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Sample records for benign nontoxic multinodular

  1. A 30-year perspective on radioiodine therapy of benign nontoxic multinodular goiter

    DEFF Research Database (Denmark)

    Bonnema, Steen J; Hegedüs, Laszlo

    2009-01-01

    PURPOSE OF REVIEW: There is no consensus on the ideal treatment of patients with a benign nontoxic multinodular goiter. In some European countries, (131)I therapy has replaced surgery as the treatment of choice in these patients. Recombinant human thyrotropin (rhTSH) is a very potent stimulator...... of the thyroid gland and this review focuses on rhTSH-stimulated (131)I therapy. RECENT FINDINGS: The concept of rhTSH-stimulated (131)I therapy has been tested in several trials during the last 8 years. With this treatment, the goiter reduction is improved by 35-55%, compared with (131)I therapy without rh...... rate of permanent hypothyroidism, whereas other side-effects are very modest when using a rhTSH dose of 0.1 mg or below. SUMMARY: RhTSH-stimulated radioiodine therapy of benign nontoxic multinodular goiter is still an off-label use but several trials have shown that this treatment is significantly more...

  2. Thyroid cancer in toxic and non-toxic multinodular goiter

    Directory of Open Access Journals (Sweden)

    Cerci C

    2007-01-01

    Full Text Available Background : Many authors have claimed that hyperthyroidism protects against thyroid cancer and believed that the incidence of malignancy is lower in patients with toxic multinodular goiter (TMG than in those with non-toxic multinodular goiter. But in recent studies, it was reported that the incidence of malignancy with TMG is not as low as previously thought. Aim : To compare the thyroid cancer incidence in patients with toxic and non-toxic multinodular goiter. Settings and Design : Histology reports of patients treated surgically with a preoperative diagnosis of toxic and non-toxic multinodular goiter were reviewed to identify the thyroid cancer incidence. Patients having a history of neck irradiation or radioactive iodine therapy were excluded from the study. Materials and Methods : We reviewed 294 patients operated between 2001-2005 from toxic and non-toxic multinodular goiter. One hundred and twenty-four of them were toxic and 170 were non-toxic. Hyperthyroidism was diagnosed by elevated tri-iodothyroinine / thyroxine ratios and low thyroid-stimulating hormone with clinical signs and symptoms. All patients were evaluated with ultrasonography and scintigraphy and fine needle aspiration biopsy. Statistical Analysis Used : Significance of the various parameters was calculated by using ANOVA test. Results : The incidence of malignancy was 9% in the toxic and 10.58% in the non-toxic multinodular goiter group. Any significant difference in the incidence of cancer and tumor size between the two groups could not be detected. Conclusions : The incidence of malignancy in toxic multinodular goiter is not very low as thought earlier and is nearly the same in non-toxic multinodular goiter.

  3. Postoperative recurrent nontoxic nodular (multinodular goiter

    Directory of Open Access Journals (Sweden)

    Tolstokorov A.S.

    2011-12-01

    Full Text Available The extensive use of modern methods of examination (ultrasound investigation with Doppler mapping, aspiration (needle biopsy, radiodiagnostics cannot resolve the problem of verification of nodular mass in case of multinodular goiter before operation. Operative intervention is the method of choice in this case, which gives rise to the problem of surgery extent. The present study is useful in improvement of remote results of surgical treatment of multinodular goiter through statistical estimation of recurrent goiter development. The study was retrospective and included 102 consecutively admitted and operated patients with recurrent goiter and 102 patients of control group with first diagnosed and operated goiter. Patients of both groups were in euthyroid state. Patients were admitted to the Clinic of Surgery and Oncology of Raising Skills Faculty of Saratov State Medical University n.a. V. I. Razumovsky from 2000 till 2004. Statistical analyses included calculation of average mean, standard deviation and mean error. Student's ratio was used as the test of validity of average mean. Chi-square test was used for assessment of qualitative characteristics.

  4. Radioiodine therapy in non-toxic multinodular goitre

    International Nuclear Information System (INIS)

    Full text: The effect of radioiodine in the treatment of non-toxic multinodular goitre has not been adequately evaluated. The aim of the study was to see the effect of radioiodine on thyroid size and function in patients with non-toxic multinodular goitre. We prospectively studied 55 non-toxic multinodular goitre patients treated with radioiodine of which 15 were males and 40 were females with age ranged from 25 years to 60 years (mean ± SD 40.45 ± 10.70 years) for a minimum of 12 months. Patients who were selected were those with local compression symptoms or for cosmetic reasons and the treatment was chosen because of a high operative risk or refusal to be operated on. Thyroid volume and T3, T4, TSH of all patients were determined before treatment and 6 months interval after treatment. Radioiodine was given in the dose ranged from 333 MBq (9 mCi) to 555 MBq (15 mCi) (mean ± SD 11.45 ± 2.04 mCi). The mean thyroid volume was reduced from 44.75 ± 37.44 ml to 28.76 ± 27.25 ml at 12 months (p < 0.001) i.e., reduced by 35.73%. Thyroid volume reduction at 6 months was 21.07%. Hypothyroidism occurred in 9.1% of the patients at 12 months. Side effects were few. Three cases developed radiation thyroiditis and two cases developed hyperthyroidism that was managed conservatively. It has been concluded that radioiodine is effective and well tolerated in the treatment of non-toxic multinodular goitre and may be the treatment of choice in elderly patients, in patients in whom surgery is contraindicated and in patients who are unwilling to undergo surgery. (author)

  5. Predictors of Postoperative Hypocalcemia after Thyroidectomy for Nontoxic Multinodular Goiter

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    O V Simakina

    2014-06-01

    Full Text Available The aim of this prospective study was to determine the main factors influencing the development of postoperative hypocalcemia in patients with Gravesdisease after thyroidectomy. Assess whether patients with BG likely to develop postoperative hypocalcemia than those who performed thyroidectomy about nontoxiс multinodular goiter. In this study were prospectively included 54 patients with Gravesdisease, which from October 2011 to May 2013 was performed thyroidectomy. Additionally, as a control group from the database included 48 patients with nontoxiс multinodular goiter, who underwent thyroidectomy in the same time. All patients attended deficit/insufficiency of vitamin D (25(OHD were 20/30 ng/ml. Patients were divided into 2 groups according to the postoperative calcium concentrations corrected for albumin in the blood: Group 1 - patients with postoperative levels of calcium in the blood of 2.0 mmol/l or less; Group 2 - Patients with blood calcium levels above 2.0 mmol/l. Thus, when patients Gravesdisease Group 1 disease duration was significantly higher concentration of 25(OHD and postoperative parathyroid hormone was significantly lower compared to the 2nd group. According to logistic regression analysis, postoperative PTH level below 10 pg/ml was the main predictors of postoperative hypocalcemia ( p < 0,001. Patients with Gravesdisease increasingly requiring the appointment of calcium after the operation, they are demonstrating a significant clinical signs of hypocalcemia than patients with nontoxiс multinodular goiter after thyroidectomy.

  6. Prestimulation with Recombinant Human Thyrotropin (rhTSH) Improves the Long-Term Outcome of Radioiodine Therapy for Multinodular Nontoxic Goiter

    DEFF Research Database (Denmark)

    Fast, Søren; Nielsen, Viveque Egsgaard; Grupe, Peter;

    2012-01-01

    Objective: The objective of the study was to evaluate the long-term outcome of recombinant human TSH (rhTSH)-augmented radioiodine ((131)I) therapy for benign multinodular nontoxic goiter. Patients and Methods: Between 2002 and 2005, 86 patients with a multinodular nontoxic goiter were treated...... scale. Results: In both groups, thyroid volume was further reduced from 1 yr to final FU (71 months). The mean goiter volume reductions obtained at 1 yr and final FU [59.2 ± 2.4% (sem) and 69.7 ± 3.1%, respectively] in the rhTSH group were significantly greater than those obtained in the (131)I......-alone group (43.2 ± 3.7 and 56.2 ± 3.6%, respectively, P = 0.001 and P = 0.006), corresponding to a gain of 24% at final FU. At last FU the mean reduction in compression visual analog scale score was significantly greater in patients receiving rhTSH (P = 0.049). Additional therapy (thyroid surgery or (131)I...

  7. Quality of life in patients with benign nontoxic goiter

    DEFF Research Database (Denmark)

    Cramon, Per; Bonnema, Steen Joop; Bjørner, Jakob;

    2015-01-01

    BACKGROUND: While health-related quality of life (HRQoL) issues often prompt treatment of benign nontoxic goiter (NTG), few clinical studies have systematically assessed HRQoL in patients with this condition. The purpose of the present study was to evaluate thyroid-related and generic HRQo...

  8. Therapy for non-toxic multinodular goiter. Radioiodine therapy as attractive alternative to surgery

    Energy Technology Data Exchange (ETDEWEB)

    Dietlein, M.; Dederichs, B.; Kobe, C.; Theissen, P.; Schmidt, M.; Schicha, H. [Klinik und Poliklinik fuer Nuklearmedizin der Univ. zu Koeln (Germany)

    2006-07-01

    The need for therapy for nodular goiter results from the growth of thyroid nodules over decades and from the possibility of tracheal compression and worsening of respiratory function. Given the high prevalence of non-toxic goiter, the epidemiologically low incidence of clinically apparent thyroid cancer justifies non-surgical strategies. Randomised studies have shown that levothyroxine offers limited therapeutic effects and is inferior to radioiodine therapy regarding goiter shrinkage. When indication for a definitive therapy is given, the choice between resection and radioiodine therapy should consider volume of goiter, severity of clinical symptoms, thyroid uptake, patient's age, co-morbidity, previous resection of goiter, patient's profession and patient's wish. Even in large goiters between 100 and 300 ml radioiodine therapy showed consistent results with goiter size reduction from 35-40% one year and 40-60% two years after radioiodine therapy. Thyroid hormones to prevent recurrence of goiter are not necessary. Recurrent goiters were seldom observed after radioiodine therapy and resulted from initially very large goiters or uptake in dominante nodules or from low {sup 131}I activities. Recombinant human TSH (rhTSH) offers the opportunity to enhance the effect of radioiodine therapy. Observational studies have shown that rhTSH increases low {sup 131}I uptake in case of high alimentary iodine-supply by the factor 4, causes a more homogenous {sup 131}I distribution within the goiter and improves goiter reduction. A phase I study for dose finding is running in the USA. Conclusion: radioiodine therapy for shrinkage of large non-toxic goiter should not be restricted to elderly patients, or to patients with co-morbidity or high operative risk, but is an attractive alternative to surgery in patients with special professions (singer, teacher, speaker) or with the wish for a non-invasive treatment modality. (orig.)

  9. Radioiodine therapy in non-toxic multinodular goitre. The possibility of effect-amplification with recombinant human TSH (rhTSH)

    Energy Technology Data Exchange (ETDEWEB)

    Bonnema, Steen J.; Nielsen, Viveque E.; Hegedues, Laszlo [Odense Univ. Hospital (Denmark). Dept. of Endocrinology and Metabolism

    2006-12-15

    There is no consensus regarding the optimum treatment of benign non-toxic goitre. L-thyroxine suppressive therapy is widely used, but there is poor evidence of its efficacy, and it may have serious adverse effects on health. Surgery is first choice in large goitres or if malignancy is suspected. {sup 131}I therapy results in a one-year goitre reduction of around 40% in multinodular goitres, usually with a high degree of patient satisfaction and improvement of the inspiratory capacity. The effect is attenuated with increasing goitre size. The risk of hypothyroidism is 22-58% within 5-8 years. A sufficient thyroid {sup 131}I uptake is mandatory for {sup 131}I therapy to be feasible and pre-stimulation with recombinant human TSH (rhTSH) increases this considerably. This leads to an increased absorbed thyroid dose by approx.75%, mainly in those patients with the lowest thyroid {sup 131}I uptake, and a more homogeneous intrathyroidal isotope distribution. Pre-stimulation with even a small dose of rhTSH seems to allow a reduction of the {sup 131}I activity while still achieving a mean goitre reduction of approximately 40% within a year. A significantly lower extrathyroidal radiation is achieved by this approach. With an unchanged {sup 131}I activity, rhTSH pre-stimulation improves the goitre reduction by 30-50%. However, this is at the expense of a higher rate of hypothyroidism, cervical pain and transient thyrotoxicosis. Of particular concern is the observation made in healthy persons, that rhTSH results in a transient average thyroid volume increase of 35%. A similar goitre swelling may cause problems in susceptible patients during rhTSH-augmented {sup 131}I therapy. Thus, this concept still needs a closer evaluation before routine use.

  10. Recombinant human TSH and radioactive iodine therapy in the management of benign multinodular goiter.

    Science.gov (United States)

    Graf, Hans

    2015-02-01

    Multinodular goiter (MNG) is a very common thyroid disorder determined by diverse goitrogenic factors, the most important one being iodine deficiency. The clinical presentation of a patient with MNG varies from a completely asymptomatic goiter to a life-threatening disease due to upper airway compression. Patients can develop underlying subclinical or overt hyperthyroidism due to autonomously hyperfunctioning nodules. In the absence of clinical, ultrasonographic, or cytological findings suggestive of malignancy, the best therapeutic approach for a patient with MNG will depend on the size and location of the goiter, the presence and severity of compressive symptoms, and the presence or absence of thyrotoxicosis. There is still no consensus regarding the treatment of atoxic MNGs. Hence, its optimal management remains controversial; possible therapies include levothyroxine (lT4), surgery, and radioactive iodine ((131)I). Suppressive treatment with lT4 is discouraged due to the development of sub-clinical or overt hyperthyroidism and to its low efficacy when compared with surgery or (131)I. Total thyroidectomy is effective; however, it is associated with the risk of surgical complications and is often refused by the patient. (131)I therapy is an alternative to thyroid surgery to reduce the size of benign MNGs. Based on the ability of recombinant human TSH (rhTSH) to more than double thyroid (131)I uptake, this compound has been evaluated as an adjuvant to (131)I in the treatment of MNG. Very small doses of rhTSH have been used in patients with MNG and few safety concerns have been observed, but the ideal dose, both effective and safe, is yet to be defined. PMID:25189867

  11. A novel DICER1 mutation identified in a female with ovarian Sertoli-Leydig cell tumor and multinodular goiter

    DEFF Research Database (Denmark)

    Rossing, Maria; Gerdes, Anne-Marie; Juul, Anders;

    2014-01-01

    Sertoli-Leydig cell tumor and a multinodular goiter. A multinodular goiter was diagnosed in the siblings during childhood. Clinicians should be aware of a potential germ-line DICER1 mutation when evaluating multinodular goiter in young patients with or without a family history of thyroid diseases.......INTRODUCTION: Germ-line mutations in the micro-ribonucleic acid processing gene DICER1 have been shown to predispose to a subset of benign tumors susceptible to malignant transformation, including ovarian Sertoli-Leydig cell tumor, nontoxic multinodular goiter, multilocular cystic nephroma and...... of tumorigenesis. Many carriers of germ-line DICER1 mutations remain unaffected, but development of tumors within carriers is associated with varying prognoses. CASE PRESENTATION: Despite the Dcr-1 homolog syndrome phenotype being incompletely defined, a DICER1 mutation was suspected when a girl...

  12. A novel DICER1 mutation identified in a female with ovarian Sertoli-Leydig cell tumor and multinodular goiter: a case report

    OpenAIRE

    Rossing, Maria; Gerdes, Anne-Marie; Juul, Anders; Rechnitzer, Catherine; Rudnicki, Martin; Nielsen, Finn C; vO Hansen, Thomas

    2014-01-01

    Introduction Germ-line mutations in the micro-ribonucleic acid processing gene DICER1 have been shown to predispose to a subset of benign tumors susceptible to malignant transformation, including ovarian Sertoli-Leydig cell tumor, nontoxic multinodular goiter, multilocular cystic nephroma and pleuropulmonary blastoma, which can occur in children and young adults. This may be due to reduced Dcr-1 homolog expression in carriers of germline mutations, which causes impairment of micro-ribonucleic...

  13. Modified-Release Recombinant Human TSH (MRrhTSH) Augments the Effect of 131I Therapy in Benign Multinodular Goiter: Results from a Multicenter International, Randomized, Placebo-Controlled Study

    DEFF Research Database (Denmark)

    Graf, H; Fast, S; Pacini, F;

    2011-01-01

    Background: Recombinant human TSH (rhTSH) can be used to enhance (131)I therapy for shrinkage of multinodular goiter (MG). Objective, Design, and Setting: The objective of the study was to compare the efficacy and safety of 0.01 and 0.03 mg modified-release (MR) rhTSH as an adjuvant to (131)I the...

  14. Long-term efficacy of modified-release recombinant human TSH (MRrhTSH) augmented radioiodine (131I) therapy for benign multinodular goiter. Results from a multicenter international, randomized, placebo-controlled dose-selection study

    DEFF Research Database (Denmark)

    Fast, Søren; Hegedus, Laszlo; Pacini, Furio;

    2014-01-01

    Background: Enhanced reduction of multinodular goiter (MNG) can be achieved by stimulation with recombinant human thyrotropin (rhTSH) before radioiodine (131I) therapy. The objective was to compare the long-term efficacy and safety of two low doses of modified release rhTSH (MRrhTSH) in combinati...

  15. Iodine-131 therapy for the treatment of multinodular goitre

    Energy Technology Data Exchange (ETDEWEB)

    Akerman, R.L.; Howarth, D.M. [John Hunter Hospital, Newcastle, NSW, (Australia). Department of Nuclear Medicine

    1997-09-01

    Full text: The purpose of this study was to investigate the effectiveness of {sup 131}l therapy for toxic and non-toxic multinodular goitre (MNG)in the patients treated with the standard dose of 4 x 555 MBq (total 2.2 Bq) and therefore give some indication as to the adequacy of this therapy. This was a retrospective study using information from patients` notes. All patients with large multinodular goitres who had radioiodine therapy for treatment of MNG since 1991 were selected. Data obtained included age, gender, pre, peri and post therapy symptoms and serial biochemical thyroid function results. Each patient was followed for a minimum of six months. The subjects were 35 patients (32 female, three male) with an age range of 37 - 87 years. 26 patients had non-toxic MNG, nine patients had toxic MNG, 24 patients had retrosternal or obstructive symptoms and five patients had had previous thyroid therapy. The patients with retrosternal or obstructive symptoms experienced a reduction in those symptoms. 8.6 per cent of the patients experienced no change at all in symptoms. 2.8 per cent of the patients experienced non-transient side effects (sore throat). 32.8 per cent of the patients experienced transient hyperthyroidism during {sup 131}I therapy. In the toxic group, 77.8 per cent became euthyroid. 11.1 per cent became hypothyroid and 11.1 per cent remained hyperthyroid and required additional treatment. In the non-toxic group, 42.3 per cent became hypothyroid and 57.7 per cent remained euthyroid. The overall incidence of hypothyoidism was 34.4 per cent. The results of this study suggests {sup 131}l therapy in the form of 4 x 555 MBq oral doses (one dose per month for four months) is effective, efficient, relatively risk-free, easy and generally well-tolerated treatment for toxic and non-toxic multinodular goitre.

  16. [Total thyroidectomy treatment of bening multinodular goiter].

    Science.gov (United States)

    Palas, César; Álvarez, Facundo; Ferreira, Gastón; Gramática, Luis h

    2014-01-01

    Introducción. El tratamiento del bocio multinodular beningo (BMNB) es motivo de continuo debate en las últimas décadas pese a la evidencia de que la tiroidectomía total (TT) está relacionada a una reducción significativa en la recurrencia de la enfermedad y a una mínima morbilidad en manos entrenadas. Objetivo. Determinar la recurrencia del BMNB al cabo de 10 años en 100 pacientes tratados con TT y evaluar las complicaciones relacionadas a la técnica.Diseño. Prospectivo no randomizado.Material y métodos. Desde marzo del 1999 a marzo del 2001, cien pacientes, 95 del sexo femenino, con un promedio de edad de 42,4 años (rango: 23-67), fueron sometidos a una TT por padecer un BMNB, el cual fue confirmado por la ecografía cervical, la que además sirvió de guía para realizar la punción aspiración con aguja fina (PAAF). En todos los casos se realizó un laringoscopía inderecta pre y post postquirúrgica. Resultados. El tiempo operatorio promedio fue de 49 minutos (rango: 35-58). Registramos una parálisis recurrencial (1%) y cinco hipoparatiroidismos (5%), ambos transitorios y ningún caso definitivo. Todos los pacientes fueron dados de alta antes de las 24 horas de la cirugía. No objetivamos ninguna recurrencia del BMNB en un período de seguimiento de más de 10 años.Conclusión. La TT es el tratamiento elección del BMNB, por ser un procedimiento eficaz, seguro, con mínimas tasas de complicaciones y por evitar o reducir significativamente la recurrencia de esta enfermedad.

  17. Thyrotropinoma and multinodular goiter: A diagnostic challenge for hyperthyroidism

    Directory of Open Access Journals (Sweden)

    Duygu Yazgan Aksoy

    2013-01-01

    Full Text Available Thyroid disorders are frequently encountered. The diagnosis is straightforward unless clinical or laboratory findings are inconclusive and/or perplexing. Hyperthyroidism due to a thyrotropin-secreting pituitary adenoma rarely occurs and symptoms due to thyroid hormone excess are subtle. The presentation of the disease becomes unusual when co-secretion of other hormones with thyrotropin or concomitant thyroid parenchymal pathology exist. We present the case of a 63-year-old female patient with thyrotropinoma co-secreting growth hormone and multinodular goiter. She developed hyperthyroidism first due to thyrotropinoma and later due to a toxic nodule. Herein, we discuss the diagnostic and therapeutic challenges of hyperthyroidism with atypical presentation.

  18. Solitary intrathyroidal metastasis of renal clear cell carcinoma in a toxic substernal multinodular goiter

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    Dionigi Gianlorenzo

    2008-10-01

    Full Text Available Abstract Introduction Thyroid gland is a rare site of clinically detectable tumor metastasis. Case report A 71-year-old woman was referred to our department for an evaluation of toxic multinodular substernal goiter. She had a history of renal clear cell carcinoma of the left kidney, which had been resected 2 years previously. US confirmed the multinodular goiter. Total thyroidectomy with neuromonitoring was performed on March 2008. A histological examination revealed a solitary metastasis of a clear cell renal cancer in a diffuse multinodular goiter. No distant metastases are detected. Conclusion Although uncommon, it is important for the endocrine surgeon and endocrine oncologist to be able to recognize and differentiate intrathyroid metastases from more primary common thyroid neoplasms. The diagnosis can be suspected if the patient has a thyroid tumor and a past history of extrathyroid cancer. These tumors, on the whole, tend to behave more aggressively and, in most cases, the use of multimodality therapy is recommended.

  19. Massive Multinodular Head and Neck Recurrence of Parotid Gland Pleomorphic Adenoma: A Case Report

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    Pierre Philouze

    2014-01-01

    Full Text Available Introduction. The optimal initial management of parotid pleomorphic adenomas reduces the risk of recurrence and malignant transformation. Surgery of recurrence can be difficult in multinodular disseminated forms. Case Report. A 67-years-old patient was referred for management of a large multifocal recurrence of a pleomorphic adenoma operated on 23 years ago. The clinical and radiological assessment found parapharyngeal, infratemporal, and prestyloid invasion, with nodules in the sternocleidomastoid muscle. Excision by transmandibular approach was performed. The pathologist found a multinodular recurrent pleomorphic adenoma without criteria of malignancy. Postoperative radiotherapy was performed. Discussion. Multinodular forms and incomplete resections are the most important factors that are thought to predispose to recurrence. A precise analysis of the extension by preoperative MRI is essential. Adjuvant radiotherapy can be given in these recurrent multifocal forms.

  20. Neutropenia Due to Very Long Time Propylthiouracil Usage in Toxic Multinodular Goiter

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    Ahmet Kaya

    2016-03-01

    Full Text Available Thyrotoxicosis affects hematopoiesis in several ways and thioamides may cause myelosuppression. We report a case of febrile neutropenia in a patient with hyperthyroidism who was using propylthiouracil for nearly 20 years for the treatment of toxic multinodular goitre. After surgery, the patient was euthyroid and neutropenia resolved. Postoperative pathology was evaluated as micropapillary thyroid carcinoma.

