether possible biomarkers for cancer progression produce statistically significant results. However, this approach requires the identification of individual genes, or sets of genes, as candidate hypotheses, and with the increasing size of modern microarrays, this task is becoming progressively harder. Exhaustive testing of small sets of genes is computationally infeasible, and so hypothesis generation depends either on the use of established biological knowledge or on heuristic methods. As an alternative machine learning, methods can be used to identify groups of genes that are acting together within sets of cancer data and associate their behaviors with cancer progression. These methods have the advantage of being multivariate and unbiased but unfortunately also rapidly become computationally infeasible as the number of gene probes and datasets increases. To address this problem, we have investigated a way of utilizing prior knowledge to segment microarray datasets in such a way that machine learning can be used to identify candidate sets of genes for hypothesis testing. A methylation dataset is divided into subsets, where each subset contains only the probes that relate to a known gene pathway. Each of these pathway subsets is used independently for classification. The classification method is AdaBoost with decision trees as weak classifiers. Since each pathway subset contains a relatively small number of gene probes, it is possible to train and test its classification accuracy quickly and determine whether it has valuable diagnostic information. Finally, genes from successful pathway subsets can be combined to create a classifier of high accuracy. PMID:27688706

  20. Conserved features of cancer cells define their sensitivity to HAMLET-induced death; c-Myc and glycolysis.

    Science.gov (United States)

    Storm, P; Aits, S; Puthia, M K; Urbano, A; Northen, T; Powers, S; Bowen, B; Chao, Y; Reindl, W; Lee, D Y; Sullivan, N L; Zhang, J; Trulsson, M; Yang, H; Watson, J D; Svanborg, C

    2011-12-01

    HAMLET is the first member of a new family of tumoricidal protein-lipid complexes that kill cancer cells broadly, while sparing healthy, differentiated cells. Many and diverse tumor cell types are sensitive to the lethal effect, suggesting that HAMLET identifies and activates conserved death pathways in cancer cells. Here, we investigated the molecular basis for the difference in sensitivity between cancer cells and healthy cells. Using a combination of small-hairpin RNA (shRNA) inhibition, proteomic and metabolomic technology, we identified the c-Myc oncogene as one essential determinant of HAMLET sensitivity. Increased c-Myc expression levels promoted sensitivity to HAMLET and shRNA knockdown of c-Myc suppressed the lethal response, suggesting that oncogenic transformation with c-Myc creates a HAMLET-sensitive phenotype. Furthermore, HAMLET sensitivity was modified by the glycolytic state of tumor cells. Glucose deprivation sensitized tumor cells to HAMLET-induced cell death and in the shRNA screen, hexokinase 1 (HK1), 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 1 and hypoxia-inducible factor 1α modified HAMLET sensitivity. HK1 was shown to bind HAMLET in a protein array containing ∼8000 targets, and HK activity decreased within 15 min of HAMLET treatment, before morphological signs of tumor cell death. In parallel, HAMLET triggered rapid metabolic paralysis in carcinoma cells. Tumor cells were also shown to contain large amounts of oleic acid and its derivatives already after 15 min. The results identify HAMLET as a novel anti-cancer agent that kills tumor cells by exploiting unifying features of cancer cells such as oncogene addiction or the Warburg effect.

  1. Clinical manifestations and radiological features may contribute to the early diagnosis of radiation-induced sarcoma after breast cancer

    International Nuclear Information System (INIS)

    Aim: To describe the clinical manifestations and radiological features contributing to the early diagnosis of radiation-induced sarcoma (RIS) after radiotherapy for breast cancer. Materials and methods: This retrospective analysis included four typical cases of RIS diagnosed at Affiliated Hospital of Academy of Military Medical Sciences between 1980 and 2013. Patient and imaging characteristics, treatment modalities, and outcomes were extracted from patients' medical records. Two pathologists reviewed all histological slides. Results: All four cases were misdiagnosed and treated for several months as cases of breast cancer relapse. CT using the bone-window setting and three-dimensional reconstructions clearly displayed bone tumours of RIS in three cases. Skin alterations were observed in all cases. At the time of RIS diagnosis, three patients were free of breast cancer. In one patient with bilateral breast cancer and lung metastasis, chemotherapy resulted in complete remission of the metastasis, but RIS progression. No RIS in this series responded to chemotherapy or endocrine therapy. Conclusions: Abnormalities appearing in the radiation field long after RT should alert clinicians to the potential development of RIS. Careful physical examination and follow-up imaging studies are necessary. The presence of skin alterations, bone tumours at CT or radiography, and poor response to anti-cancer drugs may contribute to the early detection of RIS. Biopsy should be performed immediately when RIS is suspected. - Highlights: • Abnormalities in the radiation field should alert to the development of RIS. • Skin alterations and bone tumors on images may contribute to the early detection. • Biopsy should be performed immediately when Radiation-induced sarcoma is suspected

  2. A computerized global MR image feature analysis scheme to assist diagnosis of breast cancer: a preliminary assessment

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Qian [College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou, 310018 (China); Li, Lihua, E-mail: lilh@hdu.edu.cn [College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou, 310018 (China); Zhang, Juan; Shao, Guoliang [Zhejiang Cancer Hospital, Hangzhou, 310010 (China); Zheng, Bin [College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou, 310018 (China); School of Electrical and Computer Engineering, University of Oklahoma, Norman, OK 73019 (United States)

    2014-07-15

    Objectives: To develop a new computer-aided detection scheme to compute a global kinetic image feature from the dynamic contrast enhanced breast magnetic resonance imaging (DCE-MRI) and test the feasibility of using the computerized results for assisting classification between the DCE-MRI examinations associated with malignant and benign tumors. Materials and Methods: The scheme registers sequential images acquired from each DCE-MRI examination, segments breast areas on all images, searches for a fraction of voxels that have higher contrast enhancement values and computes an average contrast enhancement value of selected voxels. Combination of the maximum contrast enhancement values computed from two post-contrast series in one of two breasts is applied to predict the likelihood of the examination being positive for breast cancer. The scheme performance was evaluated when applying to a retrospectively collected database including 80 malignant and 50 benign cases. Results: In each of 91% of malignant cases and 66% of benign cases, the average contrast enhancement value computed from the top 0.43% of voxels is higher in the breast depicted suspicious lesions as compared to another negative (lesion-free) breast. In classifying between malignant and benign cases, using the computed image feature achieved an area under a receiver operating characteristic curve of 0.839 with 95% confidence interval of [0.762, 0.898]. Conclusions: We demonstrated that the global contrast enhancement feature of DCE-MRI can be relatively easily and robustly computed without accurate breast tumor detection and segmentation. This global feature provides supplementary information and a higher discriminatory power in assisting diagnosis of breast cancer.

  3. Mass screening of prostate cancer in a Chinese population:the relationship between pathological features of prostate cancer and serum prostate specific antigen

    Institute of Scientific and Technical Information of China (English)

    Hong-Wen Gao; Masaaki Kuwahara; Xue-Jian Zhao; Yu-Lin Li; Shan Wu; Yi-Shu Wang; Hai-Feng Zhang; Yu-Zhuo Pan; Ling Zhang; Hiroo Tateno; Ikuro Sato

    2005-01-01

    Aim: To investigate the pathological features of the prostate biopsy through mass screening for prostate cancer in a Chinese cohort and their association with serum prostate specific antigen (PSA). Methods: A total of 12 027 Chinese men in Changchun were screened for prostate cancer by means of the serum total prostate specific antigen (tPSA) test (oy Elisa assay). Transrectal ultrasound-guided systematic six-sextant biopsies were performed on those whose serum tPSA value was >4.0 ng/mL and those who had obstructive symptoms (despite their tPSA value) and were subject to subsequent pathological analysis with the aid of the statistic software SPSS 10.0 (SPSS. Inc., Chicago. USA). Results: Of the 12 027 cases, 158 (including 137 patients whose serum tPSA values were >4.0 ng/mL and 21 patients [serum tPSA <4.0 ng/mL] who had obstructive symptoms) undertook prostate biopsy. Of the 158 biopsies, 41 cases of prostatic carcinoma were found (25.9 %, 41/158). The moderately differentiated carcinoma and poorly differentiated carcinoma accounted for 61% and 34%, respectively. A significant linear positive correlation between the serum tPSA and the Gleason scores in the 41 cases of prostatic carcinoma (r = 0.312, P < 0.01) was established. A significant linear positive correlation between the serum tPSA value of the 41 prostatic carcinoma and the positive counts of carcinoma in sextant biopsies was established (r = 0.406, P < 0.01), indicating a significant linear relationship between serum tPSA and the size of tumor.Conclusion: This study was the first to conduct mass screening for prostate cancer by testing for serum tPSA values and the first to investigate the pathological features of prostate cancer in a cohort of Chinese men. Our results reveal that the moderately differentiated carcinoma is the most common type of prostate cancer. This study also has shown that the serum tPSA value in prostate cancer is associated with the Gleason score and the size of tumor.

  4. SPECIFIC FEATURES OF THE CURRENT DIAGNOSIS OF COLORECTAL CANCER LIVER METASTASES

    Directory of Open Access Journals (Sweden)

    T. Yu. Danzanova

    2013-01-01

    Full Text Available Development of an optimal algorithm of ray diagnostic examinations in the case of colorectal cancer liver metastases is extremely important. The paper reviews the literature on the diagnosis of colorectal cancer liver metastases. Diagnosis of liver metastases is based on imaging techniques that allow you to assess the condition of the liver, the number and size of lesions and the number of parameters on which the patient is suitable for radical surgery. Described ultrasound (US, computed tomography (CT and magnetic resonance imaging (MRI semiotics of liver metastases, and reflect additional information that can be obtained using beam methods of research, which is of great importance in determining resectability and preoperative planning of surgery. We consider differential diagnosis with benign tumors of the liver. The value and priority of such methods of radiation diagnosis as ultrasound with contrast, CT and MRI contrast agents, is widely debated among experts.

  5. Relationship between Full-Field Digital Mammographic Features and Clinicopathologic Characteristics in 176 Cases with Breast Cancer

    Institute of Scientific and Technical Information of China (English)

    Zhe Sun; Hongwei Liang; Huimian Xu

    2005-01-01

    OBJECTIVE Different mammographic features are probably predictive of different prognosis. However, ambiguity still exists in understanding the relationship between them. In resent years, digital mammography has been available for clinical use which has led to a revolution in the resolving of images and an increase in early-stage breast cancer detection.Based on the above knowledge, this study was performed to evaluate the relationship between full-field digital mammographic features and clinicopathologic characteristics in breast cancer.METHODS Digital mammograms of 176 patients with pathologically proven breast cancer were reviewed. Also, clinical and pathologic records (histological types and axillary lymph nodes status) were retrospectively examined.RESULTS Most of the patients with a solitary microcalcification were young women under the age of 50(84.4%), but the majority of the patients with microcalcifications complicated by a mass were elderly women. Microcalcifications detected by mammography occurred frequently in ductal carcinoma in situ (28.1%) and in early invasive carcinoma (15.6%). Breast cancers with expression of microcalcifications combined with a spiculate mass had a high metastatic rate of axillary lymph nodes (69.4%). A high metastatic rate of axillary lymph nodes was also found in the patients with solitary worm-like microcalcifications (57.1%), solitary spiculate mass (53.7%) and solitary non-worm-like microcalcifications (44.4%). Simple worm-like microcalcifications accompanied with metastasis of 4 to 9 axillary lymph nodes occurred in 42.9% of the(6/14) cases. The patients with microcalcifications combined by a spiculate mass and with metastasis of 4 to 9 axillary lymph nodes accounted for 27.8% (10/36) of the cases,and those with metastases of 10 and over accounted for 16.7% (6/36).CONCLUSION Solitary microcalcifications occur frequently in young women and are usually associated with early breast cancer. There is a close relationship

  6. The clinical study for features of liver metastasis of breast cancer on imaging and its response to arterial infusion chemotherapy

    International Nuclear Information System (INIS)

    Arterial infusion chemotherapy (FAMia) was performed in 35 patients with liver metastasis of breast cancer after radical mastectomy, which was suspected to be the limiting factor of the prognosis, and the relationship between the morphological types of liver metastases, percentage of the liver involved, their angiographic features, tumor makers and chemotherapeutic response was discussed. In most cases, metastatic lesions were detected as a hypoechoic area on US and as a low-density area on CT scan. On their angiographic features these lesions were revealed as hypervascular tumors in most cases and enlarged hepatic artery and obstruction of portal vein brunch were seen each in over 50 % of cases. In morphological type, diffuse small nodular patterns were seen in 54 % of cases. AL-P was the most sensitive indicator to detect the liver metastasis of beast cancer. FAMia were performed as one shot administration for 12 patients and as low-dose intermittent administration with implanted silicon reservoir for 23 patients. The regimen of low-dose intermittent administration was simultaneous using of 5-FU : 334 mg/sqm/W, MMC : 2.7 mg/sqm/2 W, ADM : 20 mg/sqm/4 W. In 26 evaluable cases, the response rate was 80.8 % (PR 21, NC 4, PD 1) and 50 % survival time was 14.0 months in responders and 2.0 months in non-responders. The case with under 40 % of the liver involved or with few large mass type revealed partial response. Arterial infusion chemotherapy was thus shown to be an effective treatment for liver metastasis of breast cancer, but that the response to the treatment differed for the percentage of the liver involved and each morphological type. (author)

  7. Histopathological features of breast tumours in BRCA1, BRCA2 and mutation-negative breast cancer families

    International Nuclear Information System (INIS)

    Histopathological features of BRCA1 and BRCA2 tumours have previously been characterised and compared with unselected breast tumours; however, familial non-BRCA1/2 tumours are less well known. The aim of this study was to characterise familial non-BRCA1/2 tumours and to evaluate routine immunohistochemical and pathological markers that could help us to further distinguish families carrying BRCA1/2 mutations from other breast cancer families. Breast cancer tissue specimens (n = 262) from 25 BRCA1, 20 BRCA2 and 74 non-BRCA1/2 families were studied on a tumour tissue microarray. Immunohistochemical staining of oestrogen receptor (ER), progesterone receptor (PgR) and p53 as well as the histology and grade of these three groups were compared with each other and with the respective information on 862 unselected control patients from the archives of the Pathology Department of Helsinki University Central Hospital. Immunohistochemical staining of erbB2 was also performed among familial cases. BRCA1-associated cancers were diagnosed younger and were more ER-negative and PgR-negative, p53-positive and of higher grade than the other tumours. However, in multivariate analysis the independent factors compared with non-BRCA1/2 tumours were age, grade and PgR negativity. BRCA2 cases did not have such distinctive features compared with non-BRCA1/2 tumours or with unselected control tumours. Familial cases without BRCA1/2 mutations had tumours of lower grade than the other groups. BRCA1 families differed from mutation-negative families by age, grade and PgR status, whereas ER status was not an independent marker

  8. Association between pretreatment Glasgow prognostic score and gastric cancer survival and clinicopathological features: a meta-analysis

    Directory of Open Access Journals (Sweden)

    Zhang CX

    2016-06-01

    Full Text Available Chun-Xiao Zhang,* Shu-Yi Wang,* Shuang-Qian Chen, Shuai-Long Yang, Lu Wan, Bin Xiong Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors and Hubei Cancer Clinical Study Center, Wuhan, Hubei, People’s Republic of China *These authors contributed equally to this work Background: Glasgow prognostic score (GPS is widely known as a systemic inflammatory-based marker. The relationship between pretreatment GPS and gastric cancer (GC survival and clinicopathological features remains controversial. The aim of the study was to conduct a meta-analysis of published studies to evaluate the association between pretreatment GPS and survival and clinicopathological features in GC patients. Methods: We searched PubMed, Embase, MEDLINE, and BioMed databases for relevant studies. Combined analyses were used to assess the association between pretreatment GPS and overall survival, disease-free survival, and clinicopathological parameters by Stata Version 12.0. Results: A total of 14 studies were included in this meta-analysis, including 5,579 GC patients. The results indicated that pretreatment high GPS (HGPS predicted poor overall survival (hazard ratio =1.51, 95% CI: 1.37–1.66, P<0.01 and disease-free survival (hazard ratio =1.45, 95% CI: 1.26–1.68, P<0.01 in GC patients. Pretreatment HGPS was also significantly associated with advanced tumor–node–metastasis stage (odds ratio [OR] =3.09, 95% CI: 2.11–4.53, P<0.01, lymph node metastasis (OR =4.60, 95% CI: 3.23–6.56, P<0.01, lymphatic invasion (OR =3.04, 95% CI: 2.00–4.62, P<0.01, and venous invasion (OR =3.56, 95% CI: 1.81–6.99, P<0.01. Conclusion: Our meta-analysis indicated that pretreatment HGPS could be a predicative factor of poor survival outcome and clinicopathological features for GC patients. Keywords: Glasgow prognostic score, gastric cancer, survival, clinicopathological feature

  9. TU-C-17A-10: Patient Features Based Dosimetric Pareto Front Prediction In Esophagus Cancer Radiotherapy

    Energy Technology Data Exchange (ETDEWEB)

    Wang, J; Zhao, K; Peng, J; Hu, W [Fudan University Shanghai Cancer Center, Shanghai, Shanghai (China); Jin, X [1st Affiliated Hospital of Wenzhou Medical College, Wenzhou (China)

    2014-06-15

    Purpose: The purpose of this study is to study the feasibility of the dosimetric pareto front (PF) prediction based on patient anatomic and dosimetric parameters for esophagus cancer patients. Methods: Sixty esophagus patients in our institution were enrolled in this study. A total 2920 IMRT plans were created to generated PF for each patient. On average, each patient had 48 plans. The anatomic and dosimetric features were extracted from those plans. The mean lung dose (MLD), mean heart dose (MHD), spinal cord max dose and PTV homogeneous index (PTVHI) were recorded for each plan. The principal component analysis (PCA) was used to extract overlap volume histogram (OVH) features between PTV and other critical organs. The full dataset was separated into two parts include the training dataset and the validation dataset. The prediction outcomes were the MHD and MLD for the current study. The spearman rank correlation coefficient was used to evaluate the correlation between the anatomical features and dosimetric features. The PF was fit by the the stepwise multiple regression method. The cross-validation method was used to evaluation the model. Results: The mean prediction error of the MHD was 465 cGy with 100 repetitions. The most correlated factors were the first principal components of the OVH between heart and PTV, and the overlap between heart and PTV in Z-axis. The mean prediction error of the MLD was 195 cGy. The most correlated factors were the first principal components of the OVH between lung and PTV, and the overlap between lung and PTV in Z-axis. Conclusion: It is feasible to use patients anatomic and dosimetric features to generate a predicted PF. Additional samples and further studies were required to get a better prediction model.

  10. Association between bilateral asymmetry of kinetic features computed from the DCE-MRI images and breast cancer

    Science.gov (United States)

    Yang, Qian; Li, Lihua; Zhang, Juan; Zhang, Chengjie; Zheng, Bin

    2013-03-01

    Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) of breast yields high sensitivity but relatively lower specificity. To improve diagnostic accuracy of DCE-MRI, we investigated the association between bilateral asymmetry of kinetic features computed from the left and right breasts and breast cancer detection with the hypothesis that due to the growth of angiogenesis associated with malignant lesions, the average dynamic contrast enhancement computed from the breasts depicting malignant lesions should be higher than negative or benign breasts. To test this hypothesis, we assembled a database involving 130 DCE-MRI examinations including 81 malignant and 49 benign cases. We developed a computerized scheme that automatically segments breast areas depicted on MR images and computes kinetic features related to the bilateral asymmetry of contrast enhancement ratio between two breasts. An artificial neural network (ANN) was then used to classify between malignant and benign cases. To identify the optimal approach to compute the bilateral kinetic feature asymmetry, we tested 4 different thresholds to select the enhanced pixels (voxels) from DCE-MRI images and compute the kinetic features. Using the optimal threshold, the ANN had a classification performance measured by the area under the ROC curve of AUC=0.79+/-0.04. The positive and negative predictive values were 0.75 and 0.67, respectively. The study suggested that the bilateral asymmetry of kinetic features or contrast enhancement of breast background tissue could provide valuable supplementary information to distinguish between the malignant and benign cases, which can be fused into existing computer-aided detection schemes to improve classification performance.

  11. Breast cancer mitosis detection in histopathological images with spatial feature extraction

    Science.gov (United States)

    Albayrak, Abdülkadir; Bilgin, Gökhan

    2013-12-01

    In this work, cellular mitosis detection in histopathological images has been investigated. Mitosis detection is very expensive and time consuming process. Development of digital imaging in pathology has enabled reasonable and effective solution to this problem. Segmentation of digital images provides easier analysis of cell structures in histopathological data. To differentiate normal and mitotic cells in histopathological images, feature extraction step is very crucial step for the system accuracy. A mitotic cell has more distinctive textural dissimilarities than the other normal cells. Hence, it is important to incorporate spatial information in feature extraction or in post-processing steps. As a main part of this study, Haralick texture descriptor has been proposed with different spatial window sizes in RGB and La*b* color spaces. So, spatial dependencies of normal and mitotic cellular pixels can be evaluated within different pixel neighborhoods. Extracted features are compared with various sample sizes by Support Vector Machines using k-fold cross validation method. According to the represented results, it has been shown that separation accuracy on mitotic and non-mitotic cellular pixels gets better with the increasing size of spatial window.

  12. CARM1 and PRMT1 are dysregulated in lung cancer without hierarchical features.

    Science.gov (United States)

    Elakoum, Rania; Gauchotte, Guillaume; Oussalah, Abderrahim; Wissler, Marie-Pierre; Clément-Duchêne, Christelle; Vignaud, Jean-Michel; Guéant, Jean-Louis; Namour, Farès

    2014-02-01

    CARM1 and PRMT1 are 2 Protein Arginine Methyl Transferases (PRMT) dysregulated in cancer. CARM1 function is contradictory and depicted as facilitating proliferation or differentiation. PRMT1 is required for cell proliferation. CARM1 and PRMT1 cooperate for gene regulation. We report that CARM1 and PRMT1 are significantly overexpressed in 60 patients with Non-Small Cell Lung Carcinomas (NSCLC). CARM1 and PRMT1 correlated in healthy but not tumor tissue. Their levels of expression in tumor tissue were proportional to their levels of expression in the counterpart healthy tissue. Only CARM1 expression was found to be correlated with tumor differentiation and neither CARM1 nor PRMT1 expression was correlated with survival. Accordingly, CARM1 and PRMT1 are overexpressed in 2 NSCLC cell lines, A549 and H1299. Targeting PRMT1 with siRNA reduced proliferation, by decreasing cell growth and inhibiting soft agar colony formation, and promoted differentiation, by increasing the epithelial markers cytokeratin 7 and 8 and decreasing Neuromedin B receptor, which binds a mitogenic factor. siCARM1 yielded similar consequences but the conditions with siCARM1 reflected inhibition of both CARM1 and PRMT1. Together these results suggest that CARM1 and PRMT1 are involved in proliferation in lung cancer with no hierarchy of one protein over the other. The fact that CARM1 targeting suppresses PRMT1 in addition to CARM1 reinforces the functional importance of CARM1/PRMT1 interaction. PMID:24211191

  13. Applying quantitative adiposity feature analysis models to predict benefit of bevacizumab-based chemotherapy in ovarian cancer patients

    Science.gov (United States)

    Wang, Yunzhi; Qiu, Yuchen; Thai, Theresa; More, Kathleen; Ding, Kai; Liu, Hong; Zheng, Bin

    2016-03-01

    How to rationally identify epithelial ovarian cancer (EOC) patients who will benefit from bevacizumab or other antiangiogenic therapies is a critical issue in EOC treatments. The motivation of this study is to quantitatively measure adiposity features from CT images and investigate the feasibility of predicting potential benefit of EOC patients with or without receiving bevacizumab-based chemotherapy treatment using multivariate statistical models built based on quantitative adiposity image features. A dataset involving CT images from 59 advanced EOC patients were included. Among them, 32 patients received maintenance bevacizumab after primary chemotherapy and the remaining 27 patients did not. We developed a computer-aided detection (CAD) scheme to automatically segment subcutaneous fat areas (VFA) and visceral fat areas (SFA) and then extracted 7 adiposity-related quantitative features. Three multivariate data analysis models (linear regression, logistic regression and Cox proportional hazards regression) were performed respectively to investigate the potential association between the model-generated prediction results and the patients' progression-free survival (PFS) and overall survival (OS). The results show that using all 3 statistical models, a statistically significant association was detected between the model-generated results and both of the two clinical outcomes in the group of patients receiving maintenance bevacizumab (pchemotherapy.

  14. Prognostic Value and Reproducibility of Pretreatment CT Texture Features in Stage III Non-Small Cell Lung Cancer

    Energy Technology Data Exchange (ETDEWEB)

    Fried, David V. [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston, Houston, Texas (United States); Tucker, Susan L. [Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Zhou, Shouhao [Division of Quantitative Sciences, Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Liao, Zhongxing [Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Mawlawi, Osama [Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston, Houston, Texas (United States); Ibbott, Geoffrey [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston, Houston, Texas (United States); Court, Laurence E., E-mail: LECourt@mdanderson.org [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston, Houston, Texas (United States)

    2014-11-15

    Purpose: To determine whether pretreatment CT texture features can improve patient risk stratification beyond conventional prognostic factors (CPFs) in stage III non-small cell lung cancer (NSCLC). Methods and Materials: We retrospectively reviewed 91 cases with stage III NSCLC treated with definitive chemoradiation therapy. All patients underwent pretreatment diagnostic contrast enhanced computed tomography (CE-CT) followed by 4-dimensional CT (4D-CT) for treatment simulation. We used the average-CT and expiratory (T50-CT) images from the 4D-CT along with the CE-CT for texture extraction. Histogram, gradient, co-occurrence, gray tone difference, and filtration-based techniques were used for texture feature extraction. Penalized Cox regression implementing cross-validation was used for covariate selection and modeling. Models incorporating texture features from the 33 image types and CPFs were compared to those with models incorporating CPFs alone for overall survival (OS), local-regional control (LRC), and freedom from distant metastases (FFDM). Predictive Kaplan-Meier curves were generated using leave-one-out cross-validation. Patients were stratified based on whether their predicted outcome was above or below the median. Reproducibility of texture features was evaluated using test-retest scans from independent patients and quantified using concordance correlation coefficients (CCC). We compared models incorporating the reproducibility seen on test-retest scans to our original models and determined the classification reproducibility. Results: Models incorporating both texture features and CPFs demonstrated a significant improvement in risk stratification compared to models using CPFs alone for OS (P=.046), LRC (P=.01), and FFDM (P=.005). The average CCCs were 0.89, 0.91, and 0.67 for texture features extracted from the average-CT, T50-CT, and CE-CT, respectively. Incorporating reproducibility within our models yielded 80.4% (±3.7% SD), 78.3% (±4.0% SD), and 78

  15. Hereditary/familial versus sporadic prostate cancer: few indisputable genetic differences and many similar clinicopathological features.

    Science.gov (United States)

    Alberti, C

    2010-01-01

    Genetic factors and their interactions with environmental conditions and internal microenvironment influence the prostate cancer (PC) development, so that gene expression couldn't strictly occur on the basis of reductionist determinisms of DNA causality but should also conform to multifactorial and stochastic events, moreover, considering the pre-RNA alternative splicing-mediated multi-protein assemblying mechanisms. Nevertheless, after age and ethnic background, the strongest epidemiological risk factor for PC is a positive family history. However, apart from RNaseL-, ElaC2-, MSR1-genes, there are not other identified high-risk genetic variants which might be considered responsible for hereditary PC, moreover suggesting that familial PC is a genetically heterogeneous disease, many gene loci rather than a specific major susceptibility gene predisposing to it. Gene-environment interactions play a crucial role in cancer development especially when low penetrance genes, such as in case of genetic polymorphisms, are the major players. Several epidemiological studies show, in some families, a possible, either syncronous or metachronous, association of other tumors (breast, brain, gastrointestinal tumors, lymphomas) with PC, thus suggesting a common genetic background. As far as the role of androgen metabolism and androgen receptor (AR)-related genes in the development of familial PC is concerned, a small number of either guanine-guanine-cytosine (risk. Regarding the expression of both androgen and estrogen receptor-related genes in sporadic and hereditary PC, the immunohistochemistry findings show that the percentage of AR-positive cancer cells is higher in hereditary PC than in sporadic forms, whereas the mean number of estrogen-alpha-receptor-positive stromal cells is higher in sporadic PC rather than in that hereditary. As for 5-alpha-steroid-reductase-2 gene, the dinucleotide thymine-adenine repeated 18 times on the last exon, confers an increased PC predisposition

  16. Detection of metabolic syndrome features among childhood cancer survivors: A target to prevent disease

    Directory of Open Access Journals (Sweden)

    Adriana Aparecida Siviero-Miachon

    2008-08-01

    Full Text Available Adriana Aparecida Siviero-Miachon1, Angela Maria Spinola-Castro1, Gil Guerra-Junior21Division of Pediatric Endocrinology, Department of Pediatrics, Federal University of Sao Paulo – UNIFESP/EPM, Brazil; 2Division of Pediatric Endocrinology, Department of Pediatrics, State University of Campinas – FCM/UNICAMP, BrazilAbstract: Along with the growing epidemic of obesity, the risk of atherosclerosis, cardiovascular disease morbidity, and mortality are increasing markedly. Several risk factors for cardiovascular disease, such as visceral obesity, glucose intolerance, arterial hypertension, and dyslipidemia commonly cluster together as a condition currently known as metabolic syndrome. Thus far, insulin resistance, and endothelial dysfunction are the primary events of the metabolic syndrome. Several groups have recommended clinical criteria for the diagnosis of metabolic syndrome in adults. Nonetheless, in what concerns children and adolescents, there are no unified definitions, and modified adult criteria have been suggested by many authors, despite major problems. Some pediatric disease states are at risk for premature cardiovascular disease, with clinical coronary events occurring very early in adult life. Survivors of specific pediatric cancer groups, particularly acute lymphocytic leukemia, central nervous system tumors, sarcomas, lymphomas, testicular cancer, and following bone marrow transplantation, may develop metabolic syndrome traits due to: hormonal deficiencies (growth hormone deficiency, thyroid dysfunction, and gonadal failure, drug or radiotherapy damage, endothelial impairment, physical inactivity, adipose tissue dysfunction, and/or drug-induced magnesium deficiency. In conclusion, some primary and secondary prevention remarks are proposed in order to reduce premature cardiovascular disease risk in this particular group of patients.Keywords: metabolic syndrome X, cardiovascular diseases, insulin resistance, obesity, growth hormone

  17. Characteristic spectral features of the polarized fluorescence of human breast cancer in the wavelet domain

    CERN Document Server

    Gharekhan, Anita H; Gupta, Sharad; Panigrahi, Prasanta K; Pradhan, Asima

    2012-01-01

    Wavelet transform of polarized fluorescence spectra of human breast tissues is found to localize spectral features that can reliably differentiate normal and malignant tissue types. The intensity differences of parallel and perpendicularly polarized fluorescence spectra are subjected to investigation, since the same is relatively free of the diffusive background. A number of parameters, capturing spectral variations and subtle changes in the diseased tissues in the visible wavelength regime, are clearly identifiable in the wavelet domain. These manifest both in the average low pass and high frequency high pass wavelet coefficients.

  18. Skin cancer texture analysis of OCT images based on Haralick, fractal dimension and the complex directional field features

    Science.gov (United States)

    Raupov, Dmitry S.; Myakinin, Oleg O.; Bratchenko, Ivan A.; Kornilin, Dmitry V.; Zakharov, Valery P.; Khramov, Alexander G.

    2016-04-01

    Optical coherence tomography (OCT) is usually employed for the measurement of tumor topology, which reflects structural changes of a tissue. We investigated the possibility of OCT in detecting changes using a computer texture analysis method based on Haralick texture features, fractal dimension and the complex directional field method from different tissues. These features were used to identify special spatial characteristics, which differ healthy tissue from various skin cancers in cross-section OCT images (B-scans). Speckle reduction is an important pre-processing stage for OCT image processing. In this paper, an interval type-II fuzzy anisotropic diffusion algorithm for speckle noise reduction in OCT images was used. The Haralick texture feature set includes contrast, correlation, energy, and homogeneity evaluated in different directions. A box-counting method is applied to compute fractal dimension of investigated tissues. Additionally, we used the complex directional field calculated by the local gradient methodology to increase of the assessment quality of the diagnosis method. The complex directional field (as well as the "classical" directional field) can help describe an image as set of directions. Considering to a fact that malignant tissue grows anisotropically, some principal grooves may be observed on dermoscopic images, which mean possible existence of principal directions on OCT images. Our results suggest that described texture features may provide useful information to differentiate pathological from healthy patients. The problem of recognition melanoma from nevi is decided in this work due to the big quantity of experimental data (143 OCT-images include tumors as Basal Cell Carcinoma (BCC), Malignant Melanoma (MM) and Nevi). We have sensitivity about 90% and specificity about 85%. Further research is warranted to determine how this approach may be used to select the regions of interest automatically.

  19. The features of kinetics of 153Sm-oksabifor in bone metastases of cancer of different localization

    International Nuclear Information System (INIS)

    Provide evaluation of investigation of kinetics of 153Sm-oksabifor in metastases of cancer the results of complex scintigraphic investigations of 26 patients who were treated by radionuclide therapy were analyzed. The angioscintigraphy during 60 seconds, dynamic scintigraphy during 60-90 minutes and whole body scanning after intravenous bolus injection of 4130-4950 MBq of the radiopharmaceutical in sequence were made. Considerable variability of indices of the radiopharmaceutical kinetics was determined. The features of angioscintigrams from bone metastases with intensive accumulation of the radiopharmaceutical are a short descending segment or its absents and passing an ascending segment into plateau or slowly ascending curve, which are determined the radiopharmaceutical fixation in metastases during first passing the bolus through the vessels. Character of the radiopharmaceutical fixation at angioscintigraphy may be a prognostic factor of the efficacy of radionuclide therapy

  20. Predicting Pathological Features at Radical Prostatectomy in Patients with Prostate Cancer Eligible for Active Surveillance by Multiparametric Magnetic Resonance Imaging.

    Directory of Open Access Journals (Sweden)

    Ottavio de Cobelli

    Full Text Available The aim of this study was to investigate the prognostic performance of multiparametric magnetic resonance imaging (mpMRI and Prostate Imaging Reporting and Data System (PIRADS score in predicting pathologic features in a cohort of patients eligible for active surveillance who underwent radical prostatectomy.A total of 223 patients who fulfilled the criteria for "Prostate Cancer Research International: Active Surveillance", were included. Mp-1.5 Tesla MRI examination staging with endorectal coil was performed at least 6-8 weeks after TRUS-guided biopsy. In all patients, the likelihood of the presence of cancer was assigned using PIRADS score between 1 and 5. Outcomes of interest were: Gleason score upgrading, extra capsular extension (ECE, unfavorable prognosis (occurrence of both upgrading and ECE, large tumor volume (≥ 0.5 ml, and seminal vesicle invasion (SVI. Receiver Operating Characteristic (ROC curves and Decision Curve Analyses (DCA were performed for models with and without inclusion of PIRADS score.Multivariate analysis demonstrated the association of PIRADS score with upgrading (P < 0.0001, ECE (P < 0.0001, unfavorable prognosis (P < 0.0001, and large tumor volume (P = 0.002. ROC curves and DCA showed that models including PIRADS score resulted in greater net benefit for almost all the outcomes of interest, with the only exception of SVI.mpMRI and PIRADS scoring are feasible tools in clinical setting and could be used as decision-support systems for a more accurate selection of patients eligible for AS.

  1. Mammographic features of screening detected pT1 (a–b) invasive breast cancer using BI-RADS lexicon

    International Nuclear Information System (INIS)

    Aim: To describe mammographic features in screening detected invasive breast cancer less than or equal to 10 mm using Breast Imaging Reporting and Data System lexicon in full-field digital mammography. Patients and methods: A retrospective analysis of 123 pT1 (a–b) invasive breast cancers in women aged 50–69 years from our screening program. Radiologic patterns were: masses, calcifications, distortions, asymmetries and mixed. Masses: shape, margins and density, and calcifications: morphology, number of flecks and size of the cluster were taken into account, following Breast Imaging Reporting and Data System terminology. Results: We found 61 masses (49.6%), 8 masses with calcifications (6.5%), 30 groups of calcifications (24.4%), 19 architectural distortions (15.4%), 1 architectural distortion with calcifications (0.8%), 4 asymmetries (3.2%). Sixty out of 69 masses were irregular in shape, 6 lobular, 2 ovals and 1 round. Thirty-four showed ill-defined margins, 29 spiculated and 6 microlobulated. Most of them showed a density similar to surrounding fibroglandular tissue. Calcifications were pleomorphic or fine linear in 24 of 30 (80%). Most of cases showed more than 10 flecks and a size greater than 1 cm. Conclusion: The predominant radiologic finding is an irregular, isodense mass those margins tend to share different descriptors, being ill-defined margins the most constant finding. Calcifications representing invasive cancer are predominantly pleomorphic with more than 10 flecks per cm. Architectural distortion and invasive tubular carcinoma are more common than reported in general series

  2. Apparent Diffusion Coefficient (ADC value: a potential imaging biomarker that reflects the biological features of rectal cancer.

    Directory of Open Access Journals (Sweden)

    Yiqun Sun

    Full Text Available OBJECTIVE: We elected to analyze the correlation between the pre-treatment apparent diffusion coefficient (ADC and the clinical, histological, and immunohistochemical status of rectal cancers. MATERIALS AND METHODS: Forty-nine rectal cancer patients who received surgical resection without neoadjuvant therapy were selected that underwent primary MRI and diffusion-weighted imaging (DWI. Tumor ADC values were determined and analyzed to identify any correlations between these values and pre-treatment CEA or CA19-9 levels, and/or the histological and immunohistochemical properties of the tumor. RESULTS: Inter-observer agreement of confidence levels from two separate observers was suitable for ADC measurement (k  =  0.775. The pre-treatment ADC values of different T stage tumors were not equal (p  =  0.003. The overall trend was that higher T stage values correlated with lower ADC values. ADC values were also significantly lower for the following conditions: tumors with the presence of extranodal tumor deposits (p  =  0.006 and tumors with CA19-9 levels ≥ 35 g/ml (p  =  0.006. There was a negative correlation between Ki-67 LI and the ADC value (r  =  -0.318, p  =  0.026 and between the AgNOR count and the ADC value (r  =  -0.310, p  =  0.030. CONCLUSION: Significant correlations were found between the pre-treatment ADC values and T stage, extranodal tumor deposits, CA19-9 levels, Ki-67 LI, and AgNOR counts in our study. Lower ADC values were associated with more aggressive tumor behavior. Therefore, the ADC value may represent a useful biomarker for assessing the biological features and possible relationship to the status of identified rectal cancers.

  3. Mammographic, sonographic and MR imaging features of invasive micropapillary breast cancer

    Energy Technology Data Exchange (ETDEWEB)

    Alsharif, Shaza; Daghistani, Razan; Kamberoğlu, Elif Aşik; Omeroglu, Atilla; Meterissian, Sarkis; Mesurolle, Benoît, E-mail: benoit.mesurolle@muhc.mcgill.ca

    2014-08-15

    Purpose: Describe mammographic, sonographic and MRI findings of invasive micropapillary carcinoma (IMPC) of the breast. Materials and methods: Review of the pathology database identified 43 patients (mean age, 59.3 years) with the diagnosis of breast IMPC. Three patients had no available imaging studies. Mammograms (40), breast ultrasounds (33) and MRIs (8) were retrospectively evaluated by two radiologists in consensus following the BI-RADS Lexicon. Clinical, histopathologic features, as well as hormone status were recorded. Results: Twenty patients presented with palpable abnormality (20/40, 50%). Thirty-five patients had an abnormal mammogram (87.5%, 35/40) showing 39 lesions, 29 corresponding to masses (29/39, 74.4%), 11 associated with microcalcifications and two associated with architectural distortion. Sonography identified 41 masses (in 33 patients) displaying an irregular shape (30/41, 73.2%), appearing hypoechoic (39/41, 95%), with spiculated or angular margins (26/41, 63.4%), non-parallel orientation (26/41, 63.4%) and combined acoustic posterior pattern (18/41, 44%). MRI identified 13 lesions (in eight patients), 12 as masses (12/13, 92.3%) with irregular or spiculated margins (12/12, 100%), eight displaying an irregular or lobulated shape (8/12, 66.7%), six with homogeneous internal enhancement (6/12, 50%) and eight with type 3 enhancement curve (8/12, 61.5%). Associated non-mass like enhancement was noted in two patients. Twenty-nine patients had associated lymphovascular invasion (29/40, 72.5%) and axillary lymph node metastases were present in 22 of the 39 patients (22/39, 56%). Conclusion: Invasive ductal carcinoma with IMPC features display imaging findings highly suspicious of malignant lesions. They are associated with high lymphovascular invasion and lymph node metastases rates.

  4. Association of computerized texture features on MRI with early treatment response following laser ablation for neuropathic cancer pain: preliminary findings.

    Science.gov (United States)

    Tiwari, Pallavi; Danish, Shabbar F; Jiang, Benjamin; Madabhushi, Anant

    2015-10-01

    was considered. Our quantitative approach first involved intensity standardization to allow for grayscale MR intensities acquired pre- and post-LITT to have a fixed tissue-specific meaning within the same imaging protocol, the same body region, and within the same patient. An affine registration was then performed on individual post-LITT MRI protocols to a reference MRI protocol pre-LITT. A total of 78 computerized texture features (co-occurrence matrix homogeneity, neighboring gray-level dependence matrix, Gabor) are then extracted from pre- and post-LITT MP-MRI on a per-voxel basis. Quantitative, voxelwise comparison of the changes in MRI texture features between pre- and post-LITT MRI indicate that (a) Gabor texture features at specific orientations were highly sensitive as well as specific in predicting subtle microarchitectural changes within and around the ablation zone pre- and post-LITT, (b) FLAIR was identified as the most sensitive MRI protocol in identifying early treatment changes yielding a normalized percentage change of 360% within the ablation zone relative to its pre-LITT value, and (c) GRE was identified as the most sensitive MRI protocol in quantifying changes outside the ablation zone post-LITT. Our preliminary results thus indicate potential for noninvasive computerized MP-MRI features over volumetric features in determining localized microarchitectural early focal treatment changes post-LITT for neuropathic cancer pain treatment. PMID:26870745

  5. Biological Features of Human Papillomavirus-related Head and Neck Cancers Contributing to Improved Response.

    Science.gov (United States)

    Cleary, C; Leeman, J E; Higginson, D S; Katabi, N; Sherman, E; Morris, L; McBride, S; Lee, N; Riaz, N

    2016-07-01

    Head and neck squamous cell carcinomas (HNSCC) are the sixth most common malignancy globally, and an increasing proportion of oropharyngeal HNSCCs are associated with the human papillomavirus (HPV). Patients with HPV-associated tumours have markedly improved overall and disease-specific survival compared with their HPV-negative counterparts when treated with chemoradiation. Although the difference in outcomes between these two groups is clearly established, the mechanism underlying these differences remains an area of investigation. Data from preclinical, clinical and genomics studies have started to suggest that an increase in radio-sensitivity of HPV-positive HNSCC may be responsible for improved outcomes, the putative mechanisms of which we will review here. The Cancer Genome Atlas and others have recently documented a multitude of molecular differences between HPV-positive and HPV-negative tumours. Preclinical investigations by multiple groups have explored possible mechanisms of increased sensitivity to therapy, including examining differences in DNA repair, hypoxia and the immune response. In addition to differences in the response to therapy, some groups have started to investigate phenotypic differences between the two diseases, such as tumour invasiveness. Finally, we will conclude with a brief review of ongoing clinical trials that are attempting to de-escalate treatment to minimise long-term toxicity while maintaining cure rates. New insights from preclinical and genomic studies may eventually lead to personalised treatment paradigms for HPV-positive patients. PMID:27052795

  6. Membranous glomerulonephritis: histological and serological features to differentiate cancer-related and non-related forms.

    Science.gov (United States)

    Murtas, Corrado; Ghiggeri, Gian Marco

    2016-08-01

    Membranous nephropathy is a frequent cause of nephrotic syndrome in adults. In most patients, it appears as a primary renal disease but in about 20 % of cases membranous nephropathy is associated with systemic conditions such as systemic lupus erythematosus, infections or cancer, or with drug exposure. Reliable differentiation between primary and secondary membranous nephropathy has important implications for the patient, because of different therapeutic approaches between the different forms. The recent in vivo definition of glomerular targets of autoimmunity in idiopathic membranous nephropathy represented a real breakthrough and nowadays more than one podocyte antigen is considered in some way implicated in the pathogenesis of human membranous nephropathy. Specific antibodies against all these components have been detected in serum of patients and could become biomarkers of membranous nephropathy and/or of disease activity. In this brief review, we discuss the usefulness of newly described autoantibodies in the differential diagnosis of secondary membranous nephropathy. Histological clues for recognizing the two pathological entities are also analysed with regard to the available scientific evidence on this issue. Our evaluation shows that more research is needed to identify the best approach to reach a correct diagnosis of primary or secondary membranous nephropathy. PMID:26810113

  7. The relationship between multiple clinicopatho­ logical features and nerve invasion in pancreatic cancer

    Institute of Scientific and Technical Information of China (English)

    Pao­Hsun Wang; Ning Song; Liu­Bin Shi

    2013-01-01

    BACKGROUND: Nerve  invasion  is  a  specific  type  of  tumor expansion and characteristic manifestation of pancreatic cancer (PC), with an incidence rate ranging from 50% to 100%. It is an  important  prognostic  factor  for  pancreatic  cancer,  and  its early  detection  is  helpful  in  the  management  of  the  disease. This  study  was  undertaken  to  analyze  retrospectively  the relationship  between  neural  invasion  and  multiple  clinico­ pathological features and to provide evidences for clinicians in the management of neural invasion in patients with PC. METHODS: Formalin­fixed  paraffin­embeded  specimens  of PC  taken  from  215  patients  were  examined  for  the  presence of  neural  invasion  under  a  light  microscope.  Analyzed  was the relationship between neural invasion and multiple clinico­ pathological feature including preoperative fasting blood glucose level, amylase level, serum CA19­9 level, abdominal pain, lumbar and back pain, and the expressions of p53 and Ki67 in tumor tissues. RESULTS: Preoperative  fasting  blood  glucose  level,  serum CA19­9 level and p53 positive cells in cancer tissue were increased with the rise of pathological grade (P CONCLUSIONS: Our  data  indicated  that  the  preoperative fasting  blood  glucose  level,  serum  CA19­9  level,  and  referred pain are novel predictive markers for neural invasion in patients with PC. p53 and Ki67 play important roles in neural invasion of PC. Management of hyperglycemia may serve as an auxiliary treatment to curb neural invasion in PC.

  8. Features of fatigue in patients with early-stage non-small cell lung cancer

    Directory of Open Access Journals (Sweden)

    Xianping Huang

    2015-01-01

    Full Text Available Background: The objective of this study was to investigate the fatigue status and related factors in patients with early-stage non-small cell lung cancer (NSCLC 1-5 years after surgery. Materials and Methods: This cross-sectional study included 254 patients with stage IA or IB NSCLC, who had undergone surgery. They completed several surveys, including the Brief Fatigue Inventory, Karnofsky Performance Scale, Physical Activity Questionnaire, Baseline Dyspnea Index, Hospital Anxiety and Depression Scale. The association between fatigue and functional status was assessed using Chi-square analysis. Spearman rank correlation and multivariate logistic regression analysis were used to assess the correlation between fatigue and various other factors. Results: The overall incidence of postoperative fatigue was 59.8%. Among patients with moderate to severe fatigue, 21.1% had obvious dysfunction, whereas only 9.6% of patients with mild or no fatigue (χ2 = 5.369; P = 0.02 showed obvious dysfunction. Multivariate logistic regression analysis showed that functional status (odds ratio [OR]: 3.57; 95% confidence interval [CI]: 1.17-6.19, concurrent lung disease (OR: 2.34; 95% CI: 1.08-4.99, depression (OR: 6.39; 95% CI: 2.42-17.35, and anxiety (OR: 2.45; 95% CI: 1.13-4.87 were independent risk factors for fatigue, whereas physical activity (OR: 0.27; 95% CI: 0.11-0.73 could prevent fatigue. Conclusion: More than half of the patients with early-stage NSCLC experienced fatigue 1-5 years after surgery, and moderate to severe fatigue was often associated with obvious dysfunction. The strong association of fatigue with anxiety, depression, and lung complications suggests that fatigue and other symptoms constitute a symptom cluster. Therefore, comprehensive treatment methods may achieve better therapeutic results.

  9. Pancreatic cancer: Lack of association between apparent diffusion coefficient values and adverse pathological features

    International Nuclear Information System (INIS)

    Aim: To identify retrospectively potential associations between apparent diffusion coefficient (ADC) values of pancreatic adenocarcinoma and tumour grade as well as other pathological features, using histopathological assessment from the Whipple procedure as the reference standard. Materials and methods: Thirty patients with pancreatic adenocarcinoma underwent magnetic resonance imaging (MRI) including diffusion-weighted imaging with b-values of 0 and 500 s/mm2 before the Whipple procedure. Two radiologists independently recorded the ADC values of the tumour and benign pancreas for all cases. ADC values were compared with histopathological findings following the Whipple procedure. Results: The intra-class correlation coefficient was 0.689 for benign pancreas and 0.695 for tumours, indicating good inter-reader agreement for ADC values. The mean ADC value was significantly lower in tumours than in benign pancreas for both readers (reader 1: 1.74 ± 0.34 × 10−3 mm2/s versus 2.08 ± 0.48 × 10−3 mm2/s, respectively, p = 0.006; reader 2: 1.69 ± 0.41 × 10−3 mm2/s versus 2.11 ± 0.54 × 10−3 mm2/s, respectively, p −3 mm2/s versus 1.78 ± 0.33 × 10−3 mm2/s, respectively, p = 0.491; reader 2: 1.62 ± 0.33 × 10−3 mm2/s versus 1.75 ± 0.49 × 10−3 mm2/s, respectively, p = 0.405). The area under the curve (AUC) for differentiation of poorly and well/moderately differentiated tumours was 0.611 and 0.596 for readers 1 and 2, respectively, and was not significantly better than an AUC of 0.500 for either reader (p ≥ 0.306). In addition, ADC was not significantly different for either reader between tumours with stage T3 versus stage T1/T2, between tumours with and without metastatic peri-pancreatic lymph nodes, or between tumours located in the pancreatic head versus other pancreatic regions (p ≥ 0.413). Conclusion: No associations between ADC values of pancreatic adenocarcinoma and tumour grade or other adverse pathological features were observed

  10. Expression of HIF-1α in breast cancer and precancerous lesions and the relationship to clinicopathological features

    Institute of Scientific and Technical Information of China (English)

    Yun’ai Liang; Zengxin Li; Gangping Wang

    2014-01-01

    Objective: The aim of this study was to observe the expressions and clinical significance of HIF-1α in breast cancer and precancerous lesions, and analyze the relationship between the expressions and clinicopathological features in breast cancer. Methods: We analyzed the HIF-1α expression in 128 cases of invasive ductal carcinomas, 146 precancerous lesions patients including 89 cases of ductal carcinoma in situ and 57 cases of atypical ductal hyperplasia. 53 cases of usual ductal hyperplasia breast tissues were selected as a control group. The specimens were evaluated for HIF-1α, estrogen re-ceptor (ER) & progesterone receptor (PR), epidermal growth factor receptor type 2 (HER2/neu) and Ki-67. Immunoreactivity was semi-quantitatively evaluated in at least 1000 cells examined under the microscope at 40 × magnification and recorded as the percentage of positive tumor cells over the total number of cells examined in the same area. The percentage scores were subsequently categorized. The express of HIF-1α and their relationship with multiple biological parameters including ER& PR, HER2/neu and Ki-67, the biomarkers levels of CA153, CA125 TSGF, and CEA in blood serum and nipple discharge, histological grade, region lymph node metastasis, distant metastasis and recurrence on files were also assessed. Results:Compared with usual ductal hyperplasia, the positive expression rate of HIF-1α in atypical ductal hyperplasia, ductal carci-noma in situ and invasive ductal carcinomas group was significantly increased (P 14% groups, histological grade (I + II) and grade III invasive ductal carcinomas groups, with lymph node metastasis, distant metastasis and recurrence groups (P50 years), tumor diameter (≤ 2 cm vs > 2 cm; P > 0.05). The nipple discharge and serum levels of CA153, TSGF, CA125 and CEA in invasive ductal carcinomas HIF-1α positive patients were significantly higher than those in the negative patients (P <0.05). Conclusion: In breast cancer, HIF-1α expression

  11. Specific features of current intraperitoneal therapy in patients with ovarian cancer

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    A. G. Kedrova

    2016-01-01

    Full Text Available Background. Today there are 3 trends in favor of intraperitoneal (IP chemotherapy: maintenance of its potential 5- and 10-year survival benefit in patients with ovarian cancer (OC; advantages of the IP administration of drugs even after nonoptimal surgery; enhancement of the efficiency of chemotherapy irrespective of the number of IP treatment cycles. There is also an expanded list of possible IP medicines and incorporation of novel targeted drugs into treatment regimens. However, the long-expected data of the most recent randomized trial GOG 0252 have proven deplorable and led to the activation of discussions on the role of IP therapy.Objective: to generalize the experience of 4 oncology departments with IP therapy in patients with disseminated OC and to compare the findings with those obtained by the world’s leading medical centers.Materials and methods. The retrospective analysis included 76 patients with Stage IIIC OC who had received IP chemotherapy in accordance with 3 regimens. For standardization of IP treatment procedures, the investigators assessed the following indicators: age; tumor morphological type; surgical radicality; catheter model and port placement procedure; drug administration route; number of treatment cycles; efficiency of therapy from expert ultrasonographic findings and CA-124, HE4, CA-19.9 marker levels, time to disease progression. The analysis also involved adverse manifestations, methods of their correction and the reasons for early treatment discontinuation were separately reported. The obtained data were processed using standard statistical programs.Results. 55 of the 76 patients could complete more than 4 IP therapy cycles. Among them, only 4 patients were observed to have disease progression at follow-ups lasting over 24 months.Conclusion. Current IP therapy is a safe and convenient drug treatment in patients with OC after optimal cytoreductive surgery. The mastery and standardization of the

  12. Features of radionuclide research after thyroidectomy at the thyroid gland cancer

    Directory of Open Access Journals (Sweden)

    David В Dolidze

    2015-02-01

    Full Text Available AimTo clarify the possibility of postoperative radioisotope studies in determining the remnants of thyroid tissue in patients with thyroid carcinoma.Materials and methodsThe work is based on the study results of surgical treatment and postoperative examination of 120 patients with thyroid cancer, at the Botkin hospital during the period from 2007 to 2013. All patients were performed extrafascial intervention. 118 (98.3% patients were provided thyroidectomy (including lymph node dissection. For all patients in the postoperative period after 2–4 weeks were performed thyroid and whole-body scan with iodine and technetium, as well as ultrasound and computed tomography of the neck and the chest cavity.ResultsDuring the research, 16 (13.3% patients after scanning with 123I (7 (5.8% patients, 131I (3 (2.5% patients, 99mTs-Pertechnetate (6 (5% patients and applying them consistently (6 (5% patients received the accumulation of the radiopharmaceutical in the operation area, as in the midline in the area of the isthmus, and the locations of the right, left and pyramidal thyroid share. These facts were interpreted as an accumulation of the isotope in the remnants of thyroid tissue after surgery. With additional research methods were revealed swelling and infiltration of tissues in 10 (8.3% cases in the sterno-hyoid and sterno-thyroid muscles, and in 6 (5% cases – in the paratracheal and paralaryngeal areas. After fine-needle aspiration biopsy from infiltrative zone was received cytology of nonspecific inflammation. All patients received antiinflammatory and antibiotic therapy with a positive effect. Control ultrasound noted a gradual reduction of the inflammatory infiltrate. After 6 months of thyroid scan was recorded decrease area of uptake, and a year later its complete disappearance.ConclusionsThus, postoperative radionuclide scanning in patients with thyroid gland carcinoma in some cases gives false-positive results, regardless of the type

  13. Aromatase Inhibitors and Other Compounds for Lowering Breast Cancer Risk

    Science.gov (United States)

    ... Cancer? Breast Cancer Colon/Rectum Cancer Lung Cancer Prostate Cancer Skin Cancer Show All Cancer Types News and Features Cancer Glossary ACS Bookstore Cancer Information Cancer Basics Cancer Prevention & Detection Signs & Symptoms of Cancer Treatments & Side Effects ...