  1. Cardiac and metabolic effects in patients who present with a multinodular goitre

    NARCIS (Netherlands)

    A. Berghout (Arie); J. van de Wetering (Jacqueline); A.P.J. Klootwijk (Peter)

    2003-01-01

    textabstractTwenty-six consecutive patients who presented with clinically euthyroid multinodular goitre were studied for an overnight fasting serum lipid profile and 24 h Holter monitoring. Mean serum TSH was 0.6 +/- 0.4 vs 2.4 +/- 1.3 mU/l (p < 0.0001) and mean TT3 2.4 +/- 0.4 vs

  2. Recurrent Benign Salivary Gland Neoplasms.

    Science.gov (United States)

    Witt, Robert Lee; Nicolai, Piero

    2016-01-01

    The most important causes of recurrence of benign pleomorphic adenoma are enucleation with intraoperative spillage and incomplete tumor excision in association with characteristic histologic findings for the lesion (incomplete pseudocapsule and the presence of pseudopodia). Most recurrent pleomorphic adenomas (RPAs) are multinodular. MRI is the imaging method of choice for their assessment. Nerve integrity monitoring may reduce morbidity of RPA surgery. Although treatment of RPA must be individualized, total parotidectomy is generally recommended given the multicentricity of the lesions. However, surgery alone may be inadequate for controlling RPA over the long term. There is growing evidence from retrospective series that postoperative radiotherapy results in significantly better local control. A high percentage of RPAs are incurable. All patients should therefore be informed about the possibility of needing multiple treatment procedures, with possible impairment of facial nerve function, and radiation therapy for RPA. Reappearance of Warthin tumor is a metachronous occurrence of a new focus or residual incomplete excision of all primary multicentric foci of Warthin tumor. Selected cases can be observed. Conservative surgical management can include partial superficial parotidectomy or extracapsular dissection. Not uncommonly, other major and minor salivary gland neoplasms, including myoepithelioma, basal cell adenoma, oncocytoma, canalicular adenoma, cystadenoma, and ductal papilloma, follow an indolent course after surgical resection, with rare cases of recurrence.

  3. Non-Toxic HAN Monopropellant Propulsion Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Non-toxic monopropellants have been developed that provide better performance than toxic hydrazine. Formulations based on hydroxylammonium nitrate (HAN) have...

  4. Combination therapy of temporary tracheal stenting and radiofrequency ablation for multinodular thyroid goiter with airway compression

    International Nuclear Information System (INIS)

    We report a case of multinodular thyroid goiter in an 80-year-old man who successfully underwent tracheal stent placement for respiratory distress caused by the thyroid goiter and following two radiofrequency (RF) ablation sessions performed for thyroid volume reduction. This sequential treatment allowed elective stent removals four weeks after the second RF ablation session because the thyroid volume had been progressively reduced. Combination therapy of temporary airway stenting and RF ablation for the treatment of thyroid goiter has two advantages, i.e., immediate reliefs of dyspnea with airway stenting and reductions of the thyroid volume with RF ablation, and thus, allowing symptom reliefs even after the stent removals.

  5. Combination therapy of temporary tracheal stenting and radiofrequency ablation for multinodular thyroid goiter with airway compression

    Energy Technology Data Exchange (ETDEWEB)

    Shin, Ji Hoon; Beak, Jung Hwan; Oh, Yeon Mok; Ha, Eun Ju; Lee, Jeong Hyun [University of Ulsan College of Medicine, Asan Medical Center, Seoul (Korea, Republic of)

    2013-10-15

    We report a case of multinodular thyroid goiter in an 80-year-old man who successfully underwent tracheal stent placement for respiratory distress caused by the thyroid goiter and following two radiofrequency (RF) ablation sessions performed for thyroid volume reduction. This sequential treatment allowed elective stent removals four weeks after the second RF ablation session because the thyroid volume had been progressively reduced. Combination therapy of temporary airway stenting and RF ablation for the treatment of thyroid goiter has two advantages, i.e., immediate reliefs of dyspnea with airway stenting and reductions of the thyroid volume with RF ablation, and thus, allowing symptom reliefs even after the stent removals.

  6. Total thyroidectomy for multinodular goiter - is it really an option in endemic region?

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    Kalin Vidinov

    2013-11-01

    Full Text Available Bilateral multinodular goiter is the most common indications for surgery in endemic iodine-deficiency regions such as Bulgaria. Total thyroidectomy is currently the preferred treatment for thyroid cancer, for multinodular goiter. However many surgeons and endocrinologist still choose not to perform or recommend total thyroidectomy or lobectomy for bilateral or unilateral disease. We sought to assess whether the results support the hypothesis that total thyroidectomy is safe and can be considered as the optimal surgical approach for treating BMG in endemic region such as Bulgaria. A total of 500 patients were included in this study. They underwent thyroid operation between 2004 and 2009. We excluded patients with thyroid cancer or suspicion of thyroid malignancy. We evaluated indications for total thyroidectomy, complication rates, local recurrence rate and long-term outcome after total thyroidectomy. All patients had bilateral goiter diagnosed with ultrasound (n = 500. The incidence of permanent bilateral recurrent laryngeal nerve palsy was 0% and that of permanent unilateral recurrent laryngeal nerve palsy and permanent hypocalcaemia occurred was 0.8 - 1.2 %. Hemorrhage requiring repeat surgery occurred in 0.4-2 % of patients. There was no wound infection, and postoperative mortality was 0%. Total thyroidectomy is safe and is associated with a low incidence of disabilities. Ttotal thyroidectomy has the advantages of immediate and permanent cure and no recurrences.

  7. Benign positional vertigo

    Science.gov (United States)

    Vertigo - positional; Benign paroxysmal positional vertigo; BPPV: dizziness- positional ... Benign positional vertigo is also called benign paroxysmal positional vertigo (BPPV). It is caused by a problem in the inner ear. ...

  8. Diffuse infiltration of Aspergillus hyphae in the thyroid gland with multinodular goiter

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    Havva Erdem

    2011-01-01

    Full Text Available A 35-year-old woman presented with a thyroid mass, weakness and shortness of breath of 3 years duration. On physical examination, she had a diffusely enlarged thyroid gland with multiple nodules. There were no signs to suggest immune suppression. The patient farmed and raised livestock. Biochemical tests and hemogram were normal. She underwent surgery, and a histological examination of the surgical specimen revealed nodular hyperplasia. Microscopically, silver methenamine (PASM stain-positive hyphae that divided into branches at 45° and conidia were detected beside the thyroid capsule, with conidia in the cystic nodule. Moreover, ischemic changes of the thyroid tissue were observed closer to the capsule. We report a case of Aspergillosis of the thyroid of a patient who underwent surgery for a multinodular goiter.

  9. Surgical treatment of benign nodular goiter; report of 72 patients

    Directory of Open Access Journals (Sweden)

    Ediz YORGANCILAR

    2009-03-01

    Full Text Available Surgical resection is usually prefered for the treatment of benign nodular goiter. But the extention of thyroidectomy in the surgical management of benign nodular goiter still remains controversial. Seventytwo patients underwent thyroid surgery between April 2002- July2007 in Kızıltepe State Hospital Otorhinolaryngology Service. Of the patients 63 were women (%87.5, 9 were man (%12.5. The range of age was between 15-62 years and mean age was 36,5. Thirtynine patients had unilateral total lobectomy+ istmusectomy (%54.2, 11 patients had unilateral lobectomy+ isthmusectomy+contralateral subtotal lobectomy (Dunhill Procedure (%15.3, 20 patients had nearly total thyroidectomy (%27.8, 2 patients had total thyroidectomy (% 2.7. Three patients had seroma (%4.1, 2 patients had hemorrhage requiring operative hemostasis (%2.7, 1 patient had suture reaction(%1.3. Patients have not had permanent or temporary nervus laryngeus recurrens injury, hypoparathyroidism and infection.As a result more extent surgical resections must be preferred by the surgeon for the treatment of benign nodular goiter. The preferable surgical treatment of solitary nodules is lobectomy+isthmusectomy. The multinodular goiter must be treated with unilateral lobectomy+ isthmusectomy+contralateral subtotal lobectomy (Dunhill procedure when the remnant thyroid tissue is normal; otherwise nearly total or total thyroidectomy is preferable.

  10. Preoperative predictors of short-term survival after hepatectomy for multinodular hepatocellular carcinoma

    Institute of Scientific and Technical Information of China (English)

    Wen-Chao Zhao; Hai-Bin Zhang; Ning Yang; Yong Fu; Wei Qian; Ben-Dong Chen; Lu-Feng Fan

    2012-01-01

    AIM:To investigate preoperative factors associated with poor short-term outcome after resection for multinodular hepatocellular carcinoma (HCC) and to assess the contraindication of patients for surgery.METHODS:We retrospectively analyzed 162 multinodular HCC patients with Child-Pugh A liver function who underwent surgical resection.The prognostic significance of preoperative factors was investigated by univariate analysis using the log-rank test and by multivariate analysis using the Cox proportional hazards model.Each independent risk factor was then assigned points to construct a scoring model to evaluate the indication for surgical intervention.A receiver operating characteristics (ROC) curve was constructed to assess the predictive ability of this system.RESULTS:The median overall survival was 38.3 mo (range:3-80 mo),while the median disease-free survival was 18.6 mo (range:1-79 mo).The 1-year mortality was 14%.Independent prognostic risk factors of 1-year death included prealbumin < 170 mg/L [hazard ratio (HR):5.531,P < 0.001],alkaline phosphatase >129 U/L (HR:3.252,P =0.005),α fetoprotein > 20 μg/L (HR:7.477,P =0.011),total tumor size > 8 cm (HR:10.543; P < 0.001),platelet count < 100 × 109/L(HR:9.937,P < 0.001),and γ-glutamyl transpeptidase > 64 U/L (HR:3.791,P < 0.001).The scoring model had a strong ability to predict 1-year survival (area under ROC:0.925,P < 0.001).Patients with a score ≥ 5 had significantly poorer short-term outcome than those with a score < 5 (1-year mortality:62% vs 5%,P < 0.001; 1-year recurrence rate:86% vs 33%,P <0.001).Patients with score ≥ 5 had greater possibility of microvascular invasion (P < 0.001),poor tumor differentiation (P =0.003),liver cirrhosis with small nodules (P < 0.001),and intraoperative blood transfusion (P =0.010).CONCLUSION:A composite preoperative scoring model can be used as an indication of prognosis of HCC patients after surgical resection.Resection should

  11. Benign Multicystic Peritoneal Mesothelioma

    Science.gov (United States)

    ... Center (GARD) Print friendly version Benign multicystic peritoneal mesothelioma Table of Contents Overview Treatment Prognosis Living With ... Names for this Disease BMPM Benign cystic peritoneal mesothelioma Multilocular peritoneal inclusion cysts Multilocular peritoneal cysts About ...

  12. Mesothelioma - benign-fibrous

    Science.gov (United States)

    Mesothelioma - benign; Mesothelioma - fibrous; Pleural fibroma; Solitary fibrous tumor of the pleura ... other reasons. Other tests that may show benign mesothelioma include: CT scan of the chest Open lung ...

  13. Multinodular and vacuolating neuronal tumor affecting amygdala and hippocampus: A quasi-tumor?

    Science.gov (United States)

    Yamaguchi, Maki; Komori, Takashi; Nakata, Yasuhiro; Yagishita, Akira; Morino, Michiharu; Isozaki, Eiji

    2016-01-01

    Multinodular and vacuolating neuronal tumors (MVNT) have been referred to as distinctive neuronal tumors whose characteristic features include multiple nodules localized in the subcortical white matter. MVNT are composed of vacuolating dysplastic neurons reactive to HuC/HuD. A significant overexpression of alpha-internexin (INA) limited to the stroma of nodules was reported in one tumor. Since genetic analyses have failed to demonstrate any consistent alterations, the nosological position as well as the nature of MVNT, namely, neoplastic or dysplastic, remains unclear. We herein present another example of MVNT involving the amygdala and anterior hippocampus in a 41-year-old man. In addition to the nodular lesions described earlier, we found INA-positive ribbon-like lesions that replaced neuropil and extended along the hippocampal gray matter. We also identified dysplastic neurons infiltrating into the CA4 hilus of the hippocampus. Intense INA expression was present in the stroma as well as the cytoplasmic membrane of dysplastic neurons and their processes. While the invasiveness suggested a neoplasm, a relatively restrictive, either nodular or ribbon-like growth pattern with INA-positive abnormal neuropil suggested a hamartoma. Such quasi-tumors should be accommodated in the World Health Organization classification of tumors of the central nervous system, as are dysembryoplastic neuroepithelial tumor and Lhermitte-Duclos disease. PMID:26644357

  14. Outpatient management of patients with large multinodular goitres treated with fractionated radioiodine

    Energy Technology Data Exchange (ETDEWEB)

    Howarth, D.M.; Thomas, P.A.; Allen, L.W.; Akerman, R.; Lan, L. [Department of Nuclear Medicine, John Hunter Hospital, Newcastle, NSW (Australia); Epstein, M.T. [Department of Endocrinology, John Hunter Hospital, Newcastle, NSW (Australia)

    1997-12-01

    The efficacy of fractionated out-patient radioiodine therapy in 38 patients with compressive symptoms due to long-standing large multinodular goitres was assessed. The diagnosis was established by clinical assessment in addition to technetium-99m pertechnetate thyroid scan or computed tomography scan of the thyroid and mediastinum. Oral iodine-131 therapy was administered as a 2.22 GBq (60 mCi) cumulative dose over 4 months (555 MBq per month). All patients were monitored with serum thyroid-stimulating hormone and free thyroxine ({+-} free tri-iodothyronine) assays before the treatment and after each dose fraction. Clinical and biochemical follow-up was performed on all patients and ranged from 6 to 45 months after therapy. The patients consisted of 35 female and three male patients with a median age of 59 years (range 37-87 years). Prior to treatment 20 patients were biochemically hyperthyroid and 18 were euthyroid. Overall, 71% of patients reported a subjective improvement in compressive symptoms and 29% reported no change. Clinically assessed reduction in goitre size occurred in 92% of patients while there was no change in 8%. At 3 months of follow-up, 31% of patients had become hypothyroid and at 18 months 66% were hypothyroid. Seven hyperthyroid patients (35%) became euthyroid and 13 hyperthyroid patients (65%) became hypothyroid. Three patients who became hypothyroid experienced neck soreness (transient in one patient, persistent in two patients). There were no differences in outcome between patients who were hyperthyroid and those who were euthyroid prior to treatment. Fractionated out-patient radioiodine therapy showed excellent short- and medium-term safety, was very well tolerated and offered a satisfactory alternative treatment to surgery. (orig.) With 1 fig., 3 tabs., 23 refs.

  15. Mutational analysis of Peroxiredoxin IV: exclusion of a positional candidate for multinodular goitre

    Directory of Open Access Journals (Sweden)

    Bonifazi Emanuela

    2002-07-01

    Full Text Available Abstract Background Multinodular goitre (MNG is a common disorder characterised by an enlargement of the thyroid, occurring as a compensatory response to hormonogenesis impairment. The incidence of MNG is dependent on sex (female:male ratio 5:1 and several reports have documented a genetic basis for the disease. Last year we mapped a MNG locus to chromosome Xp22 in a region containing the peroxiredoxin IV (Prx-IV gene. Since Prx-IV is involved in the removal of H2O2 in thyroid cells, we hypothesize that mutations in Prx-IV gene are involved in pathogenesis of MNG. Methods Four individuals (2 affected, 2 unrelated unaffected were sequenced using automated methods. All individuals were originated from the original three-generation Italian family described in previous studies. A Southern blot analysis using a Prx-IV full-length cDNA as a probe was performed in order to exclude genomic rearrangements and/or intronic mutations. In addition a RT-PCR of PRX-IV was performed in order to investigate expression alterations. Results No causative mutations were found. Two adjacent nucleotide substitutions were detected within introns 1 and 4. These changes were also detected in unaffected individuals, suggesting that they were innocuous polymorphisms. No gross genomic rearrangements and/or restriction fragment alterations were observed on Southern analysis. Finally, using RT-PCR from tissue-specific RNA, no differences of PRX-IV expression-levels were detected between affected and unaffected samples. Conclusions Based on sequence and genomic analysis, Prx-IV is very unlikely to be the MNG2 gene.

  16. Prognostic parameters in benign astrocytomas

    DEFF Research Database (Denmark)

    Westergaard, L; Gjerris, F; Klinken, L

    1993-01-01

    To elucidate the prognosis of different types of benign astrocytomas and to ascertain whether patients with partially resected benign astrocytomas, or any subtype of these, would benefit from postoperative radiotherapy, we studied retrospectively material comprising 300 patients with benign...

  17. Benign prostate hyperplasia (BPH) - resources

    Science.gov (United States)

    Resources - benign prostatic hyperplasia (BPH); Prostate enlargement resources; BPH resources ... The following organizations provide information on benign prostatic hyperplasia ( prostate enlargement ... Urology Care Foundation -- www. ...

  18. Benign positional vertigo - aftercare

    Science.gov (United States)

    Vertigo - positional - aftercare; Benign paroxysmal positional vertigo - aftercare; BPPV - aftercare ... Your doctor may have treated your vertigo with the Epley maneuver. ... ear problem that causes BPPV. It usually works quickly. For ...

  19. Intrathoracic toxic thyroid nodule causing hyperthyroidism with a multinodular normal functional cervical thyroid gland.

    Science.gov (United States)

    Serim, Burcu Dirlik; Korkmaz, Ulku; Can, Unal; Altun, Gulay Durmus

    2016-01-01

    Radionuclide scintigraphy with I-131 and Tc-99m pertechnetate ((99)mTc04) has been widely used in detecting toxic nodules. Intrathoracic goiter usually presents as an anterior mediastinal mass. Mostly the connection between intrathoracic mass and the cervical thyroid gland is clearly and easily identified occurring as a result of inferior extension of thyroid tissue in the neck, which is called as secondary intrathoracic goiter. Completely separated, aberrant or in other words primary intrathoracic goiters arise as a result of abnormal embryologic migration of ectopic thyroid closely associated with aortic sac and descend into the mediastinum. Intrathoracic goiters are generally nontoxic nodules existing with mass effect without causing hyperthyroidism. However, mostly reported cases had enlarged thyroid glands in the neck. This report demonstrates the usefulness of I-131 and (99)mTc04 scintigraphy for detecting intrathoracic goiter causing hyperthyroidism with a normal functioned cervical thyroid gland.

  20. Intrathoracic toxic thyroid nodule causing hyperthyroidism with a multinodular normal functional cervical thyroid gland.

    Science.gov (United States)

    Serim, Burcu Dirlik; Korkmaz, Ulku; Can, Unal; Altun, Gulay Durmus

    2016-01-01

    Radionuclide scintigraphy with I-131 and Tc-99m pertechnetate ((99)mTc04) has been widely used in detecting toxic nodules. Intrathoracic goiter usually presents as an anterior mediastinal mass. Mostly the connection between intrathoracic mass and the cervical thyroid gland is clearly and easily identified occurring as a result of inferior extension of thyroid tissue in the neck, which is called as secondary intrathoracic goiter. Completely separated, aberrant or in other words primary intrathoracic goiters arise as a result of abnormal embryologic migration of ectopic thyroid closely associated with aortic sac and descend into the mediastinum. Intrathoracic goiters are generally nontoxic nodules existing with mass effect without causing hyperthyroidism. However, mostly reported cases had enlarged thyroid glands in the neck. This report demonstrates the usefulness of I-131 and (99)mTc04 scintigraphy for detecting intrathoracic goiter causing hyperthyroidism with a normal functioned cervical thyroid gland. PMID:27385899

  1. 100-lbf Non-Toxic Storable Liquid Propulsion Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NASA's Road Maps for both Launch and In Space Propulsion call for the development of non-toxic, monopropellant reaction control systems to replace current...

  2. Non-Toxic Ionic Liquid Fuels for Exploration Applications Project

    Data.gov (United States)

    National Aeronautics and Space Administration — ORBITEC proposes to develop and test new, non-toxic ionic liquid fuels for propulsion applications. Vintage propulsion systems frequently use highly toxic...

  3. Miniature Nontoxic Nitrous Oxide-Propane (MINNOP) Propulsion Project

    Data.gov (United States)

    National Aeronautics and Space Administration — ORBITEC proposes to develop the Miniature Nontoxic Nitrous Oxide-Propane (MINNOP) propulsion system, a small bipropellant propulsion system which we offer as an...

  4. Benign cystic peritoneal mesothelioma

    Directory of Open Access Journals (Sweden)

    Santhosh Shetty

    2014-04-01

    Full Text Available A well-defined but rare entity of Benign Cystic Peritoneal Mesothelioma (BCPM is reported. The aetiology of this neoplasm remains obscure. The presenting features make a precise preoperative diagnosis difficult but information provided by computed tomography and cytology may help. A firm diagnosis can only come from an electronic microscopy or immunohistological examination of the tumour. Diagnostic accuracy and diligent follow up are essential because, although the tumour is considered benign, it does tend towards local recurrence. [Int J Res Med Sci 2014; 2(2.000: 762-764

  5. TOTAL THYROIDECTOMY IN THE TREATMENT OF BENIGN PATHOLOGY

    Directory of Open Access Journals (Sweden)

    M. Saviano

    2010-02-01

    Full Text Available Total thyroidectomy or subtotal thyroidectomy performed in benign pathology of thyroid? Methods: To answer this question we performed a retrospective study on 1103 cases with this pathology: 1082 cases first intervention and 51 cases for relapse pathology. Preoperative diagnosis included: evaluation of the functionality of the thyroid by lab tests, endocrinology exam, ORL exam, anhéstesiologique exam, chest radiograph, CT/MRI neck and thorax, ultrasound, scintigraphy, fine-needle aspiration cytologic diagnoses. Results: Preoperative diagnosis was multinodular goiter (1040 cs. and Basedow (63 cs. and surgical procedures performed were total thyroidectomy in 865 cs and subtotal thyroidectomy in 238 cs. In 92 cs were diving goiter and in 157 patients were diagnosed with large nodular goiter (>100 gr. The surgery made by 123 patients with thyroid carcinoma and 980 patients with benign pathology. Mean postoperative hospital stay was 2.5 days. In the group of 1032 patients without preoperative suspicion of neoplasia (cytology not performed preoperatively or negative hidden carcinomas were 11.7% (121 patients what requiring 11 surgical reinterventions for radicalization of subtotal thyroidectomy. In the group of 71 patients with preoperative suspicion of neoplasia by fine-needle aspiration papillary carcinoma were 2.8%, the rest being benign thyroid pathology. In the postoperative complications, recurrent nerve lesions were encountered in 78 cs (3.76% of 2206 nerves at risk. Bilateral paralysis immediate was encountered in 5 cs (0.4%: 2 cs after total thyroidectomy and 3 cs after subtotal thyroidectomy with permanent bilateral paralysis in all cases. The immediate unilateral paralysis was encountered in 73 patients, (6.6%/3.3% nerves: 40 cs (4.6% after total thyroidectomy and 33 cs (13.8% after subtotal thyroidectomy (p <0.0001. But permanent unilateral paralysis was recorded in 16 patients (1.4%/0.7% nerves: 9 cs (1.0%/0.5% nerves after total

  6. Estudio de la extensión de la tiroidectomía para el tratamiento del bocio multinodular asimétrico

    OpenAIRE

    Prieto Butillé, Maria Rosa

    2013-01-01

    Dado que la mitad de los pacientes que clínicamente presentan nódulo tiroideo simple tiene patología nodular subclínica contralateral y no se ha analizado qué intervención presenta más ventaja se propone este estudio para conocer si se debe realizar hemitiroidectomía o una intervención más extensa a estos pacientes con bocio multinodular asimétrico. Objetivo: Definir el bocio multinodular asimétrico. Comparar la hemitiroidectomía con la hemitiroidectomía más lobectomía contralateral subtot...

  7. Bocio multinodular gigante deformante. Presentación de un caso sin síntomas obstructivos

    Directory of Open Access Journals (Sweden)

    Paul Bogucki

    2014-04-01

    Full Text Available Se presenta el caso de un paciente masculino de 50 años, con una tumoración en la parte anterior de cuello de 25 años de evolución, sin síntomas de compresión. Al examen físico se aprecia una glándula tiroides de gran tamaño que deforma el cuello, de superficie lisa y nodular, de aproximadamente 16x12cm. Los estudios de imágenes y de laboratorio confirmaron el diagnóstico. Se practicó una tiroidectomía total, obteniéndose una glándula de 17x12cm. Se identificaron y preservaron ambos nervios laríngeos recurrentes y las glándulas paratiroides. No hubo complicaciones postoperatorias y el resultado estético fue satisfactorio. En conclusión el bocio es una patología común en las zonas con insuficiente aporte de Yodo, donde tiene una incidencia aproximada de 11%. Las estadísticas obtenidas en nuestro hospital se corresponden con lo publicado en la literatura internacional. La variedad gigante es infrecuente, constituyendo una causa de síntomas compresivos y disconformidad estética, por lo que la cirugía es la indicación terapéutica. Abstract Giant multinodular goiter. A case report with no obstructive symptoms In this report we show a 50 years male patient with a tumor in the anterior part of neck of 25 years of evolution, without symptoms of compression. Physical examination shows a large thyroid gland, which deforms the neck, smooth and nodular, painless to palpation, approximately 16x12cm. Imaging studies and laboratory-confirmed diagnosis of multinodular goiter. A total thyroidectomy was performed, with a gland 17x12cm. Were identified and preserved both recurrent laryngeal nerves and parathyroid glands. There were no postoperative complications and the aesthetic result was satisfactory. In conclusion the goiter is a condition common in areas with insufficient supply of iodine, which has an incidence of approximately 11%. The statistics obtained in our hospital are as published in the international literature to endemic

  8. Benign pneumatosis in children

    Energy Technology Data Exchange (ETDEWEB)

    Fenton, L.Z.; Buonomo, C. [Department of Radiology, Children' s Hospital, Boston, MA (United States)

    2000-11-01

    Background. In pediatrics, pneumatosis intestinalis (PI) is usually due to necrotizing enterocolitis in premature newborns. Beyond infancy, PI is uncommon. ''Benign pneumatosis'' is PI in patients with few or no symptoms that resolves with conservative management. Objective. Our goal was to better characterize benign PI in children. Our investigation focused on identifying underlying risk factors, symptoms at time of diagnosis, management and outcome. Materials and methods. Available medical records and radiographs of children with pneumatosis intestinalis from 1990 to 1998 were reviewed for underlying conditions, symptoms at time of radiographs, management and outcome. Results. Thirty-seven children (mean age 4 years) were included. Thirty-two children had identifiable risk factors. Twenty -five children were immunocompromised by their underlying conditions or therapeutic regimen. Thirty-five children were managed conservatively with resolution of PI. Two patients, however, required surgery and one patient died. Conclusion. Benign pneumatosis does occur in children. The majority have underlying risk factors, most commonly related to immunosuppression. Clinical deterioration is the most useful indicator for surgical intervention. In most patients PI resolves with conservative management. (orig.)