  14. Staging of cervical cancer based on tumor heterogeneity characterized by texture features on 18F-FDG PET images

    International Nuclear Information System (INIS)

    The aim of the study is to assess the staging value of the tumor heterogeneity characterized by texture features and other commonly used semi-quantitative indices extracted from 18F-FDG PET images of cervical cancer (CC) patients. Forty-two patients suffering CC at different stages were enrolled in this study. Firstly, we proposed a new tumor segmentation method by combining the intensity and gradient field information in a level set framework. Secondly, fifty-four 3D texture features were studied besides of SUVs (SUVmax, SUVmean, SUVpeak) and metabolic tumor volume (MTV). Through correlation analysis, receiver-operating-characteristic (ROC) curves analysis, some independent indices showed statistically significant differences between the early stage (ES, stages I and II) and the advanced stage (AS, stages III and IV). Then the tumors represented by those independent indices could be automatically classified into ES and AS, and the most discriminative feature could be chosen. Finally, the robustness of the optimal index with respect to sampling schemes and the quality of the PET images were validated. Using the proposed segmentation method, the dice similarity coefficient and Hausdorff distance were 91.78   ±   1.66% and 7.94   ±   1.99 mm, respectively. According to the correlation analysis, all the fifty-eight indices could be divided into 20 groups. Six independent indices were selected for their highest areas under the ROC curves (AUROC), and showed significant differences between ES and AS (P  <  0.05). Through automatic classification with the support vector machine (SVM) Classifier, run percentage (RP) was the most discriminative index with the higher accuracy (88.10%) and larger AUROC (0.88). The Pearson correlation of RP under different sampling schemes is 0.9991   ±   0.0011. RP is a highly stable feature and well correlated with tumor stage in CC, which suggests it could differentiate ES and AS with high

  15. Computer-based image studies on tumor nests mathematical features of breast cancer and their clinical prognostic value.

    Directory of Open Access Journals (Sweden)

    Lin-Wei Wang

    Full Text Available BACKGROUND: The expending and invasive features of tumor nests could reflect the malignant biological behaviors of breast invasive ductal carcinoma. Useful information on cancer invasiveness hidden within tumor nests could be extracted and analyzed by computer image processing and big data analysis. METHODS: Tissue microarrays from invasive ductal carcinoma (n = 202 were first stained with cytokeratin by immunohistochemical method to clearly demarcate the tumor nests. Then an expert-aided computer analysis system was developed to study the mathematical and geometrical features of the tumor nests. Computer recognition system and imaging analysis software extracted tumor nests information, and mathematical features of tumor nests were calculated. The relationship between tumor nests mathematical parameters and patients' 5-year disease free survival was studied. RESULTS: There were 8 mathematical parameters extracted by expert-aided computer analysis system. Three mathematical parameters (number, circularity and total perimeter with area under curve >0.5 and 4 mathematical parameters (average area, average perimeter, total area/total perimeter, average (area/perimeter with area under curve <0.5 in ROC analysis were combined into integrated parameter 1 and integrated parameter 2, respectively. Multivariate analysis showed that integrated parameter 1 (P = 0.040 was independent prognostic factor of patients' 5-year disease free survival. The hazard risk ratio of integrated parameter 1 was 1.454 (HR 95% CI [1.017-2.078], higher than that of N stage (HR 1.396, 95% CI [1.125-1.733] and hormone receptor status (HR 0.575, 95% CI [0.353-0.936], but lower than that of histological grading (HR 3.370, 95% CI [1.125-5.364] and T stage (HR 1.610, 95% CI [1.026 -2.527]. CONCLUSIONS: This study indicated integrated parameter 1 of mathematical features (number, circularity and total perimeter of tumor nests could be a useful parameter to predict the

  16. SU-E-J-270: Repeated 18F-FDG PET/CTs Based Feature Analysis for the Predication of Anal Cancer Recurrence

    Energy Technology Data Exchange (ETDEWEB)

    Wang, J; Chuong, M; Choi, W; Lu, W [University of Maryland Baltimore School of Medicine, Baltimore, MD (United States); Latifi, K; Saeed, N; Hoffe, S; Shridhar, R; Moros, E [Moffitt Cancer Center, Tampa, FL (United States); Tan, S [University of Maryland Baltimore School of Medicine, Baltimore, MD (United States); Huazhong University of Science& Technology, Wuhan (China)

    2015-06-15

    Purpose: To identify PET/CT based imaging predictors of anal cancer recurrence and evaluate baseline vs. mid-treatment vs. post-treatment PET/CT scans in the tumor recurrence prediction. Methods: FDG-PET/CT scans were obtained at baseline, during chemoradiotherapy (CRT, midtreatment), and after CRT (post-treatment) in 17 patients of anal cancer. Four patients had tumor recurrence. For each patient, the mid-treatment and post-treatment scans were respectively aligned to the baseline scan by a rigid registration followed by a deformable registration. PET/CT image features were computed within the manually delineated tumor volume of each scan to characterize the intensity histogram, spatial patterns (texture), and shape of the tumors, as well as the changes of these features resulting from CRT. A total of 335 image features were extracted. An Exact Logistic Regression model was employed to analyze these PET/CT image features in order to identify potential predictors for tumor recurrence. Results: Eleven potential predictors of cancer recurrence were identified with p < 0.10, including five shape features, five statistical texture features, and one CT intensity histogram feature. Six features were indentified from posttreatment scans, 3 from mid-treatment scans, and 2 from baseline scans. These features indicated that there were differences in shape, intensity, and spatial pattern between tumors with and without recurrence. Recurrent tumors tended to have more compact shape (higher roundness and lower elongation) and larger intensity difference between baseline and follow-up scans, compared to non-recurrent tumors. Conclusion: PET/CT based anal cancer recurrence predictors were identified. The post-CRT PET/CT is the most important scan for the prediction of cancer recurrence. The baseline and mid-CRT PET/CT also showed value in the prediction and would be more useful for the predication of tumor recurrence in early stage of CRT. This work was supported in part by the

  17. SU-E-J-270: Repeated 18F-FDG PET/CTs Based Feature Analysis for the Predication of Anal Cancer Recurrence

    International Nuclear Information System (INIS)

    Purpose: To identify PET/CT based imaging predictors of anal cancer recurrence and evaluate baseline vs. mid-treatment vs. post-treatment PET/CT scans in the tumor recurrence prediction. Methods: FDG-PET/CT scans were obtained at baseline, during chemoradiotherapy (CRT, midtreatment), and after CRT (post-treatment) in 17 patients of anal cancer. Four patients had tumor recurrence. For each patient, the mid-treatment and post-treatment scans were respectively aligned to the baseline scan by a rigid registration followed by a deformable registration. PET/CT image features were computed within the manually delineated tumor volume of each scan to characterize the intensity histogram, spatial patterns (texture), and shape of the tumors, as well as the changes of these features resulting from CRT. A total of 335 image features were extracted. An Exact Logistic Regression model was employed to analyze these PET/CT image features in order to identify potential predictors for tumor recurrence. Results: Eleven potential predictors of cancer recurrence were identified with p < 0.10, including five shape features, five statistical texture features, and one CT intensity histogram feature. Six features were indentified from posttreatment scans, 3 from mid-treatment scans, and 2 from baseline scans. These features indicated that there were differences in shape, intensity, and spatial pattern between tumors with and without recurrence. Recurrent tumors tended to have more compact shape (higher roundness and lower elongation) and larger intensity difference between baseline and follow-up scans, compared to non-recurrent tumors. Conclusion: PET/CT based anal cancer recurrence predictors were identified. The post-CRT PET/CT is the most important scan for the prediction of cancer recurrence. The baseline and mid-CRT PET/CT also showed value in the prediction and would be more useful for the predication of tumor recurrence in early stage of CRT. This work was supported in part by the

  18. Altered features and increased chemosensitivity of human breast cancer cells mediated by adipose tissue-derived mesenchymal stromal cells

    International Nuclear Information System (INIS)

    Mesenchymal stromal cells (MSCs) represent heterogeneous cell population suitable for cell therapies in regenerative medicine. MSCs can also substantially affect tumor biology due to their ability to be recruited to the tumor stroma and interact with malignant cells via direct contacts and paracrine signaling. The aim of our study was to characterize molecular changes dictated by adipose tissue-derived mesenchymal stromal cells (AT-MSCs) and the effects on drug responses in human breast cancer cells SKBR3. The tumor cells were either directly cocultured with AT-MSCs or exposed to MSCs-conditioned medium (MSC-CM). Changes in cell biology were evaluated by kinetic live cell imaging, fluorescent microscopy, scratch wound assay, expression analysis, cytokine secretion profiling, ATP-based viability and apoptosis assays. The efficiency of cytotoxic treatment in the presence of AT-MSCs or MSCs-CM was analyzed. The AT-MSCs altered tumor cell morphology, induced epithelial-to-mesenchymal transition, increased mammosphere formation, cell confluence and migration of SKBR3. These features were attributed to molecular changes induced by MSCs-secreted cytokines and chemokines in breast cancer cells. AT-MSCs significantly inhibited the proliferation of SKBR3 cells in direct cocultures which was shown to be dependent on the SDF-1α/CXCR4 signaling axis. MSC-CM-exposed SKBR3 or SKBR3 in direct coculture with AT-MSCs exhibited increased chemosensitivity and induction of apoptosis in response to doxorubicin and 5-fluorouracil. Our work further highlights the multi-level nature of tumor-stromal cell interplay and demonstrates the capability of AT-MSCs and MSC-secreted factors to alter the anti-tumor drug responses

  19. Predicting Pathological Features at Radical Prostatectomy in Patients with Prostate Cancer Eligible for Active Surveillance by Multiparametric Magnetic Resonance Imaging

    Science.gov (United States)

    de Cobelli, Ottavio; Terracciano, Daniela; Tagliabue, Elena; Raimondi, Sara; Bottero, Danilo; Cioffi, Antonio; Jereczek-Fossa, Barbara; Petralia, Giuseppe; Cordima, Giovanni; Almeida, Gilberto Laurino; Lucarelli, Giuseppe; Buonerba, Carlo; Matei, Deliu Victor; Renne, Giuseppe; Di Lorenzo, Giuseppe; Ferro, Matteo

    2015-01-01

    Purpose The aim of this study was to investigate the prognostic performance of multiparametric magnetic resonance imaging (mpMRI) and Prostate Imaging Reporting and Data System (PIRADS) score in predicting pathologic features in a cohort of patients eligible for active surveillance who underwent radical prostatectomy. Methods A total of 223 patients who fulfilled the criteria for “Prostate Cancer Research International: Active Surveillance”, were included. Mp–1.5 Tesla MRI examination staging with endorectal coil was performed at least 6–8 weeks after TRUS-guided biopsy. In all patients, the likelihood of the presence of cancer was assigned using PIRADS score between 1 and 5. Outcomes of interest were: Gleason score upgrading, extra capsular extension (ECE), unfavorable prognosis (occurrence of both upgrading and ECE), large tumor volume (≥0.5ml), and seminal vesicle invasion (SVI). Receiver Operating Characteristic (ROC) curves and Decision Curve Analyses (DCA) were performed for models with and without inclusion of PIRADS score. Results Multivariate analysis demonstrated the association of PIRADS score with upgrading (P<0.0001), ECE (P<0.0001), unfavorable prognosis (P<0.0001), and large tumor volume (P = 0.002). ROC curves and DCA showed that models including PIRADS score resulted in greater net benefit for almost all the outcomes of interest, with the only exception of SVI. Conclusions mpMRI and PIRADS scoring are feasible tools in clinical setting and could be used as decision-support systems for a more accurate selection of patients eligible for AS. PMID:26444548

  20. SU-E-J-243: Reproducibility of Radiomics Features Through Different Voxel Discretization Levels in F18-FDG PET Images of Cervical Cancer

    Energy Technology Data Exchange (ETDEWEB)

    Altazi, B; Fernandez, D; Zhang, G; Biagioli, M; Moros, E; Moffitt, H. Lee [Cancer Center, Tampa, FL, University of South Florida, Tampa, FL (United States)

    2015-06-15

    Purpose: Site-specific investigations of the role of Radiomics in cancer diagnosis and therapy are needed. We report of the reproducibility of quantitative image features over different discrete voxel levels in PET/CT images of cervical cancer. Methods: Our dataset consisted of the pretreatment PET/CT scans from a cohort of 76 patients diagnosed with cervical cancer, FIGO stage IB-IVA, age range 31–76 years, treated with external beam radiation therapy to a dose range between 45–50.4 Gy (median dose: 45 Gy), concurrent cisplatin chemotherapy and MRI-based Brachytherapy to a dose of 20–30 Gy (median total dose: 28 Gy). Two board certified radiation oncologists delineated Metabolic Tumor volume (MTV) for each patient. Radiomics features were extracted based on 32, 64, 128 and 256 discretization levels (DL). The 64 level was chosen to be the reference DL. Features were calculated based on Co-occurrence (COM), Gray Level Size Zone (GLSZM) and Run-Length (RLM) matrices. Mean Percentage Differences (Δ) of features for discrete levels were determined. Normality distribution of Δ was tested using Kolomogorov - Smirnov test. Bland-Altman test was used to investigate differences between feature values measured on different DL. The mean, standard deviation and upper/lower value limits for each pair of DL were calculated. Interclass Correlation Coefficient (ICC) analysis was performed to examine the reliability of repeated measures within the context of the test re-test format. Results: 3 global and 5 regional features out of 48 features showed distribution not significantly different from a normal one. The reproducible features passed the normality test. Only 5 reproducible results were reliable, ICC range 0.7 – 0.99. Conclusion: Most of the radiomics features tested showed sensitivity to voxel level discretization between (32 – 256). Only 4 GLSZM, 3 COM and 1 RLM showed insensitivity towards mentioned discrete levels.

  1. Radiological imaging features and clinicopathological correlation of hemosiderotic fibrolipomatous tumor: experience in a single tertiary cancer center

    Energy Technology Data Exchange (ETDEWEB)

    O' Driscoll, Dearbhail; Athanasian, Edward; Hameed, Meera; Hwang, Sinchun [Memorial Sloan Kettering Cancer Center, New York, NY (United States)

    2015-05-01

    To determine the imaging features of hemosiderotic fibrolipomatous tumor (HFLT), which has a propensity towards local recurrence and the potential to transform into myxoinflammatory fibroblastic sarcoma (MIFS). The study included 8 patients with a diagnosis of HFLT and imaging at a tertiary cancer center. Imaging studies included radiographs (n = 2), ultrasound (n = 3), and MRI (n = 16). Imaging features were evaluated including location, calcification, sonographic echogenicity, vascular flow, size, border, signal characteristics, contrast enhancement, and blooming on MRI. The HFLT was located in the ankle/foot in 4 out of 8 and was subcutaneous in 8 out of 8, ranging in size from 2 to 18 cm. Histology at initial diagnosis was HFLT in 5 out of 8 and HFLT with MIFS in 3 out of 8. None was calcified on radiography. On ultrasound 2 out of 3 were heterogeneously echogenic with ≥10 foci of vascular flow. Two out of 8 patients had MRI only at local recurrence. The tumor border was infiltrative in 4 out of 6 at initial diagnosis and in 2 patients with MRI at recurrence only. Fat and septae were present in 7 out of 8 at initial diagnosis and at recurrence. Signal intensity was iso-/hypointense to muscle on T1-weighted sequences in more than two thirds of the tumor in 4 out of 7 and hyperintense to muscle in at least one third of the tumor on fluid-sensitive sequences in 6 out of 8. Contrast enhancement was heterogeneous in 7 out of 7; blooming in two thirds of the tumor on gradient-echo sequence MRI indicated hemorrhage. The HFLT commonly presents as a mass with an infiltrative border, interspersed fat and septations at initial diagnosis and local recurrence on MRI regardless of histology of HFLT alone or with MIFS. Hemosiderin deposits may be detected as blooming on gradient-echo sequences. (orig.)

  2. Follicular thyroid cancer in children and adolescents. Clinicopathologic features, long-term survival, and risk factors for recurrence

    International Nuclear Information System (INIS)

    Children and adolescents represent 1-1.5% of all patients with thyroid cancer (TC). The vast majority of TC in children and adolescents is papillary TC; follicular TC (FTC) is exceedingly rare. In this study, we evaluate the clinical and pathological features of FTC in children and adolescents. We also report the risk factors for post-operative tumor recurrence and the associated outcomes. Twenty children and adolescents (under 21 years old) with FTC have been treated and followed at Noguchi Thyroid Clinic and Hospital Foundation since 1946. All patients underwent surgery (lobectomy, 11; subtotal thyroidectomy, 8; and total thyroidectomy, 1), and 8 patients received postoperative external beam radiation therapy. The incidence of FTC in children and adolescents was 1.9% among all FTC patients treated in our hospital. Histopathology revealed vascular and capsular invasion in 9 and 20 patients, respectively. The tumor recurrence rate in FTC with vascular invasion is significantly higher than in those without it (p=0.038). No other factors were significant. Patients with recurrences were treated with completion thyroidectomy and 131I radioactive iodine therapy. There were no significant differences in the rates of disease-free survival or cause-specific survival when pediatric/adolescent FTC patients were compared to adults with FTC. FTC is very rare among children and adolescents, but the outcomes are similar to those observed among adults. Vascular invasion is poor prognostic indicator in pediatric/adolescent FTC patients. (author)

  3. Features of nursing care provided for breast cancer patients treated with radiotherapy following breast-conserving surgery. Comparison of nursing practices between certified nurses in breast cancer nursing and non-specialist nurses working with breast cancer patients

    International Nuclear Information System (INIS)

    This study aimed to identifying features of nursing care provided for breast cancer patients during the course of radiotherapy following breast-conserving surgery and improve the quality of nursing care. Subjects were certified nurses in breast cancer nursing (CN) and non-specialist nurses working with breast cancer patients (NS). An anonymous survey questionnaire on nursing care and other practices provided before, during, and after radiotherapy was conducted by postal mail and the results were compared between CN and NS. Valid responses were obtained from 40 CN (41.2%) and 102 NS (56.7%). Significant differences between CN and NS were observed for 15 of 27 (55.6%) care items before radiotherapy, 18 of 18 (100%) items during radiotherapy, and 9 of 20 (45.0%) items after radiotherapy. Among the items with significant differences, significantly more NS than CN performed all nursing care items during the course of radiotherapy, except for one item provided before radiotherapy. These results demonstrate that it is necessary to facilitate enhanced collaboration and coordination between CN and NS providing nursing care for breast cancer patients in order to improve the quality of nursing care delivered to patients. (author)

  4. SU-E-J-258: Prediction of Cervical Cancer Treatment Response Using Radiomics Features Based On F18-FDG Uptake in PET Images

    Energy Technology Data Exchange (ETDEWEB)

    Altazi, B; Fernandez, D; Zhang, G; Biagioli, M; Moros, E; Moffitt, H. Lee [Cancer Center, Tampa, FL, University of South Florida, Tampa, FL (United States)

    2015-06-15

    Purpose: Radiomics have shown potential for predicting treatment outcomes in several body sites. This study investigated the correlation between PET Radiomics features and treatment response of cervical cancer outcomes. Methods: our dataset consisted of a cohort of 79 patients diagnosed with cervical cancer, FIGO stage IB-IVA, age range 25–86 years, (median age at diagnosis: 50 years) all treated between: 2009–14 with external beam radiation therapy to a dose range between: 45–50.4 Gy (median= 45 Gy), concurrent cisplatin chemotherapy and MRI-based brachytherapy to a dose of 20–30 Gy (median= 28 Gy). Metabolic Tumor Volume (MTV) in patient’s primary site was delineated on pretreatment PET/CT by two board certified Radiation Oncologists. The features extracted from each patient’s volume were: 26 Co-occurrence matrix (COM) Feature, 11 Run-Length Matrix (RLM), 11 Gray Level Size Zone Matrix (GLSZM) and 33 Intensity-based features (IBF). The treatment outcome was divided based on the last follow up status into three classes: No Evidence of Disease (NED), Alive with Disease (AWD) and Dead of Disease (DOD). The ability for the radiomics features to differentiate between the 3 treatments outcome categories were assessed by One-Way ANOVA test with p-value < 0.05 was to be statistically significant. The results from the analysis were compared with the ones obtained previously for standard Uptake Value (SUV). Results: Based on patients last clinical follow-up; 52 showed NED, 17 AWD and 10 DOD. Radiomics Features were able to classify the patients based on their treatment response. A parallel analysis was done for SUV measurements for comparison. Conclusion: Radiomics features were able to differentiate between the three different classes of treatment outcomes. However, most of the features were only able to differentiate between NED and DOD class. Also, The ability or radiomics features to differentiate types of response were more significant than SUV.

  5. SU-E-J-258: Prediction of Cervical Cancer Treatment Response Using Radiomics Features Based On F18-FDG Uptake in PET Images

    International Nuclear Information System (INIS)

    Purpose: Radiomics have shown potential for predicting treatment outcomes in several body sites. This study investigated the correlation between PET Radiomics features and treatment response of cervical cancer outcomes. Methods: our dataset consisted of a cohort of 79 patients diagnosed with cervical cancer, FIGO stage IB-IVA, age range 25–86 years, (median age at diagnosis: 50 years) all treated between: 2009–14 with external beam radiation therapy to a dose range between: 45–50.4 Gy (median= 45 Gy), concurrent cisplatin chemotherapy and MRI-based brachytherapy to a dose of 20–30 Gy (median= 28 Gy). Metabolic Tumor Volume (MTV) in patient’s primary site was delineated on pretreatment PET/CT by two board certified Radiation Oncologists. The features extracted from each patient’s volume were: 26 Co-occurrence matrix (COM) Feature, 11 Run-Length Matrix (RLM), 11 Gray Level Size Zone Matrix (GLSZM) and 33 Intensity-based features (IBF). The treatment outcome was divided based on the last follow up status into three classes: No Evidence of Disease (NED), Alive with Disease (AWD) and Dead of Disease (DOD). The ability for the radiomics features to differentiate between the 3 treatments outcome categories were assessed by One-Way ANOVA test with p-value < 0.05 was to be statistically significant. The results from the analysis were compared with the ones obtained previously for standard Uptake Value (SUV). Results: Based on patients last clinical follow-up; 52 showed NED, 17 AWD and 10 DOD. Radiomics Features were able to classify the patients based on their treatment response. A parallel analysis was done for SUV measurements for comparison. Conclusion: Radiomics features were able to differentiate between the three different classes of treatment outcomes. However, most of the features were only able to differentiate between NED and DOD class. Also, The ability or radiomics features to differentiate types of response were more significant than SUV

  6. The influence of uncertain map features on risk beliefs and perceived ambiguity for maps of modeled cancer risk from air pollution

    OpenAIRE

    Severtson, Dolores; Myers, Jeffrey D.

    2012-01-01

    Maps are often used to convey information generated by models, for example, modeled cancer risk from air pollution. The concrete nature of images, such as maps, may convey more certainty than warranted for modeled information. Three map features were selected to communicate the uncertainty of modeled cancer risk: (a) map contours appeared in or out of focus, (b) one or three colors were used, and (c) a verbal-relative or numeric risk expression was used in the legend. Study aims were to asses...

  7. Comparison of Clinicopathological Features and Treatments between Young (≤40 Years) and Older (>40 Years) Female Breast Cancer Patients in West China: A Retrospective, Epidemiological, Multicenter, Case Only Study

    OpenAIRE

    Ke Wang; Yu Ren; Hongyuan Li; Ke Zheng; Jun Jiang; Tianning Zou; Binlin Ma; Hui Li; Qilun Liu; Jianghua Ou; Ling Wang; Wei Wei; Jianjun He; Guosheng Ren

    2016-01-01

    The incidence of young cases of breast cancer is higher in China compared to the western world. We aimed to explore differences in risk factors, clinicopathological features and treatment modes of young female breast cancer compared to older patients in West China. We collected clinical information from 12,209 female breast cancer patients in West China, including risk factors, clinicopathological features and treatment modes, from January 2010 to December 2012. Chi-square tests and the multi...

  8. TU-C-12A-09: Modeling Pathologic Response of Locally Advanced Esophageal Cancer to Chemo-Radiotherapy Using Quantitative PET/CT Features, Clinical Parameters and Demographics

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, H; Chen, W; Kligerman, S; D’Souza, W; Suntharalingam, M; Lu, W [University of Maryland School of Medicine, Baltimore, MD (United States); Tan, S [Huazhong University of Science and Technology, Wuhan (China); Kim, G [Duke University, High Point, NC (United States)

    2014-06-15

    Purpose: To develop predictive models using quantitative PET/CT features for the evaluation of tumor response to neoadjuvant chemo-radiotherapy (CRT) in patients with locally advanced esophageal cancer. Methods: This study included 20 patients who underwent tri-modality therapy (CRT + surgery) and had {sup 18}F-FDG PET/CT scans before initiation of CRT and 4-6 weeks after completion of CRT but prior to surgery. Four groups of tumor features were examined: (1) conventional PET/CT response measures (SUVmax, tumor diameter, etc.); (2) clinical parameters (TNM stage, histology, etc.) and demographics; (3) spatial-temporal PET features, which characterize tumor SUV intensity distribution, spatial patterns, geometry, and associated changes resulting from CRT; and (4) all features combined. An optimal feature set was identified with recursive feature selection and cross-validations. Support vector machine (SVM) and logistic regression (LR) models were constructed for prediction of pathologic tumor response to CRT, using cross-validations to avoid model over-fitting. Prediction accuracy was assessed via area under the receiver operating characteristic curve (AUC), and precision was evaluated via confidence intervals (CIs) of AUC. Results: When applied to the 4 groups of tumor features, the LR model achieved AUCs (95% CI) of 0.57 (0.10), 0.73 (0.07), 0.90 (0.06), and 0.90 (0.06). The SVM model achieved AUCs (95% CI) of 0.56 (0.07), 0.60 (0.06), 0.94 (0.02), and 1.00 (no misclassifications). Using spatial-temporal PET features combined with conventional PET/CT measures and clinical parameters, the SVM model achieved very high accuracy (AUC 1.00) and precision (no misclassifications), significantly better than using conventional PET/CT measures or clinical parameters and demographics alone. For groups with a large number of tumor features (groups 3 and 4), the SVM model achieved significantly higher accuracy than the LR model. Conclusion: The SVM model using all features

  9. CLINICAL FEATURES AND CLINICAL OUTCOME OF ACUTE PROMYELOCYTIC LEUKEMIA PATIENTS TREATED AT CAIRO NATIONAL CANCER INSTITUTE IN EGYPT

    Directory of Open Access Journals (Sweden)

    Tamer M Fouad

    2011-01-01

    Full Text Available

    The current study reports the clinical features and treatment outcome of 67 patients with acute promyelocytic leukemia (APL presented to National Cancer Institute (NCI-Cairo, in Egypt from January 2007 to January 2011. The median follow-up time was 36 months. All patients were treated with the simultaneous administration of all-trans retinoic acid (ATRA and anthracyclin. The treatment protocol was modified due to resource limitations at the NCI-Cairo by replacing of idarubicin with doxorubicin in most of the cases and the inclusion of cytarbine during the consolidation phase only in pediatric patients. All patients who achieved molecular complete remission (CRm after consolidation received two-year maintenance treatment with low dose chemotherapy composed of 6 mercaptopurine, methotrexate and intermittent ATRA courses. The median age at presentation was 29 years. There was a slight male predominance (53%.  Bleeding was the most common presenting symptom (79%. Most patients had an intermediate risk Sanz score (49% and 34% had a high risk score.  All patients achieved molecular CR at end of consolidation therapy with a median duration of 100 days. The main therapeutic complications during the induction phase were febrile neutropenia (42%, bleeding (18% and differentiation syndrome (11%. Five patients died at diagnosis due to bleeding, three died during induction chemotherapy due to febrile neutropenia (n=2 and bleeding (n=1 and one patient died during consolidation therapy due to febrile neutropenia.  The 3-year OS was 89% and relapse rate was 3%. Adapting standard AIDA treatment protocols to limited resources by reducing dose-intensity during treatment consolidation, using ATRA in the consolidation phase and alternative anthracyclin (doxorubicin may be a valid treatment option in developing countries. In spite of the increased incidence of high and intermediate risk score APL in our sample, we reported an acceptable CR rate

  10. CLINICAL FEATURES AND CLINICAL OUTCOME OF ACUTE PROMYELOCYTIC LEUKEMIA PATIENTS TREATED AT CAIRO NATIONAL CANCER INSTITUTE IN EGYPT

    Directory of Open Access Journals (Sweden)

    Ola Khorshid

    2011-12-01

    Full Text Available The current study reports the clinical features and treatment outcome of 67 patients with acute promyelocytic leukemia (APL presented to National Cancer Institute (NCI-Cairo, in Egypt from January 2007 to January 2011. The median follow-up time was 36 months. All patients were treated with the simultaneous administration of all-trans retinoic acid (ATRA and anthracyclin. The treatment protocol was modified due to resource limitations at the NCI-Cairo by replacing of idarubicin with doxorubicin in most of the cases and the inclusion of cytarbine during the consolidation phase only in pediatric patients. All patients who achieved molecular complete remission (CRm after consolidation received two-year maintenance treatment with low dose chemotherapy composed of 6 mercaptopurine, methotrexate and intermittent ATRA courses. The median age at presentation was 29 years. There was a slight male predominance (53%.  Bleeding was the most common presenting symptom (79%. Most patients had an intermediate risk Sanz score (49% and 34% had a high risk score.  All patients achieved molecular CR at end of consolidation therapy with a median duration of 100 days. The main therapeutic complications during the induction phase were febrile neutropenia (42%, bleeding (18% and differentiation syndrome (11%. Five patients died at diagnosis due to bleeding, three died during induction chemotherapy due to febrile neutropenia (n=2 and bleeding (n=1 and one patient died during consolidation therapy due to febrile neutropenia.  The 3-year OS was 89% and relapse rate was 3%. Adapting standard AIDA treatment protocols to limited resources by reducing dose-intensity during treatment consolidation, using ATRA in the consolidation phase and alternative anthracyclin (doxorubicin may be a valid treatment option in developing countries. In spite of the increased incidence of high and intermediate risk score APL in our sample, we reported an acceptable CR rate, toxicity and OS.

  11. Conserved features of cancer cells define their sensitivity of HAMLET-induced death; c-Myc and glycolysis

    OpenAIRE

    Storm, Petter; Puthia, Manoj Kumar; Aits, Sonja; Urbano, Alexander; Northen, Trent; Powers, Scott; Bowen, Ben; Chao, Yinxia; Reindl, Wolfgang; Lee, Do Yup; Sullivan, Nancy Liu; Zhang, Jianping; Trulsson, Maria; Yang, Henry; Watson, James

    2011-01-01

    HAMLET is the first member of a new family of tumoricidal protein-lipid complexes that kill cancer cells broadly, while sparing healthy, differentiated cells. Many and diverse tumor cell types are sensitive to the lethal effect, suggesting that HAMLET identifies and activates conserved death pathways in cancer cells. Here we investigated the molecular basis for the difference in sensitivity between cancer cells and healthy cells. Using a combination of small hairpin RNA inhibition, proteomic ...

  12. Highly tumorigenic lung cancer CD133+ cells display stem-like features and are spared by cisplatin treatment

    OpenAIRE

    Bertolini, Giulia; Roz, Luca; Perego, Paola; Tortoreto, Monica; Fontanella, Enrico; Gatti, Laura; Pratesi, Graziella; Fabbri, Alessandra; Andriani, Francesca; Tinelli, Stella; Roz, Elena; Caserini, Roberto; Lo Vullo, Salvatore; Camerini, Tiziana; Mariani, Luigi

    2009-01-01

    The identification of lung tumor-initiating cells and associated markers may be useful for optimization of therapeutic approaches and for predictive and prognostic information in lung cancer patients. CD133, a surface glycoprotein linked to organ-specific stem cells, was described as a marker of cancer-initiating cells in different tumor types. Here, we report that a CD133+, epithelial-specific antigen-positive (CD133+ESA+) population is increased in primary nonsmall cell lung cancer (NSCLC) ...

  13. Do Clinical and Demographic Features of Patients with Upper-Gastrointestinal Cancer Affect their Health-related Quality of Life?

    Directory of Open Access Journals (Sweden)

    Ramezan-Ali Esmaili-Hesari

    2012-01-01

    Conclusion: SCC is predominant type of upper GI cancer in Khorasan provinces similar to the high risk area in Northern Iran. The specific health-related quality of life tool (EORTC QLQ-OG25 was able to distinguish most of the symptoms in patients with upper GI cancer .

  14. Cancer survival in the elderly: Effects of socio-economic factors and health care system features (ELDCARE project)

    NARCIS (Netherlands)

    M. Vercelli (Marina); R. Lillini (Roberto); R. Capocaccia (Riccardo); A. Micheli; J.W.W. Coebergh (Jan Willem); M.J. Quinn (M.); C. Martinez-Garcia (Carmen); A. Quaglia (Alberto); W. Oberaigner; J. Ajmová (J.); T. Aareleid (T.); J. Palo (Jukka); T. Hakulinen (Timo); P. Grosclaude (P.); H. Ziegler (H.); L. Tryggvadottir (Laufey); F. Langmark (F.); A. Andersen; M. Bielska-Lasota (Magdalena); M.A. Pinheiro (Magda Avelar); I. Pleško (I.); V. Pompe-Kirn (V.); P. Ecimovic (P.); T. Möller (Thomas); J.-M. Lutz (J.)

    2006-01-01

    textabstractThe purpose of the ELDCARE project is to study differences in cancer survival for elderly patients by country, taking into account the socio-economic conditions and the characteristics of health care systems at the ecological level. Fifty-three European cancer registries, from 19 countri

  15. Modeling Pathologic Response of Esophageal Cancer to Chemoradiation Therapy Using Spatial-Temporal {sup 18}F-FDG PET Features, Clinical Parameters, and Demographics

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Hao [Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland (United States); Tan, Shan [Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland (United States); Department of Control Science and Engineering, Huazhong University of Science and Technology, Wuhan (China); Chen, Wengen; Kligerman, Seth [Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, Baltimore, Maryland (United States); Kim, Grace; D' Souza, Warren D.; Suntharalingam, Mohan [Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland (United States); Lu, Wei, E-mail: wlu@umm.edu [Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland (United States)

    2014-01-01

    Purpose: To construct predictive models using comprehensive tumor features for the evaluation of tumor response to neoadjuvant chemoradiation therapy (CRT) in patients with esophageal cancer. Methods and Materials: This study included 20 patients who underwent trimodality therapy (CRT + surgery) and underwent {sup 18}F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) both before and after CRT. Four groups of tumor features were examined: (1) conventional PET/CT response measures (eg, standardized uptake value [SUV]{sub max}, tumor diameter); (2) clinical parameters (eg, TNM stage, histology) and demographics; (3) spatial-temporal PET features, which characterize tumor SUV intensity distribution, spatial patterns, geometry, and associated changes resulting from CRT; and (4) all features combined. An optimal feature set was identified with recursive feature selection and cross-validations. Support vector machine (SVM) and logistic regression (LR) models were constructed for prediction of pathologic tumor response to CRT, cross-validations being used to avoid model overfitting. Prediction accuracy was assessed by area under the receiver operating characteristic curve (AUC), and precision was evaluated by confidence intervals (CIs) of AUC. Results: When applied to the 4 groups of tumor features, the LR model achieved AUCs (95% CI) of 0.57 (0.10), 0.73 (0.07), 0.90 (0.06), and 0.90 (0.06). The SVM model achieved AUCs (95% CI) of 0.56 (0.07), 0.60 (0.06), 0.94 (0.02), and 1.00 (no misclassifications). With the use of spatial-temporal PET features combined with conventional PET/CT measures and clinical parameters, the SVM model achieved very high accuracy (AUC 1.00) and precision (no misclassifications)—results that were significantly better than when conventional PET/CT measures or clinical parameters and demographics alone were used. For groups with many tumor features (groups 3 and 4), the SVM model achieved significantly higher

  16. Abnormal expression of vascular endothelial growth factor (VEGF) and its clinical features in tissues of human lung cancer

    Institute of Scientific and Technical Information of China (English)

    Xinhua Wu; Dengfu Yao; Gongshen Shi; Liwei Qiu; Wei Wu; Songshi Ni; Xueguang Zhang

    2005-01-01

    Objective: Angiogennesis, the formation of new blood vessels from the existing vascular bed, is essential step for growth and invasion of primary tumor. Vascular endothelial growth-factor (VEGF) is known to play crucial role in tumor angiogenesis. In the present study, we investigate the expression of VEGF and VEGF-mRNA in the angiogennesis, metastasis and prognosis of lung cancer.Methods: The VEGF cellular distributions and expression in 38 specimens of patients with lung cancer were investigated with immunohistochemistry stain technology. The total RNAs in 38 tissues of lung cancer was measured, then the levels of VEGF-mRNA expression were analyzed by a reverse-transcription polymerase chain reaction (RT-PCR) assay. The levels of VEGF in sera of patients with lung cancer, benign lung diseases and healthy controls were detected through Enzyme linked immunosorbent assay (ELISA) method. Results: The VEGF positive stain was 76% in 38 cases of lung cancer specimens. The 89% rate of VEGF stain was found for clinical stage Ⅲ cases and 92%for stage Ⅳ lung cancers. The significantly higher expression of VEGF was evidenced in patients with lymph node metastasis (84 % ), distant metastasis (90%), and lung cancers with lower histological differentiation (89%), respectively. The expression level of total RNA was significantly higher in patients with lung cancers than that in their paracancerous or distant lung tissues. The VEGF expressions were tightly correlated with total RNA concentration of lung carcinoma ( P < 0.01 ). The predominant expressions of VEGF121 and VEGF165 gene fragments were found in lung cancer specimens by RT-PCR analysis. No significant difference of serum VEGF levels was detected between cases with lung cancer and patients with benign diseases. However, the VEGF level of cases with benign diseases was decreased significantly after patients with anti-inflammation medication. Conclusion: The present data suggested that the tumor tissue VEGF

  17. Inhibition of glucose turnover by 3-bromopyruvate counteracts pancreatic cancer stem cell features and sensitizes cells to gemcitabine

    OpenAIRE

    Isayev, Orkhan; Rausch, Vanessa; BAUER, NATHALIE; Liu, Li; Fan, Pei; Zhang, Yiyao; Gladkich, Jury; Nwaeburu, Clifford C.; Mattern, Jürgen; Mollenhauer, Martin; Rückert, Felix; Zach, Sebastian; Haberkorn, Uwe; Gross, Wolfgang; Schönsiegel, Frank

    2014-01-01

    According to the cancer stem cell (CSC) hypothesis, the aggressive growth and early metastasis of pancreatic ductal adenocarcinoma (PDA) is due to the activity of CSCs, which are not targeted by current therapies. Otto Warburg suggested that the growth of cancer cells is driven by a high glucose metabolism. Here, we investigated whether glycolysis inhibition targets CSCs and thus may enhance therapeutic efficacy. Four established and 3 primary PDA cell lines, non-malignant cells, and 3 patien...

  18. [Consensuses on lung cancer treatment by Chinese medicine experts from Beijing and Guangzhou and medication features in the North and South China].

    Science.gov (United States)

    Wang, Shu-mei; Lin, Li-zhu; Nie, Hui

    2011-07-01

    To study the consensuses on lung cancer treatment by Chinese medicine experts from North China and South China, and to analyze their medication features from viewpoints such as the medication frequency, combination laws, medication classification by collecting 800 recipes on the treatment of lung cancer patients prescribed by 8 Chinese oncologists from Guanganmen Hospital of China Academy of Chinese Medical Sciences, the Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, and Guangdong Provincial Hospital of Traditional Chinese Medicine. Results showed that coix seed, poria, pinelliae tuber were the three herbs most commonly used in treatment of lung cancer by all experts. They generally accepted Pi invigorating and phlegm removing method as the basic treatment method for treating lung cancer. Secondly, they usually used white peony root, heterophylla falsestarwort root, and ophiopogonis tuber, etc. (with higher medication frequency) to nourish yin and moisten Fei. Thirdly, consistency was also shown in clearing heat, detoxication, and anticancer. Smilacis glabra, Rhizoma Smilacis Glabrae, Herba Hedyotis diffusae, Herba Scutellariae Barbatae were herbs used by all experts. However, there were differences between oncologists in North China and South China. Oncologists in South China paid more attention to heat toxin and blood stasis, while those in North China paid more attention to supplementing both qi and yin. PMID:21866673

  19. Intrinsic subtypes and tumor grades in breast cancer are associated with distinct 3-D power Doppler sonographic vascular features

    Energy Technology Data Exchange (ETDEWEB)

    Chang, Yeun-Chung [Department of Medical Imaging, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 10041, Taiwan, ROC (China); Huang, Yao-Sian [Department of Computer Science and Information Engineering, National Taiwan University, Taipei 10617, Taiwan, ROC (China); Huang, Chiun-Sheng [Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 10041, Taiwan, ROC (China); Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei 10617, Taiwan, ROC (China); Chen, Jeon-Hor [Center for Functional Onco-Imaging and Department of Radiological Science, University of California Irvine, California, CA 92868 (United States); Department of Radiology, E-Da Hospital and I-Shou University, Kaohsiung 82445, Taiwan, ROC (China); Chang, Ruey-Feng, E-mail: rfchang@csie.ntu.edu.tw [Department of Computer Science and Information Engineering, National Taiwan University, Taipei 10617, Taiwan, ROC (China); Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei 10617, Taiwan, ROC (China)

    2014-08-15

    Purpose: This study aimed to investigate the three-dimensional (3-D) power Doppler ultrasonographic (PDUS) vascular features of breast carcinoma according to intrinsic subtypes, nodal stage, and tumor grade. Materials and methods: Total 115 receiving mastectomy breast carcinomas (mean size, 2.5 cm; range, 0.7–6.5 cm), including 102 invasive ductal carcinomas (IDC), 10 ductal carcinomas in situ (DCIS), and 3 invasive lobular carcinomas (ILC) diagnosed after mastectomy, were used in this retrospective study. Sixty IDC had nodal status and histopathologic tumor grades available for analysis. Vascular features, including number of vascular trees (NV), longest path length (LPL), total vessel length (TVL), number of bifurcations (NB), distance metric (DM), inflection count metric (ICM), vessel diameter (VD), and vessel-to-volume ratio (VVR) were extracted using 3-D thinning method. The Mann–Whitney U test, Student's t-test, one-way ANOVA, and Kruskal–Wallis test were performed as appropriate. Results: There was no significant difference of vascular features among IDC, DCIS and ILC. Except VD, vascular features in luminal type were significantly lower compared to HER2-enriched or triple negative types (p < 0.05). Compared to ER+ (estrogen receptor positive) tumors, all features in ER− (estrogen receptor negative) tumors were significantly higher (p < 0.01). Despite some significantly higher vascular features in high grade IDC compared to low and intermediate grade, there was no significant correlation between vascular features and nodal stages. Conclusion: Differences in 3-D PDUS vascular features among intrinsic types of IDC are attributed to their ER status. Vascular features extracted by 3-D PDUS correlate with tumor grades but not nodal stage in IDC.

  20. Feature Extraction of Mammograms

    Directory of Open Access Journals (Sweden)

    Monika Sharma

    2012-09-01

    Full Text Available Breast cancer is the second leading cause of cancer deaths in women today. Early detection of the cancer can reduce mortality rate. Studies have shown that radiologists can miss the detection of a significant proportion of abnormalities in addition to having high rates of false positives. Pattern recognition in image processing requires the extraction of features from regions of the image and the processing of these features with a pattern recognition algorithm. We consider the feature extraction part of this processing; with a focus on the problem of micro calcification detection in digital mammography. For every pattern classification problem, the most important stage is feature extraction. The accuracy of the classification depends on the feature extraction stage. We have extracted textural, statistical and structural features which show promising results than most of the existing technology.

  1. Conversion to stem-cell state in response to microenvironmental cues is regulated by balance between epithelial and mesenchymal features in lung cancer cells.

    Science.gov (United States)

    Andriani, Francesca; Bertolini, Giulia; Facchinetti, Federica; Baldoli, Erika; Moro, Massimo; Casalini, Patrizia; Caserini, Roberto; Milione, Massimo; Leone, Giorgia; Pelosi, Giuseppe; Pastorino, Ugo; Sozzi, Gabriella; Roz, Luca

    2016-02-01

    Cancer cells within a tumor are functionally heterogeneous and specific subpopulations, defined as cancer initiating cells (CICs), are endowed with higher tumor forming potential. The CIC state, however, is not hierarchically stable and conversion of non-CICs to CICs under microenvironment signals might represent a determinant of tumor aggressiveness. How plasticity is regulated at the cellular level is however poorly understood. To identify determinants of plasticity in lung cancer we exposed eight different cell lines to TGFβ1 to induce EMT and stimulate modulation of CD133(+) CICs. We show that response to TGFβ1 treatment is heterogeneous with some cells readily switching to stem cell state (1.5-2 fold CICs increase) and others being unresponsive to stimulation. This response is unrelated to original CICs content or extent of EMT engagement but is tightly dependent on balance between epithelial and mesenchymal features as measured by the ratio of expression of CDH1 (E-cadherin) to SNAI2. Epigenetic modulation of this balance can restore sensitivity of unresponsive models to microenvironmental stimuli, including those elicited by cancer-associated fibroblasts both in vitro and in vivo. In particular, tumors with increased prevalence of cells with features of partial EMT (hybrid epithelial/mesenchymal phenotype) are endowed with the highest plasticity and specific patterns of expression of SNAI2 and CDH1 markers identify a subset of tumors with worse prognosis. In conclusion, here we describe a connection between a hybrid epithelial/mesenchymal phenotype and conversion to stem-cell state in response to external stimuli. These findings have implications for current endeavors to identify tumors with increased plasticity.

  2. Comparison of the epidemiologic features and patterns of initial care for prostate cancer between public and private institutions: a survey by the Brazilian Society of Urology

    Directory of Open Access Journals (Sweden)

    Aguinaldo Cesar Nardi

    2012-04-01

    Full Text Available OBJECTIVE: To describe the epidemiological features and patterns of initial care for prostate cancer at public and private institutions in the State of Sao Paulo, Brazil. MATERIALS AND METHODS: A total of 1,082 physicians affiliated to the Sao Paulo Section of the Brazilian Society of Urology were invited to participate in this cross-sectional, web-based survey. Between September 2004 and September 2005, participating urologists entered data on demographic, clinical and pathological characteristics of patients diagnosed with prostate cancer in their practice. Data on patients attended at public institutions were analyzed and compared with those patients attended at private practice. RESULTS: One hundred and ten society members contributed with data from 1915 patients, 1026 (53.6% of whom from public institutions. When compared with patients attended at private institutions, those attended at public institutions were older and more likely to be black, had higher serum prostate specific antigen (PSA levels, had a higher probability of being diagnosed with metastatic disease, but were less likely to undergo prostatectomy (all P < 0.001. In multivariate analysis, age, biopsy Gleason score, and being attended at a public institution were independently associated with metastatic disease upon diagnosis. The significant predictors of nonsurgical treatment were age, black race, and higher serum levels of PSA. CONCLUSIONS: A statewide registry provides valuable information regarding patient demographics, clinical features, and patterns of care. The results of this study suggest that significant disparities exist for patients with prostate cancer attended at different health-care systems. The relative contribution of biological versus socioeconomic features remains uncertain.

  3. Clinical features and hMSH2/hMLH1 germ-line mutations in Chinese patients with hereditary nonpolyposis colorectal cancer

    Institute of Scientific and Technical Information of China (English)

    SHEN Xuan-san; ZHAO Bo; WANG Zhen-jun

    2008-01-01

    Background At least five mismatch repair (MMR) genes, including hMSH2, hMLH1, hPMS, hPMS2, and hMSH6/GTBP, are associated with hereditary nonpolyposis colorectal cancer (HNPCC). More than 90% of families with HNPCC harbor the hMSH2 and hMLH1 gene mutations. We have analyzed the clinical features of HNPCC among Chinese patients and report the results of screening for mutations in the hMSH2 and hMLH1 genes.Methods The data concerning gender, site of colorectal cancer (CRC), age at diagnosis, history of synchronous and/or metachronous colorectal cancer, instance of extracolonic cancers, and histopathology of tumors for 126 patients from 28 independent families with HNPCC were collected. Fifteen of the families met the Amsterdam I criteria, and 13 met the Japanese clinical criteria for diagnosis. Genomic DNA was extracted from the peripheral lymphocytes. Polymerase chain reaction (PCR) and denaturing high-performance liquid chromatography (DHPLC) were used to screen the coding region of the hMSH2 and hMLH1 genes. Samples showing abnormal DHPLC profiles were sequenced.Results One hundred and seventy malignant neoplasms were found in the 126 patients, of whom 23 had multiple cancers. Ninety-eight of the patients (77.8%) had colorectal cancers, with an average age at onset of 45.9 years and a right-sided predominance. Eight hMSH2 or hMLH1 gene sequence variations were found in 12 families, and a germ-line G204X nonsense mutation in the third exon of hMSH2 was found, representing the first mutation in an MMR gene ever found in people of Chinese Mongolian ethnicity.Conclusions HNPCC is a typical autosomally dominant hereditary disease, characterized by early onset, a predominance of proximal colorectal cancer, and multiple synchronous and metachronous colorectal cancers. DHPLC is a powerful tool for detecting mutations in the hMSH2 and hMLH1 genes. Mutations in the first nine exons of the hMLH1 gene were more common in Chinese patients.

  4. Prognostic Impact of Clinicopathological Features and Expression of Biomarkers Related to F-18-FDG Uptake in Esophageal Cancer

    NARCIS (Netherlands)

    Schreurs, L. M. A.; Smit, J. K.; Pavlov, K.; Pultrum, B. B.; Pruim, J.; Groen, Henk; Hollema, H.; Plukker, John Th. M.

    2014-01-01

    To analyze the association between pretreatment 18-F-fluoro-deoxyglucose (FDG) uptake and characteristics of aggressive tumor biology in predicting outcome in esophageal cancer (EC). Tumor FDG-uptake was measured by maximum standardized uptake values (SUVmax) in 47 patients undergoing esophagectomy

  5. ANALYSIS OF THE RESULTS OF NEODJUVANT TREATMENT IN PATIENTS WITH CONSIDERATION FOR THE IMMUNOPHENOTYPICAL FEATURES OF BREAST CANCER

    OpenAIRE

    A. A. Subbotina; V. P. Letyagin; N. N. Tupitsyn; I. V. Vysotskaya; V. D. Yermilova

    2008-01-01

    The efficiency of neoadjuvant chemotherapy is directly related to the expression of CD95 (FAS/APO-1) apoptosis receptor on cancer cells, which is confirmed with the pathomorphism and changes of CD95-positive cells during neoadjuvant chemotherapy (the most effective CAF regimen is cyclophosphan, doxorubicin, and 5- fluorouracil).