  9. Children's Ability to Recognise Toxic and Non-Toxic Fruits

    Science.gov (United States)

    Fancovicova, Jana; Prokop, Pavol

    2011-01-01

    Children's ability to identify common plants is a necessary prerequisite for learning botany. However, recent work has shown that children lack positive attitudes toward plants and are unable to identify them. We examined children's (aged 10-17) ability to discriminate between common toxic and non-toxic plants and their mature fruits presented in…

  10. Benign cephalic histiocytosis.

    Science.gov (United States)

    Gianotti, F; Caputo, R; Ermacora, E; Gianni, E

    1986-09-01

    Benign cephalic histiocytosis is a self-healing non-X, nonlipid cutaneous histiocytosis of children, characterized by a papular eruption on the head. Mucous membranes and viscera are always spared. In the 13 cases reported herein, the children were otherwise in good general health. The disease appeared during the first three years of life, and spontaneous regression was complete by the age of nine years in the four cases healed to date. The histiocytic infiltrate was localized in the upper and middle dermis and contained no lipids at any stage of evolution. All the histiocytes contained coated vesicles, and 5% to 30% also contained comma-shaped bodies in their cytoplasm.

  11. Crassostrea virginica grazing on toxic and non-toxic diatoms.

    Science.gov (United States)

    Thessen, A E; Soniat, T M; Dortch, Q; Doucette, G J

    2010-01-01

    Despite high abundances of toxic Pseudo-nitzschia spp. over Louisiana oyster beds (Crassostrea virginica; eastern oyster) there have been no documented cases of amnesic shellfish poisoning (ASP) in the state. Two possible explanations are that oysters do not readily feed on long pointed chains of Pseudo-nitzschia cells or they discriminate against toxic cells while grazing. To test these hypotheses, short-term grazing experiments were conducted with several diatoms, including the domoic acid (DA)-producing Pseudo-nitzschia multiseries (1.31+/-0.057 pg DA cell(-1)) and the non-toxic Pseudo-nitzschia delicatissima, Thalassiosira weissflogii, and Ditylum brightwellii. Grazing rates on the small centric species T. weissflogii were significantly higher than on the larger and pointier D. brightwellii and either Pseudo-nitzschia species. Grazing on toxic P. multiseries and non-toxic P. delicatissima was not significantly different. Pseudofeces production was higher and feces production was occasionally lower in oysters fed Pseudo-nitzschia spp. than in oysters fed the other two diatoms. Our data demonstrate lower filtration rates of C. virginica on Pseudo-nitzschia spp. relative to the other diatoms tested and comparable filtration on toxic and non-toxic Pseudo-nitzschia spp. These findings suggest that eastern oysters do not discriminate amongst food types due to DA content. PMID:19835902

  12. AMAP, the alleged non-toxic isomer of acetaminophen, is toxic in rat and human liver

    NARCIS (Netherlands)

    Hadi, Mackenzie; Dragovic, Sanja; van Swelm, Rachel; Herpers, Bram; van de Water, Bob; Russel, Frans G. M.; Commandeur, Jan N. M.; Groothuis, Geny M. M.

    2013-01-01

    N-acetyl-meta-aminophenol (AMAP) is generally considered as a non-toxic regioisomer of the well-known hepatotoxicant acetaminophen (APAP). However, so far, AMAP has only been shown to be non-toxic in mice and hamsters. To investigate whether AMAP could also be used as non-toxic analog of APAP in rat

  13. Inhibition of fungal spore adhesion by zosteric Acid as the basis for a novel, nontoxic crop protection technology.

    Science.gov (United States)

    Stanley, Michele S; Callow, Maureen E; Perry, Ruth; Alberte, Randall S; Smith, Robert; Callow, James A

    2002-04-01

    ABSTRACT To explore the potential for nontoxic crop protection technologies based on the inhibition of fungal spore adhesion, we have tested the effect of synthetic zosteric acid (p-(sulfo-oxy) cinnamic acid), a naturally occurring phenolic acid in eelgrass (Zostera marina L.) plants, on spore adhesion and infection in two pathosystems: rice blast caused by Magnaporthe grisea and bean anthracnose caused by Colletotrichum lindemuthianum. We have shown that zosteric acid inhibits spore adhesion to model and host leaf surfaces and that any attached spores fail to develop appressoria, and consequently do not infect leaf cells. Low concentrations of zosteric acid that are effective in inhibiting adhesion are not toxic to either fungus or to the host. The inhibition of spore adhesion in the rice blast pathogen is fully reversible. On plants, zosteric acid reduced (rice) or delayed (bean) lesion development. These results suggest that there is potential for novel and environmentally benign crop protection technologies based on manipulating adhesion.

  14. Prognostic parameters in benign astrocytomas

    DEFF Research Database (Denmark)

    Westergaard, L; Gjerris, F; Klinken, L

    1993-01-01

    To elucidate the prognosis of different types of benign astrocytomas and to ascertain whether patients with partially resected benign astrocytomas, or any subtype of these, would benefit from postoperative radiotherapy, we studied retrospectively material comprising 300 patients with benign...... astrocytomas treated in the period 1956 to 1991. The pilocytic type of astrocytoma was found to have an outstandingly good prognosis and should be regarded as a distinct nosological entity. For the non-pilocytic supratentorial astrocytomas, a multivariate regression analysis showed that age, tumour site...... time of patients with non-pilocytic supratentorial benign astrocytomas. The study emphasizes the necessity of a prospective combined multicenter analysis of the effect of radiation on benign astrocytomas....

  15. Preparation and characterization of nontoxic magnetic-luminescent nanoprobe

    Institute of Scientific and Technical Information of China (English)

    Yin Nai-Qiang; Liu Ling; Lei Jie-Mei; Liu Yan-Song; Gong Mao-Gang; Wu Yi-Zhi; Zhu Li-Xin; Xu Xiao-Liang

    2012-01-01

    A novel nontoxic,magnetic,and luminescent nanoprobe is prepared by using complex nanoparticles,which are composed of Fe304 nanoparticles and Mn-doped ZnS quantum dots (QDs).The nanocomposite probe can provide visible optical and magnetic resonance images simultaneously.Compared with the previously toxic cadmium and mercury based QDs,the superiority of the Mn-doped ZnS QDs is little virulence.The structure and the properties of the particles are characterized by energy dispersive X-ray analysis spectroscopy,X-ray photoelectron spectroscopy,transmission electron microscopy,photoluminescence spectroscopy,and vibrating sample magnetometer.

  16. Nihilism: a benign denial.

    Science.gov (United States)

    Skandalakis, John E; Mirilas, Petros

    2003-06-01

    Nihilism is the belief that all possible knowledge on a given topic has been amassed and codified. Ranging from benign denial to deliberate attempts at excommunication, nihilism is often encountered in the history of medicine. Eustachius, Columbus, and Sylvius strongly criticized Vesalius and defended the authority of Galen. Riolan fervently rejected Harvey's monumental work on the circulation of blood. Gross stated that no honest and sensible surgeon would ever sanction thyroidectomy. Sandstrom's discovery of the parathyroids was met with silence. Transplantation of parathyroids by Mandl was not appreciated when announced. Aristotle's dictum that the heart cannot withstand serious injury led to Paget's statement that cardiac surgery had reached the limits set by nature, which no new techniques could overcome. The first Billroth I operation was welcomed as, "Hopefully, also the last." Pancreatic surgery was opposed because the organ was of no clinical interest and was impossible for surgeons to reach. Pancreatic transplantation was rejected for many years, despite good results. When Blundell used blood transfusion for postpartum hemorrhage, critics averred that his next exploit would be radical removal of the spleen. Bassini stated that it could be risky to publish more about radical treatment of inguinal hernias. Carcinomas of the lower sigmoid and upper rectum were deemed untreatable because of their inaccessibility. Colostomy during pediatric surgery was rejected many times. Although it is difficult for the human mind to move from a familiar point of view, this propensity should not infect science, thereby impeding advancement.

  17. Effect of 30 mCi radioiodine on multinodular goiter previously treated with recombinant human thyroid-stimulating hormone

    Energy Technology Data Exchange (ETDEWEB)

    Paz-Filho, G.J.; Mesa-Junior, C.O.; Boguszewski, C.L.; Carvalho, G.A.; Graf, H. [Universidade Federal do Parana (UFPR), Curitiba, PR (Brazil). Hospital de Clinicas. Servico de Endocrinologia e Metabologia; Olandoski, M. [Pontificia Univ. Catolica do Parana, Curitiba, PR (Brazil). Nucleo de Bioestatistica; Woellner, L.C. [Centro de Medicina Nuclear, Curitiba, PR (Brazil); Goedert, C.A. [Centro de Tomografia Computadorizada, Curitiba, PR (Brazil)

    2007-12-15

    Recombinant human thyroid-stimulating hormone (rhTSH) enhances {sup 131}I uptake, permitting a decrease in radiation for the treatment of multinodular goiter (MNG). Our objective was to evaluate the safety and efficacy of a single 0.1-mg dose of rhTSH, followed by 30 mCi {sup 131}I, in patients with MNG. Seventeen patients (15 females, 59.0 {+-} 13.1 years), who had never been submitted to {sup 131}I therapy, received a single 0.1-mg injection of rhTSH followed by 30 mCi {sup 131}I on the next day. Mean basal thyroid volume measured by computed tomography was 106.1 {+-} 64.4 mL. {sup 131}I 24-h uptake, TSH, free-T4, T3, thyroglobulin, anti-thyroid antibodies, and thyroid volume were evaluated at regular intervals of 12 months. Mean {sup 131}I 24-h uptake increased from 18.1 {+-} 9.7 to 49.6 {+-} 13.4% (P < 0.001), a median 2.6-fold increase (1.2 to 9.2). Peak hormonal levels were 10.86 {+-} 5.44 mU/L for TSH (a median 15.5-fold increase), 1.80 {+-} 0.48 ng/dL for free-T4, 204.61 {+-} 58.37 ng/dL for T3, and a median of 557.0 ng/mL for thyroglobulin. The adverse effects observed were hyperthyroidism (17.6%), painful thyroiditis (29.4%) and hypothyroidism (52.9%). Thyroid volume was reduced by 34.3 {+-} 14.3% after 6 months (P < 0.001) and by 46.0 {+-} 14.6% after 1 year (P < 0.001). Treatment of MNG with a single 0.1-mg dose of rhTSH, followed by a fixed amount of radioactivity of {sup 131}I, leads to an efficacious decrease in thyroid volume for the majority of the patients, with a moderate incidence of non-serious and readily treatable adverse effects. (author)

  18. Radioiodine plus recombinant human thyrotropin do not cause acute airway compression and are effective in reducing multinodular goiter

    Energy Technology Data Exchange (ETDEWEB)

    Albino, C.C., E-mail: ccalbino@uol.com.b [Instituto de Diabetes e Endocrinologia de Maringa, PR (Brazil); Graf, H.; Paz-Filho, G. [Universidade Federal do Parana (UFPR), Curitiba, PR (Brazil). Hospital das Clinicas. Servico de Endocrinologia e Metabologia; Diehl, L.A. [Universidade Estadual de Londrina (UEL), PR (Brazil); Olandoski, M.; Sabbag, A. [Pontificia Univ. Catolica do Parana (PUCPR), Curitiba, PR (Brazil). Nucleo de Bioestatistica; Buchpiguel, C. [Universidade de Sao Paulo (USP), SP (Brazil). Dept. de Radiologia

    2006-03-15

    Recombinant human thyrotropin (rhTSH) reduces the activity of radioiodine required to treat multinodular goiter (MNG), but acute airway compression can be a life-threatening complication. In this prospective, randomized, double-blind, placebo-controlled study, we assessed the efficacy and safety (including airway compression) of different doses of rhTSH associated with a fixed activity of {sup 131}I for treating MNG. Euthyroid patients with MNG (69.3 +- 62.0 mL, 20 females, 2 males, 64 +- 7 years) received 0.1 mg (group I, N = 8) or 0.01 mg (group II, N = 6) rhTSH or placebo (group III, N = 8), 24 h before 1.11 GBq {sup 131}I. Radioactive iodine uptake was determined at baseline and 24 h after rhTSH and thyroid volume (TV, baseline and 6 and 12 months after treatment) and tracheal cross-sectional area (TCA, baseline and 2, 7, 180, and 360 days after rhTSH) were determined by magnetic resonance; antithyroid antibodies and thyroid hormones were determined at frequent intervals. After 6 months, TV decreased significantly in groups I (28.5 +- 17.6%) and II (21.6 +- 17.8%), but not in group III (2.7 +- 15.3%). After 12 months, TV decreased significantly in groups I (36.7 +- 18.1%) and II (37.4 +- 27.1%), but not in group III (19.0 +- 24.3%). No significant changes in TCA were observed. T3 and free T4 increased transiently during the first month. After 12 months, 7 patients were hypothyroid (N 3 in group I and N = 2 in groups II and III). rhTSH plus a 1.11-GBq fixed {sup 131}I activity did not cause acute or chronic changes in TCA. After 6 and 12 months, TV reduction was more pronounced among patients treated with rhTSH plus {sup 131}I (author)

  19. Radiation treatment of benign diseases

    International Nuclear Information System (INIS)

    The report deals with an estimation of the volume of radiation treatment of benign diseases in Norway and gives a survey of the subjective opinion of patients regarding the result of the treatment. Reported subjective recovery after radiation treatment seems to be at the same level as recovery without treatment. For an indication of the objective effect of radiation treatment of benign diseases, the subjective effect of this treatment has to be compared with objective findings

  20. Radical pancreaticoduodenectomy for benign disease.

    LENUS (Irish Health Repository)

    Kavanagh, D O

    2008-01-01

    Whipple\\'s procedure is the treatment of choice for pancreatic and periampullary malignancies. Preoperative histological confirmation of malignancy is frequently unavailable and some patients will subsequently be found to have benign disease. Here, we review our experience with Whipple\\'s procedure for patients ultimately proven to have benign disease. The medical records of all patients who underwent Whipple\\'s procedure during a 15-year period (1987-2002) were reviewed; 112 patients underwent the procedure for suspected malignancy. In eight cases, the final histology was benign (7.1%). One additional patient was known to have benign disease at resection. The mean age was 50 years (range: 30-75). The major presenting features included jaundice (five), pain (two), gastric outlet obstruction (one), and recurrent gastrointestinal haemorrhage (one). Investigations included ultrasound (eight), computerised tomography (eight), endoscopic retrograde cholangiopancreatography (seven; of these, four patients had a stent inserted and three patients had sampling for cytology), and endoscopic ultrasound (two). The pathological diagnosis included benign biliary stricture (two), chronic pancreatitis (two), choledochal cyst (one), inflammatory pseudotumour (one), cystic duodenal wall dysplasia (one), duodenal angiodysplasia (one), and granular cell neoplasm (one). There was no operative mortality. Morbidity included intra-abdominal collection (one), anastomotic leak (one), liver abscess (one), and myocardial infarction (one). All patients remain alive and well at mean follow-up of 41 months. Despite recent advances in diagnostic imaging, 8% of the patients undergoing Whipple\\'s procedure had benign disease. A range of unusual pathological entities can mimic malignancy. Accurate preoperative histological diagnosis may have allowed a less radical operation to be performed. Endoscopic ultrasound-guided fine needle aspirate (EUS-FNA) may reduce the need for Whipple\\'s operation

  1. Radical Pancreaticoduodenectomy for Benign Disease

    Directory of Open Access Journals (Sweden)

    D. O. Kavanagh

    2008-01-01

    Full Text Available Whipple's procedure is the treatment of choice for pancreatic and periampullary malignancies. Preoperative histological confirmation of malignancy is frequently unavailable and some patients will subsequently be found to have benign disease. Here, we review our experience with Whipple's procedure for patients ultimately proven to have benign disease. The medical records of all patients who underwent Whipple's procedure during a 15-year period (1987–2002 were reviewed; 112 patients underwent the procedure for suspected malignancy. In eight cases, the final histology was benign (7.1%. One additional patient was known to have benign disease at resection. The mean age was 50 years (range: 30–75. The major presenting features included jaundice (five, pain (two, gastric outlet obstruction (one, and recurrent gastrointestinal haemorrhage (one. Investigations included ultrasound (eight, computerised tomography (eight, endoscopic retrograde cholangiopancreatography (seven; of these, four patients had a stent inserted and three patients had sampling for cytology, and endoscopic ultrasound (two. The pathological diagnosis included benign biliary stricture (two, chronic pancreatitis (two, choledochal cyst (one, inflammatory pseudotumour (one, cystic duodenal wall dysplasia (one, duodenal angiodysplasia (one, and granular cell neoplasm (one. There was no operative mortality. Morbidity included intra-abdominal collection (one, anastomotic leak (one, liver abscess (one, and myocardial infarction (one. All patients remain alive and well at mean follow-up of 41 months. Despite recent advances in diagnostic imaging, 8% of the patients undergoing Whipple'’s procedure had benign disease. A range of unusual pathological entities can mimic malignancy. Accurate preoperative histological diagnosis may have allowed a less radical operation to be performed. Endoscopic ultrasound–guided fine needle aspirate (EUS-FNA may reduce the need for Whipple's operation in

  2. Benign fibrous histiocytoma of the lumbar vertebrae

    Energy Technology Data Exchange (ETDEWEB)

    Demiralp, Bahtiyar; Oguz, Erbil; Sehirlioglu, Ali [Gulhane Military Medical Academy, Department of Orthopedics and Traumatology, Ankara (Turkey); Kose, Ozkan [Diyarbakir Education and Research Hospital, Department of Orthopedics and Traumatology, Diyarbakir (Turkey); Ataslar Serhat Evleri, Diclekent Bulvari, Diyarbakir (Turkey); Sanal, Tuba [Gulhane Military Medical Academy, Department of Radiology, Ankara (Turkey); Ozcan, Ayhan [Gulhane Military Medical Academy, Department of Pathology, Ankara (Turkey)

    2009-02-15

    Benign fibrous histiocytoma is an extremely rare spinal tumor with ten reported cases in the literature. Benign fibrous histiocytoma constitutes a diagnostic challenge because it shares common clinical symptoms, radiological characteristics, and histological features with other benign lesions involving the spine. We present a case of benign fibrous histiocytoma of the lumbar spine and discuss its differential diagnosis and management. (orig.)

  3. Benign mixed tumor of the lacrimal sac

    Directory of Open Access Journals (Sweden)

    Jong-Suk Lee

    2015-01-01

    Full Text Available Neoplasms of the lacrimal drainage system are uncommon, but potentially life-threatening and are often difficult to diagnose. Among primary lacrimal sac tumors, benign mixed tumors are extremely rare. Histologically, benign mixed tumors have been classified as a type of benign epithelial tumor. Here we report a case of benign mixed tumor of the lacrimal sac.

  4. Environmentally Benign Stab Detonators

    Energy Technology Data Exchange (ETDEWEB)

    Gash, A E

    2006-07-07

    The coupling of energetic metallic multilayers (a.k.a. flash metal) with energetic sol-gel synthesis and processing is an entirely new approach to forming energetic devices for several DoD and DOE needs. They are also practical and commercially viable manufacturing techniques. Improved occupational safety and health, performance, reliability, reproducibility, and environmentally acceptable processing can be achieved using these methodologies and materials. The development and fielding of this technology will enhance mission readiness and reduce the costs, environmental risks and the necessity of resolving environmental concerns related to maintaining military readiness while simultaneously enhancing safety and health. Without sacrificing current performance, we will formulate new impact initiated device (IID) compositions to replace materials from the current composition that pose significant environmental, health, and safety problems associated with functions such as synthesis, material receipt, storage, handling, processing into the composition, reaction products from testing, and safe disposal. To do this, we will advance the use of nanocomposite preparation via the use of multilayer flash metal and sol-gel technologies and apply it to new small IIDs. This work will also serve to demonstrate that these technologies and resultant materials are relevant and practical to a variety of energetic needs of DoD and DOE. The goal will be to produce an IID whose composition is acceptable by OSHA, EPA, the Clean Air Act, Clean Water Act, Resource Recovery Act, etc. standards, without sacrificing current performance. The development of environmentally benign stab detonators and igniters will result in the removal of hazardous and toxic components associated with their manufacturing, handling, and use. This will lead to improved worker safety during manufacturing as well as reduced exposure of Service personnel during their storage and or use in operations. The

  5. Surgery for Benign Salivary Neoplasms.

    Science.gov (United States)

    Gillespie, M Boyd; Iro, Heinrich

    2016-01-01

    Salivary neoplasms are relatively infrequent entities that account for only 4% of tumors of the head and neck. Although slow-growing lesions of the preauricular area and submandibular space are often confused with sebaceous cysts, lymph nodes, or lipomas by the non-otolaryngologist, otolaryngologists-head and neck surgeons recognize that all preauricular and submandibular masses should be considered a salivary neoplasm until proven otherwise. Surgery remains the treatment of choice for benign salivary gland neoplasms; however, techniques continue to evolve in order to preserve salivary function and reduce surgical morbidity. The goals of management of benign salivary neoplasms include accurate diagnosis of the lesion, complete surgical extirpation, and functional preservation of adjacent cranial nerves. Accurate diagnosis is aided by appropriate preoperative physical examination, imaging, and fine needle aspiration biopsy. Benign neoplasms typically present as slow-growing, painless, mobile masses without adverse features, such as tissue fixation, ulceration, a cranial nerve deficit, or regional lymphadenopathy. Preoperative imaging with ultrasonography, computed tomography, or magnetic resonance imaging reveals well-circumscribed lesions without an infiltrative growth pattern or associated adenopathy. Fine needle aspiration biopsy may favor a benign neoplasm, supporting the clinical presentation. Surgery for a benign or malignant salivary neoplasm is in essence a false dichotomy since the surgeon can never be completely confident of the diagnosis until the specimen is removed. The surgeon must recognize the significant overlap between benign and malignant salivary masses in terms of clinical presentation, imaging, and cytology, which requires the surgeon to remain vigilant and flexible at the time of surgery should tissue characteristics or frozen section analysis suggest a malignant process.

  6. Is "Benign Childhood Epilepsy with Centrotemporal Spikes” Always Benign?

    Directory of Open Access Journals (Sweden)

    Muhammad SAEED

    2014-07-01

    Full Text Available How to Cite This Article: Saeed M, Azam M, Shabbir N, Qamar ShA. Is "Benign Childhood Epilepsy with Centrotemporal Spikes" Always Benign? Iran J Child Neurol. 2014 Summer;8(3: 39-45.AbstractObjectiveTo determine the prevalence of associated behavioral problems and prognosis with Benign Childhood Epilepsy with CentroTemporal Spikes (BCECTS.Descriptive, Cross Sectional study that was conducted from October 2009 to April 2013 in the Department of Pediatric Neurology, the Children’s Hospital Taif, KSA.Material & MethodsThis study was conducted after approval from the Ethics Committee of the Children’s Hospital Taif, Saudi Arabia. Thirty-two patients from the age of 3 to 10 years old were recruited from the pediatric neurology clinic over a period of 4 years. All the patients were selected based on history, EEGs, and neuropsychological and neurological examinations.EEGs were performed for all the patients while in awake and sleep states. Those who had centrotemporal discharges were included in the study. All the patients also underwent a brain MRI. Only two patients had mild cortical atrophy but developmentally they were normal.ResultsIn our study, prevalence of BRE is 32/430 (7.44%. Among the 32 cases, 24 were male and eight were female. Six cases out of 32 indicated a family history of BRE. Twenty-eight cases had unilateral right sided centrotemporal discharges and four had bilateral discharges.ConclusionIt is possible that for BECTS, a high number of seizures might play an important role in the development of mild cognitive impairment and/or behavior disturbances.ReferencesBradley WG, Daroff RB, Fenichel JM, Jahrovic J. Neurology of clinical practice. 5th Ed. 2009: pp. 1953-1990.Berg AT, Berkovic SF, Brodie MJ, Buchhalter J, Cross H, Van Emde Boas M, et al: Revised terminology and concepts for organization of seizures and epilepsies: Report of the ILAE Commission on Classification and Terminology, 2005–2009. Epilepsia. 2010

  7. Predatory bacteria are nontoxic to the rabbit ocular surface

    Science.gov (United States)

    Romanowski, Eric G.; Stella, Nicholas A.; Brothers, Kimberly M.; Yates, Kathleen A.; Funderburgh, Martha L.; Funderburgh, James L.; Gupta, Shilpi; Dharani, Sonal; Kadouri, Daniel E.; Shanks, Robert M. Q.

    2016-01-01

    Given the increasing emergence of antimicrobial resistant microbes and the near absent development of new antibiotic classes, innovative new therapeutic approaches to address this global problem are necessary. The use of predatory bacteria, bacteria that prey upon other bacteria, is gaining interest as an “out of the box” therapeutic treatment for multidrug resistant pathogenic bacterial infections. Before a new antimicrobial agent is used to treat infections, it must be tested for safety. The goal of this study was to test the tolerability of bacteria on the ocular surface using in vitro and in vivo models. Predatory bacteria Bdellovibrio bacteriovorus and Micavibrio aeruginosavorus were found to be non-toxic to human corneal stromal keratocytes in vitro; however, they did induce production of the proinflammatory chemokine IL-8 but not IL-1β. Predatory bacteria did not induce inflammation on the ocular surface of rabbit eyes, with and without corneal epithelial abrasions. Unlike a standard of care antibiotic vancomycin, predatory bacteria did not inhibit corneal epithelial wound healing or increase clinical inflammatory signs in vivo. Together these data support the safety of predatory bacteria on the ocular surface, but future studies are warranted regarding the use predatory bacteria in deeper tissues of the eye. PMID:27527833

  8. Improved ultrastructure of marine invertebrates using non-toxic buffers.

    Science.gov (United States)

    Montanaro, Jacqueline; Gruber, Daniela; Leisch, Nikolaus

    2016-01-01

    Many marine biology studies depend on field work on ships or remote sampling locations where sophisticated sample preservation techniques (e.g., high-pressure freezing) are often limited or unavailable. Our aim was to optimize the ultrastructural preservation of marine invertebrates, especially when working in the field. To achieve chemically-fixed material of the highest quality, we compared the resulting ultrastructure of gill tissue of the mussel Mytilus edulis when fixed with differently buffered EM fixatives for marine specimens (seawater, cacodylate and phosphate buffer) and a new fixative formulation with the non-toxic PHEM buffer (PIPES, HEPES, EGTA and MgCl2). All buffers were adapted for immersion fixation to form an isotonic fixative in combination with 2.5% glutaraldehyde. We showed that PHEM buffer based fixatives resulted in equal or better ultrastructure preservation when directly compared to routine standard fixatives. These results were also reproducible when extending the PHEM buffered fixative to the fixation of additional different marine invertebrate species, which also displayed excellent ultrastructural detail. We highly recommend the usage of PHEM-buffered fixation for the fixation of marine invertebrates. PMID:27069800

  9. Improved ultrastructure of marine invertebrates using non-toxic buffers

    Science.gov (United States)

    Montanaro, Jacqueline; Gruber, Daniela

    2016-01-01

    Many marine biology studies depend on field work on ships or remote sampling locations where sophisticated sample preservation techniques (e.g., high-pressure freezing) are often limited or unavailable. Our aim was to optimize the ultrastructural preservation of marine invertebrates, especially when working in the field. To achieve chemically-fixed material of the highest quality, we compared the resulting ultrastructure of gill tissue of the mussel Mytilus edulis when fixed with differently buffered EM fixatives for marine specimens (seawater, cacodylate and phosphate buffer) and a new fixative formulation with the non-toxic PHEM buffer (PIPES, HEPES, EGTA and MgCl2). All buffers were adapted for immersion fixation to form an isotonic fixative in combination with 2.5% glutaraldehyde. We showed that PHEM buffer based fixatives resulted in equal or better ultrastructure preservation when directly compared to routine standard fixatives. These results were also reproducible when extending the PHEM buffered fixative to the fixation of additional different marine invertebrate species, which also displayed excellent ultrastructural detail. We highly recommend the usage of PHEM-buffered fixation for the fixation of marine invertebrates. PMID:27069800

  10. Nontoxic piperamides and their synthetic analogues as novel antifouling reagents

    KAUST Repository

    Huang, Xiang-Zhong

    2014-03-25

    Bioassay-guided isolation of an acetone extract from a terrestrial plant Piper betle produced four known piperamides with potent antifouling (AF) activities, as evidenced by inhibition of settlement of barnacle cypris larvae. The AF activities of the four piperamides and 15 synthesized analogues were compared and their structure-activity relationships were probed. Among the compounds, piperoleine B and 1-[1-oxo-7-(3′,4′-methylenedioxyphenyl)-6E-heptenyl]-piperidine (MPHP) showed strong activity against settlement of cyprids of the barnacle Balanus amphitrite, having EC50 values of 1.1 ± 0.3 and 0.5 ± 0.2 μg ml-1, respectively. No toxicity against zebra fish was observed following incubation with these two compounds. Besides being non-toxic, 91% of piperoleine B-treated cyprids and 84% of MPHP-treated cyprids at a concentration of 100 μM completed normal metamorphosis in recovery bioassays, indicating that the anti-settlement effect of these two compounds was reversible. Hydrolysis and photolysis experiments indicated that MPHP could be decomposed in the marine environment. It is concluded that piperamides are promising compounds for use in marine AF coatings. © 2014 © 2014 Taylor & Francis.

  11. Benign chondroblastoma (a case report)

    OpenAIRE

    Gulman, Birol; Ciray, Mevlut

    2004-01-01

    Chondroblastoma is a rare benign primary bone neoplasm. The clinical symptoms are generally including adjacent joint because of the lesion arises in the epiphysis of long bones. In this report; a case of chondroblastoma is discussed which was considered to be "Tear of Medial Meniscus" clinically.

  12. Benign concentric annular macular dystrophy

    Directory of Open Access Journals (Sweden)

    Luísa Salles de Moura Mendonça

    2015-06-01

    Full Text Available The purpose of the authors is to show clinical findings of a patient with benign concentric annular macular dystrophy, which is an unusual condition, and part of the "bull’s eye" maculopathy differential diagnosis. An ophthalmologic examination with color perception, fluorescein angiography, and ocular electrophysiology was performed.

  13. Familial benign pemphigus atypical localization

    OpenAIRE

    Reyes, Maria Veronica; Halac, Sabina; Mainardi, Claudio; Kurpis, Maria; Ruiz Lascano, Alejandro

    2016-01-01

    We present an atypical case of familial benign pemphigus (Hailey-Hailey disease), which presented as crusted, annular plaques limited to the back without intertriginous involvement. We could not find in the literature another patient with plaques located solely on the back without a prior history of classical disease.

  14. Caracterização da população hospitalar com bócio multinodular, na área de influência do Hospital de Sousa Martins, na Guarda

    OpenAIRE

    Guedes, Marta Sofia Fernandes Antunes dos Santos

    2010-01-01

    Introdução: O Bócio Multinodular é uma endocrinopatia comum com prevalências de 3-7%, podendo atingir os 50% da população, quando a base dos estudos é a ecografia. Factores genéticos e ambientais influenciam o desenvolvimento desta patologia. O iodo é o factor ambiental major. Daí a importância dos hábitos dietéticos e da área de residência. Diversos estudos revelam uma associação entre o Bócio Multinodular endocrinopatias e/ou patologias imunológicas. O seguimento e terapêutica não são conse...

  15. Multiple chronic benign pulmonary nodules.

    Science.gov (United States)

    Kalifa, L G; Schimmel, D H; Gamsu, G

    1976-11-01

    Four cases are discussed in which were found unusual multiple chronic pulmonary nodules: leiomyomatous hamartomas, rheumatoid nodules, multiple histoplasmomas, and possible multiple plasma cell granulomas (hyalinizing pulmonary nodules). In each case the initial impression of metastic malignancy was countered by more than 2 years' observation, during which time the lesions appeared to be benign. Histologic examination is necessary to exclude malignancy, although a definitive diagnosis may be difficult to establish. PMID:981596

  16. Benign chondroblastoma - malignant radiological appearances

    Energy Technology Data Exchange (ETDEWEB)

    Schulze, K.; Treugut, H.; Mueller, G.E.

    1980-04-01

    The very rare benign chondroblastoma occasionally invades soft tissues and may grow beyond the epiphysis into the metaphysis. In the present case such a tumour did not show the typical radiological appearances, but presented malignant features both on plain films and on the angiogram. The importance of biopsy of tumours which cannot be identified with certainty must be stressed before radical surgery is carried out.

  17. Benign Pediatric Salivary Gland Lesions.

    Science.gov (United States)

    Carlson, Eric R; Ord, Robert A

    2016-02-01

    Salivary gland lesions are rare in pediatric patients. In addition, the types of salivary gland tumors are different in their distribution in specific sites in the major and minor salivary glands in children compared with adults. This article reviews benign neoplastic and nonneoplastic salivary gland disorders in pediatric patients to help clinicians to develop an orderly differential diagnosis that will lead to expedient treatment of pediatric patients with salivary gland lesions.

  18. BENIGN PROSTATIC HYPERPLASIA: UPDATED REVIEW

    OpenAIRE

    Praveen.R

    2013-01-01

    Benign Prostatic Hyperplasia (BPH) is one of the commonest medical conditions affecting the geriatric male population. The enlargement of prostate can lead to various clinical symptoms like difficulty in voiding, urinary retention etc. The symptoms are varied depending on the size of enlargement. The International Prostatic Symptom Score (IPSS) is the gold standard and first step in understanding and diagnosing the disease clinically, but in the recent past there are various other newer tools...

  19. Benign tumours of the vulva

    International Nuclear Information System (INIS)

    Objective: To present clinicopathological analysis of benign tumours of the vulva. Patients and Methods: Thirty cases of benign tumours of vulva were studied during 2 years research period. Detailed history along with complete local and general physical examination followed by all necessary pre-operative investigations were carried out. Excision surgery was the treatment of choice in majority of cases while marsupialization was done for Bartholin's cyst. Histopathology of tumours specimen was also collected. Results: A total of 30 cases were studied. Twenty-two were cystic and 8 were solid tumours. Aggressive angiomyxoma was 10% of solid tumours and Bartholin's cyst was 46.6% of cystic tumours. Most of the patients were multipara and between 21-30 years of age. The main site of tumour was labium majus. Excision surgery for all cases and marsupialization for Bartholin's cyst was treatment of choice. Conclusion: Aggressive angiomyxoma is the commonest solid benign vulval tumour. It should be considered in the differential diagnosis of vulval mass in women of reproductive age. (author)

  20. Benign Papules and Nodules of Oral Mucosa

    Directory of Open Access Journals (Sweden)

    Mehmet Salih Gürel

    2012-12-01

    Full Text Available This article reviews some of the more common benign oral papules and nodules of oral mucosa with emphasis on their etiology, epidemiology, clinical presentation, histopathology, and treatment. These lesions include mucocele, traumatic fibroma, epulis, pyogenic granuloma, oral papilloma, oral warts, lymphangioma, hemangioma, lipoma, oral nevi and some soft tissue benign tumors. These benign lesions must be separated clinically and histologically from precancerous and malign neoplastic lesions. Accurate clinico-pathological diagnosis is mandatory to insure appropriate therapy.

  1. 甲状腺多发良性结节术后并发症风险的比较—Meta分析%Compare the postoperative complications incidence of benign multi-nodular goiter: A meta-analysis

    Institute of Scientific and Technical Information of China (English)

    Pilei Si; Yulin Xu; Yi Tu; Yi Guo; Shengrong Sun

    2012-01-01

    Objective: The aim of our study was to compare the risk of main postoperative complications of patients underwent total thyroidectomy (TT), near total thyroidectomy (NTT) and subtotal thyroidectomy (ST) for treating BMNG. Methods:Electronic databases including Cochrane Controlled Trials Register, EMbase, Medline, SCI Expanded-ISI, NTIS, SIGLE and CNKI were searched. Eligible studies were randomized controlled trials which compared the incidence of postoperative complications of TT with ST/NTT for treating BMNG. Data extraction was using predefined data fields and assessment of methodological quality with the GRADE approach. A Mantel-Haenszel random-effects model was used and the effect sizes were expressed by using relative risks and 95% confidence intervals. Results: Four studies including 881 participants that met inclusion criteria were analyzed. Compared with ST/NTT, TT was associated with increased risk of transient RLNI (recurrent laryngeal nerve injuries) (relative risk 2.18, 95% confidence interval 1.08 to 4.42; P 0.05) and permanent hypocalcemia (2.37, 0.35 to 15.97; P > 0.05). The quality of evidence for each individual outcome was ultimately rated as moderate (permanent RLNI and permanent hypocalcemia), low (transient RLNI and transient hypocalcemia).Conclusion: For treating BMNG with thyroidectomy, there were no statistically significant differences in postoperative complications between TT and ST/NTT on a long view.

  2. Benign paroxysmal torticollis in infancy

    Directory of Open Access Journals (Sweden)

    Dimitrijević Lidija

    2006-01-01

    Full Text Available Background. Benign paroxysmal torticollis (BPT is an episodic functional disorder of unknown etiology, characterized by the periods of torticollic posturing of the head, that occurs in the early months of life in healthy children. Case report. We reported two patients with BPT. In the first patient the symptoms were observed at the age of day 20, and disappeared at the age of 3 years. There were 10 episodes, of which 2 were followed by vomiting, pallor, irritability and the abnormal trunk posture. In the second patient, a 12-month-old girl, BPT started from day 15. She had 4 episodes followed by vomiting in the first year. Both girls had the normal psychomotor development. All diagnostical tests were normal. Conclusion. The recognition of BPT, as well as its clinical course may help to avoid not only unnecessary tests and the treatment, but also the anxiety of the parents.

  3. Benign fibroxanthoma of the mandible

    Directory of Open Access Journals (Sweden)

    L Zouloumis

    2011-01-01

    Full Text Available Histiocytomas constitute a large group of tumors, the classification of which created a lot of confusion in the past. For this reason, various attempts were carried out during the last years so that a widely accepted classification system could be defined. Fibroxanthomas, according to contemporary data, are classified into benign histiocytomas and they are mostly located at the skin of extremities. They are rarely localized in the area of the head and neck, where they are found commonly in soft tissue. Fibroxanthomas located at the bones of oral and maxillofacial region are extremely rare. The purpose of this paper is to present a case of a fibroxanthoma located at the mandible as well as to analyze the histological findings of the lesion on which the diagnosis and differential diagnosis were based.

  4. Benign communicating hydrocephalus in children

    Energy Technology Data Exchange (ETDEWEB)

    Kendall, B.; Holland, I.

    1981-03-01

    A review was performed of the computed tomograms (CTs) of 500 children which had been reported as showing widening of the supratentorial subarachnoid spaces with normal cerebral substance. On the basis of this a radiological diagnosis of cerebral atrophy had been made in all but five, who were said to have mengalencephaly. From these, the children with large or abnormally enlarging heads, but normal or only slightly enlarged ventricles, were selected; there were 40 such cases (8%). The clinical condition either improved or remained stable over a period of 2 years; in the majority the scan abnormality regressed (22.5%) or remained static (67.5%). In three cases there was slight progression of the CT changes before stabilisation, but only one case developed classical communicating hydrocephalus necessitating a shunt procedure. This condition is a generally benign and mild form of communicating hydrocephalus, for which an aetiological factor was apparent in about two-thirds of the cases studied.

  5. Design of environmentally benign processes

    DEFF Research Database (Denmark)

    Hostrup, Martin; Harper, Peter Mathias; Gani, Rafiqul

    1999-01-01

    This paper presents a hybrid method for design of environmentally benign processes. The hybrid method integrates mathematical modelling with heuristic approaches to solving the optimisation problems related to separation process synthesis and solvent design and selection. A structured method...... of solution, which employs thermodynamic insights to reduce the complexity and size of the mathematical problem by eliminating redundant alternatives, has been developed for the hybrid method. Separation process synthesis and design problems related to the removal of a chemical species from process streams...... because of environmental constraints are particularly suited for solution with the hybrid method. Application of the hybrid method is highlighted through two illustrative examples. The first example involves the determination of an optimal flowsheet for the removal of a chemical species from an azeotropic...

  6. [Radiotherapy of benign intracranial tumors].

    Science.gov (United States)

    Delannes, M; Latorzeff, I; Chand, M E; Huchet, A; Dupin, C; Colin, P

    2016-09-01

    Most of the benign intracranial tumors are meningiomas, vestibular schwannomas, pituitary adenomas, craniopharyngiomas, and glomus tumors. Some of them grow very slowly, and can be observed without specific treatment, especially if they are asymptomatic. Symptomatic or growing tumors are treated by surgery, which is the reference treatment. When surgery is not possible, due to the location of the lesion, or general conditions, radiotherapy can be applied, as it is if there is a postoperative growing residual tumor, or a local relapse. Indications have to be discussed in polydisciplinary meetings, with precise evaluation of the benefit and risks of the treatments. The techniques to be used are the most modern ones, as multimodal imaging and image-guided radiation therapy. Stereotactic treatments, using fractionated or single doses depending on the size or the location of the tumors, are commonly realized, to avoid as much a possible the occurrence of late side effects. PMID:27523417

  7. Benign paroxysmal positional vertigo in Parkinson's disease

    NARCIS (Netherlands)

    Wensen, E. van; Leeuwen, R.B. van; Zaag-Loonen, H.J. van der; Masius-Olthof, S.; Bloem, B.R.

    2013-01-01

    BACKGROUND: Dizziness is a frequent complaint of patients with Parkinson's disease (PD), and orthostatic hypotension (OH) is often thought to be the cause. We studied whether benign paroxysmal positional vertigo (BPPV) could also be an explanation. AIM: To assess the prevalence of benign paroxysmal

  8. An Environmentally Benign Access to Dimethylated 1,6-Dihydropyrimidines Using Dimethyl Carbonate as Methylating Agent under Microwave

    Institute of Scientific and Technical Information of China (English)

    WANG Xi-Cun; QUAN Zheng-Jun; ZHANG Zhang

    2008-01-01

    An environmentally benign procedure for dimethylated 1,6-dihydropyrimidines has been developed by the reaction of 1,2,3,4-tetrahydropyrimidine-2-thiones with dimethyl carbonate, a non-toxic and environmentally friendly reagent.The methylation of 1,2,3,4-tetrahydropyrimidine-2-thione was promoted by MgO and tetrabutylammonium bromide (TBAB) under microwave.This protocol avoids the use of strong bases and highly toxic methylating agents such as methyl halide or dimethyl sulfate.Additionally, the possible role of MgO/TBAB in the reaction was also presented.

  9. Nocturia and benign prostatic hyperplasia

    Directory of Open Access Journals (Sweden)

    Laketić Darko

    2008-01-01

    Full Text Available Background/Aim. Nocturia often occurs in patients with benign prostate hyperplasia (BPH. The aim of the study was to investigate the frequency of nocturia in patients with BPH. Nocturia and other factors associated with it were also investigated. Methods. Forty patients with the confirmed diagnosis of BPH were studied. Transurethral and transvesical prostatectomy were performed in all the patients. Symptoms were evaluated with the International Prostate Symptom Score before, as well as three and six months after the surgery. All the results were compared with the control group. Results. There was no statistically significant difference between the patients before and after the surgery regarding nocturia. There was, however, a statistically significant difference between the operated patients and the control group regarding nocturia, as well as a statistically significant correlation between noctruia and the age of the patients in both the investigated and the control group. A correlation also existed between nocturia and the prostatic size. Conclusion. There was no statistically significant improvement in symptoms of nocturia after the surgery. It is necessary to be very careful in decision making in patients with nonabsolute indiction for surgery and isolated bothersome symptom of nocturia. Age of a patient should also be considered in the evaluation of favorable result of the surgery because of a significant correlation between noctura and the age of a patient.

  10. [Benign prostatic hyperplasia: background and diagnosis].

    Science.gov (United States)

    Gratzke, C; Schlenker, B; Weidlich, P; Seitz, M; Reich, O; Stief, C G

    2007-08-16

    Lower UrinaryTracts Symptoms (LUTS) due to Benign Prostatic Hyperplasia (BPH) represent an increasing prevalent condition in ageing men. Patients often seek primarily consultation at their general practitioner. Aetiology and natural history of LUTS due to BPH have not been completely clarified. The development of symptomatic LUTS is age-dependent and determined to varying degrees by the presence of Benign Prostatic Hyperplasia (BPH), Benign Prostatic Enlargement (BPE) as well as Bladder Outlet Obstruction (BOO). A causal relationship does not always exist. Basis for a specific medical or surgical treatment in the individual patient with LUTS due to BPH is an exact diagnosis by the practising urologist. PMID:17912862

  11. Active prey selection in two pelagic copepods feeding on potentially toxic and non-toxic dinoflagellates

    DEFF Research Database (Denmark)

    Schultz, Mette; Kiørboe, Thomas

    2009-01-01

    Grazing on two red tide dinoflagellates, the potentially toxic Karenia mikimotoi and the non-toxic Gyrodinium instriatum, was examined in two species of marine copepods, Pseudocalanus elongatus and Temora longicornis. Both copepods cleared K. mikimotoi at rates that were a little lower...

  12. Non-toxic liquid propellant selection method a requirement-oriented approach

    NARCIS (Netherlands)

    Bombelli, V.; Maree, A.G.M.; Caramelli, F.

    2005-01-01

    Commercial pressure on users and suppliers of space systems is forcing industry to reduce operational time and costs on ground and to increase reliability of operations in orbit. One opportunity has been identified in the use of non-toxic alternatives to established state-of the art propellants for

  13. Horizontal Canal Benign Positional Vertigo

    Directory of Open Access Journals (Sweden)

    Mohtaram Najafi

    1998-03-01

    Full Text Available Benign paroxysmal positional vertigo (BPPV is a syndrome characterized by transient episodes of vertigo in association with rapid changes in head position in Dix-Halpike Maneuver. This kind of vertigo is thought to be caused by migration of otoconial debris into canals other than the posterior canal, such as the anterior or lateral canals. It is also theoretically possible for many aberrant patterns of BPPV to occur from an interaction of debris in several canals, location of debris within the canal, and central adaptation patterns to lesions. The symptoms of BPPV are much more consistent with free-moving densities (canaliths in the posterior SCC rather than fixed densities attached to the cupula. While the head is upright, the particles sit in the PSC at the most gravity-dependent position. The best method to induce and see vertigo and nystagmus in BPPV of the lateral semicircular canal is to rotate head 90°while patient is in the supine position, nystagmus would appear in the unaffected side weaker but longer than the affected side. canal paresis has been described in one third of the patients with BPPV. Adaptation which is one of the remarkable features of BPPV in PSC is rarely seen in LSC. Rotations of 270° or 360° around the yaw axis (the so-called barbecue maneuver toward the unaffected ear are popular methods for the treatment of geotropic HC-BPPV. These maneuvers consist of sequential head turning of 90° toward the healthy side while supine. With these maneuvers, the free-floating otoconial debris migrates in the ampullofugal direction, finally entering the utricle through the nonampullated end of the horizontal canal. This kind of vertigo recovers spontaneously more rapidly and suddenly.

  14. Assessment of Cost Impacts of Using Non-Toxic Propulsion in Satellites

    Science.gov (United States)

    Schiebener, P. J.; Gies, O.; Stuhlberger, J.; Schmitz, H.-D.

    2002-01-01

    The growing costs of space missions, the need for increased mission performance, and concerns associated with environmental issues deeply influence propulsion system design and propellant selection criteria. A propellant's performance was defined in the past exclusively in terms of specific impulse and density, but now high-performance, non-toxic, non-sophisticated mono- propellant systems are key drivers, and are considered for development to replace the traditional hydrazine (N2H4) mono-propellant thrusters. The mono-propellants under consideration are propellant formulations, which should be environmentally friendly, should have a high density, equal or better performance and better thermal characteristics than hydrazine. These considerations raised interest specially in the candidates of Hydroxylammonium Nitrate (HAN)-based propellants, Ammoniumdinitramide (ADN)-based propellants, Tri-ethanol (TEAN)-based propellants, Hydrazinium Nitroformate (HNF)-based propellants, Hydrogen Peroxide (H2O2)-based propellants. A near-term objective in consideration of satellite related process optimisation is to significantly reduce on-ground operations costs and at the same time improve mission performance. A far-term objective is to obtain a system presenting a very high performance, illustrated by a high specific impulse. Moving to a "non-toxic" propulsion system seems to be a solution to these two goals. The sought after benefits for non-toxic spacecraft mono-propellant propulsion are under investigation taking into account the four main parameters which are mandatory for customer satisfaction while meeting the price constraints: - Reliability, availability, maintainability and safety, - Manufacturing, assembly, integration and test, - Launch preparation and support, - Ground support equipment. These benefits of non-toxic mono-propellants can be proven by various examples, like an expected reduction of development costs due the non-toxicity of propellants which might allow

  15. Benign Lesions of The Vocal Fold

    Directory of Open Access Journals (Sweden)

    Ozgur Surmelioglu

    2013-02-01

    Full Text Available Benign lesions of vocal folds are common disorders. Fifty percent of patients who have sound complaints are found to have these lesions after endoscopic and stroboscopic examinations. Benign vocal fold diseases are primarily caused by vibratory trauma. However they may also occur as a result of viral infections and congenital causes. These lesions are often presented with the complaints of dysphonia. [Archives Medical Review Journal 2013; 22(1.000: 86-95

  16. Intra-abdominal benign multicystic peritoneal mesothelioma.

    Science.gov (United States)

    Jouvin, I; Dohan, A; Gergi, P; Pocard, M

    2014-04-01

    Benign multicystic peritoneal mesotheliomas are rare: pre-operative diagnosis relies on proper imaging. The differential diagnosis includes pseudomyxoma peritonei and other peritoneal cysts. Absence of previous surgical resection offers the best chance of success when complete resection is performed in a specialized center. We report the case of a 43 year-old man with benign multicystic peritoneal mesothelioma treated by cytoreductive surgery and hyperthermic intraperitoneal chemotherapy. PMID:24433857

  17. Current treatment of benign biliary strictures

    OpenAIRE

    Costamagna, Guido; Boškoski, Ivo

    2013-01-01

    Endoscopy is a widely used approach for the treatment of benign biliary strictures. Most common benign biliary strictures amandable to endoscopic treatment are post-cholecystectomy, dominant biliary strictures due to primary sclerosing cholangitis, biliary anastomotic strictures occurring after liver transplantation, and common bile duct strictures due to chronic pancreatitis. Surgery is a valid option in cases of complete transection or ligation of the common bile duct, in selected patients ...