  6. A New Biological Feature of Natural Killer Cells: The Recognition of Solid Tumor-Derived Cancer Stem Cells

    Science.gov (United States)

    Tallerico, Rossana; Garofalo, Cinzia; Carbone, Ennio

    2016-01-01

    Natural killer (NK) cells are classified as a member of the innate lymphoid cells (ILCs) group 1. ILCs have been recently identified and grouped on the basis of their phenotypical and functional characteristics. They are effectors of innate immunity and are involved in secondary lymphoid organ generation and tissue remodeling. NK cells are powerful cytotoxic lymphocytes able to recognize and eliminate tumor- and virus-infected cells by limiting their spread and tissue damage. The recognition of tumor cells is mediated by both activating and inhibitory receptors. While in hematological malignancies the role played by NK cells is widely known, their role in recognizing solid tumors remains unclear. Recently, tumor cell populations have been divided into two compartments: cancer-initiating cells (CICs) or cancer stem cells (CSCs) and senescent tumor cells. Here, CSC will be used. CSCs are a small subset of malignant cells with stem-like properties that are involved in tumor maintenance and recurrence due to their ability to survive to traditional therapies; they are, moreover, poorly recognized by T lymphocytes. Recent data showed that NK cells recognize in vitro cancer-initiating cells derived from colon cancer, glioblastoma, and melanoma. However, more in vivo studies are urgently required to fully understand whether these new antitumor NK cells with cytotoxic capability may be considered in the design of new immunotherapeutic interventions. PMID:27242786

  7. Notch-1 signaling promotes the malignant features of human breast cancer through NF-κB activation.

    Directory of Open Access Journals (Sweden)

    Li Li

    Full Text Available The aberrant activation of Notch-1 signaling pathway has been proven to be associated with the development and progression of cancers. However, the specific roles and the underlying mechanisms of Notch-1 signaling pathway on the malignant behaviors of breast cancer are poorly understood. In this study, using multiple cellular and molecular approaches, we demonstrated that activation of Notch-1 signaling pathway promoted the malignant behaviors of MDA-MB-231 cells such as increased cell proliferation, colony formation, adhesion, migration, and invasion, and inhibited apoptosis; whereas deactivation of this signaling pathway led to the reversal of the aforementioned malignant cellular behaviors. Furthermore, we found that activation of Notch-1 signaling pathway triggered the activation of NF-κB signaling pathway and up-regulated the expression of NF-κB target genes including MMP-2/-9, VEGF, Survivin, Bcl-xL, and Cyclin D1. These results suggest that Notch-1 signaling pathway play important roles in promoting the malignant phenotype of breast cancer, which may be mediated partly through the activation of NF-κB signaling pathway. Our results further suggest that targeting Notch-1 signaling pathway may become a newer approach to halt the progression of breast cancer.

  8. Downregulation of miR-92a is associated with aggressive breast cancer features and increased tumour macrophage infiltration.

    Directory of Open Access Journals (Sweden)

    Sofie Nilsson

    Full Text Available BACKGROUND: MicroRNAs are small non-coding RNAs involved in the regulation of gene expression on a posttranscriptional level. These regulatory RNAs have been implicated in numerous cellular processes and are further deregulated in different cancer types, including breast cancer. MiR-92a is part of the miR-17∼92 cluster, which was first reported to be linked to tumourigenesis. However, little is known about the expression of miR-92a in breast cancer and potential associations to tumour properties. The expression of miR-92a was therefore characterized in 144 invasive breast cancer samples using in situ hybridization and related to clinico-pathological data as well as to selected key properties of the tumour stroma, including the presence of macrophages (CD68 and cancer activated fibroblasts (alpha-SMA. METHODOLOGY/PRINCIPAL FINDINGS: To measure miR-92a levels, an in situ hybridisation protocol was developed and validated using cell lines and miR-92a inhibitors. The expression in the tumour samples was objectively evaluated using digital image analysis program subtracting background activities. We found that the miR-92a expression varied between tumours and was inversely correlated to tumour grade (r = -0.276, p = 0.003 and recurrence-free survival (p = 0.008 and provided independent prognostic information in multivariate Cox analysis (HR: 0.375, CI: 0.145-0.972, p = 0.043. MiR-92a was moreover inversely correlated to the number of infiltrating macrophages in the tumour stroma (r = -0.357, p<0.001, and downregulation of miR-92a promoted cell migration (p<0.01. CONCLUSIONS/SIGNIFICANCE: This study demonstrates that downregulation of miR-92a in breast cancer is linked to key epithelial and stromal properties as well as clinical outcome.

  9. Progress against Prostate Cancer

    Science.gov (United States)

    ... this page please turn Javascript on. Feature: Prostate Cancer Progress Against Prostate Cancer Past Issues / Winter 2010 Table of Contents ... Read More "Prostate Cancer" Articles Progress Against Prostate Cancer / Prostate Cancer Research Trial Helps John Spencer Treat His ...

  10. Anaplastic lymphoma kinase gene copy number gain in inflammatory breast cancer (IBC: prevalence, clinicopathologic features and prognostic implication.

    Directory of Open Access Journals (Sweden)

    Min Hwan Kim

    Full Text Available Inflammatory breast cancer (IBC is the most aggressive form of breast cancer, and its molecular pathogenesis still remains to be elucidated. This study aimed to evaluate the prevalence and implication of anaplastic lymphoma kinase (ALK copy number change in IBC patients.We retrospectively collected formalin-fixed, paraffin-embedded tumor tissues and medical records of IBC patients from several institutes in Korea. ALK gene copy number change and rearrangement were assessed by fluorescence in situ hybridization (FISH assay, and ALK expression status was evaluated by immunohistochemical (IHC staining.Thirty-six IBC patients including those with HER2 (+ breast cancer (16/36, 44.4% and triple-negative breast cancer (13/36, 36.1% were enrolled in this study. ALK copy number gain (CNG was observed in 47.2% (17/36 of patients, including one patient who harbored ALK gene amplification. ALK CNG (+ patients showed significantly worse overall survival compared to ALK CNG (- patients in univariate analysis (24.9 months vs. 38.1 months, p = 0.033. Recurrence free survival (RFS after curative mastectomy was also significantly shorter in ALK CNG (+ patients than in ALK CNG (- patients (n = 22, 12.7 months vs. 43.3 months, p = 0.016. Multivariate Cox regression analysis with adjustment for HER2 and ER statuses showed significantly poorer RFS for ALK CNG (+ patients (HR 5.63, 95% CI 1.11-28.44, p = 0.037.This study shows a significant presence of ALK CNG in IBC patients, and ALK CNG was associated with significantly poorer RFS.

  11. Acquisition of Chemoresistance and Other Malignancy-related Features of Colorectal Cancer Cells Are Incremented by Ribosome-inactivating Stress.

    Science.gov (United States)

    Oh, Chang-Kyu; Lee, Seung Joon; Park, Seong-Hwan; Moon, Yuseok

    2016-05-01

    Colorectal cancer (CRC) as an environmental disease is largely influenced by accumulated epithelial stress from diverse environmental causes. We are exposed to ribosome-related insults, including ribosome-inactivating stress (RIS), from the environment, dietary factors, and medicines, but their physiological impacts on the chemotherapy of CRC are not yet understood. Here we revealed the effects of RIS on chemosensitivity and other malignancy-related properties of CRC cells. First, RIS led to bidirectional inhibition of p53-macrophage inhibitory cytokine 1 (MIC-1)-mediated death responses in response to anticancer drugs by either enhancing ATF3-linked antiapoptotic signaling or intrinsically inhibiting MIC-1 and p53 expression, regardless of ATF3. Second, RIS enhanced the epithelial-mesenchymal transition and biogenesis of cancer stem-like cells in an ATF3-dependent manner. These findings indicate that gastrointestinal exposure to RIS interferes with the efficacy of chemotherapeutics, mechanistically implying that ATF3-linked malignancy and chemoresistance can be novel therapeutic targets for the treatment of environmentally aggravated cancers.

  12. Feature Extraction of Mammograms

    Directory of Open Access Journals (Sweden)

    Monika Sharma

    2012-09-01

    Full Text Available Breast cancer is the second leading cause of cancer deathsin women today. Early detection of the cancer can reducemortality rate. Studies have shown that radiologists canmiss the detection of a significant proportion ofabnormalities in addition to having high rates of falsepositives. Pattern recognition in image processing requiresthe extraction of features from regions of the image andthe processing of these features with a pattern recognitionalgorithm. We consider the feature extraction part of thisprocessing; with a focus on the problem of microcalcification detection in digital mammography. For everypattern classification problem, the most important stage isfeature extraction. The accuracy of the classificationdepends on the feature extraction stage. We have extractedtextural, statistical and structural features which showpromising results than most of the existing technology.

  13. The fluorescent bioprobe with aggregation-induced emission features for monitoring to carbon dioxide generation rate in single living cell and early identification of cancer cells.

    Science.gov (United States)

    Chen, Didi; Wang, Huan; Dong, Lichao; Liu, Pai; Zhang, Yahui; Shi, Jianbing; Feng, Xiao; Zhi, Junge; Tong, Bin; Dong, Yuping

    2016-10-01

    A novel fluorescent probe, tris (2-(dimethylamino) ethyl)-4,4',4″-(1H-pyrrole-1,2,5-triyl) tribenzoate (TPP-TMAE), with aggregation-enhanced emission (AEE) feature showed a simple, highly selective, specific, and instant response to trace amount carbon dioxide (CO2). Because of this special characteristic, TPP-TMAE is ideal to be a biomarker for in-situ monitoring of the CO2 generation rate during the metabolism of single living cell. The rates in single living HeLa cell, MCF-7 cell, and MEF cell were 6.40 × 10(-6)±6.0 × 10(-8) μg/h, 5.78 × 10(-6)±6.0 × 10(-8) μg/h, and 4.27 × 10(-7)±4.0 × 10(-9) μg/h, respectively. The distinct responses of TPP-TMAE to CO2 generated from cancer cells and normal cells suggested TPP-TMAE as a useful tool for deeper understanding metabolism process and distinguishing cancer cells from normal cells during the early diagnosis of cancers. PMID:27372422

  14. Prognostic significance of several histological features in intermediate and high-risk endometrial cancer patients treated with curative intent using surgery and adjuvant radiotherapy

    International Nuclear Information System (INIS)

    Full text: The purpose of the present study was to explore the prognostic significance of several histological features with respect to lymph node metastasis, failure-free survival (FeS), and overall survival (Os) in intermediate and high-risk endometrial cancer patients treated with curative intent. One hundred and eighty patients with endometrial cancer were treated with hysterectomy with or without lymphadenectomy and received external beam radiotherapy (EBRT). The mean follow-up period was 4.25 years (range 0.44-10.45 years). In multifactor analysis, fractional myometrial invasion (MI) (P = 0.047), histology (P < 0.001) and lymph-vascular space invasion (LVSI) (P = 0.025) were significant predictors for FFS when nodal status was not included. When lymph node status was known, histology (P - 0.007) and LVSI (P = 0.014) remained significant factors for FFS. For OS, histology (P < 0.001) and fractional MI (P = 0.004) were the significant factors. Lymph node status could be predicted by tumour grading (P = 0.016) and absolute MI (P 0.002). Histology type and the presence of LVSI were the most important prognostic factors in high-risk endometrial cancer patients treated by surgery and postoperative radiotherapy. Absolute MI and tumour grading were useful predictors of nodal spread.

  15. Elevated mammaglobin (h-MAM) expression in breast cancer is associated with clinical and biological features defining a less aggressive tumour phenotype

    International Nuclear Information System (INIS)

    Mammaglobin (h-MAM) is expressed mainly by breast epithelial cells, and this feature has been used to detect circulating breast cancer cells and occult metastases in sentinel axillary lymph nodes of breast cancer patients. However, the biological role of mammaglobin is completely unknown. We studied 128 fresh-frozen breast cancer specimens by means of reverse transcriptase–polymerase chain reaction and quantified their h-MAM mRNA expression. This was then correlated with histological and nuclear grade, oestrogen and progesterone receptor expression, c-erb-B2 and mutant p53 expression, as well as with cellular proliferation measured by means of the Ki67 labelling index, DNA ploidy and S-phase, and finally with the presence or not of invaded axillary nodes in the mastectomy specimen. In the univariate analysis, high h-MAM expression (above the median for the whole group) correlated significantly (P < 0.05) with oestrogen and progesterone receptor expression, diploid DNA content, low Ki67 labelling index, low nuclear grade and almost significantly (P = 0.058) with the absence of axillary nodal invasion in the mastectomy specimen. In a final, multivariate model, only progesterone receptor expression, diploid DNA content and absence of nodal invasion were found to be independently associated with high h-MAM expression. All of the features associated with mammaglobin expression reflect, without exception, a less aggressive tumour phenotype. Further studies are needed to clarify whether this is attributable to h-MAM expression itself, or to another mechanism of which mammaglobin expression forms part

  16. Early breast cancer detection with digital mammograms using Haar-like features and AdaBoost algorithm

    Science.gov (United States)

    Zheng, Yufeng; Yang, Clifford; Merkulov, Alex; Bandari, Malavika

    2016-05-01

    The current computer-aided detection (CAD) methods are not sufficiently accurate in detecting masses, especially in dense breasts and/or small masses (typically at their early stages). A small mass may not be perceived when it is small and/or homogeneous with surrounding tissues. Possible reasons for the limited performance of existing CAD methods are lack of multiscale analysis and unification of variant masses. The speed of CAD analysis is important for field applications. We propose a new CAD model for mass detection, which extracts simple Haar-like features for fast detection, uses AdaBoost approach for feature selection and classifier training, applies cascading classifiers for reduction of false positives, and utilizes multiscale detection for variant sizes of masses. In addition to Haar features, local binary pattern (LBP) and histograms of oriented gradient (HOG) are extracted and applied to mass detection. The performance of a CAD system can be measured with true positive rate (TPR) and false positives per image (FPI). We are collecting our own digital mammograms for the proposed research. The proposed CAD model will be initially demonstrated with mass detection including architecture distortion.

  17. Biological Characteristics and Medical Treatment of Breast Cancer in Young Women-A Featured Population: Results from the Nora Study

    International Nuclear Information System (INIS)

    Background. The present paper described the biological characteristics and clinical behavior of young women in the cohort NORA study Patients and Methods. From 2000-2002, patients (N>3500) were enrolled at 77 Italian hospitals. Women aged =50 years (N=1013) were stratified into age groups (=35, 36-40, 41-45, and 46-50 years). The relationship between age and patient characteristics, cancer presentation, and treatment was analyzed. Results. Younger women more frequently had tumors with ER/PgR-negative(x2=7.07; P=.008), HER2 amplification (x2=5.76; P=.01), and high (≤10%) Ki67 labelling index (x2=9.53; P=.002). Positive nodal status, large tumors, and elevated Ki67 all associated with the choice for chemotherapy followed by endocrine therapy in hormone receptor-positive patients (P40 versus =40, P<.0001, resp.). At multivariate analysis, after adjustment for significant clinical and pathological factors, age remains a significant prognostic variable (HR=0.93, P=.0021). Conclusion. This cohort study suggests that age per se is an important prognostic factor. The restricted role of early diagnosis and the aggressive behavior of cancer in this population make necessary the application of targeted medical strategies crucial. human epidermal growth factor receptor

  18. Clinical features of Hispanic thyroid cancer cases and the role of known genetic variants on disease risk

    Science.gov (United States)

    Estrada-Florez, Ana P.; Bohórquez, Mabel E.; Sahasrabudhe, Ruta; Prieto, Rodrigo; Lott, Paul; Duque, Carlos S.; Donado, Jorge; Mateus, Gilbert; Bolaños, Fernando; Vélez, Alejandro; Echeverry, Magdalena; Carvajal-Carmona, Luis G.

    2016-01-01

    Abstract Thyroid cancer (TC) is the second most common cancer among Hispanic women. Recent genome-wide association (GWA) and candidate studies identified 6 single nucleotide polymorphisms (SNPs; rs966423, rs2439302, rs965513, rs6983267, rs944289, and rs116909374), associated with increased TC risk in Europeans but their effects on disease risk have not been comprehensively tested in Hispanics. In this study, we aimed to describe the main clinicopathological manifestations and to evaluate the effects of known SNPs on TC risk and on clinicopathological manifestations in a Hispanic population. We analyzed 281 nonmedullary TC cases and 1146 cancer-free controls recruited in a multicenter population-based study in Colombia. SNPs were genotyped by Kompetitive allele specific polymerase chain reaction (KASP) technique. Association between genetic variants and TC risk was assessed by computing odds ratios (OR) and confidence intervals (CIs). Consistent with published data in U.S. Hispanics, our cases had a high prevalence of large tumors (>2 cm, 43%) and a high female/male ratio (5:1). We detected significant associations between TC risk and rs965513A (OR = 1.41), rs944289T (OR = 1.26), rs116909374A (OR = 1.96), rs2439302G (OR = 1.19), and rs6983267G (OR = 1.18). Cases carried more risk alleles than controls (5.16 vs. 4.78, P = 4.8 × 10−6). Individuals with ≥6 risk alleles had >6-fold increased TC risk (OR = 6.33, P = 4.0 × 10−6) compared to individuals with ≤2 risk alleles. rs944289T and rs116909374A were strongly associated with follicular histology (ORs = 1.61 and 3.33, respectively); rs2439302G with large tumors (OR = 1.50); and rs965513A with regional disease (OR = 1.92). To our knowledge, this is the first study of known TC risk variants in South American Hispanics and suggests that they increase TC susceptibility in this population and can identify patients at higher risk of severe disease. PMID

  19. Clinical features of Hispanic thyroid cancer cases and the role of known genetic variants on disease risk.

    Science.gov (United States)

    Estrada-Florez, Ana P; Bohórquez, Mabel E; Sahasrabudhe, Ruta; Prieto, Rodrigo; Lott, Paul; Duque, Carlos S; Donado, Jorge; Mateus, Gilbert; Bolaños, Fernando; Vélez, Alejandro; Echeverry, Magdalena; Carvajal-Carmona, Luis G

    2016-08-01

    Thyroid cancer (TC) is the second most common cancer among Hispanic women. Recent genome-wide association (GWA) and candidate studies identified 6 single nucleotide polymorphisms (SNPs; rs966423, rs2439302, rs965513, rs6983267, rs944289, and rs116909374), associated with increased TC risk in Europeans but their effects on disease risk have not been comprehensively tested in Hispanics. In this study, we aimed to describe the main clinicopathological manifestations and to evaluate the effects of known SNPs on TC risk and on clinicopathological manifestations in a Hispanic population.We analyzed 281 nonmedullary TC cases and 1146 cancer-free controls recruited in a multicenter population-based study in Colombia. SNPs were genotyped by Kompetitive allele specific polymerase chain reaction (KASP) technique. Association between genetic variants and TC risk was assessed by computing odds ratios (OR) and confidence intervals (CIs).Consistent with published data in U.S. Hispanics, our cases had a high prevalence of large tumors (>2 cm, 43%) and a high female/male ratio (5:1). We detected significant associations between TC risk and rs965513A (OR = 1.41), rs944289T (OR = 1.26), rs116909374A (OR = 1.96), rs2439302G (OR = 1.19), and rs6983267G (OR = 1.18). Cases carried more risk alleles than controls (5.16 vs. 4.78, P = 4.8 × 10). Individuals with ≥6 risk alleles had >6-fold increased TC risk (OR = 6.33, P = 4.0 × 10) compared to individuals with ≤2 risk alleles. rs944289T and rs116909374A were strongly associated with follicular histology (ORs = 1.61 and 3.33, respectively); rs2439302G with large tumors (OR = 1.50); and rs965513A with regional disease (OR = 1.92).To our knowledge, this is the first study of known TC risk variants in South American Hispanics and suggests that they increase TC susceptibility in this population and can identify patients at higher risk of severe disease. PMID:27512836

  20. Inhibition of glucose turnover by 3-bromopyruvate counteracts pancreatic cancer stem cell features and sensitizes cells to gemcitabine.

    Science.gov (United States)

    Isayev, Orkhan; Rausch, Vanessa; Bauer, Nathalie; Liu, Li; Fan, Pei; Zhang, Yiyao; Gladkich, Jury; Nwaeburu, Clifford C; Mattern, Jürgen; Mollenhauer, Martin; Rückert, Felix; Zach, Sebastian; Haberkorn, Uwe; Gross, Wolfgang; Schönsiegel, Frank; Bazhin, Alexandr V; Herr, Ingrid

    2014-07-15

    According to the cancer stem cell (CSC) hypothesis, the aggressive growth and early metastasis of pancreatic ductal adenocarcinoma (PDA) is due to the activity of CSCs, which are not targeted by current therapies. Otto Warburg suggested that the growth of cancer cells is driven by a high glucose metabolism. Here, we investigated whether glycolysis inhibition targets CSCs and thus may enhance therapeutic efficacy. Four established and 3 primary PDA cell lines, non-malignant cells, and 3 patient-tumor-derived CSC-enriched spheroidal cultures were analyzed by glucose turnover measurements, MTT and ATP assays, flow cytometry of ALDH1 activity and annexin positivity, colony and spheroid formation, western blotting, electrophoretic mobility shift assay, xenotransplantation, and immunohistochemistry. The effect of siRNA-mediated inhibition of LDH-A and LDH-B was also investigated. The PDA cells exhibited a high glucose metabolism, and glucose withdrawal or LDH inhibition by siRNA prevented growth and colony formation. Treatment with the anti-glycolytic agent 3-bromopyruvate almost completely blocked cell viability, self-renewal potential, NF-κB binding activity, and stem cell-related signaling and reverted gemcitabine resistance. 3-bromopyruvate was less effective in weakly malignant PDA cells and did not affect non-malignant cells, predicting minimal side effects. 3-bromopyruvate inhibited in vivo tumor engraftment and growth on chicken eggs and mice and enhanced the efficacy of gemcitabine by influencing the expression of markers of proliferation, apoptosis, self-renewal, and metastasis. Most importantly, primary CSC-enriched spheroidal cultures were eliminated by 3-bromopyruvate. These findings propose that CSCs may be specifically dependent on a high glucose turnover and suggest 3-bromopyruvate for therapeutic intervention. PMID:25015789

  1. Staining Features of GCDFP-15, ALA, CK7, CK20 and in Primary and Metastatic Breast Cancers

    OpenAIRE

    Mehtat ÜNLÜ; Canda, Tülay; Ali SEVİNÇ; Ömer HARMANCIOĞLU; Saydam, Serdar; Mehmet Ali KOÇDOR; Görken, İlknur Bilkay

    2009-01-01

    Objective: The purpose of this study was to investigate the value of GCDFP-15, ALA, CK7 and CK20 in the diagnosis and differential diagnosis of primary breast carcinoma and breast carcinoma metastases.Material and Method: Tissues from 84 primary female breast carcinomas, 36 breast carcinoma metastases, 11 primary breast carcinomas and their metastases, and 10 primary male breast carcinomas were stained for GCDFP-15, ALA, CK7 and CK20 and the staining features were analyzed.Results: GCDFP-15 w...

  2. The differences in ultrasound and clinicopathological features between basal-like and normal-like subtypes of triple negative breast cancer.

    Directory of Open Access Journals (Sweden)

    Ziyao Li

    Full Text Available The aim of this study was to identify the ultrasound features and clinicopathological characteristics of basal-like subtype of triple negative breast cancers (TNBCs.This study was approved by the ethical board of the Second Affiliated Hospital of Harbin Medical University. The patients' clinicopathological information was available. The ultrasound features of 62 tumors from 62 TNBC patients were interpreted. The immunohistochemical results of cytokertain5/6 (CK5/6 and Epidermal Growth Factor Receptor (EGFR were used to classify the tumor into basal-like and normal-like groups. The association of the ultrasound features interpreted by experienced ultrasound doctors with the immunohistochemical classification was studied.Of the 62 TNBC cases, 42 (67.7% exhibited the basal-like phenotype and 20 (32.3% exhibited the normal-like phenotype based on the immunohistochemical CK5/6 and EGFR markers. Of all the tumors, 90.3% were invasive carcinomas. The basal-like tumors were significantly associated with a maximum diameter on ultrasound of more than 20 mm (36, 85.7% (P = 0.0014. The normal-like tumors usually exhibited lateral shadows (15, 75% (P = 0.0115 as well as microlobulated margins (12, 60% (P = 0.0204 compared to the basal-like subtype. Other ultrasound features showed no significant differences between the two groups.Although ultrasound cannot yet be used to differentiate between the basal-like subtype and normal-like subtype of TNBC, ultrasound can be used to provide some useful information to the clinicians.

  3. SPECIFIC FEATURE OF HORMONAL PROFILE IN PATIENTS WITH PRIMARY AND RECURRENT BREAST CANCER AND THEIR ROLE IN THE EFFICIENCY OF CHEMOTHERAPY

    Directory of Open Access Journals (Sweden)

    M. B. Kozlova

    2009-01-01

    Full Text Available The hormonal background was studied in 32 menopausal patients who had primary breast cancer (Stage III or its recurrence in the postoperative scar. The patients with the primary process, unlike those with a recurrence, were found to have increased adrenocortical cortisol-forming activity and changed thyroid homeostasis. In both types of the neoplastic process, the blood concentrations of estradi- ol, testosterone, prolactin, follicle-stimulating and luteinizing hormones were disturbed in a substantial number of cases; the distinc- tive feature of the primary process and its recurrence lies in the opposite direction. An association of individual differences in the con- centrations of estradiol and testosterone with the efficiency of neoadjuvant chemotherapy was analyzed in patients with recurrent can- cer.

  4. The Silencing of CCND2 by Promoter Aberrant Methylation in Renal Cell Cancer and Analysis of the Correlation between CCND2 Methylation Status and Clinical Features.

    Science.gov (United States)

    Wang, Lu; Cui, Yun; Zhang, Lian; Sheng, Jindong; Yang, Yang; Kuang, Guanyu; Fan, Yu; Zhang, Qian; Jin, Jie

    2016-01-01

    Cyclin D2 (CCND2) is a member of the D-type cyclins, which plays a pivotal role in cell cycle regulation, differentiation and malignant transformation. However, its expression status and relative regulation mechanism remains unclear in renal cell cancer (RCC). In our study, the mRNA expression level of CCND2 is down-regulated in 22/23 paired RCC tissues (pTSA restored CCND2 expression in several methylated RCC cell lines. Among the 102 RCC tumors, methylation of CCND2 was detected in 29/102 (28%) cases. Only 2/23 (8.7%) adjacent non-malignant tissues showed methylation. We then analyzed the correlation of clinical features and its promoter methylation. Collectively, our data suggested that loss of CCND2 expression is closely associated with the promoter aberrant methylation. PMID:27583477

  5. Hypermethylation of E-Cadherin and Estrogen Receptor-a Gene Promoter and Its Association with Clinicopathological Features of Breast Cancer in Iranian Patients

    Directory of Open Access Journals (Sweden)

    Mozhgan Rasti

    2009-06-01

    Full Text Available Background: Aberrant methylation of cytosine-guanine dinucleotideislands leads to inactivation of tumor suppressorgenes in breast cancer. Tumor suppressor genes are unmethylatedin normal tissue and often become hypermethylatedduring tumor formation, leading to gene silencing. We investigatedthe association between E-cadherin (CDH1 and estrogenreceptor-α (ESRα gene promoter methylation andmajor clinical and pathological features of breast cancer inIranian women.Methods: DNA was extracted from 67 primary breast tumorsand gene promoter methylation was analyzed by methylationspecificpolymerase chain reaction method.Results: Fifty percent of the samples showed aberrant methylationin at least one of the two tested loci. We detectedCDH1 hypermethylation in 41% of invasive tumors and receptor-α gene hypermethylation in 18% of invasive tumorsamples. We found no association between CDH1 and receptor-α gene hypermethylation (P=0.45. There was a correlationbetween hypermethylation of CDH1 locus and tumorsize ≥5 cm (P=0.019.Conclusion: Our data suggest that the malignant progressionof human ductal and lobular breast carcinoma in Iranianwomen involves a heterogeneous pattern of cytosine-guaninedinucleotide island hypermethylation of the CDH1 gene.

  6. Analysis of normal-tumour tissue interaction in tumours: prediction of prostate cancer features from the molecular profile of adjacent normal cells.

    Directory of Open Access Journals (Sweden)

    Victor Trevino

    Full Text Available Statistical modelling, in combination with genome-wide expression profiling techniques, has demonstrated that the molecular state of the tumour is sufficient to infer its pathological state. These studies have been extremely important in diagnostics and have contributed to improving our understanding of tumour biology. However, their importance in in-depth understanding of cancer patho-physiology may be limited since they do not explicitly take into consideration the fundamental role of the tissue microenvironment in specifying tumour physiology. Because of the importance of normal cells in shaping the tissue microenvironment we formulate the hypothesis that molecular components of the profile of normal epithelial cells adjacent the tumour are predictive of tumour physiology. We addressed this hypothesis by developing statistical models that link gene expression profiles representing the molecular state of adjacent normal epithelial cells to tumour features in prostate cancer. Furthermore, network analysis showed that predictive genes are linked to the activity of important secreted factors, which have the potential to influence tumor biology, such as IL1, IGF1, PDGF BB, AGT, and TGFβ.

  7. Estimation of local spectrum content of cervical cancer-related features via two dimensional method of geometric restriction in frequency domain

    International Nuclear Information System (INIS)

    Digital colposcopy is an emerging new technology, which can be used as adjunct to the conventional Pap test for staging of cervical cancer and it can improve the diagnostic accuracy of the test. Computer aided diagnosis (CAD) in digital colposcopy has as a goal to segment and outline abnormal areas on the cervix, one of which is an important anatomical landmark on the ectocervix - the transformation zone (TZ). In this paper we proposed a new method for estimation of the local spectrum features of cervical cancer in vivo. We used a 2D method to estimate the energy of the local frequency bands, using a geometric restriction (GR). In the current work we reported up to 12 dB difference between the local power spectral density content of the region of interest (ROI) and (ROI)C for the mid-frequency band. We devised a method to present pseudo-color visual maps of the cervical images, useful for CAD and successful ROI segmentation. (author)

  8. Staging primary breast cancer. Are there tumour pathological features that correlate with a false-negative axillary ultrasound?

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, S., E-mail: sarahjljohnson@gmail.co [Peninsula Radiology Academy, Plymouth International Business Park, Plymouth (United Kingdom); Brown, S.; Porter, G.; Steel, J.; Paisley, K.; Watkins, R.; Holgate, C. [Peninsula Radiology Academy, Plymouth International Business Park, Plymouth (United Kingdom)

    2011-06-15

    Aim: To investigate whether the histopathological characteristics of primary breast cancer tumours could predict the likelihood of false-negative axillary ultrasound. Materials and methods: Screening and symptomatic patients were identified from pathology records and imaging and pathology records reviewed. True and false-negative axillary staging ultrasound groups were compared statistically in terms of tumour size, pathological type and grade, lymphovascular invasion, and oestrogen receptor (ER) status. Results: Of 155 women with normal ultrasounds, 45 (29%) were node positive at axillary surgery. Breast tumour size was significantly different with the average size smaller in the true-negative group: 21 versus 30 mm (p < 0.02). The histological type varied significantly between the groups, with more lobular carcinomas in the false-negative group [6/110 (5%) versus 6/45 (13%), p < 0.001]. The false-negative group was also more likely to show lymphovascular invasion in the breast [6/110 (5%) versus 14/45 (31%), p < 0.001]. There was no significant difference in tumour grade or ER status. Conclusion: The present study has found significant differences in tumour characteristics between women with true-negative and false-negative axillary staging ultrasound in terms of size, primary tumour histological type and presence of lymphovascular invasion. In particular, axillary ultrasound in primary lobular carcinoma may be less accurate and a negative result is more likely to be spurious than with primary ductal carcinomas.

  9. Features a combined surgical treatment in preserving the quality of life in patients with invasive colorectal cancer

    Directory of Open Access Journals (Sweden)

    S. B. Abduzhapparov

    2016-01-01

    Full Text Available Background. The aim of the work was to study the effect of combined surgical treatment of locally advanced rectal cancer (RC with the invasion of the organs of the female reproductive system on the quality of life of patients.Materials and methods. Presents the diagnosis and treatment of 134 patients with the RC in age from 21 to 70 years, with the invasion of the organs of the female reproductive system. All patients carried the standard clinical and laboratory tests.Results. Half of the patients (50.7 % of cases T4N1M0 stage of the disease has been diagnosed. In 75 (56.0 % patients with tumor spread into the vagina, and in 16 (11.9 % patients – just a few of the reproductive system. In the study group of 64 patients with the RC, along with surgery on the rectum, combined organ-performed surgery reproductive organs. In the control group all 70 patients was performed hysterectomy with appendages.Conclusions. Quality of life according to the questionnaire MENQOL, was significantly higher in patients with organ-treatment, which showed a decrease in vasomotor and psychological symptoms, as well as smoothing of irregularities in the physical and sexual spheres. Studies have show the validity of the widespread introduction in the oncological practice combined simultaneous operations that preserve the reproductive organs in women with invasive RC, which is especially important for women of reproductive age.

  10. Is active surveillance a safe alternative in the management of localized prostate cancer? Pathological features of radical prostatectomy specimens in potential candidates for active surveillance

    Directory of Open Access Journals (Sweden)

    Zambrano Norman

    2014-04-01

    Full Text Available Introduction and objectiveActive surveillance (AS has become an accepted alternative for patients with low risk prostate cancer. The purpose of AS is to defer definitive therapy in these patients to avoid treatment-related complications. Our aim was to determine the pathological features of the surgical specimen from potential AS candidates that underwent radical prostatectomy (RP.Materials and MethodsWe retrospectively reviewed a group of patients submitted to RP who met criteria for AS: Gleason score (GS ≤ 3+3 = 6, PSA ≤ 10ng/mL, T1c - T2a, 6 in the RPS (GS 7 n = 49; GS 8 n = 3. Extracapsular extension, seminal vesicle and lymph node involvement was found in 6.1%, 3.1% and 1.2% of the specimens, respectively.ConclusionIn this study a significant proportion of potential candidates for AS showed features of aggressive and/or high-risk tumors in the RPS. Therefore, before considering a patient for an AS protocol, a proper and strict selection must be performed, and informed consent is crucial for these patients.

  11. Histopathologic features of esophageal glands in the region of the gastroesophageal junction in Chinese patients with gastric cardiac cancer involving the esophagus

    Directory of Open Access Journals (Sweden)

    Qin Huang

    2010-05-01

    Full Text Available Qin Huang1,2,3, Lihua Zhang11Department of Pathology of the Nanjing Drum Tower Hospital, Nanjing, China; 2Department of Pathology and Laboratory Medicine, Veterans Affairs, Boston Healthcare System, West Roxbury, MA, USA; 3Harvard Medical School, Boston, MA, USAAbstract: Esophageal glands (EGs were implicated previously as a potential origin of carcinomas of the gastroesophageal junction (GEJ. The studies of histopathology on diseases in EGs, however, are scarce. In the present study, we systematically investigated EGs in 36 resection cases of gastric cardiac carcinomas involving the esophagus (GCE in Chinese patients. All cases showed chronic inflammation in EGs and 14 (39% with Helicobacter pylori infection. Hyperplasia, atrophy, and dysplasia were common in EGs and observed in 21 (58%, 14 (39%, and 28 (78% cases, respectively. These changes were associated with various types of metaplasia, including intestinal (6, 17%, oncocytic (26, 72%, pancreatic acinar (11, 30%, and squamoid metaplasia (8, 22%. Oncocytic metaplasia was patchy, frequently replaced the entire lobule with dysplastic features. Pancreatic acinar metaplasia was present in superficial EGs as small acinar patches. Squamoid metaplasia was limited to the EG drainage ductile epithelium without keratin pearls or intercellular bridges; however, cytoplasmic vesicles and secretory vacuoles were common, suggesting dual differentiation. Dysplastic EGs featured architectural disarray with fused acini, cribriforming, abortive growth, and nuclear hyperchromasia, enlargement, and overlapping. The results demonstrate a spectrum of histopathologic changes in EGs and ductile epithelium, which is similar to those observed in GCE in Chinese patients.Keywords: esophageal glands, esophagus, stomach, cancer, Chinese

  12. Annual report to the nation on the status of cancer, 1975-2006, featuring colorectal cancer trends and impact of interventions (risk factors, screening, and treatment) to reduce future rates

    NARCIS (Netherlands)

    B.K. Edwards (Brenda); E. Ward (Elizabeth); B.A. Kohler (Betsy); C. Eheman (Christie); A. Zauber (Ann); R.N. Anderson (Robert); A. Jemal (Ahmedin); M.J. Schymura (Maria); I. Lansdorp-Vogelaar (Iris); L.C. Seeff (Laura); M. van Ballegooijen (Marjolein); S.L. Goede (Luuk); L.A.G. Ries (Lynn)

    2010-01-01

    textabstractBACKGROUND. The American Cancer Society, the Centers for Disease Control and Prevention (CDC), the National Cancer Institute (NCI), and the North American Association of Central Cancer Registries (NAACCR) collaborate annually to provide updated information regarding cancer occurrence and

  13. Câncer ano-reto-cólico - aspectos atuais: I - câncer anal Anal canal and colorectal cancer - current features: I - anal canal cancer

    Directory of Open Access Journals (Sweden)

    Júlio César M. Santos Jr.

    2007-06-01

    Full Text Available A inclusão do tema - câncer anal - nessa revisão, apesar de sua relativa raridade, responde, em parte, ao propósito de chamar atenção para o significativo aumento dessa lesão e sua estreita relação com doenças sexualmente transmissíveis, principalmente causadas pelo vírus do papiloma humano (HPV; seus aspectos nosológicos, sua epidemiologia, sua etiologia multifatorial, seus fatores de riscos, sua prevenção e, em parte, para revelar a definição atual do tratamento.The inclusion of the theme - anal cancer - in this revision, in spite of its relative rarity, it answers, partly, to the purpose of calling attention for the significant increase of that lesion and its narrow relationship with sexually transmissible diseases mainly caused by the human papilloma virus (HPV; its nosologic aspects, epidemiology, etiology, and the multifactorial nature of risk that is associated to the disease, its prevention, and, partly, to reveal the current definition of the treatment.

  14. Rad51c- and Trp53-double-mutant mouse model reveals common features of homologous recombination-deficient breast cancers.

    Science.gov (United States)

    Tumiati, M; Munne, P M; Edgren, H; Eldfors, S; Hemmes, A; Kuznetsov, S G

    2016-09-01

    Almost half of all hereditary breast cancers (BCs) are associated with germ-line mutations in homologous recombination (HR) genes. However, the tumor phenotypes associated with different HR genes vary, making it difficult to define the role of HR in BC predisposition. To distinguish between HR-dependent and -independent features of BCs, we generated a mouse model in which an essential HR gene, Rad51c, is knocked-out specifically in epidermal tissues. Rad51c is one of the key mediators of HR and a well-known BC predisposition gene. Here, we demonstrate that deletion of Rad51c invariably requires inactivation of the Trp53 tumor suppressor (TP53 in humans) to produce mammary carcinomas in 63% of female mice. Nonetheless, loss of Rad51c shortens the latency of Trp53-deficient mouse tumors from 11 to 6 months. Remarkably, the histopathological features of Rad51c-deficient mammary carcinomas, such as expression of hormone receptors and luminal epithelial markers, faithfully recapitulate the histopathology of human RAD51C-mutated BCs. Similar to other BC models, Rad51c/p53 double-mutant mouse mammary tumors also reveal a propensity for genomic instability, but lack the focal amplification of the Met locus or distinct mutational signatures reported for other HR genes. Using the human mammary epithelial cell line MCF10A, we show that deletion of TP53 can rescue RAD51C-deficient cells from radiation-induced cellular senescence, whereas it exacerbates their centrosome amplification and nuclear abnormalities. Altogether, our data indicate that a trend for genomic instability and inactivation of Trp53 are common features of HR-mediated BCs, whereas histopathology and somatic mutation patterns are specific for different HR genes. PMID:26820992

  15. Comparison of Clinicopathological Features and Treatments between Young (≤40 Years) and Older (>40 Years) Female Breast Cancer Patients in West China: A Retrospective, Epidemiological, Multicenter, Case Only Study

    Science.gov (United States)

    Li, Hongyuan; Zheng, Ke; Jiang, Jun; Zou, Tianning; Ma, Binlin; Li, Hui; Liu, Qilun; Ou, Jianghua; Wang, Ling; Wei, Wei; He, Jianjun; Ren, Guosheng

    2016-01-01

    The incidence of young cases of breast cancer is higher in China compared to the western world. We aimed to explore differences in risk factors, clinicopathological features and treatment modes of young female breast cancer compared to older patients in West China. We collected clinical information from 12,209 female breast cancer patients in West China, including risk factors, clinicopathological features and treatment modes, from January 2010 to December 2012. Chi-square tests and the multivariate logistic regression analysis were applied for statistical analysis. There were 2,682 young (≤40 years) cases and 9,527 older cases at the time of breast cancer diagnosis. Young patients had a greater tumor diameter at diagnosis, and a higher probability of axillary lymph node and distant metastasis (P menarche was earlier, they had lower marriage rates, fewer pregnancies and births, and a lower breastfeeding rate (P 40 years) female breast cancer patients in West China. As some of these results differ from those found in the western female population, it is likely that the mechanism of tumorigenesis of young female breast cancer patients in West China may differ from that in western developed countries. Further investigation into the regional differences in breast cancer tumorigenesis is warranted. PMID:27031236

  16. Comparison of Clinicopathological Features and Treatments between Young (≤40 Years and Older (>40 Years Female Breast Cancer Patients in West China: A Retrospective, Epidemiological, Multicenter, Case Only Study.

    Directory of Open Access Journals (Sweden)

    Ke Wang

    Full Text Available The incidence of young cases of breast cancer is higher in China compared to the western world. We aimed to explore differences in risk factors, clinicopathological features and treatment modes of young female breast cancer compared to older patients in West China. We collected clinical information from 12,209 female breast cancer patients in West China, including risk factors, clinicopathological features and treatment modes, from January 2010 to December 2012. Chi-square tests and the multivariate logistic regression analysis were applied for statistical analysis. There were 2,682 young (≤40 years cases and 9,527 older cases at the time of breast cancer diagnosis. Young patients had a greater tumor diameter at diagnosis, and a higher probability of axillary lymph node and distant metastasis (P 40 years female breast cancer patients in West China. As some of these results differ from those found in the western female population, it is likely that the mechanism of tumorigenesis of young female breast cancer patients in West China may differ from that in western developed countries. Further investigation into the regional differences in breast cancer tumorigenesis is warranted.

  17. Comparison of Clinicopathological Features and Treatments between Young (≤40 Years) and Older (>40 Years) Female Breast Cancer Patients in West China: A Retrospective, Epidemiological, Multicenter, Case Only Study.

    Science.gov (United States)

    Wang, Ke; Ren, Yu; Li, Hongyuan; Zheng, Ke; Jiang, Jun; Zou, Tianning; Ma, Binlin; Li, Hui; Liu, Qilun; Ou, Jianghua; Wang, Ling; Wei, Wei; He, Jianjun; Ren, Guosheng

    2016-01-01

    The incidence of young cases of breast cancer is higher in China compared to the western world. We aimed to explore differences in risk factors, clinicopathological features and treatment modes of young female breast cancer compared to older patients in West China. We collected clinical information from 12,209 female breast cancer patients in West China, including risk factors, clinicopathological features and treatment modes, from January 2010 to December 2012. Chi-square tests and the multivariate logistic regression analysis were applied for statistical analysis. There were 2,682 young (≤40 years) cases and 9,527 older cases at the time of breast cancer diagnosis. Young patients had a greater tumor diameter at diagnosis, and a higher probability of axillary lymph node and distant metastasis (P 40 years) female breast cancer patients in West China. As some of these results differ from those found in the western female population, it is likely that the mechanism of tumorigenesis of young female breast cancer patients in West China may differ from that in western developed countries. Further investigation into the regional differences in breast cancer tumorigenesis is warranted.

  18. Superior cervical ganglion mimicking retropharyngeal adenopathy in head and neck cancer patients: MRI features with anatomic, histologic, and surgical correlation

    Energy Technology Data Exchange (ETDEWEB)

    Loke, S.C.; Karandikar, A.; Goh, J.P.N. [Tan Tock Seng Hospital, Department of Diagnostic Radiology, Singapore (Singapore); Ravanelli, M.; Farina, D.; Maroldi, R. [Department of Radiology, University of Brescia, Brescia (Italy); Ling, E.A. [National University of Singapore, Department of Anatomy, Yong Loo Lin School of Medicine, Singapore (Singapore); Tan, T.Y. [Changi General Hospital, Department of Radiology, Singapore (Singapore)

    2016-01-15

    To describe the unique MRI findings of superior cervical ganglia (SCG) that may help differentiate them from retropharyngeal lymph nodes (RPLNs). A retrospective review of post-treatment NPC patients from 1999 to 2012 identified three patients previously irradiated for NPC that were suspected of having recurrent nodal disease in retropharyngeal lymph nodes during surveillance MRI. Subsequent surgical exploration revealed enlarged SCG only; no retropharyngeal nodal disease was found. A cadaveric head specimen was also imaged with a 3T MRI before and after dissection. In addition, SCG were also harvested from three cadaveric specimens and subjected to histologic analysis. The SCG were found at the level of the C2 vertebral body, medial to the ICA. They were ovoid on axial images and fusiform and elongated with tapered margins in the coronal plane. T2-weighted (T2W) signal was hyperintense. No central elevated T1-weighted (T1W) signal was seen within the ganglia in non-fat-saturated sequences to suggest the presence of a fatty hilum. Enhancement after gadolinium was present. A central ''black dot'' was seen on axial T2W and post-contrast images in two of the three SCG demonstrated. Histology showed the central black line was comprised of venules and interlacing neurites within the central portion of the ganglion. The SCG can be mistaken for enlarged RPLNs in post-treatment NPC patients. However, there are features which can help differentiate them from RPLNs, preventing unnecessary therapy. These imaging findings have not been previously described. (orig.)

  19. Cancer

    Science.gov (United States)

    ... Blood tests (which look for chemicals such as tumor markers) Bone marrow biopsy (for lymphoma or leukemia) Chest ... the case with skin cancers , as well as cancers of the lung, breast, and colon. If the tumor has spread ...

  20. Cancer

    Science.gov (United States)

    Cancer begins in your cells, which are the building blocks of your body. Normally, your body forms ... be benign or malignant. Benign tumors aren't cancer while malignant ones are. Cells from malignant tumors ...

  1. Prostate cancer - treatment

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000403.htm Prostate cancer - treatment To use the sharing features on this ... a combination of drugs is recommended. References National Cancer Institute. Prostate cancer treatment (PDQ): Stages of prostate cancer. Updated ...

  2. Prostate Cancer Research Trial Helps John Spencer Treat His Cancer

    Science.gov (United States)

    ... this page please turn Javascript on. Feature: Prostate Cancer Prostate Cancer Research Trial Helps John Spencer Treat His ... Read More "Prostate Cancer" Articles Progress Against Prostate Cancer / Prostate Cancer Research Trial Helps John Spencer Treat His ...

  3. SU-E-J-256: Predicting Metastasis-Free Survival of Rectal Cancer Patients Treated with Neoadjuvant Chemo-Radiotherapy by Data-Mining of CT Texture Features of Primary Lesions

    International Nuclear Information System (INIS)

    Purpose: The purpose of this study is to investigate the relationship between computed tomographic (CT) texture features of primary lesions and metastasis-free survival for rectal cancer patients; and to develop a datamining prediction model using texture features. Methods: A total of 220 rectal cancer patients treated with neoadjuvant chemo-radiotherapy (CRT) were enrolled in this study. All patients underwent CT scans before CRT. The primary lesions on the CT images were delineated by two experienced oncologists. The CT images were filtered by Laplacian of Gaussian (LoG) filters with different filter values (1.0–2.5: from fine to coarse). Both filtered and unfiltered images were analyzed using Gray-level Co-occurrence Matrix (GLCM) texture analysis with different directions (transversal, sagittal, and coronal). Totally, 270 texture features with different species, directions and filter values were extracted. Texture features were examined with Student’s t-test for selecting predictive features. Principal Component Analysis (PCA) was performed upon the selected features to reduce the feature collinearity. Artificial neural network (ANN) and logistic regression were applied to establish metastasis prediction models. Results: Forty-six of 220 patients developed metastasis with a follow-up time of more than 2 years. Sixtyseven texture features were significantly different in t-test (p<0.05) between patients with and without metastasis, and 12 of them were extremely significant (p<0.001). The Area-under-the-curve (AUC) of ANN was 0.72, and the concordance index (CI) of logistic regression was 0.71. The predictability of ANN was slightly better than logistic regression. Conclusion: CT texture features of primary lesions are related to metastasisfree survival of rectal cancer patients. Both ANN and logistic regression based models can be developed for prediction

  4. SU-E-J-256: Predicting Metastasis-Free Survival of Rectal Cancer Patients Treated with Neoadjuvant Chemo-Radiotherapy by Data-Mining of CT Texture Features of Primary Lesions

    Energy Technology Data Exchange (ETDEWEB)

    Zhong, H; Wang, J; Shen, L; Hu, W; Wan, J; Zhou, Z; Zhang, Z [Fudan University Shanghai Cancer Center, Shanghai (China)

    2015-06-15

    Purpose: The purpose of this study is to investigate the relationship between computed tomographic (CT) texture features of primary lesions and metastasis-free survival for rectal cancer patients; and to develop a datamining prediction model using texture features. Methods: A total of 220 rectal cancer patients treated with neoadjuvant chemo-radiotherapy (CRT) were enrolled in this study. All patients underwent CT scans before CRT. The primary lesions on the CT images were delineated by two experienced oncologists. The CT images were filtered by Laplacian of Gaussian (LoG) filters with different filter values (1.0–2.5: from fine to coarse). Both filtered and unfiltered images were analyzed using Gray-level Co-occurrence Matrix (GLCM) texture analysis with different directions (transversal, sagittal, and coronal). Totally, 270 texture features with different species, directions and filter values were extracted. Texture features were examined with Student’s t-test for selecting predictive features. Principal Component Analysis (PCA) was performed upon the selected features to reduce the feature collinearity. Artificial neural network (ANN) and logistic regression were applied to establish metastasis prediction models. Results: Forty-six of 220 patients developed metastasis with a follow-up time of more than 2 years. Sixtyseven texture features were significantly different in t-test (p<0.05) between patients with and without metastasis, and 12 of them were extremely significant (p<0.001). The Area-under-the-curve (AUC) of ANN was 0.72, and the concordance index (CI) of logistic regression was 0.71. The predictability of ANN was slightly better than logistic regression. Conclusion: CT texture features of primary lesions are related to metastasisfree survival of rectal cancer patients. Both ANN and logistic regression based models can be developed for prediction.

  5. Expression of Inducible Nitric Oxide Synthase, p53 and Bcl-2 in Gastric Precancerous and Cancerous Lesions: Correlation with Clinical Features

    Institute of Scientific and Technical Information of China (English)

    Tao Cui; Zu'an Zhu; Ying Liu; Qingyan Kong; Sujuan Fei

    2006-01-01

    OBJECTIVE To explore the expression of inducible nitric oxide synthase(iNOS), p53 and bcl-2 in gastric precancerous and cancerous lesions and to examine the expression of these proteins in relation to clinical features.METHODS The expressions of iNOS, p53 and bcl-2 proteins in gastric precancerous and cancerous lesions and their correlations with the clinical features were determined using immunohistochemical assays (Power VisionTM two-step method) on 84 gastric carcinomas and 54 gastric atypical hyperplastic tissues. Apoptotic cells were evaluated by terminal deoxynucleotidyl transferase- mediated dUTP-biotin nick-end labeling (TUNEL).RESULTS Expression of iNOS, p53 and bcl-2 was significantly higher in gastric carcinoma (GC) tissues than in gastric atypical hyperplastic tissues. Among the 84 carcinomas, the expression of p53 was observed in 50 (59.52%), bcl-2 in 43 (51.19%), and iNOS in 65 (77.58%). Overexpression of iNOS and bcl-2 in gastrlc carcinoma was related to tumor size and iNOS was related to the presence of lymph node metastasis (P<0.05). The expression of proteins did not correlate with age, sex, stage of disease, or differentiation. Expression of iNOS in gastric carcinoma tissues was positively correlated with bcl-2 expression (χ2=8.926, P=0.003),and also with p53 expression (χ2= 5.2430, P= 0.022). The mean apoptotic indexes (Al) were 1.29%±0.50 in low-grade atypical hyperplasia (LG),0.96%±0.36 in high-grade atypical hyperplasia (HG) and 0.70%±0.43 in GC, with the difference being significant between LG, HG and GC (P<0.05). There was a significant positive correlation between iNOS expression and the Al in GC (t=3.0815, P=0.0028).CONCLUSION iNOS was expressed in the majority of gastric carcinoma tissues and correlated with cellular apoptosis associated with p53 and bcl-2 expression. iNOS overexpression is closely associated with p53 and bcl-2 accumulation status. iNOS may play a synergistic role in the pathogenesis of GC.

  6. The characteristics of Ishikawa endometrial cancer cells are modified by substrate topography with cell-like features and the polymer surface

    Directory of Open Access Journals (Sweden)

    Tan LH

    2015-08-01

    those on a flat pST surface. This method, which provided substrates in vitro with cell-like features, enabled the study of effects of topographies that are similar to those experienced by cells in vivo. The observations establish that such a physical environment has an effect on cancer cell behavior independent of the characteristics of the substrate. The results support the concept that the physical topography of a cell’s environment may modulate crucial oncological signaling pathways; this suggests the possibility of cancer therapies that target pathways associated with the response to mechanical stimuli. Keywords: surface characteristics, cell culture platforms, physical microenvironment, cell response, drug targets, mechanical forces

  7. Relationship between the temporal changes in positron-emission-tomography-imaging-based textural features and pathologic response and survival in esophageal cancer patients

    Directory of Open Access Journals (Sweden)

    Stephen ShingFan Yip

    2016-03-01

    Full Text Available Purpose: Although change in SUV measures and PET-based textural features during treatment have shown promise in tumor response prediction, it is unclear which quantitative measure is the most predictive. We compared the relationship between PET-based features and pathologic response and overall survival with the SUV measures in esophageal cancer. Methods: Fifty-four esophageal cancer patients received PET/CT scans before and after chemo-radiotherapy. Of these, 45 patients underwent surgery and were classified into complete, partial, and non-responders to the preoperative chemoradiation. SUVmax and SUVmean, two co-occurrence matrix (Entropy and Homogeneity, two run-length-matrix (High-gray-run-emphasis and Short-run-high-gray-run-emphasis, and two size-zone-matrix (High-gray-zone-emphasis and Short-zone-high-gray-emphasis textures were computed. The relationship between the relative difference of each measure at different treatment time points and the pathologic response and overall survival was assessed using the area under the receiver-operating-characteristic curve (AUC and Kaplan-Meier statistics respectively. Results: All Textures, except Homogeneity, were better related to pathologic response than SUVmax and SUVmean. Entropy was found to significantly distinguish non-responders from the complete (AUC=0.79, p=1.7x10^-4 and partial (AUC=0.71, p=0.01 responders. Non-responders can also be significantly differentiated from partial and complete responders by the change in the run length and size zone matrix textures (AUC=0.71‒0.76, p≤0.02. Homogeneity, SUVmax and SUVmean failed to differentiate between any of the responders (AUC=0.50‒0.57, p≥0.46. However, none of the measures were found to significantly distinguish between complete and partial responders with AUC0.25. Conclusions: For the patients studied, temporal change in Entropy and all Run length matrix were better correlated with pathological response and survival than the SUV

  8. [Cancer].

    Science.gov (United States)

    de la Peña-López, Roberto; Remolina-Bonilla, Yuly Andrea

    2016-09-01

    Cancer is a group of diseases which represents a significant public health problem in Mexico and worldwide. In Mexico neoplasms are the second leading cause of death. An increased morbidity and mortality are expected in the next decades. Several preventable risk factors for cancer development have been identified, the most relevant including tobacco use, which accounts for 30% of the cancer cases; and obesity, associated to another 30%. These factors, in turn, are related to sedentarism, alcohol abuse and imbalanced diets. Some agents are well knokn to cause cancer such as ionizing radiation, viruses such as the papilloma virus (HPV) and hepatitis virus (B and C), and more recently environmental pollution exposure and red meat consumption have been pointed out as carcinogens by the International Agency for Research in Cancer (IARC). The scientific evidence currently available is insufficient to consider milk either as a risk factor or protective factor against different types of cancer. PMID:27603890

  9. Improved visualization of breast cancer features in multifocal carcinoma using phase-contrast and dark-field mammography: an ex vivo study

    Energy Technology Data Exchange (ETDEWEB)

    Grandl, Susanne; Sztrokay-Gaul, Aniko; Auweter, Sigrid D.; Hellerhoff, Karin [Ludwig-Maximilians-University Hospital Munich, Institute of Clinical Radiology, Munich (Germany); Scherer, Kai; Birnbacher, Lorenz; Willer, Konstantin; Chabior, Michael; Herzen, Julia; Pfeiffer, Franz [Technische Universitaet Muenchen, Department of Physics and Institute of Medical Engineering, Garching (Germany); Mayr, Doris [Ludwig-Maximilians-Universitaet Muenchen, Institute of Pathology, Munich (Germany); Bamberg, Fabian [University Hospital Tuebingen, Department of Diagnostic and Interventional Radiology, Tuebingen (Germany)

    2015-12-15

    Conventional X-ray attenuation-based contrast is inherently low for the soft-tissue components of the female breast. To overcome this limitation, we investigate the diagnostic merits arising from dark-field mammography by means of certain tumour structures enclosed within freshly dissected mastectomy samples. We performed grating-based absorption, absolute phase and dark-field mammography of three freshly dissected mastectomy samples containing bi- and multifocal carcinoma using a compact, laboratory Talbot-Lau interferometer. Preoperative in vivo imaging (digital mammography, ultrasound, MRI), postoperative histopathological analysis and ex vivo digital mammograms of all samples were acquired for the diagnostic verification of our results. In the diagnosis of multifocal tumour growth, dark-field mammography seems superior to standard breast imaging modalities, providing a better resolution of small, calcified tumour nodules, demarcation of tumour boundaries with desmoplastic stromal response and spiculated soft-tissue strands extending from an invasive ductal breast cancer. On the basis of selected cases, we demonstrate that dark-field mammography is capable of outperforming conventional mammographic imaging of tumour features in both calcified and non-calcified tumours. Presuming dose optimization, our results encourage further studies on larger patient cohorts to identify those patients that will benefit the most from this promising additional imaging modality. (orig.)

  10. [Clinical and morphological features of papillary thyroid cancer in children and adolescents in the Republic of Belarus: analysis of 936 post-Chernobyl carcinomas].

    Science.gov (United States)

    Fridman, M V; Man'kovskaia, S V; Kras'ko, O V; Demidchik, Iu E

    2014-01-01

    There is presented clinical and morphological characteristics of post-Chernobyl papillary thyroid cancer in 936 children and adolescents. In general, carcinoma of these patients featured by locally advanced growth - 57.4% (387 of 674 patients with this sign could be assessed), metastases in regional lymph nodes - 73,7% (N1b in 40.7%) and internal organs - 11.1%. The mean duration of follow-up was 12,4 +/- 3,5 years (range 4.3 to 19.6 years) including children 14,6 +/- 2,7 years (range 8.8 to 19.6 years) and adolescents - 10,1 +/- 3,1 years (range 4.3 to 18.8 years). Overall survival for the 20-year period was 96,6% +/- 1,2%. The causes of death were suicide (7), injuries and accidents (5), secondary malignancies (1), somatic diseases (2). Only in two patients the death was related to the main disease - lung metastases. Free-recurrence survival for the cohort of post-Chernobyl carcinomas was 92,7% +/- 1,0%.

  11. Improved visualization of breast cancer features in multifocal carcinoma using phase-contrast and dark-field mammography: an ex vivo study

    International Nuclear Information System (INIS)

    Conventional X-ray attenuation-based contrast is inherently low for the soft-tissue components of the female breast. To overcome this limitation, we investigate the diagnostic merits arising from dark-field mammography by means of certain tumour structures enclosed within freshly dissected mastectomy samples. We performed grating-based absorption, absolute phase and dark-field mammography of three freshly dissected mastectomy samples containing bi- and multifocal carcinoma using a compact, laboratory Talbot-Lau interferometer. Preoperative in vivo imaging (digital mammography, ultrasound, MRI), postoperative histopathological analysis and ex vivo digital mammograms of all samples were acquired for the diagnostic verification of our results. In the diagnosis of multifocal tumour growth, dark-field mammography seems superior to standard breast imaging modalities, providing a better resolution of small, calcified tumour nodules, demarcation of tumour boundaries with desmoplastic stromal response and spiculated soft-tissue strands extending from an invasive ductal breast cancer. On the basis of selected cases, we demonstrate that dark-field mammography is capable of outperforming conventional mammographic imaging of tumour features in both calcified and non-calcified tumours. Presuming dose optimization, our results encourage further studies on larger patient cohorts to identify those patients that will benefit the most from this promising additional imaging modality. (orig.)

  12. Metastatic brain cancer: prediction of response to whole-brain helical tomotherapy with simultaneous intralesional boost for metastatic disease using quantitative MR imaging features

    Science.gov (United States)

    Sharma, Harish; Bauman, Glenn; Rodrigues, George; Bartha, Robert; Ward, Aaron

    2014-03-01

    The sequential application of whole brain radiotherapy (WBRT) and more targeted stereotactic radiosurgery (SRS) is frequently used to treat metastatic brain tumors. However, SRS has side effects related to necrosis and edema, and requires separate and relatively invasive localization procedures. Helical tomotherapy (HT) allows for a SRS-type simultaneous infield boost (SIB) of multiple brain metastases, synchronously with WBRT and without separate stereotactic procedures. However, some patients' tumors may not respond to HT+SIB, and would be more appropriately treated with radiosurgery or conventional surgery despite the additional risks and side effects. As a first step toward a broader objective of developing a means for response prediction to HT+SIB, the goal of this study was to investigate whether quantitative measurements of tumor size and appearance (including first- and second-order texture features) on a magnetic resonance imaging (MRI) scan acquired prior to treatment could be used to differentiate responder and nonresponder patient groups after HT+SIB treatment of metastatic disease of the brain. Our results demonstrated that smaller lesions may respond better to this form of therapy; measures of appearance provided limited added value over measures of size for response prediction. With further validation on a larger data set, this approach may lead to a means for prediction of individual patient response based on pre-treatment MRI, supporting appropriate therapy selection for patients with metastatic brain cancer.

  13. Correlativity study on mammographic features and c-erbB-2 of breast cancer%乳腺癌钼靶X线表现与c-erbB-2癌基因相关性

    Institute of Scientific and Technical Information of China (English)

    马捷; 左敏; 孙国平

    2006-01-01

    Objective: To investigate the correlativity between mammographic features and c-erbB-2 of breast cancer.Methods: The mammographic features of 165 patients,including calcification,distinct,esion concentration,breast cysitic hyperplasia accompanied,were studied comparatively with c-erbB-2 gene stained with immunohistochemical technique.Results: Of 165cases,calcification impression was 84 cases (50.91%),indistinct 80 cases (48.40%),lesions were concentrated of 87 case(52.73%),accompanied breast cysitic hyperplasia 85 cases (51.52%).Conclusion: Mammographic features of breast cancer could show the status of c-erbB-2,the positive chance is higher with calcification,indistinct,lesion concentration and accompanied breast cysitic hyperplasia.

  14. 家族性甲状腺非髓样癌临床分析%Clinical features of familial non-medullary thyroid cancer patients

    Institute of Scientific and Technical Information of China (English)

    张溪微; 安常明; 万汉锋; 张宗敏; 刘文胜; 李正江; 徐震纲; 唐平章

    2014-01-01

    目的 分析家族性甲状腺非髓样癌的临床特征.方法 收集2003年9月至2012年9月初治的家族性甲状腺非髓样癌60例作为研究组,随机抽取60例散发型甲状腺非髓样癌患者作为对照组,分析两组患者的临床资料.结果 研究组和对照组患者均为甲状腺乳头状癌.研究组患者的发病年龄为21 ~ 66岁,中位年龄42.0岁;女40例,男20例;T1期16例,T3期37例,T4期7例.对照组患者的发病年龄为24 ~ 78岁,中位年龄45.5岁;女49例,男11例.T1期25例,T2期2例,rT3期30例,T4期3例.研究组和对照组中累及甲状腺双叶者分别占43.3% (26/60)和18.3% (11/60),差异有统计学意义(P =0.003).研究组和对照组中多灶发病者分别占53.3% (32/60)和35.0% (21/60),被膜或被膜外侵犯者分别占73.3% (44/60)和55.0% (33/60),合并良性病变者分别占81.7% (49/60)和50.0% (30/60),差异均有统计学意义(均P<0.05).研究组和对照组患者的淋巴结转移率分别为60.0%(36/60)和38.3%(23/60),差异有统计学意义(P =0.018).研究组患者中亲子型32例,同胞型28例;亲子型中第一代发病中位年龄为58岁,第二代发病中位年龄为32岁,差异有统计学意义(P<0.001).结论 家族性甲状腺非髓样癌尤其是亲子型,具有较高的侵袭性,易累及双叶,多灶发病,常合并甲状腺良性疾病.建议对原发灶行甲状腺全切除术,必要时术后行131Ⅰ治疗.对于家族性甲状腺非髓样癌家系中家属,建议> 20岁者行颈部超声筛查,以便早期发现和早期治疗.%Objective To analyze the clinical features of familial non-medullary thyroid cancers,and to discuss their management.Methods Sixty thyroid cancer patients with familial non-medullary thyroid cancer (FNMTC)history during Sep.2003 to Sep.2012 were collected as study group,and another 60 sporadic thyroid cancer patients were randomly chosen as control.We compared the differences of their clinical features.Results All

  15. Understanding Legacy Features with Featureous

    DEFF Research Database (Denmark)

    Olszak, Andrzej; Jørgensen, Bo Nørregaard

    2011-01-01

    Java programs called Featureous that addresses this issue. Featureous allows a programmer to easily establish feature-code traceability links and to analyze their characteristics using a number of visualizations. Featureous is an extension to the NetBeans IDE, and can itself be extended by third...

  16. Pre-operative MR evaluation of features that indicate the need of adjuvant therapies in early stage cervical cancer patients. A single-centre experience

    International Nuclear Information System (INIS)

    Objectives: This study compared the MR measurement of minimum uninvolved cervical stroma and maximum stromal invasion, and the detection of positive lymph nodes with the pathological results. In addition, tumour type and grade were correlated with nodal status and apparent diffusion coefficient (ADC) values. Methods: Patients who underwent surgery and MR at our centre for early stage cervical cancer (FIGO IA1-IIB) were included. Data recorded included: age, date of MR, clinical FIGO (International Federation of Gynacology and Obstetrics) stage, histological type and grade, adjuvant therapy, pre-surgical conisation. MR evaluation included: measurement of the minimum uninvolved stroma, maximum thickness of stromal involvement, presence and site of positive pelvic lymph nodes, calculation of ADC values. Statistical analysis was performed to compare MR and pathological results. The agreement between MR and pathology in measuring depth of stromal invasion was analysed by Bland–Altman plot, calculating the limits of agreement (LoA). Results: 113/217 patients underwent adjuvant therapies. Sensitivity, specificity, positive predictive value, negative predictive value and accuracy of MR in evaluation of minimum thickness of uninvolved cervical stroma were 88%, 75%, 70%, 90% and 80%; the same values in evaluation of pelvic positive lymph nodes were 64%, 85%, 65%, 84% and 78%. The mean difference between MR and pathological results in measuring maximum depth of stromal invasion was −0.65 mm (95% LoA: −9.37 mm; 8.07 mm). Depth of stromal invasion was strongly related to positive nodal status (p < 0.001). ADC values (available in 51/217 patients) were not associated with the features assessed. Conclusions: Pre-surgical MR is accurate (80%) in evaluating the minimum thickness of uninvolved cervical stroma; MR measurements of maximum depth of stromal invasion differed ±9 mm from the pathological results in 95% of cases. Furthermore, a strong association was found between

  17. Pre-operative MR evaluation of features that indicate the need of adjuvant therapies in early stage cervical cancer patients. A single-centre experience

    Energy Technology Data Exchange (ETDEWEB)

    Rizzo, Stefania, E-mail: stefania.rizzo@ieo.it [Department of Radiology, European Institute of Oncology, via Ripamonti 435, 20141 Milan (Italy); Calareso, Giuseppina [Department of Radiology, European Institute of Oncology, via Ripamonti 435, 20141 Milan (Italy); Maccagnoni, Sara; Angileri, Salvatore Alessio [Department of Health Sciences, University of Milan, via A.di Rudinì 8, 20142 Milan (Italy); Landoni, Fabio [Division of Gynecology, European Institute of Oncology, via Ripamonti 435, 20141 Milan (Italy); Raimondi, Sara; Pasquali, Elena [Division of Epidemiology and Biostatistics, European Institute of Oncology, via Ripamonti 435, 20141 Milan (Italy); Lazzari, Roberta [Division of Radiotherapy, European Institute of Oncology, via Ripamonti 435, 20141 Milan (Italy); Bellomi, Massimo [Department of Radiology, European Institute of Oncology, via Ripamonti 435, 20141 Milan (Italy); Department of Health Sciences, University of Milan, via A.di Rudinì 8, 20142 Milan (Italy)

    2014-05-15

    Objectives: This study compared the MR measurement of minimum uninvolved cervical stroma and maximum stromal invasion, and the detection of positive lymph nodes with the pathological results. In addition, tumour type and grade were correlated with nodal status and apparent diffusion coefficient (ADC) values. Methods: Patients who underwent surgery and MR at our centre for early stage cervical cancer (FIGO IA1-IIB) were included. Data recorded included: age, date of MR, clinical FIGO (International Federation of Gynacology and Obstetrics) stage, histological type and grade, adjuvant therapy, pre-surgical conisation. MR evaluation included: measurement of the minimum uninvolved stroma, maximum thickness of stromal involvement, presence and site of positive pelvic lymph nodes, calculation of ADC values. Statistical analysis was performed to compare MR and pathological results. The agreement between MR and pathology in measuring depth of stromal invasion was analysed by Bland–Altman plot, calculating the limits of agreement (LoA). Results: 113/217 patients underwent adjuvant therapies. Sensitivity, specificity, positive predictive value, negative predictive value and accuracy of MR in evaluation of minimum thickness of uninvolved cervical stroma were 88%, 75%, 70%, 90% and 80%; the same values in evaluation of pelvic positive lymph nodes were 64%, 85%, 65%, 84% and 78%. The mean difference between MR and pathological results in measuring maximum depth of stromal invasion was −0.65 mm (95% LoA: −9.37 mm; 8.07 mm). Depth of stromal invasion was strongly related to positive nodal status (p < 0.001). ADC values (available in 51/217 patients) were not associated with the features assessed. Conclusions: Pre-surgical MR is accurate (80%) in evaluating the minimum thickness of uninvolved cervical stroma; MR measurements of maximum depth of stromal invasion differed ±9 mm from the pathological results in 95% of cases. Furthermore, a strong association was found between

  18. Spatial patterns and trends of daily rainfall regime in Peninsular Malaysia during the southwest and northeast monsoons: 1975-2004

    Science.gov (United States)

    Suhaila, Jamaludin; Deni, S. M.; Wan Zin, Wan Zawiah; Jemain, Abdul Aziz

    2010-12-01

    This study focuses on describing the patterns and trends of five selected rainfall indices in Peninsular Malaysia, based on daily rainfall data from 1975 to 2004. Five rainfall indices based on two main seasons, the northeast and southwest monsoons, were analyzed: total rainfall, frequency of wet days, rainfall intensity, frequency of wet days (extreme frequency), and rainfall intensity (extreme intensity) exceeding the long-term mean 95th percentile. The findings indicated that the eastern areas of the Peninsula were strongly influenced by the northeast monsoon, while the southwest monsoon had the greatest impact on the western part of the Peninsula, particularly the northwest. In studying the trends of these rainfall indices, the non-parametric Mann-Kendall test was used. The serial correlation and cross-correlation structure of the data were accounted for in determining the significance of the Mann-Kendall test results. It was found that there were differences in trend patterns over the Peninsula during both seasons, with a decrease in total rainfall and a significant decrease in frequency of wet days leading to a significant increase in rainfall intensity over the Peninsula, except in eastern areas, during the southwest monsoon. In contrast, a trend of significantly increasing total rainfall and an increase in frequencies of extreme rainfall events during the northeast monsoon caused a significantly increasing trend in rainfall intensity over the Peninsula to be observed. However, no significant trend was observed with respect to extreme intensity during both monsoons over the Peninsula. The findings of this study suggest that rainfall patterns in Peninsular Malaysia are very much affected by the northeast monsoon, based on the larger magnitude of changes observed in the rainfall indices.

  19. Translation as a measure of literary domination: the case of Quebec literature translated in Spain (1975-2004)

    OpenAIRE

    Córdoba Serrano, María Sierra

    2010-01-01

    Recent literary manifestos claim that “the center is no longer the center” (Le Devoir 2007). Indeed, it is generally admitted that Quebec literature has been more or less independent from the French field since the 1970’s. However, the analysis of the translation of this literature –its international circulation, and the almost compulsory stopover in France before being selected for translation by the agents of other literary fields– reveals various mechanisms through which the French symboli...

  20. 120例三阴性乳腺癌的临床特征及预后多因素分析%Clinical features and prognostic factors of 120 cases of triple-negative breast cancer

    Institute of Scientific and Technical Information of China (English)

    关琦

    2012-01-01

    目的探讨三阴性乳腺癌的临床特征以及预后.方法回顾性分析2008年3月至2011年6月我院治疗的530例乳腺癌患者的临床记录资料,其中120例为三阴性乳腺癌,将所有患者分成两组,即三阴性乳腺癌组和非三阴乳腺癌组,对比分析两组患者的临床特征、远处迁移、复发等情况.结果三阴性乳腺癌与非三阴性乳腺癌在年龄、肿瘤直径、肿瘤分级、转移或复发以及家族史方面均差异显著( P0.05).结论三阴性乳腺癌与非三阴性乳腺癌相比,更容易发生远处转移和局部复发,预后较差.%Objective: To investigate clinical features and prognostic factors of triple-negative breast cancer. Methods:Clinical data of 530 patients with breast cancer in our hospital from March,2008 to June,2011 were reviewed.530 patients with breast cancer were divided into TNBC group(120) and non-TNBC group(410).Clinical features , distant migration , relapse , etc. were analyzed. Results: The differences of age , tumor size , tumor grade , metastasis or recurrence and family history between triple-negative breast cancers and non - triple negative breast cancer were significant ( P0.05).Conclusion: Compared with non-triple negative breast cancer, the triple negative breast cancer have more prone to distant metastasis , local recurrence and poor prognosis.

  1. EGFR Mutations in Surgically Resected Fresh Specimens from 697 Consecutive Chinese Patients with Non-Small Cell Lung Cancer and Their Relationships with Clinical Features

    Directory of Open Access Journals (Sweden)

    Yuanyang Lai

    2013-12-01

    Full Text Available We aimed to reveal the true status of epidermal growth factor receptor (EGFR mutations in Chinese patients with non-small cell lung cancer (NSCLC after lung resections. EGFR mutations of surgically resected fresh tumor samples from 697 Chinese NSCLC patients were analyzed by Amplification Refractory Mutation System (ARMS. Correlations between EGFR mutation hotspots and clinical features were also explored. Of the 697 NSCLC patients, 235 (33.7% patients had tyrosine kinase inhibitor (TKIs sensitive EGFR mutations in 41 (14.5% of the 282 squamous carcinomas, 155 (52.9% of the 293 adenocarcinomas, 34 (39.5% of the 86 adenosquamous carcinomas, one (9.1% of the 11 large-cell carcinomas, 2 (11.1% of the 18 sarcomatoid carcinomas, and 2 (28.6% of the 7 mucoepidermoid carcinomas. TKIs sensitive EGFR mutations were more frequently found in female patients (p < 0.001, non-smokers (p = 0.047 and adenocarcinomas (p < 0.001. The rates of exon 19 deletion mutation (19-del, exon 21 L858R point mutation (L858R, exon 21 L861Q point mutation (L861Q, exon 18 G719X point mutations (G719X, including G719C, G719S, G719A were 43.4%, 48.1%, 1.7% and 6.8%, respectively. Exon 20 T790M point mutation (T790M was detected in 3 squamous carcinomas and 3 adenocarcinomas and exon 20 insertion mutation (20-ins was detected in 2 patients with adenocarcinoma. Our results show the rates of EGFR mutations are higher in all types of NSCLC in Chinese patients. 19-del and L858R are two of the more frequent mutations. EGFR mutation detection should be performed as a routine postoperative examination in Chinese NSCLC patients.

  2. 乳腺癌MRI形态学表现与预后因子的相关性%Correlation of Morphological MRI Features with Prognostic Factors in Breast Cancer

    Institute of Scientific and Technical Information of China (English)

    侯伟娜

    2013-01-01

    本文旨在评价MRI对乳腺癌的诊断价值,在此基础上进一步分析乳腺癌MRI表现与预后因子的相关性,为乳腺癌的早期诊断、临床制订个体化治疗方案及预后评估提供更多的信息和依据。%This paper aims to evaluate the diagnostic value of MRI in breast cancer.On the basis of further analysis of correlation of MRI features with prognostic factors in breast cancer, the paper provides more information for the early diagnosis of breast cancer and clinical formulate individualized treatment plan.

  3. CT Features of Bone Flare Phenomena of Metastatic Bone Disease in Lung Cancer%肺癌骨转移骨闪烁现象的CT表现

    Institute of Scientific and Technical Information of China (English)

    邱艳芳; 文智; 许晓燕; 王永丽; 于莹莹; 赵艳萍

    2015-01-01

    PurposeThe bone flare phenomena has been well described on bone scintigraphy for efficacy monitoring up to now, but our knowledge has been rarely described on MSCT, the phenomena may be erroneously classiifed as disease progression. This article intends to evaluate the existence and CT features of bone flare phenomena of metastatic bone disease in lung cancer patients treated with ibandronate, to raise awareness of this phenomenon.Materials and Methods The clinical and image data of 45 patients with bone metastases of lung cancer were retrospectively analyzed prior to treatment and 3, 6 months after treatment, the change of CT value and CT features 3 months after treatment between bone flare phenomena group, progressive disease group 1 and progressive disease group 2 were compared.Results The incidence of bone flare phenomena was 6.7% (3/45). 3 months after treatment, CT value of the bone flare phenomena group and progressive disease group 1 changed when compared with before treatment, the differences were statistically signiifcant (t=-5.787 and-2.788,P0.05) of CT value in the progressive disease group 2 after 3 months' treatment. After 3 months' treatment, the bone flare phenomena group mostly appeared as osteogenic sclerosis of osteolytic lesions, while the cases of progressive disease group mostly appeared as new periosteal reaction of the lesion, or osteogenic/mixed lesion combined with osteolytic damages, the difference between the two groups was statistically signiifcant (χ2=10.139, 8.041 and 4.154,P0.05).Conclusion In patients treated with ibandronate, when there is therapeutic effect evaluation standard of bone metastases (disease progression) and clinical comprehensive curative effect evaluation standard (effective) discordance at 3 months after treatment, it can be interpreted as bone flare phenomena, and the change of CT features contributes to the differential diagnosis of bone flare phenomena with progressive disease.%目的:骨闪烁现象在核

  4. Emotions Features Of Cancer Patients and the Influencing Factors%癌症患者情绪状况及其影响因素分析

    Institute of Scientific and Technical Information of China (English)

    杨智辉; 王建平

    2011-01-01

    目的:调查癌症患者的情绪状况,并分析其影响因素.方法:采用简明心境问卷一简式、医用应对问卷和艾森克人格问卷简式量表等测查工具对205名60岁以上的癌症病人进行调查.结果:①癌症病人负性情绪平均分都在1.5左右,有40%以上的患者在抑郁、焦虑和疲乏情绪上均分大于2,男性、高年龄组和离退休组的患者情绪状况更差.②屈服应对、精神质和神经质与负性情绪正相关显著,与正性情绪负相关显著;掩饰性和内外向与负性情绪负相关显著,与正性情绪正相关显著.③屈服应对和人格维度中的精神质、神经质和掩饰性对各类情绪最有预测作用.结论:癌症病人以抑郁、焦虑、疲乏三类负性情绪最为严重,采用屈服的应对策略和敏感、情绪不稳定的患者负性情绪最严重,外向和掩饰性高的患者情绪状况更好.%Objective: To explore the emotion features of cancer patients and the influencing factors.Methods: The Profile of Mood States-Short Form, Medical Coping Modes Questionnaire, Eysenck Personality Questionnaire-revised were administrated to a sample of 205 cancer patients.Results: ①The mean of the negative emotion were about 1.5, and there were more than 40% patients whose anxiety, depression and fatigue emotions scores were above 2.②The coping strategies of resignation, neuroticism and psychoticism dimensions had a significant positive correlation with negative emotion and negative correlation with positive emotion, Lie and Intraversion-Extraversion had significant negative correlation with negative emotion and positive correlation with positive emotion.③The coping strategies of resignation and personalities of neuroticism and psychoticism were the most significant predictors of emotion.Conclusion: Anxiety, depression and fatigue are the most serious emotion problems and those who are sensitive, unstable and taking the coping strategies of resignation have

  5. Breast cancer screenings

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000837.htm Breast cancer screenings To use the sharing features on this page, please enable JavaScript. Breast cancer screenings can help find breast cancer early, before ...

  6. Prostate cancer screenings

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000846.htm Prostate cancer screenings To use the sharing features on this ... Intern Med . 2011;155(11):762-71. National Cancer Institute. Prostate Cancer Screening -- for health professionals. Revised April 2, ...

  7. 274例非小细胞肺癌临床特点分析%Clinical features with non- small- cell lung cancer: An analysis of 274 patients

    Institute of Scientific and Technical Information of China (English)

    陈衍; 韩晟; 薛妍; 刘文超

    2012-01-01

    目的 了解我国非小细胞肺癌(NSCLC)患者流行病学特点,为临床NSCLC的防治提供参考数据.方法 对某医科大学附属医院肿瘤科组织学确诊的274例NSCLC患者临床特点及其相关因素进行回顾性研究,并分析影响临床分期和病理的独立风险因子.结果 男女比例为1.88∶1.腺癌和鳞癌约占总样本的90%,晚期患者占67.88%.47.45%有吸烟史,约28.83%来自农村.女性、农村患者发病年龄明显低于男性及城市患者.性别、病理类型及手术史是影响临床分期的独立风险因素.女性、腺癌及未进行手术的患者,晚期的比例更高.性别、年龄及吸烟状态均为影响病理的独立风险因素.男性、≤60岁以及吸烟患者更易患鳞癌.无论吸烟与否,男性较女性更易患鳞癌.即使排除吸烟因素,女性也较男性更易患腺癌.结论 NSCLC的发病特点发生变化,应加强对女性、农村人群及中青年的肺癌普查,提高早期NSCLC的筛查率.%Objective To investigate the clinical features of patients with non- small - cell lung cancer (NSCLC) in China in order to provide clinical reference data for further prevention and treatment of NSCLC. Methods The clinical features of 274 cases of NSCLC histologically diagnosed in a university hospital were retrospectively analyzed. The independent influencing factors related to stage and pathology with Cox's regression analysis were studied. Results The male to female ratio was 1.88:1. Squamous cell carcinoma and adenocarcinoma accounted for neatly 90 % in the total sample. Patients were diagnosed with advanced stage (Ⅲ B - Ⅳ) accounted for 67.88 % . Patients with smoking habits accounted for 47.45 % and 28.83 % of them lived in ruraLareas. Multiple regression analysis showed that gender, pathology and surgery were the independent variables influencing clinical stage. Female who had adenocarcinoma and received no surgery had higher incidence of caner in their late

  8. Application of multiplex PCR with histopathologic features for detection of familial breast cancer in formalin-fixed, paraffin-embedded histologic specimens.

    Science.gov (United States)

    Rassi, H; Houshmand, M; Hashemi, M; Majidzadeh, K; Akbari, M H Hosseini; Panahi, M Shafa Shariat

    2008-01-01

    Breast cancer is the most common malignancy among females in the world. Age and familial history are the major risk factors for the development of this disease in Iran. Mutations of BRCA1 and BRCA2 genes are associated with a greatly increased risk for development of familial breast cancer. Frequency of BRCA mutations was identified in familial breast cancers (FBC) and non-familial breast cancers (NFBC) by molecular genetics, morphological and Immunohistochemical methods. Thirty forth formalin-fixed, paraffin-embedded breast tissue tumors were analyzed from 16 patients with FBC and 18 patients with NFBC. Three 5382insC mutations detected by multiplex PCR in 16 familial breast cancers. Immunohistochemical method was used to detect estrogen receptor (ER) and progesterona receptor (PR) and TP53. Comparison of ER, PR and TP53 exhibited high difference (P < 0.0001) in familial breast cancers and non-familial breast cancers. Our results demonstrated that 5382insC mutation, ER, PR, TP53, mitotic activity, polymorphism, necrosis and tubules can serve as the major risk factors for the development of FBC. PMID:18630122

  9. Solar Features

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Collection includes a variety of solar feature datasets contributed by a number of national and private solar observatories located worldwide.

  10. Comparison of clinicopathologic features and survival in young American women aged 18–39 years in different ethnic groups with breast cancer

    OpenAIRE

    Liu, P.; Li, X; E.A. Mittendorf; Li, J.; Du, X L; He, J.; Ren, Y; Yang, J; Hunt, K. K.; Yi, M.

    2013-01-01

    Background: Ethnic disparities in breast cancer diagnoses and disease-specific survival (DSS) rates in the United States are well known. However, few studies have assessed differences specifically between Asians American(s) and other ethnic groups, particularly among Asian American(s) subgroups, in women aged 18–39 years. Methods: The Surveillance, Epidemiology, and End Results database was used to identify women aged 18–39 years diagnosed with breast cancer from 1973 to 2009. Incidence rates...

  11. The clinical features of papillary thyroid cancer in Hashimoto’s thyroiditis patients from an area with a high prevalence of Hashimoto’s disease

    OpenAIRE

    Zhang Ling; Li Hui; Ji Qing-hai; Zhu Yong-xue; Wang Zhuo-ying; Wang Yu; Huang Cai-ping; Shen Qiang; Li Duan-shu; Wu Yi

    2012-01-01

    Abstract Background The goal of this study was to identify the clinicopathological factors of co-existing papillary thyroid cancer (PTC) in patients with Hashimoto���s thyroiditis (HT) and provide information to aid in the diagnosis of such patients. Methods This study included 6109 patients treated in a university-based tertiary care cancer hospital over a 3-year period. All of the patients were categorised based on their final diagnosis. Several clinicopathological factors, such as age, gen...

  12. CANCER

    Directory of Open Access Journals (Sweden)

    N. Kavoussi

    1973-09-01

    Full Text Available There are many carcinogenetic elements in industry and it is for this reason that study and research concerning the effect of these materials is carried out on a national and international level. The establishment and growth of cancer are affected by different factors in two main areas:-1 The nature of the human or animal including sex, age, point and method of entry, fat metabolism, place of agglomeration of carcinogenetic material, amount of material absorbed by the body and the immunity of the body.2 The different nature of the carcinogenetic material e.g. physical, chemical quality, degree of solvency in fat and purity of impurity of the element. As the development of cancer is dependent upon so many factors, it is extremely difficult to determine whether a causative element is principle or contributory. Some materials are not carcinogenetic when they are pure but become so when they combine with other elements. All of this creates an industrial health problem in that it is almost impossible to plan an adequate prevention and safety program. The body through its system of immunity protects itself against small amounts of carcinogens but when this amount increases and reaches a certain level the body is not longer able to defend itself. ILO advises an effective protection campaign against cancer based on the Well –equipped laboratories, Well-educated personnel, the establishment of industrial hygiene within factories, the regular control of safety systems, and the implementation of industrial health principles and research programs.

  13. A prospective study of demographic features and quality of life in HIV-positive women with cervical cancer treated at Tygerberg Hospital

    Directory of Open Access Journals (Sweden)

    George du Toit

    2015-04-01

    Full Text Available Background: Cervical cancer and human immunodeficiency virus (HIV infection/acquired immune deficiency syndrome (AIDS both have a high incidence in South Africa. Cervical cancer treatment of HIV-positive women poses challenges. Treatment-related changes in quality of life (QOL of such women are important to future treatment protocols.Aim: To examine demographic data of HIV-negative and HIV-positive women at diagnosis of cervical cancer and describe their changes in QOL as a result of treatment.Methods and materials: All newly diagnosed patients with cervical cancer at Tygerberg Hospital were approached to participate in the study. The European Organisation for Research and Treatment of Cancer Quality of Life Core Questionnaire (EORTC QLQ-C30 and the Cervix Cancer Module (QLQ-CX24 were used. General QOL was measured with the EORTC QLQ-C30 and cervical-specific QOL with the QLQ-CX24 questionnaire. The patients completed the questionnaire at diagnosis, on completion of treatment and at 3 months’ follow-up.Results: The study included a total of 221 women of whom 22% were HIV-positive; the latter were younger and of higher educational level than the rest. Mean monthly income and stage distribution was similar between the two groups. HIV-positive patients underwent radiation therapy more commonly than chemoradiation. HIV-positive women showed statistically significantly higher loss to follow-up during the study. HIV-positive women experienced no improvement in insomnia, appetite loss, nausea, vomiting, diarrhoea, social role or any of the sexual domains. In contrast, HIV-negative women experienced statistically significant improvement in all sexual domains other than sexual/vaginal functioning. The QOL improvement of HIV-negative women was statistically significantly greater than their HIV-positive counterparts in the majority of QOL domains. Global health improved in both groups, with HIV-negative women experiencing greater improvement. HIV

  14. Feature Reduction in Graph Analysis

    Directory of Open Access Journals (Sweden)

    Punpiti Piamsa-nga

    2008-08-01

    Full Text Available A common approach to improve medical image classification is to add more features to the classifiers; however, this increases the time required for preprocessing raw data and training the classifiers, and the increase in features is not always beneficial. The number of commonly used features in the literature for training of image feature classifiers is over 50. Existing algorithms for selecting a subset of available features for image analysis fail to adequately eliminate redundant features. This paper presents a new selection algorithm based on graph analysis of interactions among features and between features to classifier decision. A modification of path analysis is done by applying regression analysis, multiple logistic and posterior Bayesian inference in order to eliminate features that provide the same contributions. A database of 113 mammograms from the Mammographic Image Analysis Society was used in the experiments. Tested on two classifiers – ANN and logistic regression – cancer detection accuracy (true positive and false-positive rates using a 13-feature set selected by our algorithm yielded substantially similar accuracy as using a 26-feature set selected by SFS and results using all 50-features. However, the 13-feature greatly reduced the amount of computation needed.

  15. SU-E-J-241: Wavelet-Based Temporal Feature Extraction From DCE-MRI to Identify Sub-Volumes of Low Blood Volume in Head-And-Neck Cancer

    Energy Technology Data Exchange (ETDEWEB)

    You, D; Aryal, M; Samuels, S; Eisbruch, A; Cao, Y [University of Michigan, Ann Arbor, MI (United States)

    2015-06-15

    Purpose: A previous study showed that large sub-volumes of tumor with low blood volume (BV) (poorly perfused) in head-and-neck (HN) cancers are significantly associated with local-regional failure (LRF) after chemoradiation therapy, and could be targeted with intensified radiation doses. This study aimed to develop an automated and scalable model to extract voxel-wise contrast-enhanced temporal features of dynamic contrastenhanced (DCE) MRI in HN cancers for predicting LRF. Methods: Our model development consists of training and testing stages. The training stage includes preprocessing of individual-voxel DCE curves from tumors for intensity normalization and temporal alignment, temporal feature extraction from the curves, feature selection, and training classifiers. For feature extraction, multiresolution Haar discrete wavelet transformation is applied to each DCE curve to capture temporal contrast-enhanced features. The wavelet coefficients as feature vectors are selected. Support vector machine classifiers are trained to classify tumor voxels having either low or high BV, for which a BV threshold of 7.6% is previously established and used as ground truth. The model is tested by a new dataset. The voxel-wise DCE curves for training and testing were from 14 and 8 patients, respectively. A posterior probability map of the low BV class was created to examine the tumor sub-volume classification. Voxel-wise classification accuracy was computed to evaluate performance of the model. Results: Average classification accuracies were 87.2% for training (10-fold crossvalidation) and 82.5% for testing. The lowest and highest accuracies (patient-wise) were 68.7% and 96.4%, respectively. Posterior probability maps of the low BV class showed the sub-volumes extracted by our model similar to ones defined by the BV maps with most misclassifications occurred near the sub-volume boundaries. Conclusion: This model could be valuable to support adaptive clinical trials with further

  16. In Response To: Professor Cassileth's manuscript on "Alternative and Complementary Cancer Treatments," Featured in The Oncologist 1996;1:173-179.

    Science.gov (United States)

    Quah

    1996-01-01

    COMMENTS FOR PROFESSOR BARRIE R. CASSILETH: I have enjoyed reading the two issues of The Oncologist I've received so far. I would like to make some comments on Dr. Cassileth's article. I'm a pediatric oncologist at the National University Hospital in Singapore. Singapore is an interesting place to study people, as ours is a multi-racial country, with 75% Chinese, 16% Malays and 7% Indians, plus a significant expatriate population (Americans, British, Australians, etc.). I've been very interested in the influence of different ethnic and social backgrounds on how our patients cope with their diseases, especially families of children with cancer. We did a survey of 20 patients and found that nine of the children are given bird's nest, nine are given ginseng, and five had been given Chinese medicinal herbs. I've been doing a bit of literature search, and found that there's some evidence that Chinese medicine may help to "boost the immune system," enhancing the ability of the patients to undergo conventional cancer therapy. However, most traditional Chinese medicine practitioners would recommend that these patients continue with their "Western treatment." I have no objection to patients availing themselves of these complementary approaches, though we do not encourage it either. We are in the unenviable situation of trying to help and give advice to our patients about things about which we know little, as there is so little hard evidence. Of all the literature I've gone through so far, I find the recent Choices in Healing by Michael Lerner (MIT Press) the most helpful. PROFESSOR CASSILETH'S RESPONSE: Dr. Quah raises a number of important issues. I share his interest in the influence of culture and ethnicity on how patients and families cope with cancer. The cultural meaning of malignant disease, in fact, has long shaped not only individual reactions, but also how societies have approached research, treatment, and communication. In the United States, for example, the word

  17. 乳腺癌数据的几何代数特征提取和微分进化特征选择研究%Feature Extraction for Breast Cancer Data Based on Geometric Algebra Theory and Feature Selection Using Differential Evolution

    Institute of Scientific and Technical Information of China (English)

    李静; 洪文学

    2014-01-01

    模式识别问题中特征提取和特征选择是一个重要问题.基于向量的几何代数表示方法,提出了一种新的几何代数片积系数特征提取方法,并对其中存在的维数升高问题进行了研究,提出了改进的微分进化特征选择方法.本文分类器采用线性判别分析,以公开的乳腺癌生物医学数据集进行10折交叉验证(10 CV),得到的分类结果超过了96%,优于原始特征和传统特征提取方法下的分类性能.%The feature extraction and feature selection are the important issues in pattern recognition.Based on the geometric algebra representation of vector,a new feature extraction method using blade coefficient of geometric algebra was proposed in this study.At the same time,an improved differential evolution (DE) feature selection method was proposed to solve the elevated high dimension issue.The simple linear discriminant analysis was used as the classifier.The result of the 10-fold cross-validation (10 CV) classification of public breast cancer biomedical dataset was more than 96 % and proved superior to that of the original features and traditional feature extraction method.

  18. Development of a Compact Wide-Slot Antenna for Early Stage Breast Cancer Detection Featuring Circular Array Full-View Geometry

    Directory of Open Access Journals (Sweden)

    S. S. Tiang

    2014-01-01

    Full Text Available A novel planar type antenna printed on a high permittivity Rogers’ substrate is proposed for early stage microwave breast cancer detection. The design is based on a p-shaped wide-slot structure with 50 Ω microstrip feeding circuit to eliminate losses of transmission. The design parameters are optimized resulting in a good reflection coefficient at −10 dB from 4.5 to 10.9 GHz. Imaging result using inhomogeneous breast phantom indicates that the proposed antenna is capable of detecting a 5 mm size cancerous tumor embedded inside the fibroglandular region with dielectric contrast between the target and the surrounding materials ranging from 1.7 : 1 to 3.6 : 1.

  19. Analysis of Normal-Tumour Tissue Interaction in Tumours: Prediction of Prostate Cancer Features from the Molecular Profile of Adjacent Normal Cells

    OpenAIRE

    Trevino, Victor; Tadesse, Mahlet G.; Vannucci, Marina; Al-Shahrour, Fatima; Antczak, Philipp; Durant, Sarah; Bikfalvi, Andreas; Dopazo, Joaquin; Campbell, Moray J.; Falciani, Francesco

    2011-01-01

    Statistical modelling, in combination with genome-wide expression profiling techniques, has demonstrated that the molecular state of the tumour is sufficient to infer its pathological state. These studies have been extremely important in diagnostics and have contributed to improving our understanding of tumour biology. However, their importance in in-depth understanding of cancer patho-physiology may be limited since they do not explicitly take into consideration the fundamental role of the t...

  20. The Expression Pattern of PDX-1, SHH, Patched and Gli-1 Is Associated with Pathological and Clinical Features in Human Pancreatic Cancer

    OpenAIRE

    Quint, Karl; Stintzing, Sebastian; Alinger, Beate; Hauser-Kronberger, Cornelia; Dietze, Otto; Gahr, Susanne; Hahn, Eckhart G.; Ocker, Matthias; Neureiter, Daniel

    2013-01-01

    Background and Aims: Pancreatic cancer cells have been shown to possess stem-cell-like properties, especially by reactivating embryonic transcription factors involved in tissue differentiation. We therefore investigated if and to what extent developmental genes of the human pancreas are expressed in pancreatic ductal adenocarcinomas and precursor lesions, pancreatic intraepithelial neoplasia (PanIN), and if this correlates or predicts response to treatment and overall survival. Material and M...

  1. Post traumatic painful shoulder – a delayed clinical feature of upper lobe lung cancer in a 74 year-old male. - case report -

    OpenAIRE

    Oana-Cristina Arghir; Mihaela Trenchea; Mădălina Iliescu; Galie, N; Camelia Ciobotaru

    2014-01-01

    A 74 year old Caucasian man, presents with a 6 week history of right sided chest pain including traumatic related painful right shoulder. Shoulder minor contusion was diagnosed and partial managed by symptomatic treatment associated to rehabilitation. The pain was initially eased with nonsteroidal anti-inflammatory drug (NSAID) use and finally changed worsening. He has evidence of moderate COPD on spirometry and has been commenced on inhalers. An invasive primitive adenocarcinoma lung cancer ...

  2. The clinical features of papillary thyroid cancer in Hashimoto’s thyroiditis patients from an area with a high prevalence of Hashimoto’s disease

    Directory of Open Access Journals (Sweden)

    Zhang Ling

    2012-12-01

    Full Text Available Abstract Background The goal of this study was to identify the clinicopathological factors of co-existing papillary thyroid cancer (PTC in patients with Hashimoto���s thyroiditis (HT and provide information to aid in the diagnosis of such patients. Methods This study included 6109 patients treated in a university-based tertiary care cancer hospital over a 3-year period. All of the patients were categorised based on their final diagnosis. Several clinicopathological factors, such as age, gender, nodular size, invasive status, central compartment lymph node metastasis (CLNM and serum thyroid-stimulating hormone (TSH level, were compared between the various groups of patients. Results There were 653 patients with a final diagnosis of HT. More PTC was found in those with HT (58.3%; 381 of 653 than those without HT (2416 of 5456; 44.3%; p Conclusion PTC and HT have a close relationship in this region of highly prevalent HT disease. Based on the results of our study, we hypothesise that long-term HT leads to elevated serum TSH, which is the real risk factor for thyroid cancer.

  3. Co-mutation of p53, K-ras genes and accumulation of p53 protein and its correlation to clinicopathological features in rectal cancer

    Institute of Scientific and Technical Information of China (English)

    Zhi-Zhong Pan; De-Sen Wan; Gong Chen; Li-Ren Li; Zhen-Hai Lu; Bi-Jun Huang

    2004-01-01

    AIM: To determine the accuracy of p53 gene mutations predicted by overexpression of p53 protein immunohistochemically,and to investigate the co-mutation of p53 and K-rasgenes in rectal cancer and its effect on promoting malignant biologic behaviors of tumors.METHODS: Ninety-seven specimens of rectal cancer were surgically resected in our hospital from August 1996 to October 1997. The hot mutation areas of p53 gene (in exons 5-8) and K-ras gene (in codon 5/12 and 13) were detected with polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP), and overexpression of p53 protein was detected with immunohistochemistry (IHC) in the 97 specimens of rectal cancer. Correlation between gene mutations and tumor clinicopathologic factors was studied, and survival analysis was penfomed as well.RESULTS: There were 36 cases of p53 gene mutations in 61 p53 protein positive cases, and 21 cases of p53 gene non-mutation in 36 p53 protein negative cases respectively.The coincidence rate of p53 gene mutation by IHC method with PCR-SSCP method was 58.8% (57/97). The mutation rate of p53 gene was 52.6% (51/97), while K-ras gene mutation was observed in codons 12 and 13 in 61 cases with a mutation rate of 62.9% (61/97). Single gene mutation of p53 or K-raswas found in 32 cases. Both p53 and K-ras gene mutation were found in 48 cases. Statistical analysis showed that p53 and K-rasgene mutations were not related to the clinicopathologic factors, including tumor size, gross tumor type, histological classification, differentiation, invasion to intestinal veins, lymphatics and nerves, invasive depth to wall, lymph node metastasis, and Dukes' stages (P>0.05).The survival in patients with no gene mutation, single gene mutation and both gene mutations were similar (P>0.05).CONCLUSION: IHC has a certain false positive and false negative rate in detecting p53 gene mutations. Malignant biological behaviours of rectal cancer are not enhanced by p53 and K-rasgene mutations. Co

  4. 103例经纤支镜确诊肺癌病例的临床特点分析%Clinical features analysis of 103 cases of lung cancer diagnosed by fibrobronchoscope

    Institute of Scientific and Technical Information of China (English)

    胡绳; 田坤; 肖贞良; 张定涛; 陈章

    2014-01-01

    目的:探讨肺癌纤支镜下特征及临床特点。方法总结分析我科经纤支镜病理活检结果为阳性的103例肺癌的临床特点。结果患者男:女比为4.42:1;男性鳞癌多,占51.2%;女性腺癌多,占47.4%;50~69岁为发病高峰期。肿瘤多侵犯1个部位,以主支气管及肺上叶多见;肿瘤生长方式以管腔生长型常见,占64.1%。联合刷检阳性26例,占25.2%。结论纤支镜活检是确诊肺癌的最有效手段。%Objective To explore the clinical features of lung cancer under fibrobronchoscope(FBS). Methods The clinical features of lung cancer of 103 patients who were diagnosed as positive by pathological biopsy under FBS were summarized and analyzed. Results For the selected patients,the ratio of the male to female was 4. 42 :1. The ratio of squamous cell carcinoma in the male patients accounted for 51. 2% ,and the ratio of adenocarcinoma in the female patients accounted for 47. 4% . The patients of 50-69 years old had the peak incidence. Generally,most of tumors invaded one site,mainly in the main bronchus and upper lobe of lungs. Tumors usually grew in lumen,and accounted for 64. 1% . In combination with brush biopsy,26 ones were found positive and accounted for 25. 2% . Conclusion FBS biopsy is the most effective means to diagnose lung cancer.

  5. Clinical and pathological features of synchronous double primary cancer in stomach and large intestine%同时性胃大肠双原发癌患者的临床病理探讨

    Institute of Scientific and Technical Information of China (English)

    申占龙; 王杉; 叶颖江; 尹慕军; 杨晓东; 姜可伟; 沈凯

    2008-01-01

    Objective To explore the clinical and pathological features of synchronous double primary cancer in stomach and large intestine.Methods The clinical data of 35 patients with synchronous double primary cancer in stomach and large intestine out of 1117 patients with gastric and colorectal cancers treated during the period from January 2001 to December 2006,including 766 cases of colorectal cancer and 351 cases of gastric cancer,were analyzed.Results The 35 patients of synchronous double primary cancer in stomach and large intestine,accounting for 3.13% of the cases of gastric and colorectal cancers,23 males and 12 females,aged 66.7(44-89),could be divided into 4 groups:intestine:intestine group(n=15),stomach-stomach group(n=3),intestine-extra-intestine group(n=13),and stomach-extra-stomach group (n=9);the last 2 groups included 5 case with their primary cancer located in stomach-and large intestine respectively.The number of cases with the 2 primary carcinoma foci both located in the entero-intestinal duct,stomach and large intestine,was 23,more than that of the cases with their 2 carcinoma foei located in stomach or large intestine and other organs respectively(n=12).The 3-year survival rate of the large intestine-large intestine group was higher than that of the stomach-stomach group.Conclusion Early diagnosis,correct distinguishing of the primary and metastatic cancer play an important role in the treatment of synchronous double primary cancer and improvement of the prognosis.%目的 探讨同时性胃与大肠双原发癌临床、病理特点以及诊治和预后.方法 检索北京大学人民医院胃肠外科自2000年1月至2006年12月胃及大肠癌1117例,包括大肠癌766例,胃癌351例,回顾分析同时性胃与大肠双原发癌临床资料,并分组进行统计学分析.结果 胃与大肠各组双原发癌共35例,占同期胃大肠恶性肿瘤的3.1%(35/1117).大肠-大肠组15例,胃-胃组3例,大肠-肠外组13例,胃-胃外组9例,后两组

  6. Do clinical, histological or immunohistochemical primary tumour characteristics translate into different {sup 18}F-FDG PET/CT volumetric and heterogeneity features in stage II/III breast cancer?