  18. Computed tomographic findings of benign retroperitoneal tumors

    Energy Technology Data Exchange (ETDEWEB)

    Matsuura, Takashi; Nakata, Hajime; Nakayama, Chikashi (Univ. of Occupational and Environmental Health School of Medicine, Kitakyushu, Fukuoka (Japan)); Nishitani, Hiroshi; Matsuura, Keiichi

    1983-07-01

    We have reviewed the computed tomographic (CT) findings of 8 cases of benign retroperitoneal tumors with histological proof. Two teratomas, two schwannomas, and one each of epidermoid cyst, simple cyst, bronchogenic cyst, and cystic lymphangioma were included. The most common CT appearance of these tumors was the solitary, round, well-demarcated, relatively low density mass. Capsule or calcification was demonstrated in some. CT is a highly valuable non-invasive examination method for a diagnosis of a benign retroperitoneal tumor.

  19. Apparent digestibility of nutrients, energy, and amino acid of nontoxic and detoxified physic nut cakes for Nile tilapia

    Directory of Open Access Journals (Sweden)

    Hamilton Hisano

    2015-09-01

    Full Text Available Abstract:The objective of this work was to evaluate the apparent digestibility coefficients of nutrients, energy, and amino acids of nontoxic and detoxified physic nut cakes treated with solvent plus posterior extrusion, for Nile tilapia. The apparent digestibility coefficients of crude protein and gross energy were higher for detoxified than for nontoxic physic nut cake. However, the apparent digestibility coefficient of ether extract of the nontoxic physic nut cake was higher than that of the detoxified one. The apparent digestibility coefficient of amino acids of both feed ingredients was superior to 80%, except for glycine, for the nontoxic psychic nut cake, and for threonine, for the detoxified one. Nontoxic and detoxified physic nut cakes show apparent digestibility coefficient values equivalent to those of the other evaluated oilseeds and potential for inclusion in Nile tilapia diets.

  20. Anthemis xylopoda flowers aqueous extract assisted in situ green synthesis of Cu nanoparticles supported on natural Natrolite zeolite for N-formylation of amines at room temperature under environmentally benign reaction conditions.

    Science.gov (United States)

    Nasrollahzadeh, Mahmoud; Sajadi, S Mohammad; Hatamifard, Arezo

    2015-12-15

    Zeolites, which are nontoxic, abundant, and cheap, are very promising supports for the design and preparation of new and environmentally benign catalysts. In this study, Cu nanoparticles (NPs) were immobilized on the surface of natural Natrolite zeolite by Anthemis xylopoda flowers aqueous extract as a reducing and stabilizing agent. Afterward, the catalytic performance of the prepared catalyst was investigated for N-formylation of amines at room temperature under environmentally benign reaction conditions. The catalyst could be reused at least 5 times without any decrease in activity. The advantages of the present protocol include the use of green catalyst, easy isolation of the products, reusability of catalyst, absence of nontoxic reagents, and excellent yield of the products. PMID:26319331

  1. Anthemis xylopoda flowers aqueous extract assisted in situ green synthesis of Cu nanoparticles supported on natural Natrolite zeolite for N-formylation of amines at room temperature under environmentally benign reaction conditions.

    Science.gov (United States)

    Nasrollahzadeh, Mahmoud; Sajadi, S Mohammad; Hatamifard, Arezo

    2015-12-15

    Zeolites, which are nontoxic, abundant, and cheap, are very promising supports for the design and preparation of new and environmentally benign catalysts. In this study, Cu nanoparticles (NPs) were immobilized on the surface of natural Natrolite zeolite by Anthemis xylopoda flowers aqueous extract as a reducing and stabilizing agent. Afterward, the catalytic performance of the prepared catalyst was investigated for N-formylation of amines at room temperature under environmentally benign reaction conditions. The catalyst could be reused at least 5 times without any decrease in activity. The advantages of the present protocol include the use of green catalyst, easy isolation of the products, reusability of catalyst, absence of nontoxic reagents, and excellent yield of the products.

  2. Synthesis of Boron Nanorods by Smelting Non-Toxic Boron Oxide in Liquid Lithium

    OpenAIRE

    Amartya Chakrabarti; Tao Xu; Laura K. Paulson; Krise, Kate J.; Maguire, John A; Hosmane, Narayan S.

    2010-01-01

    In contrast to the conventional bottom-up syntheses of boron nanostructures, a unique top-down and greener synthetic strategy is presented for boron nanorods involving nontoxic boron oxide powders ultrasonically smelted in liquid lithium under milder conditions. The product was thoroughly characterized by energy dispersive X-ray analysis, atomic emission spectroscopy, thermogravimetric analysis and, UV-Vis spectroscopy, including structural characterization by transmission electron microscop...

  3. "Non-Toxic" Proteins of the Botulinum Toxin Complex Exert In-vivo Toxicity.

    Science.gov (United States)

    Miyashita, Shin-Ichiro; Sagane, Yoshimasa; Suzuki, Tomonori; Matsumoto, Takashi; Niwa, Koichi; Watanabe, Toshihiro

    2016-01-01

    The botulinum neurotoxin (BoNT) causes muscle paralysis and is the most potent toxin in nature. BoNT is associated with a complex of auxiliary "Non-Toxic" proteins, which constitute a large-sized toxin complex (L-TC). However, here we report that the "Non-Toxic" complex of serotype D botulinum L-TC, when administered to rats, exerts in-vivo toxicity on small-intestinal villi. Moreover, Serotype C and D of the "Non-Toxic" complex, but not BoNT, induced vacuole-formation in a rat intestinal epithelial cell line (IEC-6), resulting in cell death. Our results suggest that the vacuole was formed in a manner distinct from the mechanism by which Helicobacter pylori vacuolating toxin (VacA) and Vibrio cholerae haemolysin induce vacuolation. We therefore hypothesise that the serotype C and D botulinum toxin complex is a functional hybrid of the neurotoxin and vacuolating toxin (VT) which arose from horizontal gene transfer from an ancestral BoNT-producing bacterium to a hypothetical VT-producing bacterium. PMID:27507612

  4. Benign multicystic peritoneal mesothelioma: a case report

    Directory of Open Access Journals (Sweden)

    Papapaulou Leonidas

    2010-11-01

    Full Text Available Abstract Introduction We report the case of a patient with a benign multicystic peritoneal mesothelioma and describe its appearance on computed tomography scans and ultrasonography, in correlation with gross clinical and pathological findings. Case presentation A 72-year-old Caucasian woman presented to our emergency department with acute abdomen signs and symptoms. A clinical examination revealed a painful palpable mass in her left abdomen. Abdominal ultrasonography and computed tomography demonstrated the presence of a large cystic mass in her left upper abdomen, adjacent to her left hemidiaphragm. The lower border of the mass extended to the upper margin of her pelvis. A complete resection of the lesion was performed. Pathological analysis showed a benign multicystic peritoneal mesothelioma. Conclusions Benign multicystic peritoneal mesothelioma is a rare lesion with a non-specific appearance on imaging. Its diagnosis always requires pathological analysis.

  5. Pharmacological treatment of the benign prostatic hyperplasia

    International Nuclear Information System (INIS)

    Benign prostatic hyperplasia is a common disease in over 50 years-old men consisting in uncontrolled and benign growth of prostatic gland that leads to lower urinary tract symptoms. The etiology of benign prostatic hyperplasia is multifactoral involving the increased conversion of testosterone in dihydrotestosterone by the prostatic 5α-reductase action, which brought about events that encourage the prostate growth (static component) and the increase of the bladder and prostate smooth muscle tone (dynamic component) regulated by the aα1 -adrenoceptors (ADR). The pharmacological treatment of the benign prostatic hyperplasia includes the prostatic 5aα-reductase inhibitors, the aα1-adrenoreceptor blockers, their combined therapy and the phytotherapy. This paper was aimed at presenting the most relevant aspects of the pharmacology of drugs used for treating the benign prostatic hyperplasia, and providing elements to analyze their efficacy, safety and tolerability. To this end, a review was made of the different drugs for the treatment of this pathology and they were grouped according to their mechanism of action. Natural products were included as lipid extracts from Serenoa repens and Pygeum africanum as well as D-004, a lipid extract from Roystonea regia fruits, with proved beneficial effects on the main etiological factors of benign prostatic hyperplasia. D-004 is a prostatic 5a-reductase inhibitor, an aα1-adrenoceptor antagonist, aα 5-lipooxygenase inhibitor and has antioxidant action, all of which reveals a multifactoral mechanism. The results achieved till now indicate that D-004 is a safe and well-tolerated product

  6. Diagnostik og behandling af benigne levertumorer

    DEFF Research Database (Denmark)

    Eriksen, Peter Lykke; Schultz, Nicolai Aagaard; Larsen, Lars Peter;

    2016-01-01

    Due to the expanding use of diagnostic imaging, an increasing number of liver tumours are discovered. Benign tumours are very common; they rarely cause symptoms and often they do not require any treatment. However, because of differences in the natural history including risk of complications and...... malignant transformation exact diagnosis is important. Dedicated radiological examinations serve as important diagnostic tools reducing the need for biopsy. In this review we provide an update on the diagnosis and treatment of benign liver tumours adding to existing recommendations on hepatocellular...

  7. The decline of hysterectomy for benign disease.

    LENUS (Irish Health Repository)

    Horgan, R P

    2012-01-31

    Hysterectomy is one of the most common gynaecological surgical procedures performed but there appears to be a decline in the performance of this procedure in Ireland in recent times. We set out to establish the extent of the decline of hysterectomy and to explore possible explanations. Data for hysterectomy for benign disease from Ireland was obtained from the Hospital In-Patient Enquiry Scheme (HIPE) section of the Economic and Social Research Institute for the years 1999 to 2006. The total number of hysterectomies performed for benign disease showed a consistent decline during this time. There was a 36% reduction in the number of abdominal hysterectomy procedures performed.

  8. Benign cephalic histiocytosis: report of four cases.

    Science.gov (United States)

    de Luna, M L; Glikin, I; Golberg, J; Stringa, S; Schroh, R; Casas, J

    1989-09-01

    We cared for four patients with benign cephalic histiocytosis, a self-healing non-X, nonlipid cutaneous histiocytosis of children. The age of onset of the disease was 5 to 9 months, with papules and erythematous macules involving the head (mainly the cheeks), and posterior spread to the trunk and limbs in three patients. Microscopic examination of skin biopsies revealed a histiocytic infiltrate in the superficial dermis that was S100 protein-negative by immunoperoxidase (PAP method). One patient showed comma-shaped bodies and desmosomelike junctions on electron microscopy. No Birbeck's granules were present. Benign cephalic histiocytosis is a self-limiting condition that requires no treatment.

  9. N-acetyl-meta-aminophenol, the alleged nontoxic isomer of acetaminophen, is toxic in both rat and human precision-cut liver slices

    NARCIS (Netherlands)

    Hadi, Mackenzie; Herpers, Bram; Dragovic, Sanja; van Swelm, Rachel P. L.; Russel, Frans G. M.; Commandeur, Jan N. M.; van de Water, Bob; Groothuis, Genoveva

    2012-01-01

    N-acetyl-meta-aminophenol (AMAP) is generally considered as a non-toxic regioisomer of the well-known hepatotoxicant acetaminophen (APAP). However, so far AMAP has only been shown to be non-toxic in mice and hamsters. To investigate whether AMAP could also be used as non-toxic analog of APAP in stud

  10. Repositioning chairs in benign paroxysmal positional vertigo

    DEFF Research Database (Denmark)

    West, Niels; Hansen, Søren; Møller, Martin Nue;

    2016-01-01

    The objective was to evaluate the clinical value of repositioning chairs in management of refractory benign paroxysmal positional vertigo (BPPV) and to study how different BPPV subtypes respond to treatment. We performed a retrospective chart review of 150 consecutive cases with refractory vertigo...

  11. Benign prostatic hyperplasia: symptoms and objective interpretation

    DEFF Research Database (Denmark)

    Andersen, J T

    1991-01-01

    Considerable new knowledge about benign prostatic hyperplasia has been gained over the past two decades, particularly with regard to its natural history, hydrodynamic changes in the lower urinary tract, and the symptomatic and urodynamic results of treatment. A survey of the literature has been...

  12. Benign solitary solid cold thyroid nodules

    DEFF Research Database (Denmark)

    Døssing, Helle; Bennedbaek, Finn Noe; Karstrup, Steen;

    2002-01-01

    PURPOSE: To evaluate the effects of ultrasonography (US)-guided interstitial laser photocoagulation (ILP) on the volume of benign solitary solid cold thyroid nodules and any nodule-related symptoms. MATERIALS AND METHODS: ILP was performed in 16 patients with normal thyroid function and a solid...... solitary solid cold thyroid nodule in patients who cannot or will not undergo surgery....

  13. Urodynamic implications of benign prostatic hyperplasia

    DEFF Research Database (Denmark)

    Jensen, K M; Andersen, J T

    1990-01-01

    By the age of 60, about 70% of men have developed benign prostatic hyperplasia (BPH), and 85%-95% of these have symptomatic dysfunction of the lower urinary tract, 10%-20% undergoing prostatectomy. Although transurethral resection of the prostate is generally considered to be a safe and effective...

  14. Natural history of benign prostate hyperplasia

    Institute of Scientific and Technical Information of China (English)

    WU Shi-liang; LI Ning-chen; XIAO Yun-xiang; JIN Jie; QIU Shao-peng; YE Zhang-qun; KONG Chui-ze; SUN Guang; NA Yan-qun

    2006-01-01

    Background Benign prostate hyperplasia is one of the most common diseases affecting the health of the aging males. Watchful waiting is an acceptable management strategy for benign prostate hyperplasia in which the patient is monitored by the physician but receives no active intervention. The epidemiological data on this are lacking in China. Our study was designed to evaluate the changes of signs and symptoms of patients with benign prostate hyperplasia during management by watchful waiting in China.Methods One hundred and forty-five patients with benign prostate hyperplasia aged > 50 years were enrolled in management by watchful waiting. All the patients were visited every 6 months and were given an International Prostate Symptom Score and Quality of Life questionnaire to complete. They also had uroflowmetry and were assessed using ultrasonography to get the volume of prostate, transition zone and amount of residual urine. The Student's t test, the Chi-square test, and variance analysis were used in the statistical analysis.Results All patients were visited after 6 months, the mean volume of transitional zone was found to haveincreased by 1.6 ml (P<0.01), International Prostate Symptom Score was increased by 0.8 (P<0.01) and Quality of Life was increased by 0.2 (P<0.01), and there was no statistical change in other data. Among these patients,17.9% (26/145) visited again after 12 months when the data failed to show a statistically significant difference among the three groups (0, 6, and 12 months).Conclusions After one year's follow-up, the progression of benign prostate hyperplasia was slow and the clinical data did not undergo much change.

  15. Does Predator Go for Size Selection or Preferential Toxic-Nontoxic Species Under Limited Resource?

    Directory of Open Access Journals (Sweden)

    Joydeep Pal

    2010-01-01

    Full Text Available Problem statement: Selectivity is common in predator-prey interaction but the selection mechanism is still unexplored and a debatable issue in modern theoretical and experimental ecology for numerous species across the globe. In present investigation we emphasized the hypothesis that the zooplankton is less inclined to opt the food based on size selectivity criteria than the preferential selectivity for the safe non-toxic food species. Approach: As a test bed we select one nontoxic phytoplankton (Chaetocerous gracilis, one toxic phytoplankton (Microcystis aeruginosa and one zooplankton (Artemia salina. Initially the experiment is setup through the small batch cultures of Nontoxic (NTP and toxic Phytoplankton (TPP. Both the strains of phytoplankton are collected from the deltaic region of river Subarnarekha (87°31”E and 21°37”N and the isolation is done in the laboratory. Similarly batches of zooplankton (Brand: Red Top, USA are also hatched and maintained at optimal conditions in the laboratory. We set off the experiments with the physical parameters viz. Photo period: 12: 12 L: D cycle, Temperature: 26-27°C, Salinity: 10 ppt and pH of the medium 7.5. To evaluate our hypothesis in restricted environment we have introduced the zooplankton in a 3 liter beaker with 75: 25 (TPP: NTP food ratio. Biological activities (feeding are monitored for each of the species with regular recorded biomass count on each experimental day till the predator population goes to extinct. Results: The mean biomass profile of zooplankton remains more or less constant at the initial stage but a sharp decline trend has been observed after the 4th day of the experiment. A similar trend has been observed for the mean biomass profile of NTP leading the population toward extinction after 6th experimental day. The entire mean biomass profile trend of TPP can be interpreted as a convolution of three growth pulses viz., initially positive, followed by a negative and

  16. Characterization of ZnS thin films synthesized through a non-toxic precursors chemical bath

    International Nuclear Information System (INIS)

    Highlights: • High quality ZnS thin films have been deposited by chemical bath deposition technique from a non-toxic precursor’s solution. • Nanocrystalline ZnS thin films with large band gap energy were synthesized without using ammonia. • Evidence that the growing of the thin films is carried out by means of hydroxide mechanism was found. • The properties of these ZnS thin films are similar and in some cases better than the corresponding ones produced using toxic precursors such as ammonia. - Abstract: In solar cells, ZnS window layer deposited by chemical bath technique can reach the highest conversion efficiency; however, precursors used in the process normally are materials highly volatile, toxic and harmful to the environment and health (typically ammonia and hydrazine). In this work the characterization of ZnS thin films deposited by chemical bath in a non-toxic alkaline solution is reported. The effect of deposition technique (growth in several times) on the properties of the ZnS thin film was studied. The films exhibited a high percentage of optical transmission (greater than 80%); as the deposition time increased a decreasing in the band gap values from 3.83 eV to 3.71 eV was observed. From chemical analysis, the presence of ZnS and Zn(OH)2 was identified and X-ray diffraction patterns exhibited a clear peak corresponding to ZnS hexagonal phase (1 0 3) plane, which was confirmed by electron diffraction patterns. From morphological studies, compact samples with well-defined particles, low roughness, homogeneous and pinhole-free in the surface were observed. From obtained results, it is evident that deposits of ZnS–CBD using a non-toxic solution are suitable as window layer for TFSC

  17. Endo-biliary stents for benign disease: not always benign after all!

    Directory of Open Access Journals (Sweden)

    Jo-Etienne Abela

    2011-11-01

    Full Text Available This case report describes the presentation, management and treatment of a patient who suffered small bowel perforation due to the migration of his biliary stent which had been inserted for benign disease.

  18. One-step Synthesis of Stable, Nontoxic, Orange Quantum Dots Fluorescent Powder

    Directory of Open Access Journals (Sweden)

    Shuhong Xu

    2016-03-01

    Full Text Available Stable, nontoxic, and aqueous Cu:ZnInSe quantum dots (QDs have been synthesized using one-step method. Through controlling pH, the amount of 3-mercaptopro‐ pionic acid (MPA, and impurities Cu and In, high-quality Cu:ZnInSe QDs have been obtained. First, as-prepared Cu:ZnInSe QDs have better thermal stability. The photolu‐ minescence (PL intensity and wavelength are not changed during long-time heating reflux. Besides, the synthesizing method is simple, and raw materials are green. Cu:ZnInSe QDs are perfect fluorescent powder.

  19. One-step Synthesis of Stable, Nontoxic, Orange Quantum Dots Fluorescent Powder

    OpenAIRE

    Shuhong Xu; Jin Shen; Zhaochong Wang; Jinhua Du; Chunlei Wang; Zengxia Zhao; Yiping Cui

    2016-01-01

    Stable, nontoxic, and aqueous Cu:ZnInSe quantum dots (QDs) have been synthesized using one-step method. Through controlling pH, the amount of 3-mercaptopro‐ pionic acid (MPA), and impurities Cu and In, high-quality Cu:ZnInSe QDs have been obtained. First, as-prepared Cu:ZnInSe QDs have better thermal stability. The photolu‐ minescence (PL) intensity and wavelength are not changed during long-time heating reflux. Besides, the synthesizing method is simple, and raw materials are green. Cu:ZnInS...

  20. Benign Prostatic Hyperstatic Hyperplasia (BPH) (Beyond the Basics)

    Science.gov (United States)

    ... names for benign prostatic hyperplasia include benign prostatic hypertrophy, an enlarged prostate, and BPH. BPH occurs only ... prostatic hyperplasia" .) Alpha blockers — These medications relax the muscle of the prostate and bladder neck, which allows ...

  1. Vitamin D deficiency and benign paroxysmal positioning vertigo

    OpenAIRE

    Büki, Bela; Ecker, Michael; Jünger, Heinz; Lundberg, Yunxia Wang

    2012-01-01

    Benign paroxysmal positional vertigo is a common cause of disabling vertigo with a high rate of recurrence. Although connections between vitamin D deficiency and osteoporosis, as well as between osteoporosis and benign paroxysmal positional vertigo have been suggested respectively in the literature, we are not aware of any publication linking vitamin D and benign paroxysmal positional vertigo. As a hypothesis, we suggest that there is a relation between insufficient vitamin D level and benign...

  2. Benign Multicystic Mesothelioma in the Left Round Ligament: Case Report

    Energy Technology Data Exchange (ETDEWEB)

    Bae, So Young; Yi, Boem Ha; Lee, Hae Kyung; Park, Seong Jin; Cho, Gyu Seok; Kwak, Jeong Ja [Soonchunhyang University Bucheon Hospital, Bucheon (Korea, Republic of)

    2010-02-15

    Benign multicystic mesothelioma is a rare mesothelial lesion that forms multicystic masses in the upper abdomen, pelvis, and retroperitoneum. Most cases have a benign course. We present the ultrasound and MR findings of benign multicystic mesothelioma in the left round ligament, which caused a left inguinal hernia in a 46-year-old woman.

  3. Skeletal scintigraphy in benign and malignant disease

    International Nuclear Information System (INIS)

    This paper begins with a discussion of the technical factors in skeletal scintigraphy, including collimation, the use of three-phase bone scan, and single-photon emission computed tomography. Skeletal scintigraphy for benign conditions is commonly indicated for the patient presenting with pain (trauma, sports-related injury, posttraumatic pain syndrome, painful orthopedic prosthesis) and for the patient with abnormal laboratory test results (metabolic bone disease, Paget disease). For malignant conditions, the bone scan is useful in the evaluation of metastases in patients with extraosseous malignancies and primary bone tumors. The discussion addresses the various scan patterns seen in the more common tumors, such as prostate carcinoma, breast carcinoma, and lung carcinoma. Bone scintigraphy is an exquisitely sensitive modality. With some understanding of the techniques necessary for obtaining the optimal bone scan, and of the patterns that can be seen in various clinical conditions, the radiologist will find the bone scan a very specific tool for evaluating both benign and malignant diseases

  4. Idiopathic benign retroperitoneal cyst: a case report

    Directory of Open Access Journals (Sweden)

    Alzaraa Ahmed

    2008-02-01

    Full Text Available Abstract Introduction Retroperitoneal cysts are uncommon, with an estimated incidence of 1/5750 to 1/250,000. Case presentation A male patient was admitted with an abdominal pain, jaundice and fever. Clinical examination and investigations confirmed an idiopathic benign retroperitoneal cyst. He underwent surgery and was discharged after making good recovery. Conclusion Retroperitoneal cysts are very rare, and most of the time they are discovered incidentally. Patients may be asymptomatic or present with abdominal pain, referred pain to the legs or weight loss. Imaging may help diagnose these lesions, but surgery is the keystone in confirming the diagnosis. This case is very rare and very educational as it highlights an unusual presentation of a benign retroperitoneal cyst. In our patient, the course of the disease was unique as the patient presented with jaundice.