    Energy Technology Data Exchange (ETDEWEB)

    Groheux, David; Martineau, Antoine; Merlet, Pascal [Saint-Louis Hospital, Department of Nuclear Medicine, Paris (France); Majdoub, Mohamed; Hatt, Mathieu; Visvikis, Dimitris [INSERM, UMR 1101 LaTIM, Brest (France); Tixier, Florent; Le Rest, Catherine Cheze [Miletrie Hospital, DACTIM, Department of Nuclear Medicine, Poitiers (France); Espie, Marc [Saint-Louis Hospital, Breast Diseases Unit and Department of Medical Oncology, Paris (France); Roquancourt, Anne de [Saint-Louis Hospital, Department of Pathology, Paris (France); Hindie, Elif [University of Bordeaux, Department of Nuclear Medicine, CHU Bordeaux, Bordeaux (France)

    2015-10-15

    The aim of this retrospective study was to determine if some features of baseline {sup 18}F-FDG PET images, including volume and heterogeneity, reflect clinical, histological or immunohistochemical characteristics in patients with stage II or III breast cancer (BC). Included in the present retrospective analysis were 171 prospectively recruited patients with stage II/III BC treated consecutively at Saint-Louis hospital. Primary tumour volumes were semiautomatically delineated on pretreatment {sup 18}F-FDG PET images. The parameters extracted included SUV{sub max}, SUV{sub mean}, metabolically active tumour volume (MATV), total lesion glycolysis (TLG) and heterogeneity quantified using the area under the curve of the cumulative histogram and textural features. Associations between clinical/histopathological characteristics and {sup 18}F-FDG PET features were assessed using one-way analysis of variance. Areas under the ROC curves (AUC) were used to quantify the discriminative power of the features significantly associated with clinical/histopathological characteristics. T3 tumours (>5 cm) exhibited higher textural heterogeneity in {sup 18}F-FDG uptake than T2 tumours (AUC <0.75), whereas there were no significant differences in SUV{sub max} and SUV{sub mean}. Invasive ductal carcinoma showed higher SUV{sub max} values than invasive lobular carcinoma (p = 0.008) but MATV, TLG and textural features were not discriminative. Grade 3 tumours had higher FDG uptake (AUC 0.779 for SUV{sub max} and 0.694 for TLG), and exhibited slightly higher regional heterogeneity (AUC 0.624). Hormone receptor-negative tumours had higher SUV values than oestrogen receptor-positive (ER-positive) and progesterone receptor-positive tumours, while heterogeneity patterns showed only low-level variation according to hormone receptor expression. HER-2 status was not associated with any of the image features. Finally, SUV{sub max}, SUV{sub mean} and TLG significantly differed among the three

  7. Down-regulation of UHRF1, associated with re-expression of tumor suppressor genes, is a common feature of natural compounds exhibiting anti-cancer properties

    Directory of Open Access Journals (Sweden)

    Schini-Kerth Valérie B

    2011-04-01

    Full Text Available Abstract Over-expressed in numerous cancers, Ubiquitin-like containing PHD Ring Finger 1 (UHRF1, also known as ICBP90 or Np95 is characterized by a SRA domain (Set and Ring Associated which is found only in the UHRF family. UHRF1 constitutes a complex with histone deacetylase 1 (HDAC1 and DNA methyltransferase 1 (DNMT1 via its SRA domain and represses the expression of several tumour suppressor genes (TSGs including p16INK4A, hMLH1, BRCA1 and RB1. Conversely, UHRF1 is regulated by other TSGs such as p53 and p73. UHRF1 is hypothetically involved in a macro-molecular protein complex called "ECREM" for "Epigenetic Code Replication Machinery". This complex would be able to duplicate the epigenetic code by acting at the DNA replication fork and by activating the right enzymatic activity at the right moment. There are increasing evidence that UHRF1 is the conductor of this replication process by ensuring the crosstalk between DNA methylation and histone modifications via the SRA and Tandem Tudor Domains, respectively. This cross-talk allows cancer cells to maintain the repression of TSGs during cell proliferation. Several studies showed that down-regulation of UHRF1 expression in cancer cells by natural pharmacological active compounds, favors enhanced expression or re-expression of TSGs, suppresses cell growth and induces apoptosis. This suggests that hindering UHRF1 to exert its role in the duplication of the methylation patterns (DNA + histones is responsible for inducing apoptosis. In this review, we present UHRF1 expression as a target of several natural products and we discuss their underlying molecular mechanisms and benefits for chemoprevention and chemotherapy.

  8. Post traumatic painful shoulder – a delayed clinical feature of upper lobe lung cancer in a 74 year-old male. - case report -

    Directory of Open Access Journals (Sweden)

    Oana-Cristina Arghir

    2014-02-01

    Full Text Available A 74 year old Caucasian man, presents with a 6 week history of right sided chest pain including traumatic related painful right shoulder. Shoulder minor contusion was diagnosed and partial managed by symptomatic treatment associated to rehabilitation. The pain was initially eased with nonsteroidal anti-inflammatory drug (NSAID use and finally changed worsening. He has evidence of moderate COPD on spirometry and has been commenced on inhalers. An invasive primitive adenocarcinoma lung cancer was confirmed by chest CT scan and lymphnode biopsy through mediastinoscopy

  9. Circulating Cell-free miRNA Expression and its Association with Clinicopathologic Features in Inflammatory and Non- Inflammatory Breast Cancer.

    Science.gov (United States)

    Hamdi, K; Blancato, J; Goerlitz, D; Islam, Md; Neili, B; Abidi, A; Gat, A; Ayed, F Ben; Chivi, S; Loffredo, Ca; Jillson, I; Elgaaied, A Benammar; Marrakchi, R

    2016-01-01

    Recent discovery showing the presence of microRNAs (miRNAs) in the circulation sparked interest in their use as potential biomarkers. Our previous studies showed the diagnostic potential of miR-451 as a serological marker for inflammatory breast cancer (IBC), miR-337- 5p and miR-30b for non-inflammatory breast cancer (non-IBC). The aim of this study is to investigate the prognostic values of circulating miRNAs by comparing the amounts of 12 circulating miRNAs in the serum of IBC and non-IBC from Tunisian breast cancer patients, and by determinating whether correlated pairs of miRNAs could provide useful information in the diagnosis of IBC and non-IBC patients. TaqMan qPCR was performed to detect circulating expression of miRNAs in serum of 20 IBC, 20 non-IBC and 20 healthy controls. Nonparametric rank Spearman rho correlation coefficient was used to examine the prognostic value of miRNAs and to assess the correlation profile between miRNAs expression. Further, a large number of miRNAs were highly correlated (rho>0.5) in both patients groups and controls. Also, the correlations profiles were different between IBC, non-IBC and healthy controls indicating important changes in molecular pathways in cancer cells. Our results showed that miR-335 was significantly overexpressed in premenopausal non-IBC patients; miR-24 was significantly overexpressed in non-IBC postmenopausal patients. Patients with previous parity had higher serum of miR-342-5p levels than those without. Furthermore, patients with HER2+ IBC present lower serum levels of miR-15a than patients with HER2- disease. Together, these results underline the potential of miRNAs to function as diagnostic and prognostic markers for IBC and non-IBC, with links to the menopausal state, Her2 status and parity. PMID:27221856

  10. Featuring animacy

    Directory of Open Access Journals (Sweden)

    Elizabeth Ritter

    2015-01-01

    Full Text Available Algonquian languages are famous for their animacy-based grammatical properties—an animacy based noun classification system and direct/inverse system which gives rise to animacy hierarchy effects in the determination of verb agreement. In this paper I provide new evidence for the proposal that the distinctive properties of these languages is due to the use of participant-based features, rather than spatio-temporal ones, for both nominal and verbal functional categories (Ritter & Wiltschko 2009, 2014. Building on Wiltschko (2012, I develop a formal treatment of the Blackfoot aspectual system that assumes a category Inner Aspect (cf. MacDonald 2008, Travis 1991, 2010. Focusing on lexical aspect in Blackfoot, I demonstrate that the classification of both nouns (Seinsarten and verbs (Aktionsarten is based on animacy, rather than boundedness, resulting in a strikingly different aspectual system for both categories. 

  11. Analysis of Clinical and Pathological Features of 565 Cases of Bilateral Primary Breast Cancer%565例双侧原发性乳腺癌临床病理特征分析

    Institute of Scientific and Technical Information of China (English)

    张晟; 张霄蓓; 郝晓甍; 张瑾

    2012-01-01

    目的 探讨原发性双侧乳腺癌(bilateral primary breast cancer,BPBC)患者的临床病理特征.方法 收集1971年1月-2011年11月间我院诊治的565例双乳癌患者临床资料.对比分析同时性双乳癌(bilateral synchronous breast cancer)和异时性双乳癌(bilateral asynchronous breast cancer)在发病年龄、发病间隔、月经情况、家族史、肿瘤体积、临床分期、淋巴结数目、激素受体等临床病理特征的差异.结果 异时性双乳癌首发癌年龄要早于同时性双乳癌(P<0.05).同时性/异时性双乳癌在家族史、肿瘤体积、临床分期、腋淋巴结数目方面的差异均无统计学意义(P>0.05).同时性双乳癌两侧病灶内分泌受体表达一致率高于异时性双乳癌(P<0.01).无论同时性或异时性双乳癌其第二癌的肿瘤体积、临床分期和腋淋巴结情况都优于第一癌.同时性双乳癌与异时性双乳癌5年无病生存率与10年总生存率之间的差异有统计学意义(P<0.01).结论 双侧原发性乳腺癌第二癌与第一癌可视为两个完全不同的癌灶.单侧发生乳癌之后对侧乳癌发生的累积危险度逐年增加,应建立完善的随访制度.异时性双乳癌的5年无病生存率与10年总生存率均高于同时性双乳癌.%Objective To investigate the clinical and pathological features of primary bilateral breast cancer (BPBC). Methods Medical records of BPBC patients were reviewed from the Tianjin Medical University Cancer Institute and Hospital during 1. 1971-11. 2011 Data of the synchronous and asynchronous breast cancer were analyzed,including the age of tumor onset, the time interval between two cancer, menstruation, family history,the size of tumor,clinical stage,pathologic characteristics. Results First cancer onset age of the asynchronous breast cancer was earlier than that of synchronous breast cancer(P0. 05). The concordance rate of endocrine receptors in synchronous was higher than that in

  12. Primary extranodal non-Hodgkin′s lymphoma: A retrospective analysis of its clinicopathological features and treatment outcomes in a tertiary cancer center of eastern India

    Directory of Open Access Journals (Sweden)

    Biswamit Bhattacharya

    2013-01-01

    Full Text Available Background: Primary extranodal non-Hodgkin′s Lymphomas (NHL is an uncommon entity. It is diverse in its presentation, morphology, histology, and immunophenotyping. No clear-cut consensus exists regarding its management. Indian data is lacking regarding biology and treatment of disease. Aim: The aim of this study is to analyze the clinicopathological features and assess treatment modalities utilized and their outcomes in patients with primary extranodal NHL and also the outcome with involved field radiotherapy (IFRT. Settings and Design: This is a retrospective observational study from prerecorded hospital data. Materials and Methods: Cases of primary extranodal NHL attending the radiotherapy outpatient department of our institute during the last 5 years (July 2007-June 2012 were taken for this study. Hospital recorded data were taken and analyzed regarding the demography, clinical features, histopathological features, and treatment modalities and their outcomes. Result: Total 41 patients were identified, out of which six patients did not turn up for any form of treatment. Almost all patients (33 out of 35, 94.28% received chemotherapy while around 55% (19 out of 35 patients received radiotherapy. During follow-up, around 23% patients had relapsed, that too mostly outside the primary site. Conclusion: Immunohistochemistry is essential in all cases to identify the subset which would respond excellently to rituximab (CD20 positive. IFRT has definite role in the management of extranodal NHL in patients having residual disease following chemotherapy.

  13. Developments in Colorectal Cancer Screening

    Science.gov (United States)

    ... on. Feature: Colorectal Cancer Developments in Colorectal Cancer Screening Summer 2016 Table of Contents Dr. Asad Umar, ... know to help determine the best colon cancer screening test for them? Colonoscopy is considered the gold ...

  14. Radionuclide Bone Imaging Features of Bone Metastasis from 158 Patients of Esophageal Cancer%158例食管癌骨转移核素骨显像特征分析

    Institute of Scientific and Technical Information of China (English)

    丁忠旗; 张俊; 盛强; 姚圣华; 骆佩芳

    2012-01-01

    目的探讨食管癌骨转移患者的核素骨显像特征及临床应用。方法收集我院2007年1月至2011年12月接受全身骨显像的158例食管癌患者病历资料。对全身骨显像结果进行统计和分析,归纳食管癌患者骨转移显像特点。结果 158例食管癌患者骨转移发生率为17.72%(28/158),其中以脊柱及肋骨转移最为多见,发生率分别为89.29%(25/28),64.29%(18/28)。依据病理类型,鳞癌、腺癌、小细胞癌的骨转移发生率分别为13.83%(13/94),21.95%(9/41)和26.09%(6/23)。结论放射性核素骨显像对食管癌患者具有重要的临床意义,应作为治疗前后骨转移诊断和随访的常规检查手段。%Objective To investigate radionuclide bone imaging features and its clinical value in esophageal cancer patients with bone metastasis.Methods The medical records of 158 patients with esophageal cancer who accepted the whole body bone scan(WBS) from January 2007 to December 2011 in our hospital were collected.The WBS results were statistically analyzed,and the imaging features were summarized.Results The bone metastasis incidence of 158 cases of esophageal cancer patients was 17.72%(28/158).The spine and rib metastasis were the most common,the rate was 89.29%(25/28) and 64.29%(18/28),respectively.According to the pathological type,the bone metastasis incidence of squamous cell carcinoma,adenocarcinoma,small cell carcinoma was 13.83%(13/94),21.95%(9/41) and 26.09%(6/23),respectively.Conclusion Radionuclide bone imaging has important clinical value in patients with esophageal cancer.It should serve as a routine means of diagnosis and follow-up of bone metastases before or after treatment of patients.

  15. ANALYSIS OF CT FEATURES OF NON SMALL CELL LUNG CANCER OF DIFFERENT PATHOLOGICAL TYPES%不同病理类型非小细胞肺癌CT征象分析

    Institute of Scientific and Technical Information of China (English)

    辛玉静; 王胜林; 李桂萍

    2015-01-01

    目的::分析不同病理类型非小细胞肺癌的CT征象。方法:回顾分析117例(鳞癌60例、腺癌57例)非小细胞肺癌的CT征象。结果:腺癌磨玻璃密度影、毛刺征、胸膜凹陷征、血管集束征、支气管气象出现率明显高于鳞癌(P<0.05);鳞癌空洞、坏死、支气管截断以及远端阻塞性炎症、不张的出现率明显高于腺癌(P<0.05)。腺癌、鳞癌患者年龄、平扫CT值、强化增值,分叶征、小泡征、棘突征、钙化出现率比较差异无统计学意义(P>0.05)。结论:不同病理类型非小细胞肺癌的CT征象存在差异,可作为临床初步诊断的客观依据之一,但在临床工作中需仔细加以鉴别诊断。%[ABSTRACT]Objective: To analyze the CT features of non small cell lung cancer of different pathological types. Methods: The CT features of 117 cases non small cell lung cancer patients (squamous carcinoma 60 cases, adenocarcinoma 57 cases) were retrospectively analyzed.Results: In adenocarcinoma, the occurrence rate of ground glass opacity, speculation, pleural indentation, vascular convergence sign, air-bronchogram were obviously higher than squamous carcinoma (P0.05).Conclusions: The CT features of non small cell lung cancer of different pathological types are different, which can be used as one of the objective evidence of clinical preliminary diagnosis, but still need carefully differential diagnosis.

  16. Zone-size nonuniformity of {sup 18}F-FDG PET regional textural features predicts survival in patients with oropharyngeal cancer

    Energy Technology Data Exchange (ETDEWEB)

    Cheng, Nai-Ming [Chang Gung Memorial Hospital and Chang Gung University, Departments of Nuclear Medicine, Taiyuan (China); Chang Gung Memorial Hospital, Department of Nuclear Medicine, Keelung (China); National Tsing Hua University, Department of Biomedical Engineering and Environmental Sciences, Hsinchu (China); Fang, Yu-Hua Dean [Chang Gung University, Department of Electrical Engineering, Taiyuan (China); Lee, Li-yu [Chang Gung University College of Medicine, Department of Pathology, Chang Gung Memorial Hospital, Taoyuan (China); Chang, Joseph Tung-Chieh; Tsan, Din-Li [Chang Gung University College of Medicine, Department of Radiation Oncology, Chang Gung Memorial Hospital, Taoyuan (China); Ng, Shu-Hang [Chang Gung University College of Medicine, Department of Diagnostic Radiology, Chang Gung Memorial Hospital, Taoyuan (China); Wang, Hung-Ming [Chang Gung University College of Medicine, Division of Hematology/Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital, Taoyuan (China); Liao, Chun-Ta [Chang Gung University College of Medicine, Department of Otolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital, Taoyuan (China); Yang, Lan-Yan [Chang Gung Memorial Hospital, Biostatistics Unit, Clinical Trial Center, Taoyuan (China); Hsu, Ching-Han [National Tsing Hua University, Department of Biomedical Engineering and Environmental Sciences, Hsinchu (China); Yen, Tzu-Chen [Chang Gung Memorial Hospital and Chang Gung University, Departments of Nuclear Medicine, Taiyuan (China); Chang Gung University College of Medicine, Department of Nuclear Medicine and Molecular Imaging Center, Chang Gung Memorial Hospital, Taipei (China)

    2014-10-23

    The question as to whether the regional textural features extracted from PET images predict prognosis in oropharyngeal squamous cell carcinoma (OPSCC) remains open. In this study, we investigated the prognostic impact of regional heterogeneity in patients with T3/T4 OPSCC. We retrospectively reviewed the records of 88 patients with T3 or T4 OPSCC who had completed primary therapy. Progression-free survival (PFS) and disease-specific survival (DSS) were the main outcome measures. In an exploratory analysis, a standardized uptake value of 2.5 (SUV 2.5) was taken as the cut-off value for the detection of tumour boundaries. A fixed threshold at 42 % of the maximum SUV (SUV{sub max} 42 %) and an adaptive threshold method were then used for validation. Regional textural features were extracted from pretreatment {sup 18}F-FDG PET/CT images using the grey-level run length encoding method and grey-level size zone matrix. The prognostic significance of PET textural features was examined using receiver operating characteristic (ROC) curves and Cox regression analysis. Zone-size nonuniformity (ZSNU) was identified as an independent predictor of PFS and DSS. Its prognostic impact was confirmed using both the SUV{sub max} 42 % and the adaptive threshold segmentation methods. Based on (1) total lesion glycolysis, (2) uniformity (a local scale texture parameter), and (3) ZSNU, we devised a prognostic stratification system that allowed the identification of four distinct risk groups. The model combining the three prognostic parameters showed a higher predictive value than each variable alone. ZSNU is an independent predictor of outcome in patients with advanced T-stage OPSCC, and may improve their prognostic stratification. (orig.)

  17. The correlation between ultrasonographic findings and pathologic features in breast cancers%乳腺癌超声表现与其病理基础的相关性研究

    Institute of Scientific and Technical Information of China (English)

    张静雯; 周建桥; 詹维伟; 计静丹; 贾懿; 费晓春

    2011-01-01

    Objective To evaluate the correlation of features favoring malignant described in the ultrasonographic breast imaging reporting and data system ( BI-RADS )lexicon with the corresponding histopathological features of breast cancer. Methods From June 2010 to January 2011, a total of 139 tumors in 139 patients with pathologically confirmed breast cancer were included and retrospectively analyzed. Ultrasonographic findings were described using features from the ultrasonographic BI-RADS lexicon ( mass shape, margin, lesion bounder, echo pattern, and posterior acoustic features ) and analyzed with their corresponding histopathological features.Results For reflecting infiltration of carcinoma cells into the surrounding breast tissues, the irregular shape showed a sensitivity of 97. 3% and a specificity of 14. 8% , as compared with a sensitivity of 99. 1% and a specificity of 18. 5% without limited margin, while echogenic halo yielded a sensitivity of 76. 6% and a specificity of 80. 0% in predicting tumor cells infiltrated into the adjacent fatty and fibrous tissue with surrounding stromal hyperplasia. Approximately 92. 8% of the tumors were hypo-echoic , which were mainly determined by the ratio of carcinoma cells to stroma( P = 0.0126 ). Around 52. 5% of the tumors revealed no posterior acoustic features and 30. 9% demonstrated posterior shadowing, which were associated with both the number of collagenized fibroblastic stroma( P = 0.000 )and the ratio of carcinoma cells to stroma( P = 0.000 ). Conclusion These results demonstrated that there were good correlations between ultrasonographic BI-RADS indicators and histopathological findings. The breast cancer could be assessed by ultrasonographic BI-RADS.%目的 探讨提示肿块为恶性的超声BI-RADS描述术语与相关乳腺癌病理组织学特征的关系.方法 2010年6月至2011年1月我院经病理证实的139例乳腺癌患者的139个肿块,根据超声BI-RADS 指标(肿块形态,边缘,边

  18. Breast cancer staging

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000911.htm Breast cancer staging To use the sharing features on this ... Once your health care team knows you have breast cancer , they will do more tests to stage it. ...

  19. Prostate cancer staging

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000397.htm Prostate cancer staging To use the sharing features on this ... trials you may be able to join How Prostate Cancer Staging is Done Initial staging is based on ...

  20. Surgery for pancreatic cancer

    Science.gov (United States)

    ... medlineplus.gov/ency/article/007649.htm Surgery for pancreatic cancer To use the sharing features on this page, ... surgery are used in the surgical treatment of pancreatic cancer. Whipple procedure: This is the most common surgery ...

  1. Levels of v5 and v6 CD44 splice variants in serum of patients with colorectal cancer are not correlated with pT stage,histopathological grade of malignancy and clinical features

    Institute of Scientific and Technical Information of China (English)

    Bogdan Zalewski

    2004-01-01

    AIM: This study was designed to compare the levels of v5and v6 splice variants of CD44 evaluated using ELISA test in the serum of patients with colorectal cancer in different stages of progression of the disease estimated in pT stage according to WHO score, histopathological grade of malignancy and some clinicopathological features.METHODS: The serum obtained from 114 persons with colorectal adenocarcinomas was examined using ELISA method. pT stage and grade of malignancy of the tumour were examined in formalin fixed and paraffin embedded materials obtained during operation.RESULTS: Only the level of CD44 v5 in the serum of patients before operation with G2 pT4 tumour was lower than that in other probes and the difference was statistically significant.We did not find any other correlations between the level of v5 and v6 CD44 variants and other evaluated parameters.CONCLUSION: The level of CD44 v5 and v6 estimated by ELISA test in the serum can not be used as a prognostic factor in colorectal cancer.

  2. 骨转移前列腺癌的临床诊治研究报道%Clinical features and management of prostate cancer with bone metastases: the first report of our Institute

    Institute of Scientific and Technical Information of China (English)

    Zhijian Shen; Honglin Xie; Chaojun Wang; Songliang Cai; Liping Xie; Suo Wang; Zhigen Zhang

    2008-01-01

    Objective: To summarize the experience of diagnosis and treatment outcomes for bone metastatic prostate cancer. Methods: A retrospective study with a total of 128 prostate cancer (Pca) was performed from 2000 to 2005, in our institute. We analyzed the clinical features and outcomes of patients with bone metastases and the data and follow-up of 63 bone metastases was collected by one registrar. Cochran Armitage trend test was used for statistic analysis and a P-value of < 0.05 was taken as statistically significant. Results: The mean age was 73 (range 55 to 87) years. The PSA level was from 0.083 ng/mL to 6462 ng/mL. Bone metastases morbidity had good relationship with PSA level. With the mean follow up of 30 (range 6 to 72) months for 52/63 (82.5%) patients, 15 (28.8%) died from Pea with a mean survival of 21 months and 1 patient with PSA less than 4 ng/mL at the time died from cerebrovascular suddenness 6 months post-treatment. Conclusion: The early effect of endocrine treatment for bone metastases is obvious, and palliative prostatectomy is satisfactory and able to improve the quality of life rapidly for patients with obstructive symptoms.

  3. Clinicopathological features and prognosis of early gastric cancer%早期胃癌的临床病理特征及预后分析

    Institute of Scientific and Technical Information of China (English)

    李腾飞; 刘鹏飞; 项斌

    2013-01-01

    目的 探讨和总结早期胃癌(early gastric cancer,EGC)的临床病理特征,并分析其与患者预后之间的关系,研究EGC淋巴转移的规律.方法 回顾性分析1990年1月-2005年12月152例EGC的临床病理资料及其对预后的影响.结果 肿瘤大小、浸润深度及淋巴转移与EGC预后相关.结论 淋巴转移是影响EGC预后的关键因素,肿瘤大小、浸润深度、分化程度是EGC淋巴转移的独立危险因子,术前对这些因素的评估有助于选择合理的治疗方案.

  4. 超声下乳腺癌腋下淋巴结转移的图像特征分析%Ultrasonographic Features of Axillary Lymph Node Metastasis in Breast Cancer

    Institute of Scientific and Technical Information of China (English)

    孙薇薇

    2015-01-01

    Objective To analyze the ultrasonographic features of axillary lymph node metastasis in breast cancer. Methods A retrospective analysis was conducted on 101 cases of patients with breast cancer,and the ultrasonographic features of axillary lymph node metastasis in breast cancer were summarized.Results Single factor analysis showed that calcification,tumor number,maximum diameter and richness of blood flow between axillary lymph node metastasis positive or negative patients had significant difference(P<0.05).Multiple-factor Logistic regression analysis showed that the number of tumors of multiple or dif-fuse,calcification,rich blood levelⅡtoⅢlevel and the maximum diameter of more than 2 cm were the independent risk factors that lead to axillary lymph node metastasis positive (P<0.05).Conclusion The number of tumors of multiple or diffuse,calci-fication,rich blood levelⅡtoⅢlevel and the maximum diameter of more than 2 cm are the high risk factors lead to axillary lymph node metastasis,which should be considered so as to improve the accuracy of the ultrasonic inspection.%目的:探讨超声下乳腺癌腋下淋巴结转移的图像特征。方法回顾性分析101例乳腺癌患者临床资料,总结腋下淋巴结转移的超声图像特征。结果单因素分析发现腋下淋巴结转移病理阳性和病理阴性的患者在钙化灶、肿瘤数量、最大径及血流丰富程度等方面差异有统计学意义(P<0.05)。 Logistic回归分析发现肿瘤数量多发或弥散、有钙化灶、血流丰富程度Ⅱ~Ⅲ级以及最大径>2 cm是腋下淋巴结转移病理阳性的独立危险因素(P<0.05)。结论对肿瘤数量多发或弥散、有钙化灶、血流丰富程度Ⅱ~Ⅲ级以及最大径>2 cm乳腺癌患者行超声检查时应综合考虑以提高腋下淋巴结转移的正确率。

  5. Overexpression of CDC25B, CDC25C and phospho-CDC25C (Ser216) in vulvar squamous cell carcinomas are associated with malignant features and aggressive cancer phenotypes

    International Nuclear Information System (INIS)

    CDC25 phosphatases are important regulators of the cell cycle. Their abnormal expression detected in a number of tumors implies that their dysregulation is involved in malignant transformation. However, the role of CDC25s in vulvar cancer is still unknown. To shed light on their roles in the pathogenesis and to clarify their prognostic values, expression of CDC25A, CDC25B and CDC25C in a large series of vulvar squamous cell carcinomas were examined. Expression of CDC25A, CDC25B, CDC25C and phosphorylated (phospho)-CDC25C (Ser216) were examined in 300 vulvar carcinomas using immunohistochemistry. Western blot analysis was utilized to demonstrate CDC25s expression in vulvar cancer cell lines. Kinase and phosphatase assays were performed to exclude cross reactivity among CDC25s isoform antibodies. High nuclear CDC25A and CDC25B expression were observed in 51% and 16% of the vulvar carcinomas, respectively, whereas high cytoplasmic CDC25C expression was seen in 63% of the cases. In cytoplasm, nucleus and cytoplasm/nucleus high phospho-CDC25C (Ser216) expression was identified in 50%, 70% and 77% of the carcinomas, respectively. High expression of CDC25s correlated significantly with malignant features, including poor differentiation and infiltration of vessel for CDC25B, high FIGO stage, presence of lymph node metastases, large tumor diameter, poor differentiation for CDC25C and high FIGO stage, large tumor diameter, deep invasion and poor differentiation for phospho-CDC25C (Ser216). In univariate analysis, high expression of phospho-CDC25C (Ser216) was correlated with poor disease-specific survival (p = 0.04). However, such an association was annulled in multivariate analysis. Our results suggest that CDC25C and phospho-CDC25C (Ser216) play a crucial role and CDC25B a minor role in the pathogenesis and/or progression of vulvar carcinomas. CDC25B, CDC25C and phospho-CDC25C (Ser216) were associated with malignant features and aggressive cancer phenotypes. However, the

  6. Clinicopathological features of renal cancer in different ages%不同年龄段肾细胞癌患者临床病理特点分析

    Institute of Scientific and Technical Information of China (English)

    王清海; 李亚健; 樊华; 石冰冰; 李汉忠

    2013-01-01

    Objective To investigate the clinical pathological characteristics of different age group of patients with renal malignant tumor.Methods We analyzed the clinical and pathological data of 2 268 patients with renal malignant tumor admitted in PUMC hospital from 2002 to 2012.Patients were grouped according to age and pathological type.Results Among the 2 268 RCC patients,there was 260(11.5%),1178(51.9%),and 830(36.6%)patients aged < 40,40 ~ 59 and over 60 years old respectively.There was no significant differences in tumor size,and TNM stage by age group.However,patients under 40 were significantly more likely to present with symptomatic tumors.There was no significant differences in histology by age; The surgical treatment of kidney cancer patients of different age groups was in different ways and the percentage of patients treated with partial nephrectomy declined with age.Conclusions The health examination of the youth crowd should be strengthened.the main form of treatment for kidney cancer is radical surgery,but we also should pay attention to nephron sparing surgery.%目的 探讨不同年龄段肾癌患者的临床病理特点.方法 分析北京协和医院2002-2012年收治的2 268例肾癌患者的临床病理资料,根据年龄及病理类型分为不同的组别进行分析.结果 2 268例肾癌病例中<40岁,40~59岁和60岁以上患者数目分别为260(11.5%),1 178(51.9%)和830(36.6%).不同年龄组间患者肿瘤大小及TNM分期无差异.但是,在有临床表现的病例中,<40岁患者组中的症状性肾癌发生率较高;不同年龄组间肾癌的病理学类型无显著性差异.此外,比较年轻患者多采用肾部分切除术,年龄较高患者多采用肾癌根治术.结论 应重视对青年人群的健康体检,肾癌治疗的主要方式仍是根治性手术,但应重视保留肾单位手术.

  7. Câncer ano-reto-cólico: aspectos atuais III - câncer de reto - terapêutica neoadjuvante Anal canal and colorectal cancer: current features III - rectal cancer - neodajuvant chemoradiation

    Directory of Open Access Journals (Sweden)

    Júlio César M Santos Jr

    2008-03-01

    Full Text Available O tratamento cirúrgico do câncer de reto era feito por meio de operação via abdominal se o tumor estivesse no terço superior ou abdominoperineal, se o tumor estivesse no terço médio ou inferior, era associado à radioterapia e/ou a quimioterapia. A preservação do esfíncter anal, pelos princípios cirúrgicos vigentes, era limitada e destinava-se aos tumores que estavam acima do alcance do toque digital. As anastomoses baixas, ensaiadas em doenças benignas, foram introduzidas para o câncer, mas somente ganharam destaques com grampeadores mecânicos. Avanços posteriores incorporaram novas concepções sobre a anatomia cirúrgica do reto e seus aspectos oncológicos, provocando alterações operatórias cujos resultados promoveram revisão de conceitos e emancipação da terapêutica. O arsenal farmacológico foi tão ampliado e enriquecido, que o embaraço atual está em escolher e testar as drogas oncológicas disponíveis. Paralelamente aos aceleradores lineares, os avanços na área de computação e produção de imagens radiológicas possibilitaram o planejamento tridimensional do segmento anatômico a ser atingido, com ganhos valorosos para a radioterapia. O maior desafio no tratamento do câncer de reto, superado os aspectos físicos e cirúrgico-anatômicos, continua sendo o controle da recidiva local, ainda que bem inferiores aos observados no passado. Esse progresso ocorreu graças ao avanço tecnológico das imagens ultra-sonográficas e da ressonância magnética que, no campo propedêutico, vêm aprimorando o estadiamento do tumor; à maior definição do uso da terapêutica neo-adjuvante, à técnica cirúrgica de excisão total do mesorreto e ao apuro manual dos cirurgiões.The management of locally advanced rectal cancer was done by surgery followed by radiotherapy and/or 5-fluorouracil chemotherapy. Anterior resection with sphincter-sparing was devised for removal malignant disease on the upper third of rectum and

  8. Características mamográficas do câncer de mama associadas aos polimorfismos GSTM1 e GSTT1 Polymorphisms GSTM1 and GSTT1 and sporadic breast cancer mammographic features

    Directory of Open Access Journals (Sweden)

    Lívia Martins Tavares Scianni Morais

    2008-02-01

    deletions have been associated to increased risk of many cancers, including breast cancer. OBJECTIVE: To evaluate the occurrence of homozygous deletions of the GSTM1 and GSTT1 genes in women with sporadic breast cancer and in women without cancer and to compare breast cancer mammographic features between patients with and without these deletions. METHODS: The study evaluated 100 patients with sporadic breast cancer treated from September 2004 to June 2005 and 169 women without cancer, determining the frequency of the above-mentioned deletions by PCR and calculating the odds ratios and their 95% confidence intervals. Medical files and mammograms of 100 patients with breast cancer were evaluated and correlated with mammographic features such as density, mammographic findings and the BI-RADS classification. These findings were correlated with the genetic deletions by the PR (Prevalence-Ratio with their respective 95% confidence intervals. RESULTS: The GSTM1 gene was deleted in 40% of the cancers and in 44.4% of controls (OR = 1.20; CI 95% 0.70 - 2.04; p=0.5659 while the GSTT1 gene was deleted in 20% and 19.5%, respectively (OR = 0.73; CI 95% 0.37-1.44; p=0.4124. High mammographic density had been associated with GSTM1 deletion (PR 2.43; CI 1.11 to 4.08. GST deletions were not associated with predominant mammographic findings and the BI-RADS classification. CONCLUSION: GSTM1 homozygous deletion was associated with high mammographic density.

  9. 经支气管镜确诊的2168例肺癌的临床特点分析%Analysis of Clinical Features of 2 168 Confirmed Cases of Lung Cancer Diagnosed by Bronchoscopy

    Institute of Scientific and Technical Information of China (English)

    张宇; 于力克; 谢海燕; 胡韦华; 郝可可; 夏宁

    2011-01-01

    Objective To investigate the clinical characteristics of confirmed cases of lung cancer diagnosed by bronchoscopy. Methods A retrospective analysis was conducted to study the clinical features such as gender,age,pathologic type,lesion location,bronchoscopic image and sampling method of 2,168 confirmed cases of lung cancer diagnosed by bronchoscopy. Results The sex ratio (M/F) was 4.8 : 1 and the peak incidence was between 60 to 69 years of age. The most common pathologic type was squamous cell carcinoma (44.56%),followed by adenocarcinoma (25.92%) and small cell lung cancer (18.27%). Squamous cell carcinoma had the highest incidence rate (50.61%) a-mong men,while adenocarcinoma had the highest rate among women (56.18%). The positive rates diagnosed by forceps biopsy,brush biopsy,bronchial alveolar lavage and transbronchial needle aspiration were 81.60%,49.37%, 18.24% and 62.65% respectively. The positive rate by forceps biopsy combined with brush was 89.06%. Conclusion Bronchoscopy is an important approach in the diagnosis of lung cancer. The incidence and pathologic type of lung cancer vary depending on age and gender. Bronchoscopy and improving biopsy technique can markedly increase the diagnostic rate and help in early diagnosis of lung cancer.%分析经支气管镜确诊肺癌的临床特点.方法 回顾性分析经支气管镜确诊为肺癌的2 168例患者的性别、年龄、病理类型、病变部位、镜下表现、取材方法等特点.结果 该组患者男女比例为4.8:1,60~69岁为发病年龄高峰.鳞癌是最主要的病理类型(占44.56%),其次为腺癌(占25.92%)和小细胞癌(占18.27%).男性鳞癌发病率最高(占50.61%),女性腺癌发病率最高(占56.18%).钳检、刷检、支气管肺泡灌洗、经支气管镜针吸的诊断阳性率分别为81.60%、49.37%、18.24%和62.65%,钳检联合刷检阳性率为89.06%.结论 支气管镜检查是诊断肺癌的重要手段.不同年龄、不同性别的肺癌患者发病不同,病

  10. Analysis of the Clinical Feature of 383 Patients with Lung Cancer%383例原发性支气管肺癌临床特征的分析研究

    Institute of Scientific and Technical Information of China (English)

    黎银焕; 周燕斌; 黄琬玲; 蔡兴东; 曾庆理; 黄丽霞

    2011-01-01

    Objective To understand the clinical feature of lung cancer.Methods The clinical data of 383 lung cancer patients who registered in our hospital between 2007 and 2008 were analyzed retrospectively.Results The median age of lung cancer patients was 59 years old.50.1% of them had a history of smoking,among 93.8% were males.Coughing,expectoration,emaciation, hemoptysis, chest pain and dyspnea were the most common symptoms.The levels of serum neuron-specific enolase (NSE) and cytokeratin 19 fragment( CYFRA21-1 ) in males were higher than those in females, and the levels of serum CYFRA21-1 in senile were higher than those in non-senile.The levels of serum NSE and CYFRA21-1 in smokers were higher than those in non-smokers ,while they were higher in patients with central type than those in patients with peripheral type.The levels of serum NSE in small cell lung cancer patients were higher than those in non-small cell lung cancer patients.The levels of serum carcinoembryonic antigen (CEA) in patients with adenocarcinoma were higher than those in patients with squamous cell carcinoma,while the levels of serum CYFRA21-1 were higher in the latter.The more advanced the disease was,the higher the levels of serum CEA, NSE and CYFRA21-1 were.Carcinoma was most commonly seen in the upper lobes of both sides of the lungs.68.6%of lung cancer belonged to peripheral type.Adenocarcinoma and squamous cell carcinoma were the most common pathological type.66.0% of lung cancer patients were in advanced stage when diagnosed, and 55.5% had metastasis to mediastinal lymph nodes.Bones were the most common sites of metastasis.Conclusion The clinical manifestations were various in lung cancer patients,most of whom were in advanced stage when diagnosis was confirmed.Thus our knowledge to the disease should be enhanced,and early diagnosis for lung cancer should be made.The combined detection of serum CEA,NSE and CYFRA21-1 could be helpful to identify the histological types and stages of

  11. Carcinomas mamários de tipo basal: perfil clínico-patológico e evolutivo Basal-like breast cancers: clinicopathological features and outcome

    Directory of Open Access Journals (Sweden)

    Marina De Brot

    2009-01-01

    . Clinical, histopathological and survival data were obtained. A tissue microarray containing 2 cylinders from each tumor was constructed and immunohistochemistry for estrogen receptor (ER, progesterone receptor (PR, HER2, cytokeratins (CK 5 and 14, EGFR, p63, and p53 was performed. We considered basal like-cancers (BLC those tumors that were ER/PR/HER2-negative and CK5-positive. RESULTS: We found 105 cases of BLC from 140 triple-negative tumors (frequency=75.0%. The mean age at diagnosis was 54.8 years-old and 34.3% were premenopausal women. The majority of tumors were high grade (83.7% and of ductal/no-special-type (80.8%. Triple-negative tumors showed immunoreactivity for CK5 (75.0%, CK14 (29.0%, EGFR (28.6%, p63 (28.6%, and p53 (67.1%. Tumor size larger than 5cm was observed in 41 cases (39.0% and axillary metastases were detected in 61 patients (59.2%. Follow-up was recorded for 89 patients (mean=51 months: 45 patients (50.5% with no evidence of disease; 6 patients (6.7% were alive with disease; and 38 patients (42.6% died of the disease. Relapse was detected in 42 women (47.1%, lungs, brain, and bones being the most common sites of metastasis. The mean overall survival was 36 months and the mean disease-free interval was 28 months. CONCLUSION: Our findings confirmed that BLC are poor prognosis and highly-frequent carcinomas among triple-negative tumors, similar to data previously reported in North American and European patients.

  12. 周围型肺癌伴薄壁空腔的CT表现与征象分析%CT features in peripheral lung cancer with thin-walled cavity

    Institute of Scientific and Technical Information of China (English)

    于晶; 王亮; 伍建林; 葛莹; 李雪莹; 李笑迎; 王旭

    2015-01-01

    目的:探讨周围型肺癌伴薄壁空腔形成的CT表现与征象特点,提高对该类型肺癌的认识和诊断准确性。方法回顾性分析经手术和(或)病理证实的周围型肺癌伴空腔形成患者31例[男18例、女13例;平均年龄(56±12)岁]。31例患者中,肺腺癌28例、鳞状细胞癌2例、肉瘤样癌1例。所有患者均行MSCT检查,并分析肺癌实性与空腔病灶的CT征象,包括空腔与肺癌实体病灶位置关系、腔壁厚度及均匀度、内壁结节、外壁有无血管影相贴、腔内有无分隔、气-液平面以及动态变化等。结果(1)肺癌实体病灶:多见于两肺中上叶占67.7%(21/31),分叶征、毛刺征与血管集束征分别占87.1%(27/31)、67.7%(21/31)和51.6%(16/31);20例(64.5%)表现为磨玻璃密度结节(GGN),其中纯GGN者占11例(35.5%)。(2)空腔病灶:病灶直径为(2.7±1.3)cm;位于实性病灶周边者26例(83.9%),其中外侧及上、下外侧者20例(64.5%);壁较均匀17例(54.8%),壁厚<2 mm占51.6%(16例),2~3 mm占32.3%(10例);伴内壁结节5例(16.1%),外壁见相贴或推移血管者12例(38.7%);均未见气-液平面,27例(87.1%)腔内见粗细不均间隔或细小血管影。结论周围型肺癌伴薄壁空腔形成者绝大多数见于腺癌,其薄壁空腔的CT表现具有一定特征,有助于提示该类型肺癌的临床诊断。%Objective To study the CT features of peripheral lung cancer with thin-walled cavity, and to improve the understanding and diagnostic accuracy of this type of lung cancer. Methods Thirty-one patients (male:18, female:13, average age(56 ± 12)years old) with surgically proven peripheral lung cancer with thin-walled cavity were studied retrospectively. There were 28 cases of adenocarcinoma, 2 cases of squamous cell carcinoma and 1 case of sarcomatoid carcinoma. All patients had MSCT examination, and the CT

  13. Clinicopathologic Features of Lung Cancer in Young Adult That Younger than 40 Years Old%40岁以下青年支气管肺癌的临床病理特征分析

    Institute of Scientific and Technical Information of China (English)

    朱江; 周娟

    2015-01-01

    Objective To analyze the clinicopathologic features of lung cancer in young adult that younger than 40 years old. Methods From January 2010 to January 2013 in the Affiliated Hospital of Nantong University and its Branch Hospital,a total of 45 adult lung cancer patients that younger than 40 years old were selected as A group,and a total of 45 adult lung cancer patients that aged over 40 years old were selected as B group. Clinical data of the two groups were retrospectively analyzed,including gender,smoking index,clinical manifestations,misdiagnosis rate,incidence of depression,pathological types,radical operation and prognosis(one-year and two-year survival rate). Results The proportion of male,smoking index≥400 and performed as chest pain, misdiagnosis rate, incidence of depression and adenocarcinoma, radical operation rate,one-year and two - year survival rate of A group were statistically significantly than those of B group ( P 40岁的中老年支气管肺癌患者45例作为中老年组。回顾性分析两组患者的临床资料,包括性别、吸烟指数、临床表现、误诊情况、抑郁症状伴随情况、病理类型、根治手术实施情况、预后情况等,其中预后情况包括1年生存率和2年生存率。结果青年组患者男性、吸烟指数≥400年支、临床表现为胸痛者所占比例及误诊率、抑郁症状发生率、腺癌发生率、实施根治手术率、1年生存率、2年生存率均高于中老年组( P<0.05)。结论40岁以下青年支气管肺癌多见于男性,吸烟率高和误诊率高,常伴有抑郁症状,主要临床表现为胸痛,病理类型以腺癌为主,治疗以根治手术为主且预后良好。

  14. 第二原发非小细胞肺癌病理特点与临床分析%Clinical pathological features and prognosis of 44 pateints with second primary non small cell lung cancer

    Institute of Scientific and Technical Information of China (English)

    李晓燕; 高丽珍; 王维威; 汤传昊; 郭万峰; 高红军; 刘晓睛

    2011-01-01

    Objective To study the characteristics of clinical pathology, diferrential diagnosis, treatment, and prognosis of second primary lung cancer. Methods Forty - four cases from January. 1995 to October. 2010 were reviewed, including 24 males and 20 females. Epidemiological data,occurrence regularity,clinical and pathological features were summarized. The diagnosis,treatment, and prognosis of the second primary non - small cell lung cancer were retrospectively analyzed. Results There were 12 synchronous carcinomas and 32 metachromous ones. The median age of morbility was 54 years and the median interval time between two tumors was 28 months. New nodules in the lung whose thoratic CT images manifested spiculate, tabulated, fusional mediastinum lymph nodes denoted mostly primary lung cancer. The immunohistochemistry marker TTF - 1 or CK7 positive was conducive to the diagnosis as primary lung cancer. Nineteen cases remained alive and the longest survival time was 86 months. Twelve patients treated with EGFR - TKIs had longer survival than those without EGFR -TKIs(26.5 m vs 15.0 m, P = 0.038). Conclusions The treatment and prognosis of the second primary lung cancer are different from those of the recurring and metastatic malignancies and should be handled with care. Those patients who survive longer have benefited from active and comprehensive treatment.%目的 为第二原发非小细胞肺癌的诊断及规范治疗提供参考.方法 收集我院1995-01至2010-10期间收治的44例第二原发非小细胞肺癌患者的临床资料,总结其发病及临床病理特点,分析第二原发肺癌的诊断、治疗及预后影响因素.结果 44例第二原发非小细胞肺癌患者中,男24例,女20例;第二原发肺癌的发病中位年龄为54岁;同时性癌12例,异时性癌32例,两次原发癌的中位间隔时间为28个月.肺部新发结节表现为“毛刺、分叶及纵隔淋巴结融合肿大”等影像学特征及TTF-1(+),CK7 +/CK20-等病理学特

  15. Study on the features of psychosocial behavioural problems and family function of child with cancer%恶性肿瘤患儿心理行为问题及家庭功能特征研究

    Institute of Scientific and Technical Information of China (English)

    孙玉倩; 孙秉赋; 温颖娜; 崔颖; 郝晶; 张小丽; 丁焕然; 王凤玲

    2013-01-01

    Objective To explore the features of psychosocial behavioural problems and family function of child with cancer.Methods Cluster random sampling was conducted to recruit 240 caregivers whose children with cancer in 8 general hospitals in Beijing and Tangshan from 2012 to 2013.Achenbach Child Behavior Checklist (CBCL) and Feetham Family Functioning Survey (FFFS)were used to investigate.Results The rate of abnormal behavior was higher in cancerous child (25.4%) than that in healthy child (12.97%) (P < 0.05).The total score of FFFS(1.41 ± 0.75),the score of the relationship between the family and broader social units (2.21 ± 1.08) and the score of the relationship between the family and each individual (1.25 ± 0.89) were higher in cancerous child than that in healthy child (P < 0.05).The predictors for child' s psychosocial behavioral problems were gender,duration of illness for > 3years,and lower relationships between the family and each individual (P <0.05).Conclusion Healthcare professionals should actively provide family support to improve family functioning and decrease psychosocial behavioural in child with cancer.%目的 探讨恶性肿瘤患儿的心理行为问题及家庭功能特征.方法 采取整群随机抽样方法,抽取2012年6~ 12月在北京市4家、唐山市4家三级甲等医院内就诊的白血病等恶性肿瘤患儿的母亲或父亲240名为研究对象,采用Achenbach儿童行为量表(Chiild Behavior Checklist,CBCL)和Feetharn家庭功能量表(Feetham Family Functioning Survey,FFFS)进行调查.结果 恶性肿瘤患儿的心理行为问题检出率为25.4%,高于国内常模(12.97%)(P<0.05);患儿的FFFS总均分[(1.41±0.75)分]、家庭与社会关系[(2.21±1.08)分]和家庭与个体关系[(1.25±0.89)分]高于正常儿童家庭(P<0.05);患儿为男孩、患病时间>3年、家庭与个体关系低下的患儿容易发生心理行为问题(P<0.05).结论 恶性肿瘤患儿的心理行为问题检出

  16. Research on the Clinical Features of Lung Cancer in Young and Elder Patients%青年肺癌与老年肺癌临床特点研究

    Institute of Scientific and Technical Information of China (English)

    王永; 唐鹏飞; 杨玉蓉

    2012-01-01

    目的 探讨青年肺癌和老年肺癌的临床特点,为青年肺癌的诊断提供依据.方法 采用回顾性分析的方法,将2005年1月-2010年3月收治的28例40岁以下青年肺癌患者作为观察组,按1:3比例随机抽取同期确诊为肺癌且年龄>60岁的老年患者84例作为对照组,对比两组临床资料.结果 观察组和对照组咳嗽、胸痛、胸闷或气急发生率比较差异均有统计学意义(P<0.05).两组影像学检查比较差异无统计学意义(P>0.05).观察组吸烟者吸烟指数(10.1±4.5)包年,对照组吸烟者吸烟指数(33.3±11.7)包年,两组比较差异有统计学意义(P<0.01).两组患者均经过支气管镜活检、刷检、淋巴结穿刺活检、经皮肺穿刺活检、胸腔积液中找癌细胞、痰液找癌细胞及术后病理等方式确诊,两组比较差异均无统计学意义(P>0.05).两组非小细胞肺癌、小细胞肺癌TNM分期比较差异均无统计学意义(P>0.05).两组病理类型和分化程度比较差异均有统计学意义(P<0.05).观察组主要误诊为肺结核、肺炎、支气管炎及结核性胸膜炎,对照组主要误诊为肺炎、支气管炎及支气管扩张,两组误诊为肺结核率比较差异有统计学意义(P<0.01).两组治疗均以辅助治疗(放疗、化疗等)为主,其次为手术为主的综合治疗,两组治疗情况比较差异无统计学意义(P>0.05).结论 青年肺癌临床特点不典型,易误诊漏诊,医生要高度重视、提高认识,充分利用多种检查手段综合分析以提高青年肺癌的诊断准确率,做到早发现、早诊断、早治疗,才能有效提高患者生存率,延长生存期.%Objective To explore the clinical features of lung cancer in young and elder patients. Methods Retrospective analysis was used in the study of 28 lung cancer patients below 40 years old admitted since January 2005 were involved as observation group, and 84 lung cancer patients above 60 years old randomly

  17. The correlations between the MRI features of breast cancer and molecular biological behavior%乳腺癌MRI特征与分子生物学行为的相关性研究

    Institute of Scientific and Technical Information of China (English)

    杨爱萍; 蔡忠刚

    2014-01-01

    目的:探讨乳腺癌MRI特征与ER、PR、Her-2、Ki-67表达及淋巴结转移的相关性,为乳腺癌的疗效评价提供依据。方法28例乳腺癌患者行MR平扫、MR动态增强( MR-DCE)及弥散加权成像( DWI),分析MRI成像特征(大小、边缘、强化、TIC类型、ADC值),并与肿瘤标记物( ER、PR、Her-2、Ki-67)表达、淋巴结转移进行相关性分析。结果①肿瘤标记物的表达及淋巴结转移:ER 阳性19例(67.86%)、PR 阳性18例(64.29%)、Her-2阳性15例(53.6%)、Ki-67阳性17例(60.71%)、淋巴结转移14例(50%)。②肿块型和非肿块型组、环形强化和非环形强化组与肿瘤标记物表达、淋巴结转移比较,差异无统计学意义。③肿瘤最大径>2 cm和≤2 cm组比较,Her-2阳性表达率差异有统计学意义(χ2=5.073,P<0.05);毛刺征和非毛刺征两组比较,PR阳性表达率差异有统计学意义(χ2=6.857, P<0.05)。④淋巴结转移率在TICⅡ型与Ⅲ型组比较,差异有统计学意义(χ2=7.337,P<0.05);ADC值在Her-2阳性和阴性组间比较,差异有统计学意义(t=5.624,P<0.01)。结论乳腺癌MRI征象(大小、毛刺征、TIC类型、ADC值)与肿瘤标记物(PR、Her-2)表达、淋巴结转移具有较高的相关性,分析MR征象有助于乳腺癌疗效的评价。%Objective To investigate the correlation between the MRI features of breast cancer and expression of ER, PR, HER-2, Ki-67 and lymph node metastasis, so as to provide basis for therapeutic evaluation of breast cancer.Methods We carried out MR plain scan, MR dynamic enhancement ( MR-DCE) and diffusion weighted imaging on 28 breast cancer patients;analyzed MRI ima-ging features ( size, edge, enhancement, TIC type and ADC value);and conducted correlation analysis with expression of tumor mark-ers ( ER, PR, Her-2, ki-67) and lymph node metastasis

  18. Psychometric features of the body image after breast cancer questionnaire-Chinese version in women with breast cancer%乳腺癌患者体像问卷中文版的试用结果分析

    Institute of Scientific and Technical Information of China (English)

    张劲强; 朱熊兆; 唐利立; 陈干农; 王瑜萍; 杨玉玲; 李玲艳

    2014-01-01

    目的:探讨乳腺癌患者体像问卷中文版(the body image after breast cancer questionnaire-Chinese version,BIBCQ-C)在我国女性乳腺癌患者中的适用性.方法:545名女性乳腺癌患者完成BIBQ-C问卷、医院焦虑抑郁问卷,间隔4周后随机选取31名受试者进行BIBCQ-C问卷重测.结果:BIBCQ-C总量表的Cronbach's α系数为0.90,6个因子的α系数为0.62~0.87;总量表的条目间平均相关系数为0.16,6个分量表的条目间平均相关系数为0.21~0.57;总量表及6个因子的重测信度均在0.6以上;验证性因素的分析结果支持该量表的6因子结构;BIBCQ-C总量表与抑郁和焦虑症状得分呈显著相关(r=0.20,0.21,P<0.01).结论:乳腺癌患者体像问卷中文版具有良好的信度和效度,能够有效评估乳腺癌患者的体像状况.

  19. Cancer Stem Cells, Cancer Cell Plasticity and Radiation Therapy

    OpenAIRE

    Vlashi, Erina; Pajonk, Frank

    2014-01-01

    Since the first prospective identification of cancer stem cells in solid cancers the cancer stem cell hypothesis has reemerged as a research topic of increasing interest. It postulates that solid cancers are organized hierarchically with a small number of cancer stem cells driving tumor growth, repopulation after injury and metastasis. They give rise to differentiated progeny, which lack these features. The model predicts that for any therapy to provide cure, all cancer stem cells have to be ...