  5. Characteristics of benign lymphoadenosis of oral mucosa

    Institute of Scientific and Technical Information of China (English)

    Shu-Xia Li; Shi-Feng Yu; Kai-Hua Sun

    2005-01-01

    AIM: To investigate the pathological characteristics and carcinogenesis mechanism of benign lymphoadenosis of oral mucosa (BLOM).METHODS: The expressions of Ki-67, CD34 and apoptosis were evaluated by immunohistochemical SP staining in 64 paraffin-embedded tissue samples. Of them, 9 were from BLOM with dysplasia, 15 from BLOM without dysplasia,15 from oral squamous cell carcinoma (OSCC), 15 from oral precancerosis, and 10 from normal tissues. Cell proliferation, apoptosis and angiogenesis of tissue samples were also analyzed.RESULTS: The expression of Ki-67 in BLOM with dysplasia,oral precancerosis and OSCC was significantly higher than in BLOM without dysplasia and normal mucosa. The microvascular density (MVD) in BLOM with and without dysplasia, oral precancerosis, and OSCC was significantly higher than in normal mucosa. Apoptosis in BLOM and oral precancerosis was significantly higher than in OSCC and normal mucosa.CONCLUSION: Benign lymphoadenosis of oral mucosa has potentialities of cancerization.

  6. Endoscopic therapy of benign biliary strictures

    Institute of Scientific and Technical Information of China (English)

    Joel R Judah; Peter V Draganov

    2007-01-01

    Benign biliary strictures are being increasingly treated with endoscopic techniques. The benign nature of the stricture should be first confirmed in order to ensure appropriate therapy. Surgery has been the traditional treatment, but there is increasing desire for minimally invasive endoscopic therapy. At present, endoscopy has become the first line approach for the therapy of postliver transplant anastomotic strictures and distal (Bismuth Ⅰ and Ⅱ) post-operative strictures. Strictures related to chronic pancreatitis have proven more difficult to treat,and endoscopic therapy is reserved for patients who are not surgical candidates. The preferred endoscopic approach is aggressive treatment with gradual dilation of the stricture and insertion of multiple plastic stents. The use of uncovered self expandable metal stents should be discouraged due to poor long-term results. Treatment with covered metal stents or bioabsorbable stents warrants further evaluation. This area of therapeutic endoscopy provides an ongoing opportunity for fresh research and innovation.

  7. Large Penile Mass With Unusual Benign Histopathology.

    Science.gov (United States)

    Johnson, Nate; Voznesensky, Maria; VerLee, Graham

    2015-09-01

    Pseudoepitheliomatous hyperplasia is an extremely rare condition presenting as a lesion on the glans penis in older men. Physical exam without biopsy cannot differentiate malignant from nonmalignant growth. We report a case of large penile mass in an elderly male with a history of lichen sclerosis, highly suspicious for malignancy. Subsequent surgical removal and biopsy demonstrated pseudoepitheliomatous hyperplasia, an unusual benign histopathologic diagnosis with unclear prognosis. We review the literature and discuss options for treatment and surveillance. PMID:26793536

  8. Large Penile Mass With Unusual Benign Histopathology

    Directory of Open Access Journals (Sweden)

    Nate Johnson

    2015-09-01

    Full Text Available Pseudoepitheliomatous hyperplasia is an extremely rare condition presenting as a lesion on the glans penis in older men. Physical exam without biopsy cannot differentiate malignant from nonmalignant growth. We report a case of large penile mass in an elderly male with a history of lichen sclerosis, highly suspicious for malignancy. Subsequent surgical removal and biopsy demonstrated pseudoepitheliomatous hyperplasia, an unusual benign histopathologic diagnosis with unclear prognosis. We review the literature and discuss options for treatment and surveillance.

  9. Case report: Benign porta hepatic schwannoma

    International Nuclear Information System (INIS)

    Schwannoma is a myelin sheath tumor that can occur almost anywhere in the body. The most common locations are the central nervous system, extremities, neck, mediastinum and retroperitoneum. Benign schwannomas in the porta hepatis are extremely rare and radiologically are diagnosed as either enlarged lymph nodes or bowel masses, such as gastrointestinal stromal tumors. In this location they usually produce symptoms by compressing adjacent structures and often present with obstructive jaundice. The preoperative diagnosis can be extremely difficult

  10. Percutaneous treatment of benign bile duct strictures

    Energy Technology Data Exchange (ETDEWEB)

    Koecher, Martin [Department of Radiology, University Hospital, I.P.Pavlova 6, 775 20 Olomouc (Czech Republic)]. E-mail: martin.kocher@seznam.cz; Cerna, Marie [Department of Radiology, University Hospital, I.P.Pavlova 6, 775 20 Olomouc (Czech Republic); Havlik, Roman [Department of Surgery, University Hospital, I.P.Pavlova 6, 775 20 Olomouc (Czech Republic); Kral, Vladimir [Department of Surgery, University Hospital, I.P.Pavlova 6, 775 20 Olomouc (Czech Republic); Gryga, Adolf [Department of Surgery, University Hospital, I.P.Pavlova 6, 775 20 Olomouc (Czech Republic); Duda, Miloslav [Department of Surgery, University Hospital, I.P.Pavlova 6, 775 20 Olomouc (Czech Republic)

    2007-05-15

    Purpose: To evaluate long-term results of treatment of benign bile duct strictures. Materials and methods: From February 1994 to November 2005, 21 patients (9 men, 12 women) with median age of 50.6 years (range 27-77 years) were indicated to percutaneous treatment of benign bile duct stricture. Stricture of hepatic ducts junction resulting from thermic injury during laparoscopic cholecystectomy was indication for treatment in one patient, stricture of hepaticojejunostomy was indication for treatment in all other patients. Clinical symptoms (obstructive jaundice, anicteric cholestasis, cholangitis or biliary cirrhosis) have appeared from 3 months to 12 years after surgery. Results: Initial internal/external biliary drainage was successful in 20 patients out of 21. These 20 patients after successful initial drainage were treated by balloon dilatation and long-term internal/external drainage. Sixteen patients were symptoms free during the follow-up. The relapse of clinical symptoms has appeared in four patients 9, 12, 14 and 24 months after treatment. One year primary clinical success rate of treatment for benign bile duct stricture was 94%. Additional two patients are symptoms free after redilatation (15 and 45 months). One patient is still in treatment, one patient died during secondary treatment period without interrelation with biliary intervention. The secondary clinical success rate is 100%. Conclusion: Benign bile duct strictures of hepatic ducts junction or biliary-enteric anastomosis are difficult to treat surgically and endoscopically inaccessible. Percutaneous treatment by balloon dilatation and long-term internal/external drainage is feasible in the majority of these patients. It is minimally invasive, safe and effective.

  11. Environmentally benign silicon solar cell manufacturing

    Energy Technology Data Exchange (ETDEWEB)

    Tsuo, Y.S. [National Renewable Energy Lab., Golden, CO (United States); Gee, J.M. [Sandia National Labs., Albuquerque, NM (United States); Menna, P. [National Agency for New Technologies Energy and Environment, Portici (Italy); Strebkov, D.S.; Pinov, A.; Zadde, V. [Intersolarcenter, Moscow (Russian Federation)

    1998-09-01

    The manufacturing of silicon devices--from polysilicon production, crystal growth, ingot slicing, wafer cleaning, device processing, to encapsulation--requires many steps that are energy intensive and use large amounts of water and toxic chemicals. In the past two years, the silicon integrated-circuit (IC) industry has initiated several programs to promote environmentally benign manufacturing, i.e., manufacturing practices that recover, recycle, and reuse materials resources with a minimal consumption of energy. Crystalline-silicon solar photovoltaic (PV) modules, which accounted for 87% of the worldwide module shipments in 1997, are large-area devices with many manufacturing steps similar to those used in the IC industry. Obviously, there are significant opportunities for the PV industry to implement more environmentally benign manufacturing approaches. Such approaches often have the potential for significant cost reduction by reducing energy use and/or the purchase volume of new chemicals and by cutting the amount of used chemicals that must be discarded. This paper will review recent accomplishments of the IC industry initiatives and discuss new processes for environmentally benign silicon solar-cell manufacturing.

  12. Impact of the serum thyroglobulin concentration on the diagnostics of benign and malignant thyroid diseases; Stellenwert des Serum-Thyreoglobulinspiegels bei der Diagnostik benigner und maligner Schilddruesenerkrankungen

    Energy Technology Data Exchange (ETDEWEB)

    Rink, T.; Schroth, H.J. [Abt. fuer Nuklearmedizin, Staedtisches Klinikum, Hanau (Germany); Dembowski, W.; Klinger, K. [Medizinische Klinik, St. Vinzenz Krankenhaus, Hanau (Germany)

    2000-08-01

    Aim of this study is to evaluate new and controversially discussed indications for determining the thyroglobulin (Tg) level in different thyroid diseases to support routine diagnostics. Methods: The following groups were included: 250 healthy subjects without goiter, 50 persons with diffuse goiter, 161 patients with multinodular goiter devoid of functional disorder (108 of them underwent surgery, in 17 cases carcinomas were detected), 60 hyperthyroid patients with autonomously functioning nodular goiter, 150 patients with Hashimoto's thyroiditis and 30 hyperthyroid patients with Graves' disease. Results: The upper limit of the normal range of the Tg level was calculated as 30 ng Tg/ml. The evaluation of the collective with diffuse goiter showed that the figure of the Tg level can be expected in a similar magnitude as the thyroid volume in milliliters. Nodular tissue led to far higher Tg values then presumed when considering the respective thyroidvolume, with a rather high variance. A formula for a rough prediction of the Tg levels in nodular goiters is described. In ten out of 17 cases with thyroid carcinoma, the Tg was lower than estimated with thyroid and nodular volumes, but two patients showed a Tg exceeding 1000 ng/ml. The collective with functional autonomy had a significantly higher average Tg level than a matched euthyroid group being under suppressive levothyroxine substitution. However, due to the high variance of the Tg values, the autonomy could not consistently be predicted with the Tg level in individual cases. The patients with Hashimoto's thyroiditis showed slightly decreased Tg levels. In Graves' disease, a significantly higher average Tg level was observed compared with a matched group with diffuse goiter, but 47% of all Tg values were still in the normal range (<30 ng/ml). Conclusion: Elevated Tg levels indicate a high probability of thyroid diseases, such as malignancy, autonomy or Graves' disease. However, as low Tg

  13. Comparative proteomics reveals that a saxitoxin-producing and a nontoxic strain of Anabaena circinalis are two different ecotypes.

    Science.gov (United States)

    D'Agostino, Paul M; Song, Xiaomin; Neilan, Brett A; Moffitt, Michelle C

    2014-03-01

    In Australia, saxitoxin production is restricted to the cyanobacterial species Anabaena circinalis and is strain-dependent. We aimed to characterize a saxitoxin-producing and nontoxic strain of A. circinalis at the proteomic level using iTRAQ. Seven proteins putatively involved in saxitoxin biosynthesis were identified within our iTRAQ experiment for the first time. The proteomic profile of the toxic A. circinalis was significantly different from the nontoxic strain, indicating that each is likely to inhabit a unique ecological niche. Under control growth conditions, the saxitoxin-producing A. circinalis displayed a higher abundance of photosynthetic, carbon fixation and nitrogen metabolic proteins. Differential abundance of these proteins suggests a higher intracellular C:N ratio and a higher concentration of intracellular 2-oxoglutarate in our toxic strain compared with the nontoxic strain. This may be a novel site for posttranslational regulation because saxitoxin biosynthesis putatively requires a 2-oxoglutarate-dependent dioxygenase. The nontoxic A. circinalis was more abundant in proteins, indicating cellular stress. Overall, our study has provided the first insight into fundamental differences between a toxic and nontoxic strain of A. circinalis, indicating that they are distinct ecotypes.

  14. Multinodular goiter treatment with radioiodine aided by recombinant human TSH in different doses: a randomized, double-blind, placebo-controlled study;Administracao previa do TSH humano recombinante, em diferentes doses, no tratamento do bocio multinodular com iodo radioativo: um estudo randomizado, duplo cego, controlado com placebo

    Energy Technology Data Exchange (ETDEWEB)

    Albino, Claudio Cordeiro

    2009-07-01

    Background: There is not an optimal treatment for multinodular goiter (MNG). Surgery is the main therapeutic option because it decreases thyroid volume, reduces compression symptoms and provide histological diagnosis. Radioiodine ({sup 131}I) is an efficient therapeutic option for the treatment of MNG mainly when surgery is not indicated or when the patient refused it. However, high activities of {sup 131}I are frequently required for clinically significant results. This procedure increases the body radiation exposure and the hospitalization costs. Recombinant human TSH (rh TSH) allows a reduction in the administered activity of {sup 131}I with effective thyroid volume (TV) reduction. However, this combination therapeutic can increase collateral effects. Objective: To evaluate the efficacy and safety of low and intermediate doses of rh TSH compared to placebo, associated with a fixed activity of {sup 131}I in MNG treatment. Patients and Methods: Thirty patients with MNG received 0.1 mg of rh TSH (group I, n=10), 0.01 mg of rh TSH (group II, n=10), or placebo (control group, n=10). After 24 hours, 30 mCi of {sup 131}I was given to all patients. Radioactive iodine uptake (RAIU) was determined before and 24 hours after rh TSH. Before and 2, 7, 180 and 360 days after the TV was measured by magnetic resonance image (MRI). The smallest cross-sectional area of tracheal lumen (Scat) was also measured with MRI before, 2 and 7 days after treatment. Antithyroid antibodies, TSH, T3 and free T4 were assessed regularly. Results: After 6 months, the decrease in TV was more significant in groups I (30.3 +- 16.5%) and II (22.6 +- 14.5%), than in control group (5.0 +- 14.6%; p=0.01). After 12 months, TV decreased more in group I (39.2 +- 16.9%) and group II (38.8 +- 24.4%) than in group III (23.4 +- 23.59%) but it was not statistically significant (p=0.205). During the first 30 days,total T3 and free T4 increased, without reaching thyrotoxic levels and TSH decreased. After 12 months

  15. Possibilities of nontoxic autonomous thyroid nodules treatment by percutaneous ethanol injection

    Directory of Open Access Journals (Sweden)

    Anđelković Zoran

    2011-01-01

    Full Text Available Background/Aim. According to the current principles, autonomous functional thyroid nodules are treated by surgery or by radioiodin therapy. Ultrasound guided percutaneous ethanol injection into solid tumors of the soft tissues was a starting point in attempts to treat the thyroid nodules by the same method. The aim of the study was to assess the efficiency of percutaneous injection in treating solitary, nontoxic, autonomous thyroid nodules of up to 15 mL volume. Methods. In 25 patients with solitary nontoxic autonomous thyroid nodules diagnosed by tehnetium-99m scanning as an intensive area having a complete supremacy in the paranodal tissue, an ultrasound guided percutaneous ethanol injection was applied. The procedure was carried out repeatedly once a week until the reduction in nodule size to 50% of the initial size was achieved. Results. An average size of the nodule before curing was 9.68 ± 5.01 mL. An average quantity of the injected ethanol was 9.52 ± 5.08 mL, ie 1.06 ± 0.48 mL/mg of the tissue. The regression of the nodule size in the successfully (Δvol% u = - 57.09 ± 13.75%, p < 0.001 and partly successfully cured (Δvol du = -48.45 ± 14.35%, p < 0.05 was statistically significant compared to the size before the treatment. After ceasing ethanol injection, 18 months later, a further size regression (Δvol% = -79.20 ± 9.89% compared to the initial one (p < 0.001 was noticed. Soon, after the procedure was finished, a statistically significant concentration increase of Thyroid Stimulating Hormone (TSH was noticed compared to the initial values (0.18 ± 0.16 vs 0.34 ± 0.31 mU/L, p < 0.01. According to the given criteria, in two female patients satisfactory results were not achieved, but, a year later, in one of them the nodule was not seen by repeated scintigram. The number and frequency of side effects were insignificant. Conclusion. Repeated percutaneous ethanol injections into nontoxic solitary autonomous thyroid nodules result in

  16. Enrichment of Cellulosic Waste Hemp (Cannabis sativa Hurd into Non-Toxic Microfibres

    Directory of Open Access Journals (Sweden)

    Reinu E. Abraham

    2016-07-01

    Full Text Available In this study a largely available lignocellulose feedstock hemp (Cannabis sativa, obtained as an industrial waste, was used for cellulose extraction. The extraction of cellulose microfibres from hemp biomass was conducted by alkaline treatment and an acidification process. The extracted cellulose microfibres were characterised using Fourier-transformed infrared spectroscopy (FTIR, Scanning electron microscopy (SEM, thermogravimetric analysis (TGA and X-ray diffraction (XRD. The viability of the study was determined by growing human fibroblasts on the preparation which resulted in being non-toxic; indicating its potential in preparing biological scaffolds. Upon enzymatic hydrolysis of the cellulose microfibre using cellulase from Trichoderma reesei, a maximum of 909 mg/g of reducing sugars were obtained, which endorses its suitability for biofuel production.

  17. The dynamics of nutrient, toxic phytoplankton, nontoxic phytoplankton and zooplankton model

    Directory of Open Access Journals (Sweden)

    Hasnaa Fiesal Mohammed Hussien

    2016-02-01

    Full Text Available The objective of this paper is to study the dynamical behavior of an aquatic food web system. A mathematical model that includes nutrients, phytoplankton and zooplankton is proposed and analyzed. It is assumed that, the phytoplankton divided into two compartments namely toxic phytoplankton which produces a toxic substance as a defensive strategy against predation by zooplankton, and a nontoxic phytoplankton. All the feeding processes in this food web are formulating according to the Lotka-Volterra functional response. This model is represented mathematically by the set of nonlinear differential equations. The existence, uniqueness and boundedness of the solution of this model are investigated. The local and global stability conditions of all possible equilibrium points are established. The occurrence of local bifurcation and Hopf bifurcation are investigated. Finally, numerical simulation is used to study the global dynamics of this model.

  18. Detoxification of Atrazine by Endophytic Streptomyces sp. Isolated from Sugarcane and Detection of Nontoxic Metabolite.

    Science.gov (United States)

    Mesquini, Josiane A; Sawaya, Alexandra C H F; López, Begonã G C; Oliveira, Valéria M; Miyasaka, Natalia R S

    2015-12-01

    Atrazine is still one of the most used agricultural pesticides worldwide and it has been recognized as a major contaminant of surface and ground water. The aims of this research were to isolate an endophytic microorganism from leaves of sugarcane, evaluate its ability to degrade atrazine, and investigate the formation of metabolites. By sequencing of the 16S rRNA gene, the endophytic isolate atz2 was identified as Streptomyces sp. The reduction in atrazine concentration by Streptomyces sp. atz2 was 98 % and UHPLC-MS/MS analyses showed the appearance of an unknown metabolite observed as m/z 311. Ecotoxicity tests with an aquatic organism, Daphnia similis, confirmed that this metabolite was nontoxic. This mechanism of detoxification of atrazine is different from the ones of other free-living microorganisms that inhabit the soil or rhizosphere. The results show new aspects of atrazine detoxification, highlighting a new role of endophytic bacteria in plants.

  19. Nontoxic and abundant copper zinc tin sulfide nanocrystals for potential high-temperature thermoelectric energy harvesting.

    Science.gov (United States)

    Yang, Haoran; Jauregui, Luis A; Zhang, Genqiang; Chen, Yong P; Wu, Yue

    2012-02-01

    Improving energy/fuel efficiency by converting waste heat into electricity using thermoelectric materials is of great interest due to its simplicity and reliability. However, many thermoelectric materials are composed of either toxic or scarce elements. Here, we report the experimental realization of using nontoxic and abundant copper zinc tin sulfide (CZTS) nanocrystals for potential thermoelectric applications. The CZTS nanocrystals can be synthesized in large quantities from solution phase reaction and compressed into robust bulk pellets through spark plasma sintering and hot press while still maintaining nanoscale grain size inside. Electrical and thermal measurements have been performed from 300 to 700 K to understand the electron and phonon transports. Extra copper doping during the nanocrystal synthesis introduces a significant improvement in the performance. PMID:22214524

  20. Challenges for the Development of New Non-Toxic Antifouling Solutions

    Directory of Open Access Journals (Sweden)

    Jean-Philippe Maréchal

    2009-10-01

    Full Text Available Marine biofouling is of major economic concern to all marine industries. The shipping trade is particularly alert to the development of new antifouling (AF strategies, especially green AF paint as international regulations regarding the environmental impact of the compounds actually incorporated into the formulations are becoming more and more strict. It is also recognised that vessels play an extensive role in invasive species propagation as ballast waters transport potentially threatening larvae. It is then crucial to develop new AF solutions combining advances in marine chemistry and topography, in addition to a knowledge of marine biofoulers, with respect to the marine environment. This review presents the recent research progress made in the field of new non-toxic AF solutions (new microtexturing of surfaces, foul-release coatings, and with a special emphasis on marine natural antifoulants as well as the perspectives for future research directions.

  1. Nontoxic and abundant copper zinc tin sulfide nanocrystals for potential high-temperature thermoelectric energy harvesting.

    Science.gov (United States)

    Yang, Haoran; Jauregui, Luis A; Zhang, Genqiang; Chen, Yong P; Wu, Yue

    2012-02-01

    Improving energy/fuel efficiency by converting waste heat into electricity using thermoelectric materials is of great interest due to its simplicity and reliability. However, many thermoelectric materials are composed of either toxic or scarce elements. Here, we report the experimental realization of using nontoxic and abundant copper zinc tin sulfide (CZTS) nanocrystals for potential thermoelectric applications. The CZTS nanocrystals can be synthesized in large quantities from solution phase reaction and compressed into robust bulk pellets through spark plasma sintering and hot press while still maintaining nanoscale grain size inside. Electrical and thermal measurements have been performed from 300 to 700 K to understand the electron and phonon transports. Extra copper doping during the nanocrystal synthesis introduces a significant improvement in the performance.

  2. Spatial contrast sensitivity in benign intracranial hypertension.

    Science.gov (United States)

    Bulens, C; Meerwaldt, J D; Koudstaal, P J; Van der Wildt, G J

    1988-01-01

    Spatial Contrast Sensitivity (CS) was studied in 20 patients with benign intracranial hypertension (BIH). At presentation CS loss was found in 43% of the eyes, and impairment of visual acuity attributed to BIH in only 16%. Nine patients had blurred vision or visual obscurations, all of whom had abnormal CS. The clinical application of CS measurement in BIH for monitoring the progression or regression of the disease is illustrated by serial measurements in 11 patients. Progressive visual loss in longstanding papilloedema and improvement of visual function in subsiding papilloedema can occur without any change in Snellen acuity or visual field charting. PMID:3225588

  3. Laser Applications for Benign Prostate Hyperplasia

    Directory of Open Access Journals (Sweden)

    Akyüz O.

    2012-02-01

    Full Text Available Transurethral prostate resection is still accepted as golden standard treatment modality for the management of benign prostate hyperplasia (BPH. Laser represents the most promising option among the minimal invasive alternatives. Laser with different wavelengths can provide coagulation, enucleation or vaporization on the target tissues. The significant advantages of laser applications are lesser complication rates of mainly retrograde ejaculation and erectile dysfunction, shorter hospitalization and catheterization times, and applicability in patients on anticoagulant treatment. However, further randomized multicenter trials are certainly required for laser to become a candidate for golden standard treatment for BPH.

  4. Endoscopic management of benign biliary strictures

    Institute of Scientific and Technical Information of China (English)

    Kavel; H; Visrodia; James; H; Tabibian; Todd; H; Baron

    2015-01-01

    Endoscopic management of biliary obstruction has evolved tremendously since the introduction of flexible fiberoptic endoscopes over 50 years ago. For the last several decades, endoscopic retrograde cholangiopancreatography(ERCP) has become established as the mainstay for definitively diagnosing and relieving biliary obstruction. In addition, and more recently, endoscopic ultrasonography(EUS) has gained increasing favor as an auxiliary diagnostic and therapeutic modality in facilitating decompression of the biliary tree. Here, we provide a review of the current and continually evolving role of gastrointestinal endoscopy, including both ERCP and EUS, in the management of biliary obstruction with a focus on benign biliary strictures.

  5. Spatial contrast sensitivity in benign intracranial hypertension.

    Science.gov (United States)

    Bulens, C; Meerwaldt, J D; Koudstaal, P J; Van der Wildt, G J

    1988-10-01

    Spatial Contrast Sensitivity (CS) was studied in 20 patients with benign intracranial hypertension (BIH). At presentation CS loss was found in 43% of the eyes, and impairment of visual acuity attributed to BIH in only 16%. Nine patients had blurred vision or visual obscurations, all of whom had abnormal CS. The clinical application of CS measurement in BIH for monitoring the progression or regression of the disease is illustrated by serial measurements in 11 patients. Progressive visual loss in longstanding papilloedema and improvement of visual function in subsiding papilloedema can occur without any change in Snellen acuity or visual field charting.

  6. Benign symmetric lipomatosis of the knees

    Institute of Scientific and Technical Information of China (English)

    Zhiqiang Yin; Di Wu; Yixin Ge; Meihua Zhang; Zhigang Bi; Dan Luo

    2008-01-01

    Benign symmetric lipomatosis(BSL) is a rare disease characterized by the presence of multiple, symmetric and nonencapsulated fat masses in the face, neck and other areas. It is commonly seen in middle-aged Caucasian Mediterranean males, while its etiology is still not clear. The majority of the patients with BSL have a history of alcohol abuse and hepatopathy. BSL of the limbs is very rare. This article reports a unique case of a 60-year-old Chinese woman with involvement of the knees confirmed by the results of magnetic resonance imaging(MRI) and histopathology, which was not described previously in published literatures.