  20. Identifying cancer genes from cancer mutation profiles by cancer functions

    Institute of Scientific and Technical Information of China (English)

    LI YanHui; GUO Zheng; PENG ChunFang; LIU Qing; MA WenCai; WANG Jing; YAO Chen; ZHANG Min; ZHU Jing

    2008-01-01

    It is of great importance to identify new cancer genes from the data of large scale genome screenings of gene mutations in cancers. Considering the alternations of some essential functions are indispensable for oncogenesis, we define them as cancer functions and select, as their approximations, a group of detailed functions in GO (Gene Ontology) highly enriched with known cancer genes. To evaluate the efficiency of using cancer functions as features to identify cancer genes, we define, in the screened genes, the known protein kinase cancer genes as gold standard positives and the other kinase genes as gold standard negatives. The results show that cancer associated functions are more efficient in identifying cancer genes than the selection pressure feature. Furthermore, combining cancer functions with the number of non-silent mutations can generate more reliable positive predictions. Finally, with precision 0.42, we suggest a list of 46 kinase genes as candidate cancer genes which are annotated to cancer functions and carry at least 3 non-silent mutations.

  1. Clinical features and prognosis of malignant ovarian endometriosis and ovarian cancer%卵巢子宫内膜异位症恶变与卵巢癌的临床特征比较及预后分析

    Institute of Scientific and Technical Information of China (English)

    宋梅; 丁朝霞; 郑迎春

    2015-01-01

    目的:比较分析卵巢子宫内膜异位症(EMs)恶变与卵巢癌的临床特征及预后。方法选择由 EMs 恶变而来的卵巢癌病例共43例(研究组),另选择该组病例具有相同组织学亚型的卵巢癌病例共86例为对照组。比较两组的临床特征并随访。结果研究组年龄﹤40岁患者的比率显著高于对照组,术前 CA125水平正常的患者比率显著高于对照组,化疗周期≥6周期的患者比率显著高于( P ﹤0.05)。研究组患者中 FIGO 分期 I 期者比率较高,对照组则 III 期的比率高。研究组3年生存率为83.33%(35/42)高于对照组69.41%(59/85),但差异无统计学意义(χ2=2.984,P =0.015)。将两组合并后对影响生存率的因素进行 COX 回归分析发现,FIGO 分期、是否 EMs 恶变、化疗周期是影响卵巢癌患者生存的因素。结论 EMs 恶变是影响卵巢癌患者预后的重要危险因素,EMs 恶变而来的卵巢癌相对预后略好,但仍应争取早期治疗。%Objective To investigate the clinical features and prognosis of malignant ovarian endometriosis and ovarian cancer. Methods A total of 43 cases of malignant ovarian cancer from EMs were collected for study group and the other patients with ovarian cancer were selected at same histological subtype as the control group. Clinical characteristics were compared and follow - up. Results In the study group,proportion of age ﹤ 40 years were significantly higher,preoperative normal CA125 levels was significantly higher,proportion of FIGO stage I was higher in the study group. In the control group,proportion of stage III patients was high. In the study group,patients with proportion of chemotherapy cycles ≥6 was significantly higher. 3 - year survival rate in study group was 83. 33%(35 / 42),which was higher than the control with 69. 41%(59 /85),but the difference was not statistically significant(log - rank χ2 = 2. 984,P = 0. 015). After the

  2. The clinical features and prognosis of 77 patients of breast cancer during pregnancy and lactation%77例妊娠哺乳期乳腺癌的临床特点及预后分析

    Institute of Scientific and Technical Information of China (English)

    梁艳; 张丽娜; 杨艳芳; 顾林

    2015-01-01

    Objective To explore the clinical features and prognostic factors of breast cancer during pregnancy and lactation.Methods A retrospective analysis was performed on 77 patients admitted to the Tianjin Cancer Hospital from January 2002 to December 2012.According to when the cancer was found,these patients were divided into the pregnancy group (n =23) and the lactation group (n =54).Survival rate was calculated by life table,Multivariate factors for survival were analyzed by COX proportional hazards regression model.Results The mean maximum diameter of the tumor was 5.9 cm,49 cases had axillary lymph node metastasis.Compared with the lactation group,the patients in pregnancy group had larger tumor diameter,the mean diameter was 6.8 cm (P =0.031).The median follow-up time was 39 months and 5-year disease-free survival (DFS) rate and 5-year overall survival (OS) rate were 52.6% and 61.8%,respectively.Multivariate analysis showed that the independent factors of DFS and OS were breastfeeding and tumor size.Conclusions Diagnosis of breast cancer daring pregnancy and lactation were usually delayed and often in late TNM stage.Breastfeeding and tumor size are independent prognostic factors.%目的 分析妊娠哺乳期乳腺癌的临床特征及预后因素.方法 回顾性分析天津市肿瘤医院2002年1月至2012年12月期间收治的77例患者的临床资料.根据发病时期将其分为妊娠期组(n=23)和哺乳期组(n=54).寿命表法计算生存率,COX比例风险回归模型进行多因素生存分析.结果 全组肿瘤平均最大直径5.9cm,腋窝淋巴结阳性49例.与哺乳期乳腺癌患者相比,妊娠期乳腺癌患者肿瘤直径更大,平均为6.8 cm(P =0.031).中位随访时间39个月,5年无病生存率和5年总生存率分别为52.6%和61.8%.多因素分析显示,影响患者无病生存和总生存的独立预后因素均为哺乳与否和肿瘤大小.结论 妊娠哺乳期乳腺癌延误诊断率高,TNM分期晚,预后较差,哺乳与

  3. Relationship between nuclear morphometrical quantitative analysis and clinicopathological features of breast cancer%乳腺癌细胞核形态定量分析与临床病理特征的关系

    Institute of Scientific and Technical Information of China (English)

    王健; 孟刚; 周晓蝶

    2014-01-01

    Purpose To measure the nuclear morphological parameters of breast cancer to study the relationship between nuclear mor-phological parameters and ER, PR, HER-2 expression, and clinicopathologic features of breast carcinoma. Methods 388 cases of breast cancer specimens were collected and molecular classification was made according to ER, PR and HER-2 expression. the nucleus parameters were measured by image analysis software after HE staining. The difference among groups was statistically analysed, and follow-up was done by phone or by hospitalization. Results Among the 4 groups of breast cancer case, the differences of circle diame-ter, area and perimeter edges of the nucleus were statistically significant (P<0.05). Nuclear morphometric quantitation between ER+/PR+ patients and ER-/PR- patients was statistically significantly differentice (P<0.05). The majority of patients with ER-/PR- were histological gradeⅢand poor survival rate (P<0.05). The disease-free survival in Luminal A type was higher than that of Basal-like type (P<0.05), and its overall survival was higher than HER-2 over-expression (P<0. 05) and Basal-like type (P<0.05) . Conclusion The nucleus morphological quantitation in breast cancer is of significant difference, which has certain reference value in its molecular typing. The result of ER, PR and HER-2 expression, combined with nuclear morphology measurement, are meaningful to the treatment and assessment of prognosis.%目的:观察乳腺癌细胞核形态参数,探讨其与ER、PR、HER-2表达和临床病理特征的关系。方法收集388例乳腺癌标本,根据ER、PR和HER-2三种抗体的免疫组化标记结果,将乳腺癌分为管腔A( Luminal A)型、管腔B( Luminal B)型、HER-2过表达型和基底细胞样( Basal-like)型,各组行HE染色后通过图像分析软件测量细胞核参数,应用统计学分析各组间的差异,并通过电话或住院病例随访。结果各组乳腺癌细胞核等圆直径、面积

  4. 肺内孤立性薄壁囊腔型肺癌的螺旋CT表现%SPIRAL CT FEATURES OF SOLITARY THIN-WALLED CYSTIC LUNG CANCER

    Institute of Scientific and Technical Information of China (English)

    王大鹏; 苑欣然; 左玉强

    2016-01-01

    目的:分析肺内孤立性薄壁囊腔型肺癌的螺旋CT影像特征,提高对该病的诊断水平。方法:本研究中把螺旋CT影像上表现为囊腔状且其75%以上囊壁厚度小于4 mm的肺癌定义为薄壁囊腔型肺癌。回顾性分析13例经手术或穿刺病理证实的肺内孤立性薄壁囊腔型肺癌的螺旋CT影像资料。结果:本组13例病例中,10例呈现囊腔壁厚度不均,9例可见短毛刺征,7例可见壁结节形成,增强扫描时壁结节呈不同程度对比强化,7例可见胸膜凹陷/增厚等异常改变,5例呈囊内壁不光滑及腔内可见血管穿行,3例病灶边缘可见分叶征;病理结果显示其中11例为腺癌,1例为支气管肺泡癌,1例为鳞癌。结论:肺内孤立性薄壁囊腔型肺癌的影像学表现具有一定特征性,主要表现为囊壁厚度不均、短毛刺征、壁结节形成、胸膜改变及囊内壁不光滑等。%Objective:To analyse the spiral CT features of pulmonary solitary thin-walled cystic lung cancer and improve the diagnosis accuracy. Methods:We defined a cavitary lesion with a wall thickness of 4 mm or less at least 75%of the circumference of the lesion as thin-walled cystic lung cancer. 13 cases of the pulmonary solitary thin-walled cystic lung cancer proved by pathology were examined with spiral CT in retrospectively. Results:In 13 cases,there were 10 cases with cystic wall uneven,9 cases with speculation sign,7 cases with mural nodules which had been enhanced when go through the enhanced scanning,7 cases with pleural indentation or pleural thickening,5 cases showed the inner wall was irregular and blood vessel passing through the cystic,3 cases with lobulation sign. The pathologic results showed 11 cases were adenocarcinoma,1 case was bronchioloalveolar carcinoma and 1 case was squamous carcinoma. Conclusion:The spiral CT imaging of pulmonary solitary thin-walled cystic lung cancer show some characteristics, such as the wall thickness uneven

  5. Prominent feature selection of microarray data

    Institute of Scientific and Technical Information of China (English)

    Yihui Liu

    2009-01-01

    For wavelet transform, a set of orthogonal wavelet basis aims to detect the localized changing features contained in microarray data. In this research, we investigate the performance of the selected wavelet features based on wavelet detail coefficients at the second level and the third level. The genetic algorithm is performed to optimize wavelet detail coefficients to select the best discriminant features. Exper-iments are carried out on four microarray datasets to evaluate the performance of classification. Experimental results prove that wavelet features optimized from detail coefficients efficiently characterize the differences between normal tissues and cancer tissues.

  6. Trends in Streamflow and Nutrient and Suspended-Sediment Concentrations and Loads in the Upper Mississippi, Ohio, Red, and Great Lakes River Basins, 1975-2004

    Science.gov (United States)

    Lorenz, David L.; Robertson, Dale M.; Hall, David W.; Saad, David A.

    2009-01-01

    Many actions have been taken to reduce nutrient and suspended-sediment concentrations and the amount of nutrients and sediment transported in streams as a result of the Clean Water Act and subsequent regulations. This report assesses how nutrient and suspended-sediment concentrations and loads in selected streams have changed during recent years to determine if these actions have been successful. Flow-adjusted and overall trends in concentrations and trends in loads from 1993 to 2004 were computed for total nitrogen, dissolved ammonia, total organic nitrogen plus ammonia, dissolved nitrite plus nitrate, total phosphorus, dissolved phosphorus, total suspended material (total suspended solids or suspended sediment), and total suspended sediment for 49 sites in the Upper Mississippi, Ohio, Red, and Great Lakes Basins. Changes in total nitrogen, total phosphorus, and total suspended-material loads were examined from 1975 to 2003 at six sites to provide a longer term context for the data examined from 1993 to 2004. Flow-adjusted trends in total nitrogen concentrations at 19 of 24 sites showed tendency toward increasing concentrations, and overall trends in total nitrogen concentrations at 16 of the 24 sites showed a general tendency toward increasing concentrations. The trends in these flow-adjusted total nitrogen concentrations are related to the changes in fertilizer nitrogen applications. Flow-adjusted trends in dissolved ammonia concentrations from 1993 to 2004 showed a widespread tendency toward decreasing concentrations. The widespread, downward trends in dissolved ammonia concentrations indicate that some of the ammonia reduction goals of the Clean Water Act are being met. Flow-adjusted and overall trends in total organic plus ammonia nitrogen concentrations from 1993 to 2004 did not show a distinct spatial pattern. Flow-adjusted and overall trends in dissolved nitrite plus nitrate concentrations from 1993 to 2004 also did not show a distinct spatial pattern. Flow-adjusted trends in total phosphorus concentrations were upward at 24 of 40 sites. Overall trends in total phosphorus concentrations were mixed and showed no spatial pattern. Flow-adjusted and overall trends in dissolved phosphorus concentrations were consistently downward at all of the sites in the eastern part of the basins studied. The reduction in phosphorus fertilizer use and manure production east of the Mississippi River could explain most of the observed trends in dissolved phosphorus. Flow-adjusted trends in total suspended-material concentrations showed distinct spatial patterns of increasing tendencies throughout the western part of the basins studied and in Illinois and decreasing concentrations throughout most of Wisconsin, Iowa, and in the eastern part of the basins studied. Flow-adjusted trends in total phosphorus were strongly related to the flow-adjusted trends in suspended materials. The trends in the flow-adjusted suspended-sediment concentrations from 1993 to 2004 resembled those for suspended materials. The long-term, nonmonotonic trends in total nitrogen, total phosphorus, and suspended-material loads for 1975 to 2003 were described by local regression, LOESS, smoothing for six sites. The statistical significance of those trends cannot be determined; however, the long-term changes found for annual streamflow and load data indicate that the monotonic trends from 1993 to 2004 should not be extrapolated backward in time.

  7. Pautas de crecimiento de la población en la región de Murcia, 1975-2004. Dinamismo y debilidades. Algunas consideraciones

    Directory of Open Access Journals (Sweden)

    José Ma. Serrano Martínez

    2004-01-01

    Full Text Available Durante las últimas tres décadas la población regional ha aumentado con intensidad, más que nunca en su historia reciente. Junto al incremento natural se ha registrado un cambio de signo migratorio. La llegada de inmigrantes, sobre todo extranjeros, ha sido una causa fundamental que ha contribuido a ello. Se analizan las razones que han favorecido el ascenso demográfi co así como la estructura básica del ciclo económico expansivo que ha impulsado ese incremento de la población. Se advierten notables debilidades en su modelo productivo. Son numerosas las dudas planteadas cara al futuro; todo lo cual aconseja refl exionar sobre él. Acaso se trata de un ciclo difícil de mantener, pero no es sencillo ofrecer respuestas adecuadas que corrijan las defi ciencias y presenten una alternativa real y factible.

  8. 乳腺癌患者发病年龄和临床病理学参数的相关性研究%Association between age and clinicopathological features of breast cancer patients

    Institute of Scientific and Technical Information of China (English)

    王宁; 王斌; 王雅杰

    2011-01-01

    Objective In this study, firstly the optimal age at diagnosis was identified to differentiate the early-onset breast cancer patients. The associations between the age at diagnosis and clinicopathological features were analyzed. Methods Two thousand two hundred and thirty-two cases with invasive breast cancer in Changhai Hospital of Shanghai were analyzed, which were stratified into 6 groups by age range of 5 years from 30 to 50 years and justified which age was the best resection for association between histologic grade and HER-2. In addition, the association between early-onset breast cancer and other clinicopathological factors were analyzed.Results The association between histologic and HER-2 was only seen in women age < 35 years. The early-onset breast cancer were more likely HER-2 overexpression, large tumor size, high istologic grade, and JCC stage. Conclusion The early-onset breast cancer in our study was defined as age at diagnosis < 35 years old. The early-onset breast cancer in Shanghai was characterized by larger tumor, more lymph node metastasis, later stage, HER-2 overexpression and absent hormonal receptor expression.%目的 根据乳腺癌组织病理学分级和HER-2过表达状态,研究早发性乳腺癌的分类方法及与早发性乳腺癌有关的临床病理学参数.方法 选取2000年1月之后就诊于长海医院乳腺癌患者2232例,按照每增加5岁为一个发病年龄分层,分为<30岁、30~34岁、35~39岁、40~44岁、45~49岁和≥50岁6个层次.首先,研究不同发病年龄和组织病理学分级之间的关系,筛选出有意义的年龄层;然后,再将HER-2表达作为筛选因素,进一步剔除和HER-2表达状态无关的年龄层.通过两步筛选,在6个连续的发病年龄分层中选择与组织病理学3级和HER-2过表达有关的发病年龄分界点.最后,根据拟定的早发性乳腺癌的分类方法,综合分析与早发性乳腺癌有关的临床病理学参数.结果

  9. Cancer treatment: dealing with pain

    Science.gov (United States)

    ... ency/patientinstructions/000827.htm Cancer treatment: dealing with pain To use the sharing features on this page, ... health care provider about your options. What Causes Pain The pain from cancer can have a few ...

  10. 乳腺癌的分子分型与临床病理特征及预后的关系%Correlation of molecular subtypes with clinicopathologic features and prognosis in breast cancer

    Institute of Scientific and Technical Information of China (English)

    曹静; 吕志排; 雷冬梅; 楚天骄; 郝志伟

    2013-01-01

    Objective:To investigate the correlation between molecular subtypes,clinicopathologic features and prognosis in breast carcinoma.Methods:Data from 324 female patients with primary breast cancer admitted from Jan.2007 to Dec.2007 were retrospectively analyzed.According to immunohistochemical markers,324 cases of breast cancer were classified into four different subtypes:Luminal A,Luminal B,HER2/neu and basal-like subtype.Relationships between molecular subtypes and clinicopathological characteristics were analyzed,and the disease free survival (DFS) was studied.Results:Molecular subtypes had no correlation with age,tumors size,lymph node metastasis in patients with primary breast cancer (P>0.05).However,there was a correlation of molecular subtypes with histological grade (P<0.05).Patients were followed up for 11~72 months.DFS had a correlation with lymph node metastasis and molecular subtypes (P<0.05),and had no correlation with age,tumors size and histological grade (P>0.05).There was a significant difference in DFS between different molecular subtypes (,P<0.05).Conclusions:Molecular classification can predict the prognosis of patient.Luminal A had a better prognosis than the other three types,and HER2/neu was the worst.%目的:探讨乳腺癌分子分型与临床病理特征及预后之间的关系.方法:回顾性分析2007年我院324例原发性乳腺癌患者的临床病理资料.根据免疫组化结果,将乳腺癌分为Luminal A型、Luminal B型、HER2/neu型及basal-like型.观察乳腺癌分子分型与临床病理特征间的相互关系,比较各型患者术后的无病生存期.结果:乳腺癌的分子分型与年龄分组、肿瘤直径、淋巴结转移无关,与组织学分级相关(P<0.05).患者随访11~72个月,无病生存期与年龄分组、组织学分级无关,与淋巴结转移状态、分子分型相关.不同分子分型患者间的无病生存期存在统计学差异.结论:乳腺癌的分

  11. Breast Cancer Metastasis to the Stomach Resembling Early Gastric Cancer

    OpenAIRE

    Eo, Wan Kyu

    2008-01-01

    Breast cancer metastases to the stomach are infrequent, with an estimated incidence rate of approximately 0.3%. Gastric metastases usually are derived from lobular rather than from ductal breast cancer. The most frequent type of a breast cancer metastasis as seen on endoscopy to the stomach is linitis plastica; features of a metastatic lesion that resemble early gastric cancer (EGC) are extremely rare. In this report, we present a case of a breast cancer metastasis to the stomach from an infi...

  12. Cancer Statistics: Endometrial Cancer

    Science.gov (United States)

    ... a third party. HPF: Did You Know? Endometrial Cancer Endometrial Cancer - Did you know that endometrial cancer ... mfhs0vbvWi8?rel=0 SEER Stat Fact Sheets: Endometrial Cancer Expand All Collapse All Lifetime risk estimates are ...

  13. 卵巢上皮性癌脐转移临床特征分析%Umbilicus metastasis in patients with epithelial ovarian cancer: clinical features of 21 patients

    Institute of Scientific and Technical Information of China (English)

    肖娟; 李俊东; 徐漫漫; 朱安娜; 冯艳玲

    2013-01-01

    目的 分析卵巢上皮性癌(EOC)脐转移的临床特点,探讨其发生率、诊断、治疗及预后相关因素.方法 回顾性分析1991年1月至2011年1月中山大学肿瘤防治中心收治的EOC患者2642例中经不同取材病理组织学确诊发生脐转移的21例患者的临床病理资料,21例年龄40~66岁.结果 EOC脐转移的发生率为0.79%.未控或复发转移至脐者较初始治疗时已有脐转移者预后差(22比6个月,P<0.01),行姑息或不规则治疗者较采取积极规范手术联合规则化疗者的预后差(21比4个月,P<0.01).脐转移的确诊时间及确诊后的治疗措施是影响预后的独立危险因素.结论 提高对EOC患者发生脐转移诊断的警惕性,综合评估病情及治疗耐受,采取积极的肿瘤细胞减灭术配合规则化疗为主的综合治疗有助于此类患者病情的控制并延长其生存时间.%Objective To analyze the clinical features,treatments and prognosis of patients with Sister Mary Joseph's nodule of umbilicus (SMJN) from epithelial ovarian cancer (EOC) patients.Methods Among a total of 2642 pathologically diagnosed EOC cases,21 cases with SMJN were histopathologically diagnosed and had an age range of 40-66 years at Sun Yat-sen University Cancer Center between January 1991 and January 2011.Their clinical data were retrospectively analyzed.Results The incidence of SMJN in EOC was 0.79%.The 1,2 and 5-year survival rates were 61.8%,26.8% and 9.5% respectively.The diagnosis was confirmed via local excision biopsy,fine-needle aspiration biopsy or gross pathological diagnosis.Univariate analysis showed that patients with progressive disease or relapsing with umbilical metastasis after treatment had worse prognosis than those diagnosed at pre-treatment (22 vs 6 months,P < 0.01).Patients with suboptional cytoreductive surgery and/or less than 6 circles of chemotherapy or palliative treatment had worse prognosis than those with optional cytoreductive

  14. Cancer - resources

    Science.gov (United States)

    Resources - cancer ... The following organizations are good resources for information on cancer : American Cancer Society -- www.cancer.org Cancer Care -- www.cancercare.org National Cancer Institute -- www.cancer.gov

  15. Cancer Statistics

    Science.gov (United States)

    ... What Is Cancer? Cancer Statistics Cancer Disparities Cancer Statistics Cancer has a major impact on society in ... success of efforts to control and manage cancer. Statistics at a Glance: The Burden of Cancer in ...

  16. Study on the clinicpathologic features of female sporadic basal-like breast cancer%女性散发性基底细胞型乳腺癌临床病理特征的研究

    Institute of Scientific and Technical Information of China (English)

    毛晓韵; 王欢; 范垂锋; 魏晶; 姚凡; 刘崇; 金锋

    2012-01-01

    目的:筛选女性散发性基底细胞型乳腺癌,探讨其临床病理特征.方法:用免疫组化结合荧光原位杂交的方法从500例女性散发性乳腺癌中筛选出基底细胞型乳腺癌,结合形态学及临床病理参数分析散发性基底细胞型乳腺癌的临床病理特征.结果:在500例乳腺癌中共筛出三阴性乳腺癌77例(15.4%),基底细胞型乳腺癌60例(12.0%).基底细胞型乳腺癌的病理组织学形态学与非基底细胞型乳腺癌并无明显差异.基底细胞型乳腺癌与非基底细胞型乳腺癌相比,其在发病年龄、发病时月经状态及肿瘤TNM分期并无明显统计学差异,二者在肿瘤大小及淋巴结转移上有统计学差异.结论:散发型基底细胞型乳腺癌倾向于原发灶较大,淋巴结转移多.%Objective: To screen female sporadic basal - like breast cancer and investigate the clinicopathological characters of basal - like breast cancer. Methods: To screen female sporadic basal - like breast cancer from 500 sporadic breast cancer by immunohistochemistry and fluorescence in situ hybridization and analyze the clinicopathological characters of basal - like breast cancer combined with morphological and clinicopathological factors. Results: Total of 77 cases of triple - negative breast cancer were screened out in 500 sporadic breast caner ( 77/500, 15. 4% ), 60 cases of sporadic basal - like breast cancer ( 60/500, 12. 0% ). There were no significant difference in morphology, age, menopausal status and tumor stage between basal - like breast cancer and non basal - like breast cancer. Statistical analysis revealed a significant difference in tumor size and lymph node metastasis between basal - like breast cancer and non basal - like breast cancer. Conclusion: Sporadic basal - like breast cancer associated with big tumor size and lymph node metastasis.

  17. 6 Common Cancers - Prostate Cancer

    Science.gov (United States)

    ... PSA tests. Read More "6 Common Cancers" Articles Lung Cancer / Breast Cancer / Prostate Cancer / Colorectal Cancer / Skin Cancer / Gynecologic Cancers Spring 2007 Issue: Volume 2 Number 2 Page 10 MedlinePlus | Subscribe | Magazine Information | Contact Us | Viewers & ...

  18. 6 Common Cancers - Colorectal Cancer

    Science.gov (United States)

    ... certain people. Read More "6 Common Cancers" Articles Lung Cancer / Breast Cancer / Prostate Cancer / Colorectal Cancer / Skin Cancer / Gynecologic Cancers Spring 2007 Issue: Volume 2 Number 2 Page 11 MedlinePlus | Subscribe | Magazine Information | Contact Us | Viewers & ...

  19. Gaussian Affine Feature Detector

    OpenAIRE

    Xu, Xiaopeng; Zhang, Xiaochun

    2011-01-01

    A new method is proposed to get image features' geometric information. Using Gaussian as an input signal, a theoretical optimal solution to calculate feature's affine shape is proposed. Based on analytic result of a feature model, the method is different from conventional iterative approaches. From the model, feature's parameters such as position, orientation, background luminance, contrast, area and aspect ratio can be extracted. Tested with synthesized and benchmark data, the method achieve...

  20. Laser therapy for cancer

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000905.htm Laser therapy for cancer To use the sharing features ... Lasers are also used on the skin. How Laser Therapy is Used Laser therapy can be used ...

  1. Prostate Cancer Foundation

    Science.gov (United States)

    ... Financials Our Leadership Leadership Team A Legacy of Leadership Featured ... Medicine Revolution Welcome to the world of precision medicine—where doctors can target each prostate cancer with new, more effective drugs. And this is just the beginning. Learn ...

  2. Parallel Feature Extraction System

    Institute of Scientific and Technical Information of China (English)

    MAHuimin; WANGYan

    2003-01-01

    Very high speed image processing is needed in some application specially for weapon. In this paper, a high speed image feature extraction system with parallel structure was implemented by Complex programmable logic device (CPLD), and it can realize image feature extraction in several microseconds almost with no delay. This system design is presented by an application instance of flying plane, whose infrared image includes two kinds of feature: geometric shape feature in the binary image and temperature-feature in the gray image. Accordingly the feature extraction is taken on the two kind features. Edge and area are two most important features of the image. Angle often exists in the connection of the different parts of the target's image, which indicates that one area ends and the other area begins. The three key features can form the whole presentation of an image. So this parallel feature extraction system includes three processing modules: edge extraction, angle extraction and area extraction. The parallel structure is realized by a group of processors, every detector is followed by one route of processor, every route has the same circuit form, and works together at the same time controlled by a set of clock to realize feature extraction. The extraction system has simple structure, small volume, high speed, and better stability against noise. It can be used in the war field recognition system.

  3. Cancer education in Ukraine

    OpenAIRE

    Chekhun, Vasyl F; Shepelenko, Iryna V

    2013-01-01

    The main features of the system of ‘higher medical education’ in Ukraine are presented. The principles of undergraduate, specialist training, and postgraduate education on oncology are described in detail and discussed in terms of European standards of cancer education. It is underlined that the cancer education in the system of higher and postgraduate education should be continuous, multidisciplinary, and of high quality.

  4. CIN-ful cancers.

    Science.gov (United States)

    Rajagopalan, Harith; Lengauer, Christoph

    2004-09-01

    Aneuploidy has long been recognized to be a cardinal feature of many neoplasias. However, the role of aneuploidy in tumorigenesis continues to be a matter of debate. We believe that aneuploidy in cancers is the result of chromosomal instability, a process in which dividing cancer cells segregate their chromosomes with decreased fidelity. Here we discuss our definition of chromosomal instability, evidence for its causal role in tumor development, and suggestions regarding the mechanisms that initiate chromosomal instability in cancer cells.

  5. MRI enhancement scanning features and pathology of the orthotropic transplantation nude mouse model with human pancreatic cancer%人胰腺癌原位移植模型MRI增强扫描特征及病理对照研究

    Institute of Scientific and Technical Information of China (English)

    王冬青; 何伟; 罗一烽; 孙维斌; 许云飞; 殷瑞根; 王铮超

    2011-01-01

    Objective To investigate the MRI imaging features, and pathologic basis of the orthotropic transplantation nude mouse model with human pancreatic cancer. Methods Adopting Siemens Magnetom Trio Tim 3.0 Tesla superconductive MRI and breast coil was used to examine 30 orthotropic transplantation nude mouse models of the human pancreatic cancer, these mouse were sampled to acquire TSE-T1 -weighted and T2-weighted transverse axial images. Intraperitoneal injection of Gd DTP A was used to perform continuous dynamic enhancement scanning. Signal intensities of tumors were measured in plain scanning and each phase' s enhancement scanning images, respectively. Intensification rates of tumors were calculated. Pathologic examination of tumors was performed to be compared with the findings of MRI scanning. Results The successful rate of inoculation of 30 nude mice was 100%. The histological findings were comparable with poorly differentiated adenocarcinoma. Compared with signal of adjacent tissues, the MRI findings of the tumors were uniformly slightly hypointensity (90% , 27/30) , or unevenly (10% , 3/30) on TSE-T1WI; uniformly (20% , 6/30) or unevenly (80% , 24/30) hyperintensity with equal or more hyper signal spots on TSE-T2WI. Signal intensities on plain scanning was 228.35 ±11.71, and 1.5,3,6,9, 12 min after enhancement scanning, thesignal intensities were 258.20 ± 11.17, 301.75 ± 17.09, 358.65 ±25.13, 480.05 ± 19.01, 558.35 ± 40.49, which were significantly higher than those in plain scanning (P <0.01). The intensification rate of every phase was 0.13 ±0.04, 0.35 ±0.11, 0.56 ±0.10, 1.10 ±0.10, 1.45 ±0.18, and the difference among these phases was statistically significant (P <0.01). The significantly intensified area was the area where the tumor cells grew actively with rich capillaries; the central area without intensification was the area of necrotic tissue and/or densely packed tumor cells and few capillaries. Conclusions High resolution MRI imaging of

  6. Vulva cancer

    Science.gov (United States)

    Cancer - vulva; Cancer - perineum; Cancer - vulvar; Genital warts - vulvar cancer; HPV - vulvar cancer ... cells. Other types of cancers found on the vulva are: Adenocarcinoma Basal cell carcinoma Melanoma Sarcoma Vulvar ...

  7. Colon cancer

    Science.gov (United States)

    Colorectal cancer; Cancer - colon; Rectal cancer; Cancer - rectum; Adenocarcinoma - colon; Colon - adenocarcinoma ... In the United States, colorectal cancer is one of the leading causes of deaths due to cancer. Early diagnosis can often lead to a complete cure. Almost ...

  8. Image Similarity to Improve the Classification of Breast Cancer Images

    OpenAIRE

    Dave Tahmoush

    2009-01-01

    Techniques in image similarity can be used to improve the classification of breast cancer images. Breast cancer images in the mammogram modality have an abundance of non-cancerous structures that are similar to cancer, which make classification of images as containing cancer especially difficult to work with. Only the cancerous part of the image is relevant, so the techniques must learn to recognize cancer in noisy mammograms and extract features from that cancer to appropriately classify ima...

  9. Lung Cancer:Symptoms, Diagnosis, Treatments & Research | NIH MedlinePlus the Magazine

    Science.gov (United States)

    ... of this page please turn Javascript on. Feature: Lung Cancer Lung Cancer: Symptoms, Diagnosis, Treatments & Research Past Issues / Winter 2013 ... lung cancer are given intravenously or by mouth. Lung Cancer Research The large-scale National Lung Screening Trial, ...

  10. Lung Cancer, Questions to Ask Your Health Professional | NIH MedlinePlus the Magazine

    Science.gov (United States)

    ... of this page please turn Javascript on. Feature: Lung Cancer Questions to Ask Your Health Professional Past Issues / ... answer questions about cancer at 1-800-4-CANCER. The NCI Lung Cancer Home Page provides up-to-date information ...

  11. Lung Cancer:Symptoms, Diagnosis, Treatments & Research | NIH MedlinePlus the Magazine

    Science.gov (United States)

    ... of this page please turn Javascript on. Feature: Lung Cancer Lung Cancer: Symptoms, Diagnosis, Treatments & Research Past Issues / Winter ... lung cancer are given intravenously or by mouth. Lung Cancer Research The large-scale National Lung Screening ...

  12. Understanding Cancer Prognosis

    Medline Plus

    Full Text Available ... Renal Cell) Cancer Leukemia Lung Cancer Lymphoma Pancreatic Cancer Prostate Cancer Skin Cancer Thyroid Cancer Uterine Cancer All ... Cancer Biology Cancer Genomics Causes of Cancer Diagnosis Prevention Screening & Early Detection Treatment Cancer & Public Health Cancer ...

  13. Stages of Prostate Cancer

    Science.gov (United States)

    ... Renal Cell) Cancer Leukemia Lung Cancer Lymphoma Pancreatic Cancer Prostate Cancer Skin Cancer Thyroid Cancer Uterine Cancer All ... Cancer Treatment Prostate Cancer Prevention Genetics of Prostate Cancer Prostate Cancer Screening Research Prostate Cancer Treatment (PDQ®)–Patient ...

  14. Mouse models of colorectal cancer

    Institute of Scientific and Technical Information of China (English)

    Yunguang Tong; Wancai Yang; H. Phillip Koeffler

    2011-01-01

    Colorectal cancer is one of the most common malignancies in the world. Many mouse models have been developed to evaluate features of colorectal cancer in humans. These can be grouped into genetically-engineered, chemically-induced, and inoculated models. However, none recapitulates all of the characteristics of human colorectal cancer. It is critical to use a specific mouse model to address a particular research question. Here, we review commonly used mouse models for human colorectal cancer.

  15. 70岁以上老年原发性肝癌患者临床特点%Clinical Features and Prognosis of Primary Liver Cancer in Elderly Patients Over 70 Years Old

    Institute of Scientific and Technical Information of China (English)

    韩璐; 戴广海; 汪进良; 孙刚

    2012-01-01

    Objective: To investigate the clinical characteristics, diagnosis, treatments and prognosis of Primary liver cancer (PLC) in patients over seventy years old. Methods: A total of eligible 70 PLC patients from a tertiary hospital were indentified from 2000 to 2010. The clinical data and follow-up information of these patients were reviewed and retrieved. We compared these clinical features in patients at an advanced age more than 70 year (≥70 group) and those less than 70 year old (<70 group). Results: 36 cases (51.4%) were in≥70 group and 34 (48.6%) in<70 group. Compared with younger patients, there were higher comorbid rates of cardiovascular disease (50.0% vs 17.6%) and diabetes mellitus (41.7% vs 14.7%), (P= 0.004-0.012) . However, the incidence of viral hepatitis type B (50.0% vs 88.2%,P=0.016) and diameter of PLC mass at the initial diagnose (3.4± 2.3cm vs 5.8± 4.4cm,P=0.02) were lower. There were no significant differences between two groups regarding baseline data including male sex, alcohol abuse, cerebrovascular disease, initial symptoms and physical signs, tumor location, tumor shape, AFP level, Child-Pugh score, and histopathologic results. Totally 59 cases (84.3%) received 3.2± 3.1times transarteria] chemoembolization (TACE). During the mean 28.9 months follow-up, survival outcomes showed that individual cumulative mortality (63.9% vs 58.8%, P= 0.66) and median survival duration (25.5 months vs 20.5 months, P = 0.88) were similar between two groups. Conclusion: Despite a higher comorbid rate of cardiovascular disease and diabetes mellitus, the curative TACE may still be feasible and provide survival benefits for major of PLC patients of advanced age more than 70 years old.%目的:探讨70岁以上高龄原发性肝癌患者临床表现、诊治方法和预后特点.方法:回顾性研究我院2000~2010年间70例原发性肝癌患者(PLC)临床资料,比较两组患者(≥70岁,高龄组;和<70岁,低龄组)的临

  16. Clinicopathologic Features of Colorectal Carcinoma in HIV-Positive Patients

    Science.gov (United States)

    Sigel, Carlie; Cavalcanti, Marcela S.; Daniel, Tanisha; Vakiani, Efsevia; Shia, Jinru; Sigel, Keith

    2016-01-01

    Background Emerging evidence suggests differences in colo-rectal cancer in HIV-infected patients (HIV+) compared with HIV− patients. Microsatellite instability (MSI), occurring in a subset of colorectal cancer, is present at a higher rate in certain cancers in HIV+ patients. Colorectal cancer with MSI share some characteristics with those reported for HIV+ colorectal cancer. On this premise, we studied clinical and pathologic features of HIV+ colorectal cancer and evaluated for MSI using matched HIV− colorectal cancer controls. Methods Two nested, matched cohorts were identified from a hospital-based cohort of colorectal cancer patients. HIV+ colo-rectal cancers were identified and random control patients were matched for selected characteristics. Mismatch repair protein (MMR) IHC was performed as the detection method for MSI. Variables were compared between cases and controls using fixed-effects logit modeling to account for matching. Results We included 184 colorectal cancer samples (38 HIV+, 146 HIV− control). Median patient age at colorectal cancer onset was 55. When compared with HIV− colorectal cancer, HIV+patients were more likely to have smoked (P = 0.001), have right-sided colorectal cancer (37% vs. 14%; P = 0.003), and tumor-infiltrating lymphocytes (TIL) above 50/10 high-power fields (21% vs. 7%). There was no difference in MMR protein expression (P = 0.6). HIV+ colorectal cancer patients had reduced overall survival (P = 0.02) but no difference in progression-free survival. Conclusions HIV+ patients developed colorectal cancer at a lower median age than population estimates, had a higher frequency of right-sided disease, and increased TILs, suggesting potential biologic differences compared with uninfected patients. Impact Clinicopathologic differences in colorectal cancer of HIV+ persons may have implications for tumor pathogenesis. PMID:27197294

  17. Clinicopathologic Features of Advanced Squamous NSCLC.

    Science.gov (United States)

    Socinski, Mark A; Obasaju, Coleman; Gandara, David; Hirsch, Fred R; Bonomi, Philip; Bunn, Paul; Kim, Edward S; Langer, Corey J; Natale, Ronald B; Novello, Silvia; Paz-Ares, Luis; Pérol, Maurice; Reck, Martin; Ramalingam, Suresh S; Reynolds, Craig H; Spigel, David R; Stinchcombe, Thomas E; Wakelee, Heather; Mayo, Carlos; Thatcher, Nick

    2016-09-01

    Lung cancer remains the leading cause of cancer-related death worldwide. NSCLC accounts for more than 85% of all lung cancers, and the prognosis for advanced-stage disease is typically poor. In recent years, the importance of histologic subtypes of NSCLC has been recognized, and the distinction between squamous and other NSCLC histologic subtypes is now critical to patient management. Squamous cell lung cancer (sqCLC) represents approximately 25% to 30% of NSCLC. The prognosis for patients with advanced NSCLC is poorer for those with sqCLC than for those with adenocarcinoma. This is partly due to a number of clinical characteristics that distinguish sqCLC from other NSCLC histologic subtypes, such as smoking history, comorbid diseases, age, and molecular profile. Together, these factors make sqCLC an especially challenging disease to manage. Herein, we review some of the key clinicopathologic features of sqCLC. Understanding these features to optimally address many of the unique therapeutic challenges of this disease is likely to be central to ultimately improving outcomes for patients with squamous NSCLC.

  18. Familial gastric carcinoma:an analysis of clinical features,related cancer types in southern China%我国家族性胃癌家系的临床病理特点及其相关肿瘤的分析

    Institute of Scientific and Technical Information of China (English)

    宋武; 何裕隆; 张常华; 蔡世荣; 周学付; 彭建军; 詹文华

    2008-01-01

    目的 研究我国南方家族性胃癌家系的发病特点和预后,及其家系中发生相关肿瘤的特点,探讨我国家族性胃癌的诊断和筛选方法.方法 通过家系调查,收集8个符合国际遗传性胃癌协作组制定的遗传性胃癌(ICG-HGC)家系和4个可疑ICG-HGC家系,绘制其家系图谱,分析其发病的病理特点及预后,同时了解其家族成员发生相关肿瘤的特点.结果 ICG-HGC家系和4个可疑ICG-HGC家系中共有肿瘤患者45例,发病年龄29~65岁,共有肿瘤病灶58个(包括1例多源癌),有胃癌病灶41个,其中胃病灶30个,以胃窦、体部为主,病理类型为中低分化腺癌;胃外肿瘤17个,其中结直肠肿瘤6个.11例先证者中根治术后4例生存时间大于3年,最长超过10年.结论 中国南方家族性胃癌表现为发病年龄轻,病理分化差,进展期胃癌常发生在远端胃,常伴发肠道肿瘤.遴选ICG-HGC家系时应注意与遗传性非息肉病性结直肠癌家系区分.%Objective To explore clinical features,prognosis and study related cancer types in patients with familial gastric carcinoma. Methods Nine families of ICG-HGC and 3 families of suspected-ICG-HGC according with International Collaborative Group on Hereditary Gastric Cancer standard were collected and their pedigree trees were drawn.Clincial features and prognosis of ICG-HGC and suspected-ICG-HGC families were analyzed.and the related cancer types of ICG-HGC and suspected-ICG-HGC kindreds were investigated. Resuits The morbidity of ICG-HGC and suspected-ICG-HGC was 0.99%;The age of patients among the propositi of 12 kindreds were 29~65 years old with the mean age of 56 years old.Among 11 kindreds,there were 45 cases of cancers including 2 cases of multiple cancers.There were 30 foci of gastric cancer,most of which were located in lower and middle third of the stomach,with pathologic type of adenocarcinoma in poor to moderate differentiation.There were totally 15 extrastomach tumors

  19. Feature selection in bioinformatics

    Science.gov (United States)

    Wang, Lipo

    2012-06-01

    In bioinformatics, there are often a large number of input features. For example, there are millions of single nucleotide polymorphisms (SNPs) that are genetic variations which determine the dierence between any two unrelated individuals. In microarrays, thousands of genes can be proled in each test. It is important to nd out which input features (e.g., SNPs or genes) are useful in classication of a certain group of people or diagnosis of a given disease. In this paper, we investigate some powerful feature selection techniques and apply them to problems in bioinformatics. We are able to identify a very small number of input features sucient for tasks at hand and we demonstrate this with some real-world data.

  20. Double trouble: para-neoplastic anti-PCA-2 and CRMP-5-mediated small fibre neuropathy followed by chorea associated with small cell lung cancer and evolving radiological features.

    Science.gov (United States)

    Waheed, Waqar; Boyd, James; Khan, Farrah; Mount, Sharon L; Borden, Neil M; Tandan, Rup

    2016-01-01

    Patients with Purkinje cell cytoplasmic autoantibody type 2 (PCA-2) and collapsin response-mediator protein-5 (CRMP-5) autoantibody can present with multifocal elements of encephalomyeloneuropathy. Except for an anecdotal report, case descriptions of paraneoplastic small fibre neuropathy are lacking. We report paraneoplastic small fibre neuropathy followed by chorea associated with small cell lung cancer. A man aged 57 years with a 35 pack-year smoking history presented with painless subacute paresthesia and weight fluctuation. A non-length-dependent small fibre neuropathy was confirmed by skin biopsy. Further testing revealed positive serum PCA-2 and CRMP-5 autoantibodies, which after positron emission tomography-CT led to histological confirmation of a small cell lung cancer. Initially, abnormal MRI and cerebrospinal fluid studies suggested central nervous system (CNS) involvement which was subclinical; however, 6 months later during antitumour therapy, the patient became symptomatic with choreoathetosis. After combined chemoradiation as well as immunosuppressive and symptomatic therapies, the clinical course stabilised, although residual neurological deficits remained at follow-up a year later. Coexistent PCA-2 and CRMP-5 autoantibodies may occur in the setting of small fibre peripheral neuropathy and choreoathetosis and predict cancer type. Two paraneoplastic syndromes can present successively over months; subclinical CNS involvement with evolving basal ganglia abnormalities can be a paraneoplastic manifestation. In the appropriate clinical setting, paraneoplastic testing should be considered in patients presenting with small fibre neuropathy. PMID:27571910

  1. Cancer stem cells, cancer cell plasticity and radiation therapy.

    Science.gov (United States)

    Vlashi, Erina; Pajonk, Frank

    2015-04-01

    Since the first prospective identification of cancer stem cells in solid cancers the cancer stem cell hypothesis has reemerged as a research topic of increasing interest. It postulates that solid cancers are organized hierarchically with a small number of cancer stem cells driving tumor growth, repopulation after injury and metastasis. They give rise to differentiated progeny, which lack these features. The model predicts that for any therapy to provide cure, all cancer stem cells have to be eliminated while the survival of differentiated progeny is less critical. In this review we discuss recent reports challenging the idea of a unidirectional differentiation of cancer cells. These reports provide evidence supporting the idea that non-stem cancer cells exhibit a remarkable degree of plasticity that allows them to re-acquire cancer stem cell traits, especially in the context of radiation therapy. We summarize conditions under which differentiation is reversed and discuss the current knowledge of the underlying mechanisms.

  2. Fingerprint Feature Extraction Algorithm

    Directory of Open Access Journals (Sweden)

    Mehala. G

    2014-03-01

    Full Text Available The goal of this paper is to design an efficient Fingerprint Feature Extraction (FFE algorithm to extract the fingerprint features for Automatic Fingerprint Identification Systems (AFIS. FFE algorithm, consists of two major subdivisions, Fingerprint image preprocessing, Fingerprint image postprocessing. A few of the challenges presented in an earlier are, consequently addressed, in this paper. The proposed algorithm is able to enhance the fingerprint image and also extracting true minutiae.

  3. Feature Model Differences

    OpenAIRE

    Acher, Mathieu; Heymans, Patrick; Collet, Philippe; Quinton, Clément; Lahire, Philippe; Merle, Philippe

    2012-01-01

    International audience Feature models are a widespread means to represent commonality and variability in software product lines. As is the case for other kinds of models, computing and managing feature model differences is useful in various real-world situations. In this paper, we propose a set of novel differencing techniques that combine syntactic and semantic mechanisms, and automatically produce meaningful differences. Practitioners can exploit our results in various ways: to understan...

  4. Fingerprint Feature Extraction Algorithm

    OpenAIRE

    Mehala. G

    2014-01-01

    The goal of this paper is to design an efficient Fingerprint Feature Extraction (FFE) algorithm to extract the fingerprint features for Automatic Fingerprint Identification Systems (AFIS). FFE algorithm, consists of two major subdivisions, Fingerprint image preprocessing, Fingerprint image postprocessing. A few of the challenges presented in an earlier are, consequently addressed, in this paper. The proposed algorithm is able to enhance the fingerprint image and also extractin...

  5. Oral Cancer

    Science.gov (United States)

    ... TMJ Disorders Oral Cancer Dry Mouth Burning Mouth Tooth Decay See All Oral Complications of Systemic Diseases Cancer ... Puts Someone at Risk? Possible Signs & Symptoms Early Detection About Oral Cancer Oral cancer includes cancers of ...

  6. The feature of 424 cases with gastric cancer of various nationalities in Xinjiang China%424例新疆不同民族胃癌特征分析

    Institute of Scientific and Technical Information of China (English)

    马玉花; 玛依努尔·艾力; 郑超; 包永星; 张华

    2012-01-01

    Objective; To investigate the clinicopathologic and epidemiological characteristics of patients with gas-tric cancer at our hospital in the past eight years. Methods; Data of 424 cases of gastric cancer patients from 2003 to 2010 in our hospital was retrospectively analyzed for their general information, tumor histologieal type, location, and clinical stage. Results: Among the 424 cases of gastric cancer patients,male to female ratio was 3. 36: 1 ;aged from 23 to 83 years old, with a median age of 61 , most were from 61 to 70;Borrmann ? type was majority pathologic type (78. 77% ) ;adenocarcinoma was a majority histologieal type,accounting for 81. 6% ;poorly and moderately differenti-ated cancer were most common. Stage H was majority in clinical TNM staging, accounting for 41. 0%. According to the ethnic group analysis, the cancer position was mainly on the lower part of stomach ( pylorus, antrum) of Han, while that of Uighur was mainly upper to the stomach (gastric body, gastric angle) ;compared with Han, Uighur had an earlier age of bracket and larger size of tumor;Uighurs tumor T stage and TNM stage were relatively late compared with the Han. Conclusion: Elderly men are more susceptible to gastric cancer, mainly histologieal pathology to poorly and moderately differentiated adenocarcinoma; There are different clinical characteristics between the various Ethnic groups patients with gastric carcinoma. The majority of patients who underwent the surgical treatments have advanced or metastatic tumor, therefore it is necessary to improve the early diagnosis of gastric cancer.%目的:了解近8年来就诊于我院的胃癌患者流行病学及临床病理资料的特点.方法:以我院2003年-2010年收治的行手术治疗的424例胃癌患者为研究对象,对其一般资料、病理类型、发生部位、临床分期等进行回顾性分析.结果:424例胃癌患者中,男女比为3.36∶1,年龄23-83岁,中位年龄61岁,高发年龄61-70岁.临床大体病

  7. Feature Technology in Product Modeling

    Institute of Scientific and Technical Information of China (English)

    ZHANG Xu; NING Ruxin

    2006-01-01

    A unified feature definition is proposed. Feature is form-concentrated, and can be used to model product functionalities, assembly relations, and part geometries. The feature model is given and a feature classification is introduced including functional, assembly, structural, and manufacturing features. A prototype modeling system is developed in Pro/ENGINEER that can define the assembly and user-defined form features.

  8. 6 Common Cancers - Breast Cancer

    Science.gov (United States)

    ... Home Current Issue Past Issues 6 Common Cancers - Breast Cancer Past Issues / Spring 2007 Table of Contents For ... slow her down. Photo: AP Photo/Brett Flashnick Breast Cancer Breast cancer is a malignant (cancerous) growth that ...

  9. Stars in Nutrition and Cancer Lecture Series | Division of Cancer Prevention

    Science.gov (United States)

    This lecture series features extraordinary contributors or "stars" in the field of cancer and nutrition research. Speakers highlight the important role that nutrition plays in modifying cancer development. Past lectures are videotaped and available for viewing. |

  10. 舟山海岛女性居民肺癌的流行病学特点分析%Epidemiological features of lung cancer among females in Zhoushan

    Institute of Scientific and Technical Information of China (English)

    李予林; 罗斌; 陈志军; 张永奎

    2015-01-01

    Objective To analyze systematically the risks and protective factors of lung cancer in female residents of Zhoushan,so as to provide evidence for early diagnosis and treatment of lung cancer.Methods A population-based case-control study involving interviews with 215 lung cancer female patients and 227 controls was carried out from October,2010 to October,2012.The subjects were interviewed and information about their exposure to related factors was surveyed with questionnaire.Statistical analysis by using single-factor and multivariate conditional Logistic regression was performed to determine causes and protective factors of lung cancer.Results Passive smoking index ≥ 50 man-years (OR =1.568,95% CI =25.134-63.327),loving to eat pickled products (OR =4.778,95% CI =3.462-784.219),frequent occupational exposure to dust (OR =3.543,95% CI =4.003-115.014) and excessive exposure to kitchen smog (OR =8.113,95%CI =0.135-0.763) could increase the risk of lung cancer.On the other hand,lovingto take vegetables (OR =0.030,95% CI =0.103-0.489),loving to eat eggs (OR =0.023,95% CI =3.132-56.427),loving to take shellfish (OR =0.743,95% CI =4.671-91.547),initial reproductive age between 20 and 30 (OR =0.032,95% CI =4.127-10.736) and high satisfaction with family life (OR =0.009,95% CI =0.581-8.169) were all protective factors against cancer risk.Conclusions Passive smoking,intake of pickled products,occupational exposure to dust and exposure to kitchen smog were all main risk factors for lung cancer among females in Zhoushan archipelago,while frequent intake of vegetables,seashells,eggs and high satisfaction with family life seemed to have protective effects on lung cancer.%目的 系统分析舟山海岛女性居民肺癌发生的流行病学特点,以便早期诊断与治疗.方法 2010年10月至2012年10月,在舟山海岛地区进行女性肺癌的病例对照研究,共调查女性肺癌病例215例及人群对照227例,对调查对象进行面对面问卷

  11. Cancer Statistics: Pancreas Cancer

    Science.gov (United States)

    ... qnad9A-rfcw?rel=0 SEER Stat Fact Sheets: Pancreas Cancer Expand All Collapse All Statistics at a ... 5 Years Or More after Being Diagnosed with Pancreas Cancer? Relative survival statistics compare the survival of ...

  12. Understanding Cancer Prognosis

    Medline Plus

    Full Text Available ... Types Recurrent Cancer Common Cancer Types Bladder Cancer Breast Cancer Colorectal Cancer Kidney (Renal Cell) Cancer Leukemia Lung ... Biology Cancer Genomics Causes of Cancer Diagnosis Prevention Screening & Early Detection Treatment Cancer & Public Health Cancer Health ...

  13. Understanding Cancer Prognosis

    Medline Plus

    Full Text Available ... Treatment Pediatric Supportive Care Unusual Cancers of Childhood Treatment Research Metastatic Cancer Metastatic Cancer Research Common Cancer Types Recurrent Cancer Common Cancer Types Bladder Cancer Breast Cancer Colorectal Cancer Kidney (Renal Cell) Cancer Leukemia ...