  7. Clarithromycin Culprit of Benign Intracranial Hypertension

    Directory of Open Access Journals (Sweden)

    Habib Rehman Khan

    2015-01-01

    Full Text Available Benign intracranial hypertension is characterized with increase in CSF opening pressure with no specific etiology. It is predominantly found in women of child bearing age and particularly in individuals with obesity. Visual disturbances or loss and associated headaches are common and can lead to blindness if left untreated. Diagnosis can be achieved once other causes of visual loss, headaches and high opening pressures are excluded. Management consists of serial optic disc assessments although no specific treatment is available despite recent trials using carbonic anhydrase inhibitors. Diet modification and weight management can help in therapy.

  8. Benign intracranial hypertension diagnosed with bilateral papilloedema

    Directory of Open Access Journals (Sweden)

    K. C. Phillips

    2013-12-01

    Full Text Available This article presents a case of benign intracranial hypertension (BIH diagnosed from the presence of papilloedema. This potentially sight-threatening condition particularly affects younger obese females and can be idiopathic, caused by adverse reaction to certain prescription medications or by systemic disease. Prompt treatment is essentialto avoid optic atrophy and low energy diet and exercise forms part of long-term treatment to avoid relapse. Optometrists can play a critical primary health care role in the detection of papilloedema and referring appropriately.

  9. OTC tamsulosin for benign prostatic hyperplasia.

    Science.gov (United States)

    2010-10-01

    Earlier this year, tamsulosin, an alpha blocker previously only available on prescription, became available for sale by pharmacists as a treatment for functional symptoms of benign prostatic hyperplasia (BPH) in men aged 45-75 years (Flomax Relief MR - Boehringer Ingelheim). A television advert for the over-the-counter (OTC) product claims that it is a "simple and effective" treatment that can relieve symptoms within 1 week, allowing the user to "take control of your annoying pee problems".¹ Here we review the evidence on tamsulosin and assess whether its availability as an OTC product confers worthwhile advantages. PMID:20926447

  10. Benign cementoblastoma (true cementoma in a cat

    Directory of Open Access Journals (Sweden)

    Lenin A Villamizar-Martinez

    2016-01-01

    Full Text Available Case summary A 10-year-old castrated male domestic shorthair cat was presented for assessment of a gingival mass surrounding the left maxillary third and fourth premolar teeth. The mass was surgically removed by means of a marginal rim excision, and the tissue was submitted for histological assessment. It was identified as a benign cementoblastoma (true cementoma. There was proliferation of mineralized eosinophilic material with multiple irregularly placed lacunae and reversal lines, reminiscent of cementum. The cat recovered uneventfully from the anesthesia, and there was no evidence of tumor recurrence 6 months after surgery. Relevance and novel information Cementoblastomas (true cementomas in domestic animals are rare, with just a few reports in ruminants, monogastric herbivores and rodents. Cementoblastoma is considered a benign tumor that arises from the tooth root. The slow, expansive and constant growth that characterizes these masses may be accompanied by signs of oral discomfort and dysphagia. This case report is intended to increase knowledge regarding this tumor in cats and also highlights the importance of complete excision of the neoplasm. To our knowledge, there are no previous reports in the literature of cementoblastoma in the cat.

  11. Histiocytic sarcoma that mimics benign histiocytosis.

    Science.gov (United States)

    Boisseau-Garsaud, A M; Vergier, B; Beylot-Barry, M; Nastasel-Menini, F; Dubus, P; de Mascarel, A; Eghbali, H; Beylot, C

    1996-06-01

    A 28-year-old man presented with a histiocytic sarcoma of a very uncommon origin, as it had developed for several years like a benign cutaneous histiocytosis resembling generalized eruptive histiocytoma before becoming acute, with nodal and massive pulmonary involvement. Despite various chemotherapies, the patient died within 8 months. Skin biopsies showed histiocytic proliferation in the dermis and node biopsies showed histiocytic proliferation with a sinusoidal pattern. Immunohistochemical analysis, performed on paraffin-embedded sections, demonstrated strong labeling of tumoral cells for CD68 and moderate labeling for CD3 and CD4. CD30 labeling was negative. S-100 protein was positive on a Langerhans' cell reactive subpopulation. Electron microscopy confirmed the histiocytic nature of malignant cells and showed cytoplasmic inclusions such as regularly laminated bodies, dense bodies and pleomorphic inclusions. No Birbeck granules were seen. A gene rearrangement study of T-cell receptor gamma and immunoglobulin heavy chain genes showed a germline configuration. Histiocytic sarcoma is an extremely rare true histiocytic malignancy, the existence of which has been recently debated since it has often been mistaken in the past for large cell lymphomas. Such a deceptive onset as benign cutaneous histiocytosis has not been described in the literature to our knowledge. PMID:8793665

  12. CT evaluation of primary benign retroperitoneal tumor

    Energy Technology Data Exchange (ETDEWEB)

    Hayasaka, Kazumasa; Yamada, Tomonori; Saitoh, Yasuhiro; Yoshikawa, Daihei; Aburano, Tamio; Hashimoto, Hiroshi; Yachiku, Sunao (Asahikawa Medical Coll., Hokkaido (Japan))

    We studied CT patterns in 21 cases of primary benign retroperitoneal tumor including teratoma in nine cases, schwannoma in six, leiomyoma in three, lipoma in one, lymphangioma in one, and neurofibroma in one. The tumors were analyzed for size, internal homogeneity, CT density, calcification, border with neighboring organs, and contrast enhancement (CE). The mean diameter of the tumors was 10.2 ([+-]4.8) cm. Internal homogeneous distribution was observed in 33%, calcification in 43%, and well-defined border in 86%. The CT density and calcification were compared according to histology, and the results were as follows: teratoma showed fat density in 78%, water density in 100%, and calcification in 89%; schwannoma showed water density in 100% and septal CE in 33%; leiomyoma showed soft tissue density in 100%, CE in 100%, and water density in 33%; lipoma showed fat density and calcification; and lymphangioma and neurofibroma showed water density. Internal homogeneity, fat density, cyst formation, and calcification are considered to be important predictors of primary benign retroperitoneal tumor on CT. (author).

  13. Histiocytic sarcoma that mimics benign histiocytosis.

    Science.gov (United States)

    Boisseau-Garsaud, A M; Vergier, B; Beylot-Barry, M; Nastasel-Menini, F; Dubus, P; de Mascarel, A; Eghbali, H; Beylot, C

    1996-06-01

    A 28-year-old man presented with a histiocytic sarcoma of a very uncommon origin, as it had developed for several years like a benign cutaneous histiocytosis resembling generalized eruptive histiocytoma before becoming acute, with nodal and massive pulmonary involvement. Despite various chemotherapies, the patient died within 8 months. Skin biopsies showed histiocytic proliferation in the dermis and node biopsies showed histiocytic proliferation with a sinusoidal pattern. Immunohistochemical analysis, performed on paraffin-embedded sections, demonstrated strong labeling of tumoral cells for CD68 and moderate labeling for CD3 and CD4. CD30 labeling was negative. S-100 protein was positive on a Langerhans' cell reactive subpopulation. Electron microscopy confirmed the histiocytic nature of malignant cells and showed cytoplasmic inclusions such as regularly laminated bodies, dense bodies and pleomorphic inclusions. No Birbeck granules were seen. A gene rearrangement study of T-cell receptor gamma and immunoglobulin heavy chain genes showed a germline configuration. Histiocytic sarcoma is an extremely rare true histiocytic malignancy, the existence of which has been recently debated since it has often been mistaken in the past for large cell lymphomas. Such a deceptive onset as benign cutaneous histiocytosis has not been described in the literature to our knowledge.

  14. Benign Paroxysmal Positional Vertigo After Nonotologic Surgery: Case Series

    OpenAIRE

    Kansu, Leyla; Aydin, Erdinc; Gulsahi, Kamran

    2012-01-01

    Benign paroxysmal positional vertigo is one of the most common types of vertigo caused by peripheral vestibular dysfunction. Although head trauma, migraine, long-term bed rest, Ménière disease, viral labyrinthitis, and upper respiratory tract infections are believed to be predisposing factors, most cases of benign paroxysmal positional vertigo are idiopathic. Ear surgery is another cause, but after non-otologic surgery, attacks of benign paroxysmal positional vertigo are rare. We describe thr...

  15. The determination of Q192R polymorphism of paraoxonase 1 by using non-toxic substrate p-nitrophenylacetate

    Directory of Open Access Journals (Sweden)

    M R Mogarekar

    2013-01-01

    Conclusion: The Q192R polymorphism of PON1 by using non-toxic substrate p-nitrophenylacetate showed trimodal distribution of QQ (homozygous, QR (heterozygous, and RR (homozygous phenotype and it is comparable with reference method. This method can be used for PON1 phenotype in different pathological and complex disease conditions.

  16. Radioimmune methods application to determining the functional state of STH-IGF-1 in adolescent boys with diffuse nontoxic goiter

    International Nuclear Information System (INIS)

    The purpose of the study was to investigate the character of production of somatotropic hormone (STH) and insulin-like growth factor 1 in adolescent boys with diffuse nontoxic goiter. Blood serum STH, IGF-1, thyrotropin, thyroxin, triiodothyronine, testosterone, and estradiole level were investigated in 131 boys aged 14-17 with DNG using radioimmune method.

  17. Benign and malignant tumors of the foot and ankle

    International Nuclear Information System (INIS)

    Pain and focal masses in the foot and ankle are frequently encountered and often initiate a workup including imaging. It is important to differentiate benign lesions from aggressive benign or malignant lesions. In this review, multiple examples of osseous and soft tissue tumors of the foot and ankle will be presented. Additionally, the compartmental anatomy of the foot and ankle will be discussed in terms of its relevance for percutaneous biopsy planning and eventual surgery. Finally, a general overview of the surgical management of benign, benign aggressive and malignant tumors of the foot and ankle will be discussed. (orig.)

  18. Benign and malignant tumors of the foot and ankle

    Energy Technology Data Exchange (ETDEWEB)

    Singer, Adam D.; Datir, Abhijit; Langley, Travis [Emory University Hospital, Department of Radiology, Section of Musculoskeletal Imaging, Atlanta, GA (United States); Tresley, Jonathan [University of Wisconsin, Department of Radiology, Madison, WI (United States); Clifford, Paul D.; Jose, Jean; Subhawong, Ty K. [University of Miami, Department of Radiology, Miami, FL (United States)

    2016-03-15

    Pain and focal masses in the foot and ankle are frequently encountered and often initiate a workup including imaging. It is important to differentiate benign lesions from aggressive benign or malignant lesions. In this review, multiple examples of osseous and soft tissue tumors of the foot and ankle will be presented. Additionally, the compartmental anatomy of the foot and ankle will be discussed in terms of its relevance for percutaneous biopsy planning and eventual surgery. Finally, a general overview of the surgical management of benign, benign aggressive and malignant tumors of the foot and ankle will be discussed. (orig.)

  19. Clustered microcalcifications without mass on mammography : benignancy vs. malignancy

    Energy Technology Data Exchange (ETDEWEB)

    Han, Yoon Hee; Do, Young Soo; Oh, Hoon Il; Kim, Ki Hwan; Chin, Soo Yil [Korean Cancer Center Hostpital, Seoul (Korea, Republic of); Cho, Byung Jae [Chung Dam Radiologic Clinics, Seoul (Korea, Republic of); Han, Heon [Chungang Gil Hospital, Seoul (Korea, Republic of); Choi, Yeun Hyeun; Han, Boo Kyung [Sam Sung Medical Center, Seoul (Korea, Republic of); Park, Jung Mi [Asan Medical Center, Seoul (Korea, Republic of)

    1996-11-01

    The purpose of this study is to evaluate the accuracy of differentiation between benign and malignant clustered microcalcifications without mass on mammogram. Fourty six mammograms of 44 patients showing clustered microcalcifications without mass were interpreted blindly by five independent observers majoring in breast imaging from different institutions. Twenty two were malignant (10 infiltrating ductal carcinomas, 12 intraductal carcinomas) and 24 were benign (all fibrocystic disease). The observers judge benignancy or malignancy of microcalcifications. The authors assess the accuracy of differential diagnosis of clustered microcalcifications. Of 24 cases proved benign microcalcifications, five radiologists correctly interpreted 20 on average as benign and of malignant 22 cases, 16 on average were correctly interpreted as malignant. The diagnostic accuracy of malignant microcalcifications was 71.8% on average(63.6%{approx}81.8%) and the diagnostic accuracy for benign microcalcifications was 83% on average(71%{approx}92%). It was 9 among total 46 cases that were misinterpreted by more than three radiologists. Among these 9 cases, malignant microcalcifications that had been misinterpreted as benign were seven, benign microcalcifications misinterpreted as malignant were two. The diagnostic accuracy of clustered malignant microcalcifications(71.8%) without mass on mammogram was lower than that of benign microcalcifications(83.3%). So, in case of suspected malignant microcalcification on mammogram, it is preferable that along with magnification view, histopathologic confirmation by core biopsy must be obtained.

  20. Green biodiesel production from waste cooking oil using an environmentally benign acid catalyst.

    Science.gov (United States)

    Tran, Thi Tuong Vi; Kaiprommarat, Sunanta; Kongparakul, Suwadee; Reubroycharoen, Prasert; Guan, Guoqing; Nguyen, Manh Huan; Samart, Chanatip

    2016-06-01

    The application of an environmentally benign sulfonated carbon microsphere catalyst for biodiesel production from waste cooking oil was investigated. This catalyst was prepared by the sequential hydrothermal carbonization and sulfonation of xylose. The morphology, surface area, and acid properties were analyzed. The surface area and acidity of the catalyst were 86m(2)/g and 1.38mmol/g, respectively. In addition, the presence of sulfonic acid on the carbon surface was confirmed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The catalytic activity was tested for biodiesel production from waste cooking oil via a two-step reaction to overcome reaction equilibrium. The highest biodiesel yield (89.6%) was obtained at a reaction temperature of 110°C, duration time of 4h, and catalyst loading of 10wt% under elevated pressure 2.3bar and 1.4bar for first and second step, respectively. The reusability of the catalyst was investigated and showed that the biodiesel yield decreased by 9% with each cycle; however, this catalyst is still of interest because it is an example of green chemistry, is nontoxic, and makes use of xylose waste.

  1. Green biodiesel production from waste cooking oil using an environmentally benign acid catalyst.

    Science.gov (United States)

    Tran, Thi Tuong Vi; Kaiprommarat, Sunanta; Kongparakul, Suwadee; Reubroycharoen, Prasert; Guan, Guoqing; Nguyen, Manh Huan; Samart, Chanatip

    2016-06-01

    The application of an environmentally benign sulfonated carbon microsphere catalyst for biodiesel production from waste cooking oil was investigated. This catalyst was prepared by the sequential hydrothermal carbonization and sulfonation of xylose. The morphology, surface area, and acid properties were analyzed. The surface area and acidity of the catalyst were 86m(2)/g and 1.38mmol/g, respectively. In addition, the presence of sulfonic acid on the carbon surface was confirmed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The catalytic activity was tested for biodiesel production from waste cooking oil via a two-step reaction to overcome reaction equilibrium. The highest biodiesel yield (89.6%) was obtained at a reaction temperature of 110°C, duration time of 4h, and catalyst loading of 10wt% under elevated pressure 2.3bar and 1.4bar for first and second step, respectively. The reusability of the catalyst was investigated and showed that the biodiesel yield decreased by 9% with each cycle; however, this catalyst is still of interest because it is an example of green chemistry, is nontoxic, and makes use of xylose waste. PMID:27053375

  2. Management of benign prostatic hyperplasia with silodosin

    Directory of Open Access Journals (Sweden)

    Tomonori Yamanishi

    2009-08-01

    Full Text Available Tomonori Yamanishi1, Tomoya Mizuno1, Takao Kamai1, Ken-ichiro Yoshida1, Ryuji Sakakibara2, Tomoyuki Uchiyama31Department of Urology, Dokkyo Medical University, Tochigi, Japan; 2Department of Neurology, Sakura Hospital, Toho University, Toho, Japan; 3Department of Neurology, Chiba University, Chiba, JapanAbstract: It has been reported that blockade of α1A-adrenoceptor (AR relieves bladder outlet obstruction, while blockade of α1D-AR is believed to alleviate storage symptoms due to detrusor overactivity. Silodosin, (--1-(3-hydroxypropyl-5-[(2R-2-({2-[2-(2,2,2trifluoroethoxy phenoxy]ethyl}aminopropyl]-2,3-dihydro-1H-indole-7- carboxamide, is a new α1A-AR selective antagonist. Silodosin is highly selective for the α1A-AR subtype, showing an affinity for the α1A-AR that is 583- and 55.5-fold higher than its affinity for the α1B- and α1D-ARs, respectively. In randomized, double-blind, placebo-controlled phase III studies performed in Japan and the United States, silodosin has been shown to be effective for both storage and voiding symptoms associated with benign prostatic hyperplasia. Early effects of silodosin (after 2–6 hours or day 1 on lower urinary tract symptoms have also been reported. In urodynamic studies, detrusor overactivity disappeared in 40% and improved in 35% of patients after administration. In pressure flow studies, the grade of obstruction on the International Continence Society nomogram showed improvement in 56% of patients. The rate of adverse events in the silodosin, tamsulosin and placebo groups was 88.6%, 82.3%, and 71.6%, respectively. The most common adverse event was (mostly mild abnormal ejaculation (28.1%. However, few patients (2.8% discontinued silodosin because of abnormal ejaculation. Orthostatic hypotension showed a similar incidence in the silodosin (2.6% and placebo (1.5% groups. In conclusion, silodosin improves detrusor overactivity and obstruction and thus may be effective for both storage and voiding

  3. Radioiodine therapy in benign thyroid diseases

    DEFF Research Database (Denmark)

    Bonnema, Steen Joop; Hegedüs, Laszlo

    2012-01-01

    from (131)I therapy. The individual radiosensitivity, still poorly defined and impossible to quantify, may be a major determinant of the outcome from (131)I therapy. Above all, the impact of (131)I therapy relies on the iodine-concentrating ability of the thyroid gland. The thyroid (131)I uptake (or......Radioiodine ((131)I) therapy of benign thyroid diseases was introduced 70 yr ago, and the patients treated since then are probably numbered in the millions. Fifty to 90% of hyperthyroid patients are cured within 1 yr after (131)I therapy. With longer follow-up, permanent hypothyroidism seems...... of an exact thyroid dose is error-prone due to imprecise measurement of the (131)I biokinetics, and the importance of internal dosimetric factors, such as the thyroid follicle size, is probably underestimated. Besides these obstacles, several potential confounders interfere with the efficacy of (131)I therapy...

  4. Endoscopic management of benign biliary strictures.

    Science.gov (United States)

    Rustagi, Tarun; Jamidar, Priya A

    2015-01-01

    Benign biliary strictures are a common indication for endoscopic retrograde cholangiopancreatography (ERCP). Endoscopic management has evolved over the last 2 decades as the current standard of care. The most common etiologies of strictures encountered are following surgery and those related to chronic pancreatitis. High-quality cross-sectional imaging provides a road map for endoscopic management. Currently, sequential placement of multiple plastic biliary stents represents the preferred approach. There is an increasing role for the treatment of these strictures using covered metal stents, but due to conflicting reports of efficacies as well as cost and complications, this approach should only be entertained following careful consideration. Optimal management of strictures is best achieved using a team approach with the surgeon and interventional radiologist playing an important role.

  5. Palladium-Catalyzed Environmentally Benign Acylation.

    Science.gov (United States)

    Suchand, Basuli; Satyanarayana, Gedu

    2016-08-01

    Recent trends in research have gained an orientation toward developing efficient strategies using innocuous reagents. The earlier reported transition-metal-catalyzed carbonylations involved either toxic carbon monoxide (CO) gas as carbonylating agent or functional-group-assisted ortho sp(2) C-H activation (i.e., ortho acylation) or carbonylation by activation of the carbonyl group (i.e., via the formation of enamines). Contradicting these methods, here we describe an environmentally benign process, [Pd]-catalyzed direct carbonylation starting from simple and commercially available iodo arenes and aldehydes, for the synthesis of a wide variety of ketones. Moreover, this method comprises direct coupling of iodoarenes with aldehydes without activation of the carbonyl and also without directing group assistance. Significantly, the strategy was successfully applied to the synthesis n-butylphthalide and pitofenone. PMID:27377566

  6. Climatic variations and benign paroxysmal positional vertigo

    Institute of Scientific and Technical Information of China (English)

    Basil M.N. Saeed; Alyaa Farouk Omari

    2016-01-01

    Benign paroxysmal positional vertigo (BPPV) is probably the most common diagnosis at vertigo clinics. Seasonal cycles of several human illnesses could be attributed variously to changes in atmospheric or weather conditions. In this retrospective study, patients with BPPV from January 2010 to December 2012 were studied, and their charts were reviewed. Statistical analysis revealed a statistically significant difference in patients' numbers among different months of the year. Also there is a significant statistical correlation between the numbers of patients with climatic variations especially the temperature. The present paper discusses the possible explanations for these results which confirms the seasonal variations in BPPV, together with a review of literature to view the possible associations with other disorders that causes such sea-sonality.

  7. A rare benign parotid gland tumor: angiomyolipoma.

    Science.gov (United States)

    Lu, Dan; Yang, Hui; Liu, Shi Xi; Zhao, Yu; Chen, Fei

    2013-11-01

    Angiomyolipomas are benign neoplasms composed of smooth muscle, vasculature, and mature adipose tissue, which most commonly occur in the kidney and located in the head and neck region. A very rare neoplasm, there are only 3 cases of angiomyolipoma in the parotid gland that have been reported to date. Here, we report a case of a 38-year-old man who had a slow-growing mass in the parotid gland for the past 7 years. The results of a physical examination revealed a rubbery mass that was 2.5 cm in diameter in the below superficial lobe of the left parotid gland. A computed tomographic scan showed a heterogeneous and lobulated nodule with a well-defined margin, which was resected through partial parotidectomy with preservation of the facial nerve. A histologic finding revealed an angiomyolipoma of the parotid gland. In conclusion, angiomyolipoma should be considered in the differential diagnosis of rubbery parotid gland masses.

  8. [Endoscopic surgery for benign esophageal diseases].

    Science.gov (United States)

    Ozawa, Soji

    2006-07-01

    Gastroesophageal reflux disease (GERD) and esophageal achalasia are common benign esophageal diseases. Today minimally invasive surgery is recommended to treat these diseases. Surgical indications for GERD are failure of medical management, medical complications attributable to a large hiatal hernia, 'atypical' symptoms (asthma, hoarseness, cough, chest pain, aspiration), etc. according to the Society of American Gastrointestinal Endoscopic Surgeons (SAGES) guidelines. Laparoscopic Nissen fundoplication has emerged as the most widely accepted procedure for GERD patients with normal esophageal motility. Partial fundoplication (e.g., Toupet fundoplication) is also considered to decrease the possibility of postoperative dysphagia. Although pneumatic dilatation has been the first line treatment for esophageal achalasia, laparoscopic Heller myotomy and partial fundoplication (e.g., Dor fundoplication) to prevent reflux is preferred by most gastroenterologists and surgeons as the primary treatment modality. Laparoscopic surgery for GERD and esophageal achalasia are effective in most patients and safe in all patients. Finally, laparoscopic surgery should be performed only by skilled surgeons.

  9. The radiation therapy of benign diseases

    International Nuclear Information System (INIS)

    X-ray should only be applied when other forms of treatment of good-natured diseases do not provide equally good results. One should note that somatic lesion should be completely avoided and genetic lesion avoided to the greatest probability. One can distinguish according to ones aims between inflammation irradiation, pain irradiation, stimulation therapy and functional therapy. An indication for inflammation irradiation can be post-operative parotitis, furuncle in the face, mastitis puerperalis, panaritium ossale, recurrent sudoriparouns abscesses and repelling reactions after transplanting organs. Pain irradiation is indicated with degenerative diseases of the skeleton system. A further possible application is radiotherapy of hypotrophic processes and benign tumours. Functional radiotherapy is indicated with hyperendocrinism, neurovegetative disorders and allergies. (MG)

  10. Insights from radiation treatment for benign disease

    Energy Technology Data Exchange (ETDEWEB)

    Bleehen, N.M.

    1987-08-29

    This note compares mortality figures for patients treated with low dose ionizing radiation for benign conditions between the 1920's and 1950's with figures available from the Japanese A-bomb survivors. X radiation for ringworm, ankylosing spondylitis and post-partum mastitis are considered. Figures for leukemia are roughly comparable between radiotherapy groups and A-bomb survivors. Figures for the increased relative risk of breast cancer in spondylitis patients were in marked contrast to bomb survivors who received comparable doses, but compatible with the increase among women given x-rays for acute post-partum mastitis in the 1940's and 1950's. This study also suggests the possibility of different time patterns of risk between different cancers. (U.K.).