  14. Model Checking Feature Interactions

    DEFF Research Database (Denmark)

    Le Guilly, Thibaut; Olsen, Petur; Pedersen, Thomas;

    2015-01-01

    This paper presents an offline approach to analyzing feature interactions in embedded systems. The approach consists of a systematic process to gather the necessary information about system components and their models. The model is first specified in terms of predicates, before being refined to t...

  15. Features and Agreement

    CERN Document Server

    Bayer, S; Bayer, Sam; Johnson, Mark

    1995-01-01

    This paper compares the consistency-based account of agreement phenomena in `unification-based' grammars with an implication-based account based on a simple feature extension to Lambek Categorial Grammar (LCG). We show that the LCG treatment accounts for constructions that have been recognized as problematic for `unification-based' treatments.

  16. Hereditary colorectal cancer diagnostics

    DEFF Research Database (Denmark)

    Klarskov, Louise; Holck, Susanne; Bernstein, Inge;

    2012-01-01

    BackgroundThe hereditary non-polyposis colorectal cancer (HNPCC) subset of tumours can broadly be divided into tumours caused by an underlying mismatch-repair gene mutation, referred to as Lynch syndrome, and those that develop in families with similar patterns of heredity but without disease......-predisposing germline mismatch repair mutations, referred to as familial colorectal cancer type X (FCCTX). Recognition of HNPCC-associated colorectal cancers is central since surveillance programmes effectively reduce morbidity and mortality. The characteristic morphological features linked to Lynch syndrome can aid...... in the identification of this subset, whereas the possibility to use morphological features as an indicator of FCCTX is uncertain.Objective and methodsTo perform a detailed morphological evaluation of HNPCC-associated colorectal cancers and demonstrate significant differences between tumours associated with FCCTX...

  17. The correlation of HDAC1 and HDAC2 expression with clinicopathological features in sporadic breast cancers%散发性乳腺癌HDAC1和HDAC2蛋白表达与临床病理参数相关性研究

    Institute of Scientific and Technical Information of China (English)

    于兆进; 赵琳; 任婕; 白雪峰; 魏敏杰

    2011-01-01

    目的:探求HDAC1、HDAC2蛋白表达与乳腺癌临床、病理参数的相关性及其临床意义.方法:收集散发性乳腺癌标本119例,乳腺纤维腺瘤组织18例,应用SP免疫组化法检测HDAC1、HDAC2蛋白的表达情况,并与乳腺癌临床病理特点之间的关系进行分析.结果:HDAC1、HDAC2在乳腺癌和纤维腺瘤组织中表达均无显著差异.在ERβ表达阳性的组织中,HDAC1表达显著增高;HDAC2与HER2的表达呈显著的正相关性;HDAC1和HDAC2在c-Myc阳性表达的组织中阳性率显著增高;MRP阳性表达的组织中,HDAC1表达显著增高,BCRP阳性表达的组织中,HDAC2表达显著增高.结论:HDAC1、HDAC2高表达与女性散发性乳腺癌的发生发展以及产生耐药之间有一定的联系.%Objective : To study the correlation of HDAC1 and HDAC2 expression with clinicopathological features in Chinese women with sporadic breast cancers. Methods : HDAC1 , HDAC2 protein expression were detected in 119 cases of sporadic breast cancers and 18 cases of breast fibroadenoma tissues using immunohistochemistry ( SP method ). Then, the association of above results with clinical pathological features were analysed. Results: The expression levels of HDAC1 and HDAC2 were not significantly different between breast cancer and fibroadenoma tissues. HDAC2 expression level in carcinoma with lymph node metastasis were significantly higher than those without metastasis; In different tumor type of breast cancer, HDAC2 expression were significantly different, with invasive ductal carcinoma having the highest positive rate. In ERβ - positive tissues, HDAC1 and HDAC2 expression levels were significantly higher than ERβ - negative tissues; The expression of HDAC2 showed significant positive correlation with HER2 , p53 , c - Myc ; In MRP - positive breast cancer tissues. HDAC1 expression was significantly increased, and in BCRP - positive breast cancer tissues, HDAC2 expression was significantly higher. Conclusion: The

  18. Live facial feature extraction

    Institute of Scientific and Technical Information of China (English)

    ZHAO JieYu

    2008-01-01

    Precise facial feature extraction is essential to the high-level face recognition and expression analysis. This paper presents a novel method for the real-time geomet-ric facial feature extraction from live video. In this paper, the input image is viewed as a weighted graph. The segmentation of the pixels corresponding to the edges of facial components of the mouth, eyes, brows, and nose is implemented by means of random walks on the weighted graph. The graph has an 8-connected lattice structure and the weight value associated with each edge reflects the likelihood that a random walker will cross that edge. The random walks simulate an anisot-ropic diffusion process that filters out the noise while preserving the facial expres-sion pixels. The seeds for the segmentation are obtained from a color and motion detector. The segmented facial pixels are represented with linked lists in the origi-nal geometric form and grouped into different parts corresponding to facial com-ponents. For the convenience of implementing high-level vision, the geometric description of facial component pixels is further decomposed into shape and reg-istration information. Shape is defined as the geometric information that is invari-ant under the registration transformation, such as translation, rotation, and iso-tropic scale. Statistical shape analysis is carried out to capture global facial fea-tures where the Procrustes shape distance measure is adopted. A Bayesian ap-proach is used to incorporate high-level prior knowledge of face structure. Ex-perimental results show that the proposed method is capable of real-time extraction of precise geometric facial features from live video. The feature extraction is robust against the illumination changes, scale variation, head rotations, and hand inter-ference.

  19. The clinical feature and countermeasures of hospital-acquired pneumonia in non-surgical treatment elderly inpatients with lung cancer%老年肺癌非手术治疗医院内获得性肺炎的临床特点分析及对策

    Institute of Scientific and Technical Information of China (English)

    黄虎威; 周建英

    2009-01-01

    Objective To analyze the clinical feature and treatment strategy of Hospital-acquired pneumonia (HAP) in old age patients with lung cancer. Method 275 cases of HAP in non-surgically treated elderly inpatients with lung cancer during January 2006 to December 2008 were included and analyzed retrospectively. Result Among these patients, 165 cases occurred Central-type lung cancer, squamous cell carcinoma were prone to develop HAP; HAP caused by gram-negative bacteria was significantly higher than that caused by gram-positive bacteria and fungi; HAP infection rate in radiotherapy plus chemotherapy group was higher than that in chemotherapy or radiotherapy alone group; Along with the decrease of neutrophilic leukocyte, the infection rate was significantly higher, especially when the neutrophilic leukocyte < 1.0 × 10~9/L. Conclusion According to the clinical feature of HAP in non-surgically treated elderly inpatients with lung cancer, the prevention of HAP should be a fundamental measure, and treatment should be given in time once the infection occurs.%目的 探讨老年肺癌非手术治疗患者医院内获得性肺炎的临床特点及对策.方法 对2006年1月至2008年12月住院的275例非手术治疗老年肺癌的医院内获得性肺炎(Hospital-acquired pneumonia,HAP)情况进行回顾性分析.结果 本组病例发生院内获得性肺炎165例.以中央型肺癌、鳞癌易发院内获得性肺炎;由革兰阴性菌导致的HAP明显高于革兰阳性菌与真菌;放疗加化疗HAP感染率高于单纯放疗或化疗;随着白细胞下降,感染率明显增高,特别是粒细胞<1.0×10~9/L者感染率最高.结论 根据老年肺癌非手术治疗院内获得性肺炎的临床特点把HAP的预防作为根本措施,一旦出现感染应及时治疗.

  20. The method and efficacy of support vector machine classifiers based on texture features and multi-resolution histogram from {sup 18}F-FDG PET-CT images for the evaluation of mediastinal lymph nodes in patients with lung cancer

    Energy Technology Data Exchange (ETDEWEB)

    Gao, Xuan [Center of PET/CT, The Third Affiliated Hospital of Harbin Medical University, The Affiliated Tumor Hospital of Harbin Medical University, Harbin (China); Chu, Chunyu [HIT–INSA Sino French Research Centre for Biomedical Imaging, Harbin Institute of Technology, Harbin (China); Li, Yingci; Lu, Peiou; Wang, Wenzhi [Center of PET/CT, The Third Affiliated Hospital of Harbin Medical University, The Affiliated Tumor Hospital of Harbin Medical University, Harbin (China); Liu, Wanyu [HIT–INSA Sino French Research Centre for Biomedical Imaging, Harbin Institute of Technology, Harbin (China); Yu, Lijuan, E-mail: yulijuan2003@126.com [Center of PET/CT, The Third Affiliated Hospital of Harbin Medical University, The Affiliated Tumor Hospital of Harbin Medical University, Harbin (China)

    2015-02-15

    Highlights: • Three support vector machine classifiers were constructed from PET-CT images. • The areas under the ROC curve for SVM1, SVM2, and SVM3 were 0.689, 0.579, and 0.685, respectively. • The areas under curves for maximum short diameter and SUV{sub max} were 0.684 and 0.652, respectively. • The algorithm based on SVM was potential in the diagnosis of mediastinal lymph nodes. - Abstract: Objectives: In clinical practice, image analysis is dependent on simply visual perception and the diagnostic efficacy of this analysis pattern is limited for mediastinal lymph nodes in patients with lung cancer. In order to improve diagnostic efficacy, we developed a new computer-based algorithm and tested its diagnostic efficacy. Methods: 132 consecutive patients with lung cancer underwent {sup 18}F-FDG PET/CT examination before treatment. After all data were imported into the database of an on-line medical image analysis platform, the diagnostic efficacy of visual analysis was first evaluated without knowing pathological results, and the maximum short diameter and maximum standardized uptake value (SUV{sub max}) were measured. Then lymph nodes were segmented manually. Three classifiers based on support vector machine (SVM) were constructed from CT, PET, and combined PET-CT images, respectively. The diagnostic efficacy of SVM classifiers was obtained and evaluated. Results: According to ROC curves, the areas under curves for maximum short diameter and SUV{sub max} were 0.684 and 0.652, respectively. The areas under the ROC curve for SVM1, SVM2, and SVM3 were 0.689, 0.579, and 0.685, respectively. Conclusion: The algorithm based on SVM was potential in the diagnosis of mediastinal lymph nodes.

  1. The method and efficacy of support vector machine classifiers based on texture features and multi-resolution histogram from 18F-FDG PET-CT images for the evaluation of mediastinal lymph nodes in patients with lung cancer

    International Nuclear Information System (INIS)

    Highlights: • Three support vector machine classifiers were constructed from PET-CT images. • The areas under the ROC curve for SVM1, SVM2, and SVM3 were 0.689, 0.579, and 0.685, respectively. • The areas under curves for maximum short diameter and SUVmax were 0.684 and 0.652, respectively. • The algorithm based on SVM was potential in the diagnosis of mediastinal lymph nodes. - Abstract: Objectives: In clinical practice, image analysis is dependent on simply visual perception and the diagnostic efficacy of this analysis pattern is limited for mediastinal lymph nodes in patients with lung cancer. In order to improve diagnostic efficacy, we developed a new computer-based algorithm and tested its diagnostic efficacy. Methods: 132 consecutive patients with lung cancer underwent 18F-FDG PET/CT examination before treatment. After all data were imported into the database of an on-line medical image analysis platform, the diagnostic efficacy of visual analysis was first evaluated without knowing pathological results, and the maximum short diameter and maximum standardized uptake value (SUVmax) were measured. Then lymph nodes were segmented manually. Three classifiers based on support vector machine (SVM) were constructed from CT, PET, and combined PET-CT images, respectively. The diagnostic efficacy of SVM classifiers was obtained and evaluated. Results: According to ROC curves, the areas under curves for maximum short diameter and SUVmax were 0.684 and 0.652, respectively. The areas under the ROC curve for SVM1, SVM2, and SVM3 were 0.689, 0.579, and 0.685, respectively. Conclusion: The algorithm based on SVM was potential in the diagnosis of mediastinal lymph nodes

  2. Features of elderly patients over 75 years old with gastric cancer and surgical strategy%75岁以上老年胃癌患者的发病特征及外科治疗对策

    Institute of Scientific and Technical Information of China (English)

    陈凛; 崔建新

    2016-01-01

    The new cases and mortality of gastric cancer in the population aged over 75 years account for 21%and 30% of the cases in the whole population respectively. These elderly patients with gastric cancer are characteristic of nonspecific clinical manifestations, high proportion of upper gastric carcinoma, larger tumor size, advanced TNM stage, concomitant diseases, poor body function and high risk of complications. Specialists should pay more attention to the diagnosis and treatment of these patients. Comprehensive and systemic assessment should be performed, and concomitant diseases should be treated. Accurate preoperative staging should be accessed by EUS and CT. Individualized treatment according to the principle of precise surgery and enhanced recovery after surgery (ERAS) should be performed as follows. For early gastric cancer with low risk of lymph node metastasis, endoscopic submucosal dissection (ESD) is recommended for expanded indications. For resectable advanced gastric cancer , “downsizing” surgery obtaining≥ 4 cm incisal margin is recommended, which must be based on accurate preoperative stage. And gasless laproscopy is applicable for these patients. For unresectable advanced gastric cancer, conversion therapy is not the priority unless patients with high response rate. Palliative chemotherapy, immunotherapy and best supportive care should be applied in turn. ERAS techniques application in elderly patients with gastric cancer requires careful selection.%我国75岁以上老年胃癌患者占全部胃癌新发病例和死亡病例数的21%和30%,其发病率和死亡率仅次于肺癌位居第2位。高龄胃癌患者具有临床表现不特异、胃上部癌比例高、肿瘤体积大、TNM分期晚等临床病理特点,同时具有共患疾病多、身体储备功能差等特征,发生手术相关并发症风险较高。因此,对此类患者的诊治应引起胃癌专科医生的高度重视。诊治过程需要多学科综合系统评估

  3. Beware of Online Cancer Fraud

    Science.gov (United States)

    ... information can travel around the Web in an instant. "Anyone who suffers from cancer, or knows someone ... hair loss, or impotency. back to top This article appears on FDA's Consumer Updates page , which features ...

  4. Reliability of PET/CT shape and heterogeneity features in functional and morphological components of Non-Small Cell Lung Cancer tumors: a repeatability analysis in a prospective multi-center cohort

    CERN Document Server

    Desseroit, Marie-Charlotte; Weber, Wolfgang; Siegel, Barry A; Rest, Catherine Cheze Le; Visvikis, Dimitris; Hatt, Mathieu

    2016-01-01

    Purpose: The main purpose of this study was to assess the reliability of shape and heterogeneity features in both Positron Emission Tomography (PET) and low-dose Computed Tomography (CT) components of PET/CT. A secondary objective was to investigate the impact of image quantization.Material and methods: A Health Insurance Portability and Accountability Act -compliant secondary analysis of deidentified prospectively acquired PET/CT test-retest datasets of 74 patients from multi-center Merck and ACRIN trials was performed. Metabolically active volumes were automatically delineated on PET with Fuzzy Locally Adaptive Bayesian algorithm. 3DSlicerTM was used to semi-automatically delineate the anatomical volumes on low-dose CT components. Two quantization methods were considered: a quantization into a set number of bins (quantizationB) and an alternative quantization with bins of fixed width (quantizationW). Four shape descriptors, ten first-order metrics and 26 textural features were computed. Bland-Altman analysi...

  5. Features of Women's language

    Institute of Scientific and Technical Information of China (English)

    何延凌

    2008-01-01

    Language is a means of verbal communication.People use language to communicate with each other.In the society,no two speakers are exactly alike in the way of speaking.Some differences are due to age,gender,statue and personality. Above all,gender is one of the obvious reasons.The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation,intonation,diction,subjects,grammar and discourse.From the discussion of the features of women's language,more attention should be paid to language use in social context.What's more,the linguistic phenomena in a speaking community can be understood more thoroughly.

  6. Extending Scalasca's analysis features

    OpenAIRE

    Lorenz, Daniel; Böhme, David; Mohr, Bernd; Strube, Alexandre; Szebenyi, Zoltan

    2013-01-01

    Scalasca is a performance analysis tool, which parses the trace of an application run for certain patterns that indicate performance inefficiencies. In this paper, we present recently developed new features in Scalasaca. In particular, we describe two newly implemented analysis methods: the root cause analysis which tries to identify the cause of a delay and the critical path analysis, which analyses the path of execution that determines the application runtime. Furthermore, we present time-s...

  7. Functions & Features of Idioms

    Institute of Scientific and Technical Information of China (English)

    周来纳

    2015-01-01

    Idioms, or conventionalized multiword expressions, often but not always non-literal, are hardly marginal in English, though they have been relatively neglected in lexical studies of the language. This neglect is especially evident in respect of the functions of idioms. The aim of this article, accordingly, is to account for the functions of idioms by analyzing what they do with the features of idioms.

  8. CBFS: high performance feature selection algorithm based on feature clearness.

    Directory of Open Access Journals (Sweden)

    Minseok Seo

    Full Text Available BACKGROUND: The goal of feature selection is to select useful features and simultaneously exclude garbage features from a given dataset for classification purposes. This is expected to bring reduction of processing time and improvement of classification accuracy. METHODOLOGY: In this study, we devised a new feature selection algorithm (CBFS based on clearness of features. Feature clearness expresses separability among classes in a feature. Highly clear features contribute towards obtaining high classification accuracy. CScore is a measure to score clearness of each feature and is based on clustered samples to centroid of classes in a feature. We also suggest combining CBFS and other algorithms to improve classification accuracy. CONCLUSIONS/SIGNIFICANCE: From the experiment we confirm that CBFS is more excellent than up-to-date feature selection algorithms including FeaLect. CBFS can be applied to microarray gene selection, text categorization, and image classification.

  9. Biological features and biomarkers in hepatocellularcarcinoma

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    Similar to other cancers, a multistep process of carcinogenesisis observed in hepatocellular carcinoma (HCC).Although the mechanisms underlying the developmentof HCC have been investigated in terms of oncology,virology, and stem cell biology, the whole picture ofhepatocarcinogenesis remains to be elucidated. Recentprogress in molecular biology has provided clues tothe underlying cause of various diseases. In particular,sequencing technologies, such as whole genome andexome sequencing analyses, have made an impacton genomic research on a variety of cancers includingHCC. Comprehensive genomic analyses have detectednumerous abnormal genetic alterations, such asmutations and copy number alterations. Based on thesefindings, signaling pathways and cancer-related genesinvolved in hepatocarcinogenesis could be analyzed indetail. Simultaneously, a number of novel biomarkers,both from tissue and blood samples, have been recentlyreported. These biomarkers have been successfullyapplied to early diagnosis and prognostic prediction ofpatients with HCC. In this review, we focus on the recentdevelopments in molecular cancer research on HCC andexplain the biological features and novel biomarkers.

  10. Feature Importance in Nonlinear Embeddings (FINE): Applications in Digital Pathology.

    Science.gov (United States)

    Ginsburg, Shoshana B; Lee, George; Ali, Sahirzeeshan; Madabhushi, Anant

    2016-01-01

    Quantitative histomorphometry (QH) refers to the process of computationally modeling disease appearance on digital pathology images by extracting hundreds of image features and using them to predict disease presence or outcome. Since constructing a robust and interpretable classifier is challenging in a high dimensional feature space, dimensionality reduction (DR) is often implemented prior to classifier construction. However, when DR is performed it can be challenging to quantify the contribution of each of the original features to the final classification result. We have previously presented a method for scoring features based on their importance for classification on an embedding derived via principal components analysis (PCA). However, nonlinear DR involves the eigen-decomposition of a kernel matrix rather than the data itself, compounding the issue of classifier interpretability. In this paper we present feature importance in nonlinear embeddings (FINE), an extension of our PCA-based feature scoring method to kernel PCA (KPCA), as well as several NLDR algorithms that can be cast as variants of KPCA. FINE is applied to four digital pathology datasets to identify key QH features for predicting the risk of breast and prostate cancer recurrence. Measures of nuclear and glandular architecture and clusteredness were found to play an important role in predicting the likelihood of recurrence of both breast and prostate cancers. Compared to the t-test, Fisher score, and Gini index, FINE was able to identify a stable set of features that provide good classification accuracy on four publicly available datasets from the NIPS 2003 Feature Selection Challenge.

  11. Relationship between the expression of Ki-67 and molecular classification and clinical patho-logical features in breast cancer%Ki-67表达与乳腺癌分子分型及临床病理特征的关系

    Institute of Scientific and Technical Information of China (English)

    张莹; 任占平; 张芫

    2014-01-01

    目的:观察不同分子亚型乳腺癌中Ki-67的表达及其与乳腺癌临床病理特征的关系及意义。方法采用免疫组化En-Vision两步法检测245例乳腺癌组织中ER、PR、HER-2及Ki-67的表达,并比较Ki-67表达与乳腺癌临床病理参数的关系。结果不同分子分型乳腺癌中Ki-67的增殖指数差异有统计学意义( P50岁组的Ki-67增殖指数差异无统计学意义;患者按≤40岁及≥60岁分为年轻组及老年组时,年轻组Ki-67增殖指数明显高于老年组。结论 Ki-67在三阴型乳腺癌、年轻患者、伴腋窝淋巴结转移、肿块较大及ER、PR阴性组中的增殖指数较高。 Ki-67可作为判断乳腺癌预后的重要指标。%Purpose To study the expression of Ki-67 in breast cancer with different molecular classification, and to discuss the rela-tionship between the expression of Ki-67 and clinical pathological features in breast cancer. Methods All 245 patients with breast cancer were divided into different molecular classification through detecting the expression of ER, PR, HER-2 by immunohistochemical method. The expression of Ki-67 was also detected, and to study relationship between the expression and clinical pathological features. Results The difference of Ki-67 index was statistically significant in different molecular classification of breast cancer. Ki-67 index in patients with lymph node metastasis and larger tumor size were higher than that with no metastasis and smaller tumor size. Ki-67 index in patients with ER and PR positive were lower than that negative, the difference was statistically significant. Ki-67 expression differ-ence was not statistically significant between the two groups according to the median age (50 years old). But when patients were divid-ed into young and elderly groups by≤40 and≥60 years old, Ki-67 index in young group was more higher than that in elderly group. Conclusion Ki-67 index in patients with triple-negative breast cancer, young

  12. Early bile duct cancer

    Institute of Scientific and Technical Information of China (English)

    Jae Myung Cha; Myung-Hwan Kim; Se Jin Jang

    2007-01-01

    Bile duct cancers are frequently diagnosed as advanced diseases. Over half of patients with advanced bile duct cancer present with unresectable malignancies and their prognosis has been very poor even after curative resections. Although there has been a need to diagnose bile duct cancer at its early stage, it has been a difficult goal to achieve due to our lack of knowledge regarding this disease entity. Early bile duct cancer may be defined as a carcinoma whose invasion is confined within the fibromuscular layer of the extrahepatic bile duct or intrahepatic large bile duct without distant metastasis irrespective of lymph node involvement. Approximately 3%-10% of resected bile duct cancers have been reported to be early cancers in the literature. The clinicopathological features of patients with early bile duct cancer differ from those of patients with advanced bile duct cancer, with more frequent asymptomatic presentation, characteristic histopathological findings,and excellent prognosis. This manuscript is organized to emphasize the need for convening an international consensus to develop the concept of early bile duct cancer.

  13. Molecular subtypes and clinicopathological features of breastcancer

    Directory of Open Access Journals (Sweden)

    Irianiwati Irianiwati

    2013-04-01

    Full Text Available Breast cancer is a heterogeneous disease with regard to morphological spectrum, clinical presentation and response to therapy. Based on immunohistochemistry detection of estrogen receptor, progesterone receptor, Her-2 status, proliferation rate and clusters of basal gene expression, breast cancers can be classified into luminal A, luminal B, basal-like/triple negative, and Her-2 positive. It was suggested that there was a close relationship between molecular subtypes and clinicopathological features of breast cancer, as they are very important to predict prognosis and therapeutic implications. Keywords: molecular subtypes - breast cancer- clinicopathological features -heterogeneity –theraputicimplications   Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

  14. Clinical Features of Choroidal Metastases from Carcinoid Tumour

    Institute of Scientific and Technical Information of China (English)

    Huaning She; Yuping Zheng; Xiaohua Wang; Yanlong Quan; Naixue Sun

    2004-01-01

    Purpose :To report ophthalmologic and angiographic features of choroidal metastases from carcinoid tumor and analyze their common clinical manifestation.Methods:Ophthalmologic examinations and fundus fluorescein angiography (FFA) were performed in 30 patients suffered from carcinoid tumor, and four patients diagnosed of breast cancer (2 cases), lung cancer (1 case) and maxillary sinus cancer (1 case) were confirmed with choroidal metastases.Results:Choroidal metastases were found as the initial manifestations of the malignant tumors on 2 patients whose initial and chief complaints were decreasing vision, their fundus lesions were mainly presented in the posterior pole and FFA showed high density of fluorescence of the lesions.Conclusions:This study indicated choroidal metastasis might be the first sign of metastases for patients with cancer. For patients with unknown metastastic cancers, examinations of the choroids may be useful for diagnosis and prognosis. Eye Science 2004;20:15-18.

  15. 全自动免疫组化筛查ALK基因融合非小细胞肺癌及其病理特征%Screen of Non-small Cell Lung Cancer with Anaplastic Lymphoma Kinase Fusion Gene by Automatic Immunohistochemical Method and Its Pathological Features

    Institute of Scientific and Technical Information of China (English)

    冯强; 彭森; 刘霞

    2016-01-01

    目的 探讨全自动免疫组化筛查间变性淋巴瘤激酶(ALK)基因融合非小细胞肺癌的临床特点及病理特征.方法 选取经病理检查确诊的554例非小细胞肺癌组织,采用Ventana抗ALK试剂和全自动免疫组化(IHC)染色检测ALK状态,分析ALK基因融合非小细胞肺癌的临床特点和病理特征.结果 本次研究的554例非小细胞肺癌患者组织中,共筛选出34例ALK阳性,占6.14%;年龄0.05).组织形态学方面,34例ALK阳性非小细胞肺癌中28例为肺腺癌,6例为非肺腺癌.16例实体型为主腺癌合并黏液产生,7例腺泡型为主腺癌,1例为乳头型为主腺癌,4例为浸润性黏液腺癌,4例为鳞状细胞癌.EGFR基因突变检测显示:仅有1例合并该基因突变,其余均为野生型.9例IHC阳性样本,9例ALK基因融合非小细胞肺癌,9例IHC阴性样本经荧光原位杂交技术检测和RT-PCR检测均为阴性结果,6例IHC染色可能为阳性,经荧光原位杂交技术检测均显示为ALK融合阴性.结论 ALK基因融合肺癌是非小细胞肺癌一新的分子亚型,具有独特的临床表现和病理形态;Ventana抗ALK试剂和IHC染色是检测ALK阳性非小细胞肺癌首选方法,对提高该类型肺癌的检出率及个体化治疗具有重要意义.%Objective To explore the automatic immunohistochemical method for the screen of non-small cell lung cancer with anaplastic lymphoma kinase( ALK) and its clinical pathological features.Methods 554 cases of non-small cell lung cancer diagnosed by pathological examination were enrolled in this study.The status of ALK was detected by Ventana anti ALK reagent and IHC staining, and the clinical characteristics and pathological features of ALK gene were analyzed.Results Among of 554 patients with non-small cell lung cancer,34 cases showed positive ALK(6.14%).The positive rate of the patients under 60 years old(8.69%) was significantly higher than that of the elder patients ( 3 .62%) ( P0.05).The results of

  16. Quiz: Test Your Skin Cancer IQ

    Science.gov (United States)

    ... please turn Javascript on. Feature: Skin Cancer Quiz: Test Your Skin Cancer IQ Past Issues / Summer 2013 Table of Contents 1. ... to Results / Skin and Sun – Safety First / Quiz: Test Your Skin Cancer IQ Summer 2013 Issue: Volume 8 Number 2 Page ...

  17. 6 Common Cancers - Lung Cancer

    Science.gov (United States)

    ... Home Current Issue Past Issues 6 Common Cancers - Lung Cancer Past Issues / Spring 2007 Table of Contents For ... for Desperate Housewives. (Photo ©2005 Kathy Hutchins / Hutchins) Lung Cancer Lung cancer causes more deaths than the next ...

  18. 6 Common Cancers - Skin Cancer

    Science.gov (United States)

    ... Home Current Issue Past Issues 6 Common Cancers - Skin Cancer Past Issues / Spring 2007 Table of Contents For ... Photo: AP Photo/Herald-Mail, Kevin G. Gilbert Skin Cancer Skin cancer is the most common form of ...

  19. Onychomatricoma with misleading features.

    Science.gov (United States)

    Fayol, J; Baran, R; Perrin, C; Labrousse, F

    2000-01-01

    Onychomatricoma is a rare tumour of the nail matrix with peculiar clinical and histological features and electron microscopic findings. We report on 5 cases with appearances which were misleading. Three presented as longitudinal melanonychia, a previously unreported observation. One case had the appearance of a cutaneous horn. In 3 of the 5 cases the tumour was associated with an onychomycosis and this may thus have been a predisposing factor in the secondary fungal infestation. Onychomatricoma appears as a multi-faceted tumour which can be mimicked by longitudinal melanonychia and/or onychomycosis. PMID:11200837

  20. Smoking and Lung Cancer: It's Never Too Late To Quit | NIH MedlinePlus the Magazine

    Science.gov (United States)

    ... page please turn Javascript on. Feature: Lung Cancer Smoking and Lung Cancer: It's Never Too Late to ... getting another cancer. To get help with quitting smoking... Go online to smokefree.gov. (See this issue's ...

  1. Breast Cancer Basics and You: Staging and Treatment | NIH MedlinePlus the Magazine

    Science.gov (United States)

    ... of this page please turn Javascript on. Feature: Breast Cancer Breast Cancer Basics and You: Staging and Treatment Past ... Table of Contents Staging The extent (stage) of breast cancer needs to be determined to help choose ...

  2. Breast Cancer Basics and You: Introduction | NIH MedlinePlus the Magazine

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    ... of this page please turn Javascript on. Feature: Breast Cancer Breast Cancer Basics and You: Introduction Past Issues / Spring - ... women, although male breast cancer is rare. The Breasts Inside a woman's breast are 15 to 20 ...

  3. Breast Cancer Basics and You | NIH MedlinePlus the Magazine

    Science.gov (United States)

    ... page please turn JavaScript on. Feature: Screening For Breast Cancer Breast Cancer Basics and You Past Issues / Summer 2014 ... women, although male breast cancer is rare. The Breasts Inside a woman's breast are 15 to 20 ...

  4. Lung Cancer, Questions to Ask Your Health Professional | NIH MedlinePlus the Magazine

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    ... of this page please turn Javascript on. Feature: Lung Cancer Questions to Ask Your Health Professional Past Issues / ... 2013 Table of Contents Tests What type of lung cancer do I have? Has the cancer spread from ...

  5. Lung Cancer: Early Detection is the Key | NIH MedlinePlus the Magazine

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    ... of this page please turn Javascript on. Feature: Lung Cancer Early Detection is the Key Past Issues / Winter ... that can cause lung cancer." The 2011 National Cancer Institute's National Lung Screening Trial showed the importance of detecting lung ...

  6. Skin Cancer: Biology, Risk Factors & Treatment | NIH MedlinePlus the Magazine

    Science.gov (United States)

    ... of this page please turn Javascript on. Feature: Skin Cancer Skin Cancer: Biology, Risk Factors & Treatment Past Issues / Summer 2013 ... Factors When you're told that you have skin cancer, it's natural to wonder what may have caused ...

  7. Skin Cancer Can Strike Anyone | NIH MedlinePlus the Magazine

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    ... of this page please turn Javascript on. Feature: Skin Cancer Skin Cancer Can Strike Anyone Past Issues / Summer 2013 Table ... removed. That is the most common form of skin cancer and not as dangerous as melanoma. Photo: Corbis ...

  8. Feature conversion for concurrent engineering

    OpenAIRE

    Kraker, J.K. de

    1998-01-01

    Feature conversion for concurrent engineering integrates two modern product development paradigms. Concurrent engineering is a product development paradigm in which multiple engineering disciplines participate. It optimizes a product with respect to available resources and product quality, for which it requires to communicate between the different engineering disciplines. Feature conversion is a feature modeling technique. The feature modeling paradigm combines geometric and functional produc...

  9. Clinicopathological features and prognostic factors of breast cancer patients with inguinal lymph node metastases:a report of 17 cases%17例乳腺癌腹股沟淋巴结转移患者的临床特征和预后分析

    Institute of Scientific and Technical Information of China (English)

    李倩; 李俏; 徐兵河; 张频; 李青; 袁芃; 王佳玉; 罗扬; 马飞; 樊英

    2013-01-01

    Objective To analyze the clinicopathological features and prognostic factors of breast cancer patients with inguinal lymph node metastases.Methods Seventeen breast cancer patients with inguinal lymph node metastases were treated from January 1999 to December 2010 in our cancer center.All of the patients had a history of breast cancer without other primary cancer.Their clinicopathological characteristics and prognostic factors were surveyed.Results The frequency of breast cancer cases with inguinal lymph node metastaseis consisted of 0.11% of the total number of breast cancer patients in the same period.Two patients (11.8%) had inguinal lymph node metastasis only,and multi-site metastases were observed in the remaining 15 (88.2%) patients.The number of ER-and/or PR-positive and negative were 10 (58.8%) and 7 (41.2%) cases,respectively,and among the 13 cases who underwent HER-2 test,the number of HER-2-positive was 4 (30.8%).For the 16 patients who underwent surgery,9 patients were detected with metastatic axillary lymph nodes equal or greater than 4.All of the 17 patients were treated with chemotherapy.The median follow-up time was 156 months.The 5-year overall survival rate was 49.9%.Univariate analysis revealed that metastatic axillary lymph nodes≥ 4,ER-and (or) PR-negative,adjuvant chemotherapy ≤6 cycles,disease stage as Ⅲ/Ⅳ at diagnosis and the period from diagnosis of breast cancer to the occurrence of inguinal lymph node metastasis ≤36 months were predictors of shorter PFS (P < 0.05).Metastatic axillary lymph nodes≥ 4,ER-and (or) PR-negative,adjuvant chemotherapy ≤6 cycles,primary recurrence as multiple distant metastases,the period from diagnosis of breast cancer to the occurrence of inguinal lymph nodes metastasis ≤36 months and pleural effusion were predictors of shorter OS (P < 0.05).Multivariate analysis revealed that the period from diagnosis of breast cancer to the occurrence of inguinal lymph node metastasis was an

  10. Correlation of ultrasound features with the expression of vascular endothelial growth factor, cyclooxygenase-2, metalloprotease-9 in breast cancer%血管内皮生长因子、环氧化酶-2和基质金属蛋白酶-9在乳腺癌中的表达与超声征象的相关性研究

    Institute of Scientific and Technical Information of China (English)

    冉张申; 王克强; 李湘奇

    2015-01-01

    Objective By comparing with the relationship between important signs on ultrasound in breast cancer and the protein expression of vascular endothelial growth factor (VEGF),cyclooxygenase-2 (COX-2),metalloprotease-9 (MMP-9) biology,the relationship between molecular pathology and ultrasound features were studied,which provided a certain theoretical basis for the early diagnosis,treatment and prognosis of breast cancer patients.Methods 89 cases of breast lesions were confirmed by ultrasonic examination,operation and pathology.By using double-blind method,ultrasound features were grouped into burr,calcification,abnormal vascular,lymph node by physicians with rich breast diagnosis experience based on BI-RADS classification method.In each case,the expression of VEGF,COX-2,MMP-9 were detected by immunohistochemical SP method,then the relationship between the expression of VEGF,COX-2,MMP-9 and breast ultrasound features were analyzed.Results positive rate of protein expression of VEGF,COX-2,MMP-9 in burr syndrome group were higher than that of no-burr syndrome group (P < 0.05),no obvious difference(P > 0.05) between the calcification group and no calcification group,higher in abnormal breast cancer group than that of no-abnormal blood vessels (P < 0.05),higher in lymph node metastasis group than that of no-lymph node metastasis (P < 0.05).Conclusions The high expression of VEGF,COX-2,MMP-9 could have an influence on burr syndrome,abnormal blood vessels,lymph node metastasis in breast cancer ultrasound features,which could be used as a biological basis of malignant signs in ultrasound of breast cancer.And at the same time,it's prompted that the breast cancer patients with ultrasound features is high in malignant degree and with poor prognosis.%目的 通过比较乳腺癌组织中血管内皮生长因子(VEGF)、环氧化酶-2(COX-2)、基质金属蛋白酶-9(MMP-9)三种蛋白的表达与乳腺癌超声重要征象的关系,初步探讨乳腺癌超声征象与分

  11. Feature Engineering for Drug Name Recognition in Biomedical Texts: Feature Conjunction and Feature Selection

    Directory of Open Access Journals (Sweden)

    Shengyu Liu

    2015-01-01

    Full Text Available Drug name recognition (DNR is a critical step for drug information extraction. Machine learning-based methods have been widely used for DNR with various types of features such as part-of-speech, word shape, and dictionary feature. Features used in current machine learning-based methods are usually singleton features which may be due to explosive features and a large number of noisy features when singleton features are combined into conjunction features. However, singleton features that can only capture one linguistic characteristic of a word are not sufficient to describe the information for DNR when multiple characteristics should be considered. In this study, we explore feature conjunction and feature selection for DNR, which have never been reported. We intuitively select 8 types of singleton features and combine them into conjunction features in two ways. Then, Chi-square, mutual information, and information gain are used to mine effective features. Experimental results show that feature conjunction and feature selection can improve the performance of the DNR system with a moderate number of features and our DNR system significantly outperforms the best system in the DDIExtraction 2013 challenge.

  12. Mutual information-based feature selection for radiomics

    Science.gov (United States)

    Oubel, Estanislao; Beaumont, Hubert; Iannessi, Antoine

    2016-03-01

    Background The extraction and analysis of image features (radiomics) is a promising field in the precision medicine era, with applications to prognosis, prediction, and response to treatment quantification. In this work, we present a mutual information - based method for quantifying reproducibility of features, a necessary step for qualification before their inclusion in big data systems. Materials and Methods Ten patients with Non-Small Cell Lung Cancer (NSCLC) lesions were followed over time (7 time points in average) with Computed Tomography (CT). Five observers segmented lesions by using a semi-automatic method and 27 features describing shape and intensity distribution were extracted. Inter-observer reproducibility was assessed by computing the multi-information (MI) of feature changes over time, and the variability of global extrema. Results The highest MI values were obtained for volume-based features (VBF). The lesion mass (M), surface to volume ratio (SVR) and volume (V) presented statistically significant higher values of MI than the rest of features. Within the same VBF group, SVR showed also the lowest variability of extrema. The correlation coefficient (CC) of feature values was unable to make a difference between features. Conclusions MI allowed to discriminate three features (M, SVR, and V) from the rest in a statistically significant manner. This result is consistent with the order obtained when sorting features by increasing values of extrema variability. MI is a promising alternative for selecting features to be considered as surrogate biomarkers in a precision medicine context.

  13. Animal Models of Colorectal Cancer

    Science.gov (United States)

    Johnson, Robert L.; Fleet, James C.

    2012-01-01

    Colorectal cancer is a heterogeneous disease that afflicts a large number of people in the United States. The use of animal models has the potential to increase our understanding of carcinogenesis, tumor biology, and the impact of specific molecular events on colon biology. In addition, animal models with features of specific human colorectal cancers can be used to test strategies for cancer prevention and treatment. In this review we provide an overview of the mechanisms driving human cancer, we discuss the approaches one can take to model colon cancer in animals, and we describe a number of specific animal models that have been developed for the study of colon cancer. We believe that there are many valuable animal models to study various aspects of human colorectal cancer. However, opportunities for improving upon these models exist. PMID:23076650

  14. 胃癌卵巢转移瘤68例临床病理及预后分析%Clinicopathological features and prognosis of 68 patients with metastatic ovarian tumors from the gastric cancer

    Institute of Scientific and Technical Information of China (English)

    赵敬柱; 王刚; 张汝鹏; 梁寒

    2010-01-01

    目的 探讨胃癌卵巢转移瘤的临床病理特征、治疗方法及影响预后的因素.方法 回顾性分析68例胃癌卵巢转移患者的临床特征、治疗和生存情况及预后因素.结果 本组胃癌卵巢转移瘤患者的中位年龄46岁,67.6%为绝经前期者,双侧卵巢转移者占64.7%,52.9%的肿瘤组织学类型为印戒细胞癌.均采用手术联合化疗为主的综合治疗.全组中位总体生存期14.1个月,中位无进展生存期6.7个月.1、3、5年的生存率分别为54.8%、14.9%和0.单因素分析显示,胃癌根治程度(P=0.000)、淋巴结转移数(P=0.043)、卵巢转移瘤组织学类型(P=0.003)、转移灶范围(P=0.000)、肿瘤细胞减灭术(P=0.008)和卵巢转移瘤的化疗(P=0.000)与患者预后相关.多因素分析显示,肿瘤细胞减灭术(P=0.025)、转移灶范围(P=0.008)是影响胃癌卵巢转移瘤患者预后的独立因素.转移灶局限于卵巢者与超出卵巢者相比,总体生存期(P2 cm)(P<0.01). Optimal cytoreduction was also associated with a significantly longer median progression-free survival(11.0 months) as compared to suboptimal cytoreduction median progression-free survival (3.1 months)(P<0.01). Conclusions Prognosis of patients with metastatic ovarian carcinoma from gastric cancer is quite poor. Extent of metastatic lesion is an independent factor. Optimal cytoreduction is associated with improved survival.

  15. Investigation of correlation between colonic cancer related anemia and characteristics of clinical pathology

    Institute of Scientific and Technical Information of China (English)

    2014-01-01

    Objective To investigate the correlation between colonic cancer-related anemia and the pathologic features of colonic cancer.Methods The relationship between colonic cancer-related anemia and the pathologic features of colonic cancer was analyzed in a statistical method.Results There was no statistical significance between the histopathological type and incidence of colonic cancer-related anemia(P>0.05).There was statistical significance between the general classification of colonic cancer

  16. Abdominal tuberculosis: Imaging features

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Jose M. [Department of Radiology, Hospital de S. Joao, Porto (Portugal)]. E-mail: jmpjesus@yahoo.com; Madureira, Antonio J. [Department of Radiology, Hospital de S. Joao, Porto (Portugal); Vieira, Alberto [Department of Radiology, Hospital de S. Joao, Porto (Portugal); Ramos, Isabel [Department of Radiology, Hospital de S. Joao, Porto (Portugal)

    2005-08-01

    Radiological findings of abdominal tuberculosis can mimic those of many different diseases. A high level of suspicion is required, especially in high-risk population. In this article, we will describe barium studies, ultrasound (US) and computed tomography (CT) findings of abdominal tuberculosis (TB), with emphasis in the latest. We will illustrate CT findings that can help in the diagnosis of abdominal tuberculosis and describe imaging features that differentiate it from other inflammatory and neoplastic diseases, particularly lymphoma and Crohn's disease. As tuberculosis can affect any organ in the abdomen, emphasis is placed to ileocecal involvement, lymphadenopathy, peritonitis and solid organ disease (liver, spleen and pancreas). A positive culture or hystologic analysis of biopsy is still required in many patients for definitive diagnosis. Learning objectives:1.To review the relevant pathophysiology of abdominal tuberculosis. 2.Illustrate CT findings that can help in the diagnosis.

  17. European Nuclear Features

    Energy Technology Data Exchange (ETDEWEB)

    Barre, B.; Gonzalez, E.; Diaz Diaz, J.L.; Jimenez, J.L.; Velarde, G.; Navarro, J.M.; Hittner, D.; Dominguez, M.T.; Bollini, G.; Martin, A.; Suarez, J.; Traini, E.; Lang-Lenton, J.

    2004-09-01

    ''European Nuclear Features - ENF'' is a joint publication of the three specialized technical journals, Nuclear Espana (Spain), Revue General Nucleaire (France), and atw - International Journal of Nuclear Power (Germany). The ENF support the international Europeen exchange of information and news about energy and nuclear power. News items, comments, and scientific and technical contributions will cover important aspects of the field. The second issue of ENF contains contributions about theses topics, among others: Institutional and Political Changes in the EU. - CIEMAT Department of Nuclear Fission: A General Overview. - Inertial Fusion Energy at DENIM. - High Temperature Reactors. European Research Programme. - On Site Assistance to Khmelnitsky NPP 1 and 2 (Ukraine). - Dismantling and Decommissioning of Vandellos I. (orig.)

  18. The significance of peripheral zone imaging features on pelvic T2 weighted imaging for the diagnosis of prostate cancer with PSA < 20 μg/L%盆腔磁共振T2加权像前列腺外周带影像特征对PSA<20 μg/L前列腺癌诊断的意义

    Institute of Scientific and Technical Information of China (English)

    王萱; 刘明; 陈敏; 李春媚; 万奔; 魏东; 王建业

    2013-01-01

    目的 探讨磁共振检查在前列腺癌早期诊断中的意义,分析T2加权成像(T2 weighted imaging,T2WI)中有助于早期前列腺癌诊断的影像学特征.方法 收集2006年2月至2011年1月收治的359例PSA< 20 μg/L、行前列腺穿刺患者的临床资料.年龄(70.1±7.6)岁.血清PSA(8.1±4.5)μg/L,其中PSA>4μg/L者343例.回顾性分析盆腔磁共振检查T2 WI影像特征,评估外周带及精囊信号、前列腺包膜与周围组织的关系,以前列腺穿刺活检病理结果作为对照,分析阅片结果.结果 本组359例中穿刺活检病理诊断为前列腺癌137例,T2WI外周带有低信号者332例.单因素Logistic回归分析发现,年龄、PSA与前列腺癌的发生密切相关(P <0.05);T2WI上外周带出现低信号有助于在影像上诊断前列腺癌;病灶数目、形态、边界、前列腺包膜的轮廓、外周带与增生腺体界限均与前列腺癌的诊断显著相关(P均<0.05);多因素Logistic回归分析发现影响前列腺癌诊断的危险因素为年龄、PSA、前列腺体积、病灶形态及前列腺包膜的轮廓,受试者工作特征曲线下面积为0.833(P <0.05).结论 盆腔磁共振检查T2WI中,病灶形态及前列腺包膜的轮廓是影响前列腺癌诊断的危险因素,年龄、PSA、前列腺体积等也与前列腺癌的发生有显著相关性.%Objective To explore the significance of 1.5-Tesla MRI in the early diagnosis of prostate cancer,and analyze the imaging features in T2WI which are helpful for the diagnosis on early prostate cancer.Methods The clinical data of patients with PSA < 20 μg/L who received prostate biopsy between Feb.2006 and Jan.2011 were reviewed including pelvic MRI and biopsy results.We retrospectively analyzed T2WI image features and evaluated the signal of peripheral zone,seminal vesicles,prostate capsule and the relationship with their surrounding tissues.The results of the reading were analyzed with reference to histopathologic

  19. Processed pseudogenes acquired somatically during cancer development

    OpenAIRE

    Cooke, Susanna L.; Shlien, Adam; Marshall, John; Pipinikas, Christodoulos P; Martincorena, Inigo; Tubio, Jose M. C.; Li, Yilong; Menzies, Andrew; Mudie, Laura; Ramakrishna, Manasa; Yates, Lucy; Davies, Helen; Bolli, Niccolo; Bignell, Graham R; Tarpey, Patrick S.

    2014-01-01

    Cancer evolves by mutation, with somatic reactivation of retrotransposons being one such mutational process. Germline retrotransposition can cause processed pseudogenes, but whether this occurs somatically has not been evaluated. Here we screen sequencing data from 660 cancer samples for somatically acquired pseudogenes. We find 42 events in 17 samples, especially non-small cell lung cancer (5/27) and colorectal cancer (2/11). Genomic features mirror those of germline LINE element retrotransp...

  20. Cancer Genetics Overview (PDQ®)—Health Professional Version

    Science.gov (United States)

    Expert-reviewed information summary in which the features of hereditary cancer and the structure and content of other PDQ cancer genetics summaries are described. The summary also contains an extensive list of genetics resources available online.

  1. Detection of Brain Tumor and Extraction of Texture Features using Magnetic Resonance Images

    Directory of Open Access Journals (Sweden)

    Prof. Dilip Kumar Gandhi

    2012-10-01

    Full Text Available Brain Cancer Detection system is designed. Aim of this paper is to locate the tumor and determine the texture features from a Brain Cancer affected MRI. A computer based diagnosis is performed in order to detect the tumors from given Magnetic Resonance Image. Basic image processing techniques are used to locate the tumor region. Basic techniques consist of image enhancement, image bianarization, and image morphological operations. Texture features are computed using the Gray Level Co-occurrence Matrix. Texture features consists of five distinct features. Selective features or the combination of selective features will be used in the future to determine the class of the query image. Astrocytoma type of Brain Cancer affected images are used only for simplicity

  2. Liposomal cancer therapy: exploiting tumor characteristics

    DEFF Research Database (Denmark)

    Kaasgaard, Thomas; Andresen, Thomas Lars

    2010-01-01

    Importance of the field: More than 10 million people worldwide are diagnosed with cancer each year, and the development of effective cancer treatments is consequently of great significance. Cancer therapy is unfortunately hampered by severe dose-limiting side effects that reduce the efficacy...... an overview of current strategies for improving the different stages of liposomal cancer therapy, which involve transporting drug-loaded liposomes through the bloodstream, increasing tumor accumulation, and improving drug release and cancer cell uptake after accumulation at the tumor target site. What...... of new liposomal drug delivery systems that better exploit tumor characteristic features is likely to result in more efficacious cancer treatments....

  3. Extremely high-dimensional feature selection via feature generating samplings.

    Science.gov (United States)

    Li, Shutao; Wei, Dan

    2014-06-01

    To select informative features on extremely high-dimensional problems, in this paper, a sampling scheme is proposed to enhance the efficiency of recently developed feature generating machines (FGMs). Note that in FGMs O(mlogr) time complexity should be taken to order the features by their scores; the entire computational cost of feature ordering will become unbearable when m is very large, for example, m > 10(11) , where m is the feature dimensionality and r is the size of the selected feature subset. To solve this problem, in this paper, we propose a feature generating sampling method, which can reduce this computational complexity to O(Gslog(G)+G(G+log(G))) while preserving the most informative features in a feature buffer, where Gs is the maximum number of nonzero features for each instance and G is the buffer size. Moreover, we show that our proposed sampling scheme can be deemed as the birth-death process based on random processes theory, which guarantees to include most of the informative features for feature selections. Empirical studies on real-world datasets show the effectiveness of the proposed sampling method. PMID:23864272

  4. Understanding Cancer Prognosis

    Medline Plus

    Full Text Available ... Services Advance Directives Using Trusted Resources Cancer Types Adolescents and Young Adults with Cancer Reports, Research, and ... of Cancers Cancers by Body Location Childhood Cancers Adolescent & Young Adult Cancers Metastatic Cancer Recurrent Cancer Research ...

  5. Understanding Cancer Prognosis

    Medline Plus

    Full Text Available ... Contact Dictionary Search About Cancer Causes and Prevention Risk Factors Genetics Cancer Prevention Overview Cancer Prevention Overview–for ... Cancer What Is Cancer Cancer Statistics Causes & Prevention Risk Factors Genetics Cancer Prevention Overview Screening Cancer Screening Overview ...

  6. Understanding Cancer Prognosis

    Medline Plus

    Full Text Available ... Contact Dictionary Search About Cancer Causes and Prevention Risk Factors Genetics Cancer Prevention Overview Cancer Prevention Overview– ... Is Cancer Cancer Statistics Cancer Disparities Causes & Prevention Risk Factors Genetics Cancer Prevention Overview Screening Cancer Screening ...

  7. Lung Cancer

    Science.gov (United States)

    Lung cancer is one of the most common cancers in the world. It is a leading cause of ... in the United States. Cigarette smoking causes most lung cancers. The more cigarettes you smoke per day and ...

  8. Bone Cancer

    Science.gov (United States)

    ... cancer. Surgery is often the main treatment for bone cancer. Other treatments may include amputation, chemotherapy, and radiation therapy. Because bone cancer can come back after treatment, regular follow-up visits are important. NIH: National ...

  9. Testicular cancer

    Science.gov (United States)

    Testicular cancer is cancer that starts in the testicles, the male reproductive glands located in the scrotum. ... developing testicular cancer increases if he has: Abnormal testicle development Exposure to certain chemicals Family history of ...

  10. Thyroid Cancer

    Science.gov (United States)

    ... body work normally. There are several types of cancer of the thyroid gland. You are at greater ... imaging tests, and a biopsy to diagnose thyroid cancer. Treatment depends on the type of cancer you ...

  11. Cancer Moonshot

    Science.gov (United States)

    The Cancer Moonshot, led by Vice President Joe Biden, will marshal resources across the federal government to speed progress in cancer research and lead to improved cancer prevention, detection, and treatment.

  12. Uterine Cancer

    Science.gov (United States)

    ... is pregnant. There are different types of uterine cancer. The most common type starts in the endometrium, the lining of the uterus. This type of cancer is sometimes called endometrial cancer. The symptoms of ...

  13. Stomach Cancer

    Science.gov (United States)

    ... with stomach acid and helps digest protein. Stomach cancer mostly affects older people - two-thirds of people ... Smoke cigarettes Have a family history of stomach cancer It is hard to diagnose stomach cancer in ...

  14. Skin Cancer

    Science.gov (United States)

    Skin cancer is the most common form of cancer in the United States. The two most common types ... face, neck, hands, and arms. Another type of skin cancer, melanoma, is more dangerous but less common. Anyone ...

  15. Finding phonological features in perception

    NARCIS (Netherlands)

    K. Chládková

    2014-01-01

    This thesis investigated whether phonological features have perceptual bases. The search for features in perception was approached from several angles: from that of an adult listener who has a fully acquired language system in place, from that of a linguist who aims to uncover feature structures in

  16. Relationships between Preoperative Levels of P-selectin in Serum and Peritoneal fluid and Clinicopathologic Features in Patients with Ovarian Cancer%卵巢癌患者术前血清、腹腔液中 P-selectin 水平与临床病理特征的关系

    Institute of Scientific and Technical Information of China (English)

    陈丽霞

    2015-01-01

    ABSTRACT:Objective To measure the preoperative levels of P-selectin in serum and peritoneal fluid in patients with ovarian cancer,and to explore its clinical significance.Methods The preop-erative levels of P-selectin in serum and peritoneal fluid were measured by EL1SA in 60 cases of ovarian cancer(study group),30 cases of benign ovarian tumors(control group 1)and 30 healthy subjects(control group 2).The relationships between levels of P-selectin and clinicopathologic features of ovarian cancer were analyzed.Results The median levels of P-selectin in serum[(29.9± 7.2)μg· L-1 ]and peritoneal fluid in study group were,respectively,were significantly higher than those in control group 1 and control group 2(P <0.05),P-selectin in peritoneal fluid[(32.5± 7.1)μg·L-1 ]significantly higher than in control group 1(P <0.05).There were no significant differences in serum and peritoneal fluid P-selectin levels among serous carcinoma,mucinous car-cinoma and endometrioid carcinoma.However,serum and peritoneal fluid P-selectin levels in ovar-ian cancer patients with lymph node metastasis were significantly higher than those in ovarian cancer patients without lymph node metastasis(P <0.05),and those in patients with stage Ⅲ-Ⅳovarian cancer were significantly higher than those in patients with stage Ⅰ-Ⅱ ovarian cancer (P <0.05).Conclusion Serum and peritoneal fluid P-selectin levels significantly increase in pa-tients with ovarian cancer,suggesting that P-selectin may be involved in tumor invasion and me-tastasis.Therefore,P-selectin can be used as a potential marker for the diagnosis and treatment of ovarian cancer.%目的:测定卵巢癌患者术前血清和腹腔液中 P-选择素(P-selectin)水平,并探讨其临床意义。方法采用酶联免疫吸附试验(EL1SA)检测术前60例卵巢癌患者(研究组)及30例卵巢良性肿瘤(对照组1)和30例健康体检者(对照组2)的血清和腹腔液中 P-selectin 水平,对3组的所

  17. Novel Feature Selection by Differential Evolution Algorithm

    Directory of Open Access Journals (Sweden)

    Ali Ghareaghaji

    2013-11-01

    Full Text Available Iris scan biometrics employs the unique characteristic and features of the human iris in order to verify the identity of in individual. In today's world, where terrorist attacks are on the rise employment of infallible security systems is a must. This makes Iris recognition systems unavoidable in emerging security. Authentication the objective function is minimized using Differential Evolutionary (DE Algorithm where the population vector is encoded using Binary Encoded Decimal to avoid the float number optimization problem. An automatic clustering of the possible values of the Lagrangian multiplier provides a detailed insight of the selected features during the proposed DE based optimization process. The classification accuracy of Support Vector Machine (SVM is used to measure the performance of the selected features. The proposed algorithm outperforms the existing DE based approaches when tested on IRIS, Wine, Wisconsin Breast Cancer, Sonar and Ionosphere datasets. The same algorithm when applied on gait based people identification, using skeleton data points obtained from Microsoft Kinect sensor, exceeds the previously reported accuracies.

  18. Integrated Molecular Profiling in Advanced Cancers Trial

    Science.gov (United States)

    2016-06-21

    Breast Cancer; Non-small Cell Lung Cancer; Colorectal Cancer; Genitourinary Cancer; Pancreatobiliary Gastrointestinal Cancer; Upper Aerodigestive Tract Cancer; Gynecological Cancers; Melanoma Cancers; Rare Cancers; Unknown Primary Cancers

  19. Clinical and histopathological features and relationship of Barrett esophagus and its related adenocarcinoma

    Institute of Scientific and Technical Information of China (English)

    陈慧

    2014-01-01

    Objective To explore the clinical and histopathological features of Barrett esophagus and its related adenocarcinoma as well as the relationship between them.Methods From ajanuary 2002 to January 2012,the clinical data of 35 patients with Barrett esophagus,850 patients with esophagus cancer and 218 patients with esophageal-gastric junction cancer were collected,and the histopathological features of all the patients and the followup in patients with Barrett esophagus were retrospectively

  20. Bilateral breast cancer : mammographic and clinical findings

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Eun Kyung; Oh, Ki Keun; Jun, Hwang Yoon; Lee, Byung Chan; Lee, Kyong Sik; Lee, Yong Hee [Yonsei Univ. College of Medicine, Seoul (Korea, Republic of)

    1997-06-01

    To evaluate the mammographic and clinical features of bilateral breast cancer. We retrospectively reviewed clinical records(n=23) and mammograms (n=15) of 23 patients with bilateral breast cancer. Patients' age, location of the tumor and pathologic staging were determined from clinical records. Mammographic features were classified as spiculated mass, nonspiculated mass, mass with microcalcification, microcalcification only, asymmetric density, and normal. Of the 23 cases of bilateral breast cancer, 8(34.8%) were synchronous and 15(65.2%) were metachronous. Age at diagnosis of cancer in the first breast was between 27 and 59(mean 43) years ; there was no statistically significant difference in mean age between patients with synchronous and metachronous cancer. The mean interval between the diagnosis of each lesion of the metachronous pairs was 9.1 years. In 11 of 23 cases(48%), tumors were locaated in the same quadrant, and in the other 12 cases(52%), they were in different quadrant. At mammography, five of 15 metachronous cancers(33%) were similar in appearance and 10 pairs(67%) were different. In 4 of 23 cases(17%), cancer in the first breast was at stage 0 and stage 1, and in 13 of 23(57%), cancer in the second breast was at this same stage. In bilateral breast cancer, the two breasts frequently show different mammographic features. Cancer of the second breast was at an early stage; this suggest that regular examination and mammography are important and can allow early detection of contralateral breast cancer.

  1. Cancer Research Repository for Individuals With Cancer Diagnosis and High Risk Individuals.

    Science.gov (United States)

    2014-12-12

    Pancreatic Cancer; Thyroid Cancer; Lung Cancer; Esophageal Cancer; Thymus Cancer; Colon Cancer; Rectal Cancer; GIST; Anal Cancer; Bile Duct Cancer; Duodenal Cancer; Gallbladder Cancer; Gastric Cancer; Liver Cancer; Small Intestine Cancer; Peritoneal Surface Malignancies; Familial Adenomatous Polyposis; Lynch Syndrome; Bladder Cancer; Kidney Cancer; Penile Cancer; Prostate Cancer; Testicular Cancer; Ureter Cancer; Urethral Cancer; Hypopharyngeal Cancer; Laryngeal Cancer; Lip Cancer; Oral Cavity Cancer; Nasopharyngeal Cancer; Oropharyngeal Cancer; Paranasal Sinus Cancer; Nasal Cavity Cancer; Salivary Gland Cancer; Skin Cancer; CNS Tumor; CNS Cancer; Mesothelioma

  2. Performance comparison of quantitative semantic features and lung-RADS in the National Lung Screening Trial

    Science.gov (United States)

    Li, Qian; Balagurunathan, Yoganand; Liu, Ying; Schabath, Matthew; Gillies, Robert J.

    2016-03-01

    Background: Lung-RADS is the new oncology classification guideline proposed by American College of Radiology (ACR), which provides recommendation for further follow up in lung cancer screening. However, only two features (solidity and size) are included in this system. We hypothesize that additional sematic features can be used to better characterize lung nodules and diagnose cancer. Objective: We propose to develop and characterize a systematic methodology based on semantic image traits to more accurately predict occurrence of cancerous nodules. Methods: 24 radiological image traits were systematically scored on a point scale (up to 5) by a trained radiologist, and lung-RADS was independently scored. A linear discriminant model was used on the semantic features to access their performance in predicting cancer status. The semantic predictors were then compared to lung-RADS classification in 199 patients (60 cancers, 139 normal controls) obtained from the National Lung Screening Trial. Result: There were different combinations of semantic features that were strong predictors of cancer status. Of these, contour, border definition, size, solidity, focal emphysema, focal fibrosis and location emerged as top candidates. The performance of two semantic features (short axial diameter and contour) had an AUC of 0.945, and was comparable to that of lung-RADS (AUC: 0.871). Conclusion: We propose that a semantics-based discrimination approach may act as a complement to the lung-RADS to predict cancer status.

  3. Exploring TCGA Pan-Cancer Data at the UCSC Cancer Genomics Browser

    OpenAIRE

    Cline, Melissa S.; Brian Craft; Teresa Swatloski; Mary Goldman; Singer Ma; David Haussler; Jingchun Zhu

    2013-01-01

    The UCSC Cancer Genomics Browser (https://genome-cancer.ucsc.edu) offers interactive visualization and exploration of TCGA genomic, phenotypic, and clinical data, as produced by the Cancer Genome Atlas Research Network. Researchers can explore the impact of genomic alterations on phenotypes by visualizing gene and protein expression, copy number, DNA methylation, somatic mutation and pathway inference data alongside clinical features, Pan-Cancer subtype classifications and genomic biomarkers....

  4. Breast carcinoma with choriocarcinomatous features: a case report and review of the literature

    OpenAIRE

    Zhu, Yanyun; Liu, Mei; Li, Jinyu; Jing, Fangfang; Linghu, Ruixia; Guo, Xiaoqin; JIAO, SHUNCHANG; Yang, Junlan

    2014-01-01

    Background Breast carcinoma with choriocarcinomatous features (BCCF) is a rare variant of breast cancer, characterized by high expression of human chorionic gonadotropin (HCG) in cancer cells such as multinucleated syncytiotrophoblast-like giant cells. The first case of BCCF was reported in 1981 by Saigo and Rosen. Only one case of BCCF was reported to show no component of breast ductal carcinoma, and only partially cancer cells, such as multinucleated syncytiotrophoblast-like giant cells, ex...

  5. Mammogram Analysis Based on Pixel Intensity Mean Features

    Directory of Open Access Journals (Sweden)

    B. Santhi

    2012-01-01

    Full Text Available Problem statement: In the recent years, Computer Aided Diagnosis (CAD can be very useful for detection of breast cancer. Mammography can be used as an efficient tool for breast cancer diagnosis. A computer based diagnosis and classification system can reduce unnecessary biopsy. Approach: This study investigates a new approach to the classification of mammogram images based on pixel intensity mean features. The proposed method for the classification of normal and abnormal (cancerous pattern is a two step process. The first step is feature extraction. The intensity based features are extracted from the digital mammograms. The second step is the classification process, differentiating between normal and abnormal pattern. Artificial neural networks are used to classify the data. Experimental evaluation is performed on the Digital Database for Screening Mammography (DDSM, benchmark database. Results and Conclusion: Experiments are performed to verify that the proposed pixel intensity means the features improve the accuracy of the classification. The proposed CAD system achieves better classification performance with the accuracy of 98%.

  6. Imaging features of complex sclerosing lesions of the breast

    Energy Technology Data Exchange (ETDEWEB)

    Myong, Joo Hwa; Choi, Byung Gil; Kim, Sung Hun; Kang, Bong Joo; Lee, Ah Won; Song, Byung Joo [Seoul St. Mary' s Hospital, The Catholic University of Korea College of Medicine, Seoul (Korea, Republic of)

    2014-03-15

    The purpose of this study was to evaluate the imaging features of complex sclerosing lesions of the breast and to assess the rate of upgrade to breast cancer. From March 2008 to May 2012, seven lesions were confirmed as complex sclerosing lesions by ultrasonography-guided core needle biopsy. Final results by either surgical excision or follow-up imaging studies were reviewed to assess the rate of upgrade to breast cancer. Two radiologists retrospectively analyzed the imaging findings according to the Breast Imaging Reporting and Data System classification. Five lesions underwent subsequent surgical excision and two of them revealed ductal carcinoma in situ (n=1) and invasive ductal carcinoma (n=1). Our study showed a breast cancer upgrade rate of 28.6% (2 of 7 lesions). Two lesions were stable on imaging follow-up beyond 1 year. The mammographic features included masses (n=4, 57.1%), architectural distortion (n=2, 28.6%), and focal asymmetry (n=1, 14.3%). Common B-mode ultrasonographic features were irregular shape (n=6, 85.7%), spiculated margin (n=5, 71.4 %), and hypoechogenicity (n=7, 100%). The final assessment categories were category 4 (n=6, 85.7%) and category 5 (n=1, 14.3%). The complex sclerosing lesions were commonly mass-like on mammography and showed the suspicious ultrasonographic features of category 4. Due to a high underestimation rate, all complex sclerosing lesions by core needle biopsy should be excised.

  7. Webcam classification using simple features

    Science.gov (United States)

    Pramoun, Thitiporn; Choe, Jeehyun; Li, He; Chen, Qingshuang; Amornraksa, Thumrongrat; Lu, Yung-Hsiang; Delp, Edward J.

    2015-03-01

    Thousands of sensors are connected to the Internet and many of these sensors are cameras. The "Internet of Things" will contain many "things" that are image sensors. This vast network of distributed cameras (i.e. web cams) will continue to exponentially grow. In this paper we examine simple methods to classify an image from a web cam as "indoor/outdoor" and having "people/no people" based on simple features. We use four types of image features to classify an image as indoor/outdoor: color, edge, line, and text. To classify an image as having people/no people we use HOG and texture features. The features are weighted based on their significance and combined. A support vector machine is used for classification. Our system with feature weighting and feature combination yields 95.5% accuracy.

  8. Complex Topographic Feature Ontology Patterns

    Science.gov (United States)

    Varanka, Dalia E.; Jerris, Thomas J.

    2015-01-01

    Semantic ontologies are examined as effective data models for the representation of complex topographic feature types. Complex feature types are viewed as integrated relations between basic features for a basic purpose. In the context of topographic science, such component assemblages are supported by resource systems and found on the local landscape. Ontologies are organized within six thematic modules of a domain ontology called Topography that includes within its sphere basic feature types, resource systems, and landscape types. Context is constructed not only as a spatial and temporal setting, but a setting also based on environmental processes. Types of spatial relations that exist between components include location, generative processes, and description. An example is offered in a complex feature type ‘mine.’ The identification and extraction of complex feature types are an area for future research.

  9. Vaginal Cancer

    Science.gov (United States)

    Vaginal cancer is a rare type of cancer. It is more common in women 60 and older. You are also more likely to get it if you have had a human ... test can find abnormal cells that may be cancer. Vaginal cancer can often be cured in its ...

  10. Lung Cancer

    Science.gov (United States)

    Lung cancer is one of the most common cancers in the world. It is a leading cause of cancer death in men and women in the United States. Cigarette smoking causes most lung cancers. The more cigarettes you smoke per day and ...

  11. Childhood Cancer

    Science.gov (United States)

    ... Story" 5 Things to Know About Zika & Pregnancy Childhood Cancer KidsHealth > For Parents > Childhood Cancer Print A A A Text Size What's ... in children, but can happen. The most common childhood cancers are leukemia , lymphoma , and brain cancer . As ...

  12. Lung Cancer

    Science.gov (United States)

    ... spreads in different ways, and each is treated differently. Non-small cell lung cancer is more common than small cell lung cancer. Small cell lung cancer grows more quickly and is more likely to spread to other organs in the body. Learn more about non-small cell lung cancer. Learn ...

  13. Aerodigestive cancers: laryngeal cancer.

    Science.gov (United States)

    Haws, Luke; Haws, Bryn Taylor

    2014-09-01

    Cancers of the larynx account for approximately 12,000 new cancer cases per year in the United States. The most common risk factors are tobacco and alcohol use, but human papillomavirus (HPV) has been identified in 26.6% of laryngeal cancers. Symptoms develop as the tumor infiltrates the vocal cords and/or surrounding structures, and patients commonly present with hoarseness or cough. Histologically, the vast majority of tumors are squamous cell carcinomas, which, for staging purposes, are categorized by subsite. These develop most often from the glottis, followed by the supraglottis and subglottis. Survival rates for early- and late-stage disease range from 56% to 93% and 29% to 56%, respectively. Unlike with other head and neck cancers, the prognostic significance of HPV-related laryngeal cancer is unclear. Advances in organ-preserving surgical techniques allow patients to maintain physiologic functions without compromising survival rates, especially for early-stage disease. Patients requiring more intensive treatment, including total laryngectomy and chemoradiation, will experience significant morbidity and lifestyle changes. The ability to communicate using a voice prosthesis is of primary importance, and the prosthesis must be tailored to each patient's needs and preferences. For patients with metastatic or nonresectable disease, palliative care should be considered. PMID:25198384

  14. Feature Selection: A Data Perspective

    OpenAIRE

    Li, Jundong; Cheng, Kewei; Wang, Suhang; Morstatter, Fred; Trevino, Robert P.; Tang, Jiliang; Liu, Huan

    2016-01-01

    Feature selection, as a data preprocessing strategy, has been proven to be effective and efficient in preparing high-dimensional data for data mining and machine learning problems. The objectives of feature selection include: building simpler and more comprehensible models, improving data mining performance, and preparing clean, understandable data. The recent proliferation of big data has presented some substantial challenges and opportunities of feature selection algorithms. In this survey,...

  15. Pathology features of incidentally discovered prostatic cancer from radical cystectomy and its effects on the patients prognosis%膀胱癌根治术患者前列腺偶发癌的临床病理特点及其对预后的影响

    Institute of Scientific and Technical Information of China (English)

    胡小鹏; 薛文瑞; 王伟; 王勇; 张小东

    2016-01-01

    Objective To assess the incidence,clinic feature,pathological characteristics and prognosis of incidental prostate cancer from specimens via radical cystoprostatectomy (RCP) for muscleinvasive bladder cancer.The postoperative erectile function in patients with NVB operation are also to be evaluated.Methods Between Jan 2002 and Jan 2015,150 male patients with bladder cancer who underwent radical cystoprostatectomy in our center were included in this study.133 patients underwent open surgery and 17 cases underwent laparoscopic operation (13 patients underwent NVB operation).The average age of 150 patients was 63 years (ranging 41 to 83 years).The average tPSA was 3 ng/ml(ranging 0.2 to 7.8 ng/ml).The digital rectal examination was negative,CT results didnt exhibit the evident of abnormality in prostate.Results Overall,incidental prostate cancer was diagnosed in 11 male patients (7.3%).The pathological diagnosis are all prostatic adenocarcinoma.In those patients,the mean age was 65.5 years (ranging 42 to 82 years).The mean tPSA at the time of surgery was 2.6 ng/ml (0.3-4.0 ng/ml).There was no statistical significance of tPSA values in the incidental prostate cancer group and non risk group (2.6vs.3.2ng/ml)(P > 0.05).The preoperative enhanced CT imaging showed normal prostate in 7 cases,prostate hyperplasia in 2 cases,prostate calcification in 1 cases and bladder cancer invasion into the prostate in 1 cases.9 cases of incidental prostate cancer are low risk grade (Gleason score ≤ 6,the clinical stage ≤T2).Among 11 cases,bladder cancer histologic type in 10 cases was transitional cell carcinoma and small cell carcinoma in 1 case.According to the TNM classification,4 cases were less than pT2 stage and 7 cases were more than pT3 stage.11 patients were followed up between 6 to 24 months (mean 10 months).All patient survived at the end of study without the treatment of castration.Among 13 cases accepted NVB operation,8 cases achieve the preoperative level of

  16. Prostate cancer - resources

    Science.gov (United States)

    Resources - prostate cancer ... The following organizations are good resources for information on prostate cancer : American Cancer Society -- www.cancer.org/cancer/prostatecancer/index National Cancer Institute -- www.cancer.gov/cancertopics/ ...

  17. Understanding Cancer Prognosis

    Medline Plus

    Full Text Available ... Bladder Cancer Breast Cancer Colorectal Cancer Kidney (Renal Cell) Cancer Leukemia Lung Cancer Lymphoma Pancreatic Cancer Prostate ... grade, which refers to how abnormal the cancer cells look under a microscope. Grade provides clues about ...

  18. Understanding Cancer Prognosis

    Medline Plus

    Full Text Available ... Types Recurrent Cancer Common Cancer Types Bladder Cancer Breast Cancer Colorectal Cancer Kidney (Renal Cell) Cancer Leukemia Lung ... Advisory Board Meetings Cancer Currents Blog Research Findings Drug Approvals Precision Medicine Leadership Views 2017 Annual Plan & ...

  19. What Is Breast Cancer?

    Science.gov (United States)

    ... Next Topic Types of breast cancers What is breast cancer? Breast cancer starts when cells in the breast ... breast cancer? ” and Non-cancerous Breast Conditions . How Breast Cancer Spreads Breast cancer can spread through the lymph ...

  20. Cryotherapy for prostate cancer

    Science.gov (United States)

    Cryosurgery-prostate cancer; Cryoablation-prostate cancer ... Prostate Cancer. American Cancer Society. www.cancer.org/cancer/prostatecancer/detailedguide/prostate-cancer-treating-cryosurgery. Accessed August 31, 2015. Horwich ...

  1. Understanding Cancer Prognosis

    Medline Plus

    Full Text Available ... about Advanced Cancer Research Managing Cancer Care Finding Health Care Services Advance Directives Using Trusted Resources Understanding Cancer ... Cancer Advanced Cancer & Caregivers Managing Cancer Care Finding Health Care Services Advance Directives Using Trusted Resources Cancer Types ...

  2. Understanding Cancer Prognosis

    Medline Plus

    Full Text Available ... Search About Cancer Causes and Prevention Risk Factors Genetics Cancer Prevention Overview Cancer Prevention Overview–for health ... Is Cancer Cancer Statistics Causes & Prevention Risk Factors Genetics Cancer Prevention Overview Screening Cancer Screening Overview Screening ...

  3. Diet and cancer

    Science.gov (United States)

    Fiber and cancer; Cancer and fiber; Nitrates and cancer; Cancer and nitrates ... DIET AND BREAST CANCER The link between nutrition and breast cancer has been well studied. To reduce risk of breast cancer the American ...

  4. Understanding Cancer Prognosis

    Medline Plus

    Full Text Available ... Talking about Advanced Cancer Coping with Your Feelings Planning for Advanced Cancer Advanced Cancer and Caregivers Questions ... Talking About Advanced Cancer Coping With Your Feelings Planning for Advanced Cancer Advanced Cancer & Caregivers Managing Cancer ...

  5. Emergent interfaces for feature modularization

    CERN Document Server

    Ribeiro, Márcio; Brabrand, Claus

    2014-01-01

    Developers frequently introduce errors into software systems when they fail to recognise module dependencies. Using forty-three software families and Software Product Lines (SPLs), where the majority are commonly used in industrial practice, the authors reports on the feature modularization problem and provides a study of how often it may occur in practice. To solve the problem they present the concept of emergent feature modularization which aims to establish contracts between features to prevent developers from breaking other features when performing a maintenance task.

  6. Novel Facial Features Segmentation Algorithm

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    An efficient algorithm for facial features extractions is proposed. The facial features we segment are the two eyes, nose and mouth. The algorithm is based on an improved Gabor wavelets edge detector, morphological approach to detect the face region and facial features regions, and an improved T-shape face mask to locate the extract location of facial features. The experimental results show that the proposed method is robust against facial expression, illumination, and can be also effective if the person wearing glasses, and so on.

  7. Cancer screening

    OpenAIRE

    Krishna Prasad

    1987-01-01

    Cancer screening is a means to detect cancer early with the goal of decreasing morbidity and mortality. At present, there is a reasonable consensus regarding screening for breast, cervical and colorectal cances and the role of screening is under trial in case of cancers of the lung,  ovaries and prostate. On the other hand, good screening tests are not available for some of the commonest cancers in India like the oral, pharyngeal, esophageal and stomach cancers.

  8. Clinicopathological features and managements of radiation enterocolitis

    Energy Technology Data Exchange (ETDEWEB)

    Takashima, Shigeki; Kinami, Yoshio (Kanazawa Medical Univ., Ishikawa (Japan))

    1990-11-01

    During the past 12 years, delayed radiation enterocolitis developed in 22 patients treated for uterine cervical cancer or endometrial cancer. Their ages ranged from 36 to 77 years with an average age of 62. Ten patients received external irradiation and the other 12 patients received the combined external and internal irradiation. Radiation doses were 50 Gy-156 Gy with an average dose of 80 Gy. All patients had early radiation effects manifested by myxoid bloody stool (82%), diarrhea (46%), defecation disorder (18%), and tenesmus like symptoms (9%). These symptoms resolved within one month after irradiation. The most common symptom for delayed radiation effects was anal hemorrhage and melena (73%), followed by ileus like symptoms and abdominal pain (14%). Defecation disorder, diarrhea, and anemia were observed in one each patient (5%). Latency period ranged from 4 months to 13 years after radiation treatment, with the greatest number (86%) having it within one year and 3 months. There was no definitive correlation between radiation doses and latency period. Histopathological features included marked proliferation extending from the submucosal layer to the muscular layer, endometrial thickening of the small vessels, and thrombopoiesis. Although surgical treatment was performed in 20 patients, favorable outcome was not achieved. (N.K.).

  9. Anomalous features of EMT during keratinocyte transformation.

    Directory of Open Access Journals (Sweden)

    Tamar Geiger

    Full Text Available During the evolution of epithelial cancers, cells often lose their characteristic features and acquire a mesenchymal phenotype, in a process known as epithelial-mesenchymal transition (EMT. In the present study we followed early stages of keratinocyte transformation by HPV16, and observed diverse cellular changes, associated with EMT. We compared primary keratinocytes with early and late passages of HF1 cells, a cell line of HPV16-transformed keratinocytes. We have previously shown that during the progression from the normal cells to early HF1 cells, immortalization is acquired, while in the progression to late HF1, cells become anchorage independent. We show here that during the transition from the normal state to late HF1 cells, there is a progressive reduction in cytokeratin expression, desmosome formation, adherens junctions and focal adhesions, ultimately leading to poorly adhesive phenotype, which is associated with anchorage-independence. Surprisingly, unlike "conventional EMT", these changes are associated with reduced Rac1-dependent cell migration. We monitored reduced Rac1-dependent migration also in the cervical cancer cell line SiHa. Therefore we can conclude that up to the stage of tumor formation migratory activity is eliminated.

  10. Cancer diagnosis by autofluorescence of blood components

    Energy Technology Data Exchange (ETDEWEB)

    Masilamani, V. E-mail: masilamaniv@yahoo.com; Al-Zhrani, K.; Al-Salhi, M.; Al-Diab, A.; Al-Ageily, M

    2004-09-01

    The autofluorescence of blood components of healthy volunteers and cancer patients of different etiology were analyzed using a steady-state spectrofluorometer. A significant contrast between healthy and diseased blood could be established. Blood components of patients of gastric cancer, breast cancer and Hodgkin's lymphoma showed distinct and enhanced fluorescence band (around 630 nm) due to the porphyrin fluorophore. From the ratio fluorometry, a correlation to the stages of cancer could be also brought forth. We could indicate reasonably well the features of early stages and the growth rate of a few cancers and benign tumors.

  11. Expression of △NP63/TAP63 in Epithelium Ovarian Cancer and Its Clinicopathological Features%NP63/TAP63在卵巢上皮性肿瘤组织中的表达及其与临床病理关系

    Institute of Scientific and Technical Information of China (English)

    王滟; 杨业洲; 谢兰; 杨年; 郭波

    2011-01-01

    Objective To explore the expression of ANP63 / TAP63 in human epithelial ovarian tumor tissues and its relationship with the clinicopathological features. Methods Fluorescent quantitative PCR method was used to detect 54 cases of ANP63 / TAP63 gene level in 54 patients with epithelial ovarian tumors diagnosed between 2002 and 2004. Results ANP63 expression in the 33 cases of ovarian epithelial cell carcinoma was higher than that in the 21 cases of benign epithelial tumor tissue. The expression in ovarian epithelial cell carcinoma was concerned with the pathological staging of tumor (P0. 05). Conclusion ANP63 in epithelial ovarian cancer is highly expressed, which may become the molecular makers with diagnosis and prognosis of epithelial ovarian cancer diagnosis in the future.%目的 研究△NP63/TAP63在上皮性卵巢肿瘤组织中的表达及其与临床病理特征的关系.方法 运用荧光定量聚合酶链反应方法检测2002年- 2004年54例卵巢上皮性肿瘤中△NP63/TAP63的基因水平.结果 33例卵巢上皮细胞癌组织中△NP63的表达高于21例良性上皮性肿瘤中组织.卵巢上皮细胞癌中的表达强度与肿瘤组织病理学分期相关(P<0.05),良性肿瘤的表达低于恶性肿瘤(P<0.05).△NP63的表达高于TAP63(P<0.05);各组间TAP63的表达差异无统计学意义(P>0.05).结论 △NP63在上皮性卵巢癌中高表达,可能成为上皮性卵巢癌诊断及预后的分子标志物.

  12. A CAD System for Lesion Detection in Cervigram Based on Laws Textural Feature

    Directory of Open Access Journals (Sweden)

    RamaPraba P.S

    2014-01-01

    Full Text Available Cervical cancer is the second most common cancer among the women worldwide. A computer aided diagnosis system can help colposcopist to analyze cervical images more accurately. This work aims to detect lesion in cervical images based on Laws textural feature and nearest neighbor classifier and it can be used as a diagnostic tool. The images used for the detection of cervical cancer are taken by using colposcope which magnifies the cells of cervix. The Laws textural features are extracted from the cervical images and input to nearest neighbor classifier. A totally 240 images are used for the evaluation and an overall accuracy of 96% is obtained.

  13. Spatial features register: toward standardization of spatial features

    Science.gov (United States)

    Cascio, Janette

    1994-01-01

    As the need to share spatial data increases, more than agreement on a common format is needed to ensure that the data is meaningful to both the importer and the exporter. Effective data transfer also requires common definitions of spatial features. To achieve this, part 2 of the Spatial Data Transfer Standard (SDTS) provides a model for a spatial features data content specification and a glossary of features and attributes that fit this model. The model provides a foundation for standardizing spatial features. The glossary now contains only a limited subset of hydrographic and topographic features. For it to be useful, terms and definitions must be included for other categories, such as base cartographic, bathymetric, cadastral, cultural and demographic, geodetic, geologic, ground transportation, international boundaries, soils, vegetation, water, and wetlands, and the set of hydrographic and topographic features must be expanded. This paper will review the philosophy of the SDTS part 2 and the current plans for creating a national spatial features register as one mechanism for maintaining part 2.

  14. Partial Epilepsy with Auditory Features

    Directory of Open Access Journals (Sweden)

    J Gordon Millichap

    2004-07-01

    Full Text Available The clinical characteristics of 53 sporadic (S cases of idiopathic partial epilepsy with auditory features (IPEAF were analyzed and compared to previously reported familial (F cases of autosomal dominant partial epilepsy with auditory features (ADPEAF in a study at the University of Bologna, Italy.

  15. The Nature of Design Features

    DEFF Research Database (Denmark)

    Andreasen, Mogens Myrup; Mortensen, Niels Henrik

    1997-01-01

    In this paper it is argued that the core of design features is design characteristics, i.e. the design attributes which define the design (the result from design work) and determine the behaviour. A definition of features as relationships between product design characteristics and life phase system...... characteristics is proposed....

  16. Epithelial-Mesenchymal Transition and Breast Cancer

    Directory of Open Access Journals (Sweden)

    Yanyuan Wu

    2016-01-01

    Full Text Available Breast cancer is the most common cancer in women and distant site metastasis is the main cause of death in breast cancer patients. There is increasing evidence supporting the role of epithelial-mesenchymal transition (EMT in tumor cell progression, invasion, and metastasis. During the process of EMT, epithelial cancer cells acquire molecular alternations that facilitate the loss of epithelial features and gain of mesenchymal phenotype. Such transformation promotes cancer cell migration and invasion. Moreover, emerging evidence suggests that EMT is associated with the increased enrichment of cancer stem-like cells (CSCs and these CSCs display mesenchymal characteristics that are resistant to chemotherapy and target therapy. However, the clinical relevance of EMT in human cancer is still under debate. This review will provide an overview of current evidence of EMT from studies using clinical human breast cancer tissues and its associated challenges.

  17. Cancer Patients, Doctors Often Disagree about Prognosis

    Science.gov (United States)

    ... medlineplus.gov/news/fullstory_159903.html Cancer Patients, Doctors Often Disagree About Prognosis Those with advanced disease are likely to be more optimistic than their doctor, study shows To use the sharing features on ...

  18. Comparison of Uncinate Process Cancer and Non-Uncinate Process Pancreatic Head Cancer.

    Science.gov (United States)

    Liu, Chang; Tian, Xiaodong; Xie, Xuehai; Gao, Hongqiao; Zhuang, Yan; Yang, Yinmo

    2016-01-01

    The special anatomical position accounts for unusual clinicopathological features of uncinate process cancer. This study aimed to compare clinicopathological features of patients with uncinate process cancer to patients with non-uncinate process pancreatic head cancer. Total 160 patients with pancreatic head cancer were enrolled and classified into two groups: uncinate process cancer and non-uncinate process pancreatic head cancer. We found that the ratio of vascular invasion was significantly higher in patients with uncinate process cancer than in patients with non-uncinate process pancreatic head cancer. In addition, the rate of R1 resection was significantly higher in patients with uncinate process cancer. Furthermore, the median disease-free survival (11 months vs. 15 months, p=0.043) and overall survival (15 months vs. 19 months, p=0.036) after R0 resection were lower for uncinate process cancer. Locoregional recurrence was more frequent (p=0.017) and earlier (12 months vs. 36 months; p=0.002) in patients with uncinate process cancer than in patients with non-uncinate process pancreatic head cancer. In conclusion, uncinate process cancer is more likely to invade blood vessel and has worse prognosis due to the earlier and more frequent locoregional recurrence.

  19. Molecular genetics of colorectal cancer.

    Science.gov (United States)

    Bogaert, Julie; Prenen, Hans

    2014-01-01

    Approximately 90% of colorectal cancer cases are sporadic without family history or genetic predisposition, while in less than 10% a causative genetic event has been identified. Historically, colorectal cancer classification was only based on clinical and pathological features. Many efforts have been made to discover the genetic and molecular features of colorectal cancer, and there is more and more evidence that these features determine the prognosis and response to (targeted) treatment. Colorectal cancer is a heterogeneous disease, with three known major molecular groups. The most common is the chromosomal instable group, characterized by an accumulation of mutations in specific oncogenes and tumor suppressor genes. The second is the microsatellite instable group, caused by dysfunction of DNA mismatch repair genes leading to genetic hypermutability. The CpG Island Methylation phenotype is the third group, distinguished by hypermethylation. Colorectal cancer subtyping has also been addressed using genome-wide gene expression profiling in large patient cohorts and recently several molecular classification systems have been proposed. In this review we would like to provide an up-to-date overview of the genetic aspects of colorectal cancer. PMID:24714764

  20. CLINICOPATHOLOGICAL FEATURES OF RER+ COLORECTAL CARCINOMA

    Institute of Scientific and Technical Information of China (English)

    XU Ning; DING Yan-Qing; XU LI; Qiu Hong-ming

    1999-01-01

    Objective: Replication errors (RER) is related to initiation and development of colorectal carcinoma (CRC).To investigate the different biological behavior of RER+ and RER- CRC. Methods: Silver staining PCR-single strand conformation polymorphism (PCR-SSCP) and denatured polyacrylamide gel electrophoresis methods were used to detect microsatellite instability (MSI) at 4 loci on chromosome 2, 5, 17 in paraffin-embedded specimens of 60 colorectal carcinoma (CRC) and their paired normal tissue.RER+ was scored if 2 or more loci behaved as gaining extra bands. Results: The results showed that RER+ was found in 19/60 CRC, among which 7 cases had a family history.According to the criteria of Amsterdam, 4 were diagnosed as hereditary nonpolyposis colorectal cancer (HNPCC), and of which 3 cases were RER+. The ratio RER+ in HNPCC (75%) was significantly higher than that among sporadic CRC (28.5%). Most of the RER+ CRC have the feature of poorly differentiated adenocarcinoma (P<0.01), the tendency to involve the right side of the colon (P<0.05), a higher proportion with a family history (P<0.05), Duckes' A and B stage (P<0.05). Conclusion: The results indicated that RER+ is a relatively common molecular event in CRC.There are different clinico-pathological features and behavior between RER+ and RER- CPC.

  1. Pneumatosis intestinalis: CT findings and clinical features

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Hye Lin; Lee, Hae Kyung; Park, Seong Jin; Yi, Boem Ha; Ko, Bong Min; Hong, Hyun Sook; Paik, Sang Hyun [Soonchunhyang University Hospital Bucheon, Bucheon (Korea, Republic of)

    2008-02-15

    The purpose of this study is to evaluate the CT findings and clinical features of patients with pneumatosis intestinalis. From January 2001 to October 2007, 15 patients with pneumatosis intestinalis were diagnosed by the use of CT. We analyzed the clinical features and CT findings to assess the involvement site, the presence of portal and mesenteric vein gas, and the existence of accompanied ischemic change. Of the 15 patients, five patients had end stage renal disease (33.3%), two patients underwent a gastrectomy, one patient underwent a laminectomy, one patient had tuberculous enteritis, one patient had lung cancer and one patient had pneumonia. Four patients presented with no specific disease. There was portal or mesenteric venous gas in six cases, and strangulation or an ischemic change of the bowel in five cases. Otherwise, pneumatosis intestinalis was associated with hydropneumoperitoneum in two cases, pneumoperitoneum in one case and a single case of perforated appendicitis. Nine patients underwent surgery for ischemic change of the bowel, pneumoperitoneum, appendicitis, and a clinical sign of panperitonitis. Among the remaining six patients, three patients recovered and were discharged, and three patients expired during progression of the disease. End stage renal disease is the most common condition associated with pneumatosis intestinalis. The presence of portomesenteric venous gas, ischemic change of the bowel, and linear pneumatosis intestinalis are indicative of a poor prognosis.

  2. Clinical and morphological features of carcinoid tumors

    Directory of Open Access Journals (Sweden)

    Markovskiy V.D.

    2013-01-01

    Full Text Available Carcinoid tumors are rare tumors in practice of doctors of various specialties. These tumors are histological findings in the most cases because they are masked by clinical and morphological features of neoplastic and non-neoplastic diseases. In some cases, carcinoid tumors generally remain undetected due to lack of awareness among physicians about clinical and morphological characteristics of such disease. Believe it is important to recall the features of this tumor. The article presents the literature data and own observations from practice of carcinoid tumor of rare localization: bronchus, colon, mammary gland. In all three of our observations, where cancer was clinically suspected, the diagnosis of carcinoid tumor was made only after histology. Only complications have led to the surgical intervention, and, unfortunately, the diagnosis of carcinoid was made after death. In the latter case carcinoid most likely played an important role in thanatogenesis. Unification of efforts of doctors in various fields will make progress in the diagnosis and treatment of carcinoid tumors, extending the lives of patients suffering from this disorder.

  3. Hopewell Furnace NHS Small Scale Features (Linear Features)

    Data.gov (United States)

    National Park Service, Department of the Interior — This shapefile represents the linear small scale features found at Hopewell Furnace National Historic Site based on the Cultural Landscape Report completed in...

  4. Language Features and Culture Features on Short Message

    Institute of Scientific and Technical Information of China (English)

    王佳

    2013-01-01

    Mobile phone is regarded as“the fifth media”after newspaper,radio,TV and the Internet.The mobile phone short message further highlights the importance of written signs in communication.“The thumb revolution”is eagerly anticipating one kind of trend by the hand replace of mouth,sound substitute for the quiet around us. My paper will analyze the language features and the culture features of mobile phone short messages which are written in Chinese and English.

  5. Radiological and pathological features of nonpalpable breast lesions marked with harpoon guided by mammography as a method for the diagnosis of early breast cancer: descriptive retrospective study of the period between January 2009 and May 2010 at the Hospital San Juan de Dios

    International Nuclear Information System (INIS)

    A retrospective study, descriptive was performed, whose main objective has been to analyze the radiological and pathological features of nonpalpable breast lesions for which surgical biopsy was performed guided by harpoon in the Servicio de Radiologia at the Hospital San Juan de Dios during the period between January 2009 and May 2010. The study has consisted in reviewing of all biopsies guided radio by harpoon made during this period. For each procedure was recorded the classification BI-RADS, pathological anatomy reports and epidemiological data of patients. The analysis has included the variables of age, presence or absence of previous mammograms for comparison, presence or absence of menopause, presence of early menarche (by reference to women with menarche before age 12), parity of the patients, history of breastfeeding, use or nonuse of hormone replacement therapy, personal history of relevance and a positive history for breast cancer in patients in first, second or third degree of consanguinity. A total of 129 markings were performed in the study period. Three patients were excluded because the classification BI-RADS given was 3 or 0, in which cases the biopsy is not indicated. All markings were done in an analog mammography brand Bennett and chair designed for positioning patients. Prior to the biopsy, the technical specialist in mammography interviewed patients to complete the epidemiological data sheet. Following the verification of the correct placement on the harpoon, the patients were carried to operating room for the realization of the biopsy. Subsequently, the presence or absence of surgical specimen was evaluated to verify the proper extraction of the lesion under study. (author)

  6. Cancer: beyond speciation.

    Science.gov (United States)

    Vincent, Mark D

    2011-01-01

    A good account of the nature of cancer should provide not only a description of its consistent features, but also how they arise, how they are maintained, why conventional chemotherapy succeeds, and fails, and where to look for better targets. Cancer was once regarded as enigmatic and inexplicable; more recently, the "mutation theory," based on random alterations in a relatively small set of proto-oncogenes and tumor suppressor genes, has enjoyed widespread acceptance. The "mutation theory," however, is noticeable for its failure to explain the basis of differential chemosensitivity, for providing a paucity of targets, especially druggable ones, and for justifying the development of targeted therapies with, in general, disappointingly abbreviated clinical benefit. Furthermore, this theory has mistakenly predicted a widespread commonality of consistent genetic abnormalities across the range of cancers, whereas the opposite, that is, roiling macrogenomic instability, is generally the rule. In contrast, concerning what actually is consistent, that is, the suite of metabolic derangements common to virtually all, especially aggressive, cancers, the "Mutation Theory" has nothing to say. Other hypotheses merit serious consideration "aneuploidy theories" posit whole-genome instability and imbalance as causally responsible for the propagation of the tumor. Another approach, that is, "derepression atavism," suggests cancer results from the release of an ancient survival program, characterized by the emergence of remarkably primitive features such as unicellularity, fermentation, and immortality; existential goals are served by heuristic genomic instability coupled with host-to-tumor biomass interconversion, mediated by the Warburg effect, a major component of the program. Carcinogenesis is here seen as a process of de-speciation; however, genomic nonrestabilization raises issues as to where on the tree of life cancers belong, as a genuinely alternative modus vivendi

  7. Familial colorectal cancer type X

    DEFF Research Database (Denmark)

    Dominguez-Valentin, Mev; Therkildsen, Christina; Da Silva, Sabrina;

    2015-01-01

    Heredity is a major cause of colorectal cancer, but although several rare high-risk syndromes have been linked to disease-predisposing mutations, the genetic mechanisms are undetermined in the majority of families suspected of hereditary cancer. We review the clinical presentation, histopathologi...... features, and the genetic and epigenetic profiles of the familial colorectal cancer type X (FCCTX) syndrome with the aim to delineate tumor characteristics that may contribute to refined diagnostics and optimized tumor prevention.......Heredity is a major cause of colorectal cancer, but although several rare high-risk syndromes have been linked to disease-predisposing mutations, the genetic mechanisms are undetermined in the majority of families suspected of hereditary cancer. We review the clinical presentation, histopathologic...

  8. Feature

    OpenAIRE

    Camilleri, Kenneth; Falzon, Owen; Camilleri, Tracey; Duca, Edward

    2012-01-01

    Decades-long research into the field of brain to computer interface (BCI) devices seems close to be bearing fruit. These devices could provide communication tools to Malta's growing number of older people and the disabled, while local gaming companies could exploit a new niche entertainment market. http://www.um.edu.mt/think/moving-objects-with-your-mind/

  9. Aneuploidy and proteotoxic stress in cancer

    OpenAIRE

    Donnelly, N; Storchova, Z.

    2015-01-01

    Although nearly ubiquitous in cancer, aneuploidy exerts detrimental effects on human cells. We recently demonstrated that aneuploid human cells exhibit impaired heat shock factor protein 1 (HSF1) and HSP90 function, suggesting a functional link between two recurring features of cancer cells: aneuploidy and proteotoxic stress. Further, our fi ndings implicate HSF1 as a key factor in mitigating the effects of aneuploidy

  10. Lung Cancer - Multiple Languages: MedlinePlus

    Science.gov (United States)

    ... Are Here: Home → Multiple Languages → All Health Topics → Lung Cancer URL of this page: https://medlineplus.gov/languages/lungcancer.html Other topics ... V W XYZ List of All Topics All Lung Cancer - Multiple Languages ... To use the sharing features on this page, please enable JavaScript. Arabic (العربية) Bosnian (Bosanski) Chinese - ...

  11. DNA methylation markers for breast cancer prognosis

    OpenAIRE

    Dedeurwaerder, Sarah; Fuks, François

    2012-01-01

    Currently, most of the prognostic and predictive gene expression signatures emerging for breast cancer concern the tumor component. In Dedeurwaerder et al. we show that DNA methylation profiling of breast tumors is a particularly sensitive means of capturing features of the immune component of breast tumors. Most importantly, correlation is observed between T-cell marker genes and breast cancer clinical outcome.

  12. Biomarkers of HIV-associated Cancer

    OpenAIRE

    Brian Thabile Flepisi; Patrick Bouic; Gerhard Sissolak; Bernd Rosenkranz

    2014-01-01

    Cancer biomarkers have provided great opportunities for improving the management of cancer patients by enhancing the efficiency of early detection, diagnosis, and efficacy of treatment. Every cell type has a unique molecular signature, referred to as biomarkers, which are identifiable characteristics such as levels or activities of a myriad of genes, proteins, or other molecular features. Biomarkers can facilitate the molecular definition of cancer, provide information about the course of can...

  13. The Canadian Lung Cancer Conference 2016

    OpenAIRE

    Melosky, B.; Ho, C

    2016-01-01

    Each February, the Canadian Lung Cancer Conference brings together lung cancer researchers, clinicians, and care professionals who are united in their commitment to improve the care of patients with lung cancer. This year’s meeting, held 11–12 February, featured a resident education session, a welcome dinner, networking sessions, lectures, breakout sessions, debates, and a satellite symposium. Key themes from this year’s meeting included innovations across the care spectrum and results of rec...

  14. Nutrition in Head and Neck Cancer Patients

    OpenAIRE

    Varkey, Prashanth; Tang, Wen-Ruay; Tan, Ngian Chye

    2010-01-01

    Anorexia and cachexia frequently complicate the late stages of malignancy and can be a prominent feature of early disease. The resulting weight loss significantly affects the morbidity and mortality of the cancer patient. A fundamental understanding of nutrition and the pathophysiology of cancer cachexia will aid in diligent treatment decisions to achieve optimal results. The pathophysiology of cancer cachexia is discussed, together with methods of nutritional assessment, nutritional requirem...

  15. Breast Metastases from Extramammary Malignancies: Typical and Atypical Ultrasound Features

    Energy Technology Data Exchange (ETDEWEB)

    Mun, Sung Hee [Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710 (Korea, Republic of); Department of Radiology, Catholic University of Daegu College of Medicine, Daegu 712-702 (Korea, Republic of); Ko, Eun Young; Han, Boo-Kyung; Shin, Jung Hee [Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710 (Korea, Republic of); Kim, Suk Jung [Department of Radiology, Inje University College of Medicine, Busan Paik Hospital, Busan 614-735 (Korea, Republic of); Cho, Eun Yoon [Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710 (Korea, Republic of)

    2014-07-01

    Breast metastases from extramammary malignancies are uncommon. The most common sources are lymphomas/leukemias and melanomas. Some of the less common sources include carcinomas of the lung, ovary, and stomach, and infrequently, carcinoid tumors, hypernephromas, carcinomas of the liver, tonsil, pleura, pancreas, cervix, perineum, endometrium and bladder. Breast metastases from extramammary malignancies have both hematogenous and lymphatic routes. According to their routes, there are common radiological features of metastatic diseases of the breast, but the features are not specific for metastases. Typical ultrasound (US) features of hematogenous metastases include single or multiple, round to oval shaped, well-circumscribed hypoechoic masses without spiculations, calcifications, or architectural distortion; these masses are commonly located superficially in subcutaneous tissue or immediately adjacent to the breast parenchyma that is relatively rich in blood supply. Typical US features of lymphatic breast metastases include diffusely and heterogeneously increased echogenicities in subcutaneous fat and glandular tissue and a thick trabecular pattern with secondary skin thickening, lymphedema, and lymph node enlargement. However, lesions show variable US features in some cases, and differentiation of these lesions from primary breast cancer or from benign lesions is difficult. In this review, we demonstrate various US appearances of breast metastases from extramammary malignancies as typical and atypical features, based on the results of US and other imaging studies performed at our institution. Awareness of the typical and atypical imaging features of these lesions may be helpful to diagnose metastatic lesions of the breast.

  16. Breast Metastases from Extramammary Malignancies: Typical and Atypical Ultrasound Features

    International Nuclear Information System (INIS)

    Breast metastases from extramammary malignancies are uncommon. The most common sources are lymphomas/leukemias and melanomas. Some of the less common sources include carcinomas of the lung, ovary, and stomach, and infrequently, carcinoid tumors, hypernephromas, carcinomas of the liver, tonsil, pleura, pancreas, cervix, perineum, endometrium and bladder. Breast metastases from extramammary malignancies have both hematogenous and lymphatic routes. According to their routes, there are common radiological features of metastatic diseases of the breast, but the features are not specific for metastases. Typical ultrasound (US) features of hematogenous metastases include single or multiple, round to oval shaped, well-circumscribed hypoechoic masses without spiculations, calcifications, or architectural distortion; these masses are commonly located superficially in subcutaneous tissue or immediately adjacent to the breast parenchyma that is relatively rich in blood supply. Typical US features of lymphatic breast metastases include diffusely and heterogeneously increased echogenicities in subcutaneous fat and glandular tissue and a thick trabecular pattern with secondary skin thickening, lymphedema, and lymph node enlargement. However, lesions show variable US features in some cases, and differentiation of these lesions from primary breast cancer or from benign lesions is difficult. In this review, we demonstrate various US appearances of breast metastases from extramammary malignancies as typical and atypical features, based on the results of US and other imaging studies performed at our institution. Awareness of the typical and atypical imaging features of these lesions may be helpful to diagnose metastatic lesions of the breast

  17. Imaging features of thoracic metastases from gynecologic neoplasms.

    Science.gov (United States)

    Martínez-Jiménez, Santiago; Rosado-de-Christenson, Melissa L; Walker, Christopher M; Kunin, Jeffery R; Betancourt, Sonia L; Shoup, Brenda L; Pettavel, Paul P

    2014-10-01

    Gynecologic malignancies are a heterogeneous group of common neoplasms and represent the fourth most common malignancy in women. Thoracic metastases exhibit various imaging patterns and are usually associated with locally invasive primary neoplasms with intra-abdominal spread. However, thoracic involvement may also occur many months to years after initial diagnosis or as an isolated finding in patients without evidence of intra-abdominal neoplastic involvement. Thoracic metastases from endometrial carcinoma typically manifest as pulmonary nodules and lymphadenopathy. Thoracic metastases from ovarian cancer often manifest with small pleural effusions and subtle pleural nodules. Thoracic metastases to the lungs, lymph nodes, and pleura may also exhibit calcification and mimic granulomatous disease. Metastases from fallopian tube carcinomas exhibit imaging features identical to those of ovarian cancers. Most cervical cancers are of squamous histology, and while solid pulmonary metastases are more common, cavitary metastases occur with some frequency. Metastatic choriocarcinoma to the lung characteristically manifests with solid pulmonary nodules. Some pulmonary metastases from gynecologic malignancies exhibit characteristic features such as cavitation (in squamous cell cervical cancer) and the "halo" sign (in hemorrhagic metastatic choriocarcinoma) at computed tomography (CT). However, metastases from common gynecologic malignancies may be subtle and indolent and may mimic benign conditions such as intrapulmonary lymph nodes and remote granulomatous disease. Therefore, radiologists should consider the presence of locoregional disease as well as elevated tumor marker levels when interpreting imaging studies because subtle imaging findings may represent metastatic disease. Positron emission tomography/CT may be helpful in identifying early locoregional and distant tumor spread. PMID:25310428

  18. Clinicopathologic factors identify sporadic mismatch repair-defective colon cancers

    DEFF Research Database (Denmark)

    Halvarsson, Britta; Anderson, Harald; Domanska, Katarina;

    2008-01-01

    Identification of sporadic mismatch repair (MMR)-defective colon cancers is increasingly demanded for decisions on adjuvant therapies. We evaluated clinicopathologic factors for the identification of these prognostically favorable tumors. Histopathologic features in 238 consecutive colon cancers...... and excluded 61.5% of the tumors from MMR testing. This clinicopathologic index thus successfully selects MMR-defective colon cancers. Udgivelsesdato: 2008-Feb...

  19. Peculiarities of carcinomatous pleurisies in breast cancer (cytological diagnostic method

    Directory of Open Access Journals (Sweden)

    O. G. Grigoruk

    2010-01-01

    Full Text Available The specific features of carcinomatous pleurisies were studied in 119 patients with breast cancer (BC. The most characteristic properties of the structure of cells and the composition of pleural fluid were noted in infiltrating ductal and lobular BC. A differential diagnosis was made between mesothelioma (17% and ovarian cancer (25%; it was difficult to perform it in lobular cancer.

  20. Cancer signaling networks and their implications for personalized medicine

    DEFF Research Database (Denmark)

    Creixell, Pau

    Amongst the unique features of cancer cells perhaps the most crucial one is the change in the cellular decision-making process. While both non-cancer and cancer cells are constantly integrating different external cues that reach them and computing cellular decisions (e.g. proliferation or apoptos...