  11. Insights from radiation treatment for benign disease

    International Nuclear Information System (INIS)

    This note compares mortality figures for patients treated with low dose ionizing radiation for benign conditions between the 1920's and 1950's with figures available from the Japanese A-bomb survivors. X radiation for ringworm, ankylosing spondylitis and post-partum mastitis are considered. Figures for leukemia are roughly comparable between radiotherapy groups and A-bomb survivors. Figures for the increased relative risk of breast cancer in spondylitis patients were in marked contrast to bomb survivors who received comparable doses, but compatible with the increase among women given x-rays for acute post-partum mastitis in the 1940's and 1950's. This study also suggests the possibility of different time patterns of risk between different cancers. (U.K.)

  12. [Benign thyroid nodules: diagnostic and therapeutic approach].

    Science.gov (United States)

    Durante, Cosimo; Cava, Francesco; Paciaroni, Alessandra; Filetti, Sebastiano

    2008-05-01

    In the last years an increase in thyroid nodules detection has been reported from several epidemiological studies. This trend is largely due to the routine use of diagnostic sonography procedures in clinical practice. Thyroid nodules, both palpable or not palpable, rarely turn out to be malignant. Fine-needle aspiration cytology (FNAc) plays a central role in establishing the nature of the nodule. Excluded the presence of malignant lesions, which are generally treated with surgery, physicians are faced with a variety of therapeutic options, and choosing the optimal approach can be a difficult task. These include a periodic follow-up alone without treatment, the iodine supplementation, the thyroid-hormone suppressive therapy, the radioiodine administration, the percutaneous ethanol injections, and the new technique of laser photocoagulation. In all cases, decisions on the management of benign thyroid nodules should always be based on clinical target and a careful analysis of benefits and risks to the patient. PMID:18581970

  13. A rare case of benign omentum teratoma

    Directory of Open Access Journals (Sweden)

    Sforza Marcos

    2012-01-01

    Full Text Available Introduction. Mature teratomas (benign cystic teratomas or dermoid cysts are among the most common ovarian tumours; however, teratomas of the omentum and mesentery are extremely rare. Teratoma in the intraperitoneal cavity is uncommon and atypical, and it is even more uncommon in adulthood. Case Outline. An 82-year-old female was admitted to our department with clinical signs of abdominal tumour. The ultrasound scan and preoperative laboratory tests were done. Explorative laparotomy revealed tumour with torsion on its pedicle at the greater omentum. After removal of the mass and the incision a tooth and hair were found, characteristics of teratoma. Conclusion. The excision was very effective and also definitive treatment for this case. The patient recovered well and was discharged 3 days later. The patient probably carried the tumour all her life asymptomatically until admission.

  14. Benign Duodenocolic Fistula: a Case Report

    Directory of Open Access Journals (Sweden)

    Marzieh Soheili

    2015-10-01

    Full Text Available Benign duodenocolic fistula (DCF, known as a fistula between the duodenum and colon with orwithout cecum of nonmalignant origin, is an unusual complication of different gastrointestinal diseases. Thepresent paper records a case in which the patient presented with chronic diarrhea, abdominal pain, weight lossas well as having a history of gastric ulcer. Most frequently the condition presents with signs ofmalabsorption such as weight loss and diarrhea, but other symptoms include nausea, vomiting (sometimeswith fecal, and abdominal pain. Gastrointestinal inflammatory conditions are the usual causes. The mostcommon ones are perforated duodenal ulcer and Crohn’s disease. Barium enemas are usually diagnostic.Treatment consists of excising the fistula and repairing the duodenal and colonic defects. Closure of thefistula provides quick relief.

  15. The debate over robotics in benign gynecology.

    Science.gov (United States)

    Rardin, Charles R

    2014-05-01

    The debate over the role of the da Vinci surgical robotic platform in benign gynecology is raging with increasing fervor and, as product liability issues arise, greater financial stakes. Although the best currently available science suggests that, in the hands of experts, robotics offers little in surgical advantage over laparoscopy, at increased expense, the observed decrease in laparotomy for hysterectomy is almost certainly, at least in part, attributable to the availability of the robot. In this author's opinion, the issue is not whether the robot has any role but rather to define the role in an institutional environment that also supports the safe use of vaginal and laparoscopic approaches in an integrated minimally invasive surgery program. Programs engaging robotic surgery should have a clear and self-determined regulatory process and should resist pressures in place that may preferentially support robotics over other forms of minimally invasive surgery.

  16. Benign meningiomas: primary treatment selection affects survival

    International Nuclear Information System (INIS)

    Purpose: To examine the effect of primary treatment selection on outcomes for benign intracranial meningiomas at the University of Florida. Methods and Materials: For 262 patients, the impact of age, Karnofsky performance status, pathologic features, tumor size, tumor location, and treatment modality on local control and cause-specific survival was analyzed (minimum potential follow-up, 2 years; median follow-up, 8.2 years). Extent of surgery was classified by Simpson grade. Treatment groups: surgery alone (n = 229), surgery and postoperative radiotherapy (RT) (n = 21), RT alone (n = 7), radiosurgery alone (n = 5). Survival analysis: Kaplan-Meier method with univariate and multivariate analysis. Results: At 15 years, local control was 76% after total excision (TE) and 87% after subtotal excision plus RT (SE+RT), both significantly better (p = 0.0001) than after SE alone (30%). Cause-specific survival at 15 years was reduced after treatment with SE alone (51%), compared with TE (88%) or SE+RT (86%) (p = 0.0003). Recurrence after primary treatment portended decreased survival, independent of initial treatment group or salvage treatment selection (p = 0.001). Atypical pathologic features predicted reduced 15-year local control (54 vs. 71%) and cause-specific survival rates (57 vs. 86%). Multivariate analysis for cause-specific survival revealed treatment group (SE vs. others; p = 0.0001), pathologic features (atypical vs. typical; p = 0.0056), and Karnofsky performance status (≥80 vs. <80; p = 0.0153) as significant variables. Conclusion: Benign meningiomas are well managed by TE or SE+RT. SE alone is inadequate therapy and adversely affects cause-specific survival. Atypical pathologic features predict a poorer outcome, suggesting possible benefit from more aggressive treatment. Because local recurrence portends lower survival rates, primary treatment choice is important

  17. Deferiprone, a non-toxic reagent for determination of iron in samples via sequential injection analysis

    Science.gov (United States)

    Pragourpun, Kraivinee; Sakee, Uthai; Fernandez, Carlos; Kruanetr, Senee

    2015-05-01

    We present for the first time the use of deferiprone as a non-toxic complexing agent for the determination of iron by sequential injection analysis in pharmaceuticals and food samples. The method was based on the reaction of Fe(III) and deferiprone in phosphate buffer at pH 7.5 to give a Fe(III)-deferiprone complex, which showed a maximum absorption at 460 nm. Under the optimum conditions, the linearity range for iron determination was found over the range of 0.05-3.0 μg mL-1 with a correlation coefficient (r2) of 0.9993. The limit of detection and limit of quantitation were 0.032 μg mL-1 and 0.055 μg mL-1, respectively. The relative standard deviation (%RSD) of the method was less than 5.0% (n = 11), and the percentage recovery was found in the range of 96.0-104.0%. The proposed method was satisfactorily applied for the determination of Fe(III) in pharmaceuticals, water and food samples with a sampling rate of 60 h-1.

  18. Comparative gene expression in toxic versus non-toxic strains of the marine dinoflagellate Alexandrium minutum

    Directory of Open Access Journals (Sweden)

    Glöckner Gernot

    2010-04-01

    Full Text Available Abstract Background The dinoflagellate Alexandrium minutum typically produces paralytic shellfish poisoning (PSP toxins, which are known only from cyanobacteria and dinoflagellates. While a PSP toxin gene cluster has recently been characterized in cyanobacteria, the genetic background of PSP toxin production in dinoflagellates remains elusive. Results We constructed and analysed an expressed sequence tag (EST library of A. minutum, which contained 15,703 read sequences yielding a total of 4,320 unique expressed clusters. Of these clusters, 72% combined the forward-and reverse reads of at least one bacterial clone. This sequence resource was then used to construct an oligonucleotide microarray. We analysed the expression of all clusters in three different strains. While the cyanobacterial PSP toxin genes were not found among the A. minutum sequences, 192 genes were differentially expressed between toxic and non-toxic strains. Conclusions Based on this study and on the lack of identified PSP synthesis genes in the two existent Alexandrium tamarense EST libraries, we propose that the PSP toxin genes in dinoflagellates might be more different from their cyanobacterial counterparts than would be expected in the case of a recent gene transfer. As a starting point to identify possible PSP toxin-associated genes in dinoflagellates without relying on a priori sequence information, the sequences only present in mRNA pools of the toxic strain can be seen as putative candidates involved in toxin synthesis and regulation, or acclimation to intracellular PSP toxins.

  19. Wheat enolase demonstrates potential as a non-toxic cryopreservation agent for liver and pancreatic cells.

    Science.gov (United States)

    Grondin, Mélanie; Chow-Shi-Yée, Mélanie; Ouellet, François; Averill-Bates, Diana A

    2015-05-01

    Cryopreservation is essential for long-term storage of cells and tissues, which can be used for clinical applications such as drug toxicity testing, human transplantation, reproductive, regenerative and transfusion medicine. It requires use of cryoprotectants (e.g. dimethyl disulfoxide (DMSO), glycerol) that protect cells and tissues from dehydration and damage caused by formation of intracellular ice during freezing. As an alternative to these cytotoxic cryoprotectants, we are developing new technology using natural substances produced by plants that survive freezing conditions. We previously showed that soluble protein extracts such as wheat protein extract (WPE) prepared from winter wheat plants can substitute for DMSO as a cryoprotectant for certain mammalian cell types. To identify novel cryoactive proteins, WPE was separated using different chromatographic procedures and cryoactive fractions were analyzed by mass spectrometry. The analysis revealed enolase as a potential wheat protein candidate. A recombinant enolase protein was prepared and was able to successfully cryopreserve rat hepatocytes and insulin-secreting INS832/13 pancreatic cells. Post-thaw cells had high viability and levels of metabolic activities. Cryopreserved cells were plateable and had good adherence and morphological properties. These results indicate that individual plant proteins such as enolase have promising potential as new, non-toxic technology for cryopreservation protocols used for clinical applications. PMID:25740431

  20. Bound to shock: protection from lethal endotoxemic shock by a novel, nontoxic, alkylpolyamine lipopolysaccharide sequestrant.

    Science.gov (United States)

    Sil, Diptesh; Shrestha, Anurupa; Kimbrell, Matthew R; Nguyen, Thuan B; Adisechan, Ashok K; Balakrishna, Rajalakshmi; Abbo, Benjamin G; Malladi, Subbalakshmi; Miller, Kelly A; Short, Shannon; Cromer, Jens R; Arora, Shravan; Datta, Apurba; David, Sunil A

    2007-08-01

    Lipopolysaccharide (LPS), or endotoxin, a structural component of gram-negative bacterial outer membranes, plays a key role in the pathogenesis of septic shock, a syndrome of severe systemic inflammation which leads to multiple-system organ failure. Despite advances in antimicrobial chemotherapy, sepsis continues to be the commonest cause of death in the critically ill patient. This is attributable to the lack of therapeutic options that aim at limiting the exposure to the toxin and the prevention of subsequent downstream inflammatory processes. Polymyxin B (PMB), a peptide antibiotic, is a prototype small molecule that binds and neutralizes LPS toxicity. However, the antibiotic is too toxic for systemic use as an LPS sequestrant. Based on a nuclear magnetic resonance-derived model of polymyxin B-LPS complex, we had earlier identified the pharmacophore necessary for optimal recognition and neutralization of the toxin. Iterative cycles of pharmacophore-based ligand design and evaluation have yielded a synthetically easily accessible N(1),mono-alkyl-mono-homologated spermine derivative, DS-96. We have found that DS-96 binds LPS and neutralizes its toxicity with a potency indistinguishable from that of PMB in a wide range of in vitro assays, affords complete protection in a murine model of LPS-induced lethality, and is apparently nontoxic in vertebrate animal models.

  1. Nontoxic colloidal particles impede antibiotic resistance of swarming bacteria by disrupting collective motion and speed

    Science.gov (United States)

    Lu, Shengtao; Liu, Fang; Xing, Bengang; Yeow, Edwin K. L.

    2015-12-01

    A monolayer of swarming B. subtilis on semisolid agar is shown to display enhanced resistance against antibacterial drugs due to their collective behavior and motility. The dynamics of swarming motion, visualized in real time using time-lapse microscopy, prevents the bacteria from prolonged exposure to lethal drug concentrations. The elevated drug resistance is significantly reduced when the collective motion of bacteria is judiciously disrupted using nontoxic polystyrene colloidal particles immobilized on the agar surface. The colloidal particles block and hinder the motion of the cells, and force large swarming rafts to break up into smaller packs in order to maneuver across narrow spaces between densely packed particles. In this manner, cohesive rafts rapidly lose their collectivity, speed, and group dynamics, and the cells become vulnerable to the drugs. The antibiotic resistance capability of swarming B. subtilis is experimentally observed to be negatively correlated with the number density of colloidal particles on the engineered surface. This relationship is further tested using an improved self-propelled particle model that takes into account interparticle alignment and hard-core repulsion. This work has pertinent implications on the design of optimal methods to treat drug resistant bacteria commonly found in swarming colonies.

  2. In vitro regeneration from petiole explants of non-toxic Jatropha curcas

    KAUST Repository

    Kumar, Nitish

    2011-01-01

    Jatropha curcas, a multipurpose shrub has acquired significant economic potential as biodiesel plant. The seeds or pressed cake is toxic due to the presence of toxic substances and is not useful as food/fodder despite having the best protein composition. A simple, efficient, and reproducible method for plant regeneration through direct organogenesis from petiole explants of non-toxic J. curcas was developed using Murashige and Skoog (MS) medium supplemented with different concentrations of thidiazuron (TDZ). The best induction of shoot buds (57.61%), and number of shoot buds (4.98) per explant were obtained when in vitro petiole explants were placed horizontally on MS medium supplemented with 2.27 mu M TDZ. The Induced shoot buds were transferred to MS medium containing 10 mu M kinetin (Kn), 4.5 mu M 6-benzyl aminopurine (BA), and 5.5 mu M alpha-naphthaleneacetic acid (NAA) for shoot proliferation and subsequent elongation was achieved on MS medium supplemented with 2.25 mu M BA and 8.5 mu M IAA. The elongated shoots could be rooted on half-strength MS medium with 15 mu M IBA, 11.4 mu M IAA and 5.5 mu M NAA with more than 90% survival rate. (C) 2010 Elsevier B.V. All rights reserved.

  3. Construction of Nontoxic Polymeric UV-Absorber with Great Resistance to UV-Photoaging

    Science.gov (United States)

    Huang, Zhong; Ding, Aishun; Guo, Hao; Lu, Guolin; Huang, Xiaoyu

    2016-05-01

    In this article, we developed a series of new nontoxic polymeric UV-absorbers through covalently attaching a benzophenone derivative onto the main chain of poly(vinyl chloride) (PVC) via mild and quantitative click chemistry. Azide groups were firstly introduced into the backbone of PVC via a nucleophilic reaction without affecting polymeric skeleton. Copper-catalyzed Husigen-Click cycloaddition reaction was performed between the pendant azide groups of PVC and alkynyl of (2-hydroxy-4-(prop-2-ynyloxy)phenyl)(phenyl)methanone at ambient temperature for affording the desired PVC-based UV-absorbers (PVC-UV) with different amounts of benzophenone moieties, which displayed great resistance to photoaging without degradation while exposed to UV irradiation. These polymeric UV-absorbers also showed good solubilities in common organic solvents and no cytotoxicity vs. HaCat cell. Small amounts of PVC-UV were homogeneously mixed with PVC as additive for stabilizing PVC against UV-photoaging without degradation and releasing small molecule even after 200 h while keeping thermal stability. This route of polymeric additive clearly paved an efficient way for solving the puzzle of separation of small molecule additive.

  4. Large mid-esophageal granular cell tumor: benign versus malignant

    Directory of Open Access Journals (Sweden)

    Prarthana Roselil Christopher

    2015-06-01

    Full Text Available Granular cell tumors are rare soft tissue neoplasms, among which only 2% are malignant, arising from nervous tissue. Here we present a case of a large esophageal granular cell tumor with benign histopathological features which metastasized to the liver, but showing on positron emission tomography-computerized tomography standardized uptake value suggestive of a benign lesion.

  5. [Treatment of benign laryngeal diseases using a CO2 laser].

    Science.gov (United States)

    Betka, J; Klozar, J; Kasík, P; Taudy, M; Tichý, S

    1989-05-01

    CO2 laser surgery is becoming a part of larynx surgery. The authors inform about their experience in benign larynx tumours treatment. They present analysis of concrete therapeutic procedures in individual larynx affections. They conclude that laser surgery is an advantegous method for benign larynx tumours treatment. PMID:2772545

  6. Perfusion MR imaging for differentiation of benign and malignant meningiomas

    NARCIS (Netherlands)

    Zhang, Hao; Rodiger, Lars A.; Shen, Tianzhen; Miao, Jingtao; Oudkerk, Matthijs

    2008-01-01

    Introduction Our purpose was to determine whether perfusion MR imaging can be used to differentiate benign and malignant meningiomas on the basis of the differences in perfusion of tumor parenchyma and/or peritumoral edema. Methods A total of 33 patients with preoperative meningiomas (25 benign and

  7. Modern role and issues of radiation therapy for benign diseases

    Energy Technology Data Exchange (ETDEWEB)

    Miyashita, Tsuguhiro; Tateno, Atsushi; Kumazaki, Tatsuo [Nippon Medical School, Tokyo (Japan)

    1999-09-01

    Cases of radiation therapy for benign diseases have diminished in number because of recent alternative methods and knowledge about radiation carcinogenesis. In contrast to this tendency, our cases of benign diseases have recently increased. The facts made us reconsider today's radiation therapy of benign diseases. We reviewed 349 patients who were diagnosed as having benign tumors or non-neoplastic conditions and treated by radiation therapy in the past sixteen years. Analyzed items were the annual transition of treatment number, sorts of diseases, patients' age and sex, and the goal of therapy. Of all radiation therapy patients, benign diseases account for 9.26%. The annual percentages were 0.5%, 6.0%, 11.2% and 13.7% at intervals of five years since 1982. The majority was 246 post-operative irradiation for keloids (71%) and 41 pituitary adenomas (12%). Compared with malignant tumors, benign disease patients were statistically younger and female-dominant. Applications of radiation therapy in keloids and pituitary adenomas had definite goals, but were unclear in other rare diseases. Benign diseases should be treated by radiation therapy as the second or third option, provided the patients have serious symptoms and their diseases do not respond to other modalities. It seems to be widely accepted that favorite cases such as keloids and pituitary adenomas are treated by radiation therapy. But, optimal radiation therapies for other rare benign diseases have not been established. Therefore, the building of databases on radiation therapy on benign diseases should be pursued. Since benign disease patients were young and female-dominant and had many remaining years, their carcinogenicity potential should be considered. (author)

  8. Toxic and nontoxic components of botulinum neurotoxin complex are evolved from a common ancestral zinc protein

    Energy Technology Data Exchange (ETDEWEB)

    Inui, Ken [Department of Food and Cosmetic Science, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri 099-2493 (Japan); Japan Society for the Promotion of Science, 1-8 Chiyoda-ku, Tokyo 102-8472 (Japan); Sagane, Yoshimasa [Department of Food and Cosmetic Science, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri 099-2493 (Japan); Miyata, Keita [Department of Food and Cosmetic Science, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri 099-2493 (Japan); Japan Society for the Promotion of Science, 1-8 Chiyoda-ku, Tokyo 102-8472 (Japan); Miyashita, Shin-Ichiro [Department of Food and Cosmetic Science, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri 099-2493 (Japan); Suzuki, Tomonori [Department of Bacteriology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558 (Japan); Shikamori, Yasuyuki [Agilent Technologies International Japan, Ltd. Takaura-cho 9-1, Hachioji-shi, Tokyo 192-0033 (Japan); Ohyama, Tohru; Niwa, Koichi [Department of Food and Cosmetic Science, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri 099-2493 (Japan); Watanabe, Toshihiro, E-mail: t-watana@bioindustry.nodai.ac.jp [Department of Food and Cosmetic Science, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri 099-2493 (Japan)

    2012-03-16

    Highlights: Black-Right-Pointing-Pointer BoNT and NTNHA proteins share a similar protein architecture. Black-Right-Pointing-Pointer NTNHA and BoNT were both identified as zinc-binding proteins. Black-Right-Pointing-Pointer NTNHA does not have a classical HEXXH zinc-coordinating motif similar to that found in all serotypes of BoNT. Black-Right-Pointing-Pointer Homology modeling implied probable key residues involved in zinc coordination. -- Abstract: Zinc atoms play an essential role in a number of enzymes. Botulinum neurotoxin (BoNT), the most potent toxin known in nature, is a zinc-dependent endopeptidase. Here we identify the nontoxic nonhemagglutinin (NTNHA), one of the BoNT-complex constituents, as a zinc-binding protein, along with BoNT. A protein structure classification database search indicated that BoNT and NTNHA share a similar domain architecture, comprising a zinc-dependent metalloproteinase-like, BoNT coiled-coil motif and concanavalin A-like domains. Inductively coupled plasma-mass spectrometry analysis demonstrated that every single NTNHA molecule contains a single zinc atom. This is the first demonstration of a zinc atom in this protein, as far as we know. However, the NTNHA molecule does not possess any known zinc-coordinating motif, whereas all BoNT serotypes possess the classical HEXXH motif. Homology modeling of the NTNHA structure implied that a consensus K-C-L-I-K-X{sub 35}-D sequence common among all NTNHA serotype molecules appears to coordinate a single zinc atom. These findings lead us to propose that NTNHA and BoNT may have evolved distinct functional specializations following their branching out from a common ancestral zinc protein.

  9. Concanavalin A (CA) and its succinylated derivative (SCA) are nontoxic immunosuppressants of graft rejection

    Energy Technology Data Exchange (ETDEWEB)

    Hoyt, G.; DeValeria, P.; Whitehead, J.; Morris, R.

    1986-03-01

    Highly purified CA was prepared from Canavalia ensiformis by affinity chromatography and reacted with succinic anhydride to make SCA. Isoelectric focusing of CA and SCA showed 4 bands (pI 6.5-7.6) and 1 band (pI 3.6), respectively. Dose-response studies of the in vitro mitogenic (/sup 3/H-thymidne uptake) effect of CA on rat spleen cells showed a steep dose-dependent rise in lymphocyte DNA synthesis from 1..mu..g of CA/ml of culture fluid to 4..mu..g/ml with inhibition of stimulation at 8..mu..g/ml. SCA, however, stimulated maximally at 12.5..mu..g/ml with only slight inhibition at 100..mu..g/ml. The proliferation of cells exposed to CA for 72 hr was significantly greater than for cells cultured for 24 and 48 hr. When groups of rats were treated daily I.V. with CA (6 or 12 mg/kg/d) or with SCA (15 mg/kg/d) for 7 d, autopsies on day 8 revealed no gross organ pathology or substantial or consistent microscopic hematologic abnormalities. The mean survival time of LBN hearts transplanted into untreated LEW recipients was 11 +/- 1.3 d (SE). On the other hand, LBN hearts in LEW recipients treated daily I.V. (beginning 2 d pre-op) with SCA (15 mg/kd/d) or CA (3 mg/kg/d) survived a mean of 25 +/- 3 d and 32 +/- 1.5 d, respectively. Despite chronic treatment with CA or SCA, no systemic, gross pathologic or hematologic toxicity has been seen. All animals have gained weight normally post-operatively. In conclusion, they have identified 2 new apparently non-toxic immunosuppressive compounds and they have begun to correlate their known molecular differences with the differences in their immunomodulatory activity in vitro and in vivo.

  10. Toxic and nontoxic components of botulinum neurotoxin complex are evolved from a common ancestral zinc protein

    International Nuclear Information System (INIS)

    Highlights: ► BoNT and NTNHA proteins share a similar protein architecture. ► NTNHA and BoNT were both identified as zinc-binding proteins. ► NTNHA does not have a classical HEXXH zinc-coordinating motif similar to that found in all serotypes of BoNT. ► Homology modeling implied probable key residues involved in zinc coordination. -- Abstract: Zinc atoms play an essential role in a number of enzymes. Botulinum neurotoxin (BoNT), the most potent toxin known in nature, is a zinc-dependent endopeptidase. Here we identify the nontoxic nonhemagglutinin (NTNHA), one of the BoNT-complex constituents, as a zinc-binding protein, along with BoNT. A protein structure classification database search indicated that BoNT and NTNHA share a similar domain architecture, comprising a zinc-dependent metalloproteinase-like, BoNT coiled-coil motif and concanavalin A-like domains. Inductively coupled plasma-mass spectrometry analysis demonstrated that every single NTNHA molecule contains a single zinc atom. This is the first demonstration of a zinc atom in this protein, as far as we know. However, the NTNHA molecule does not possess any known zinc-coordinating motif, whereas all BoNT serotypes possess the classical HEXXH motif. Homology modeling of the NTNHA structure implied that a consensus K-C-L-I-K-X35-D sequence common among all NTNHA serotype molecules appears to coordinate a single zinc atom. These findings lead us to propose that NTNHA and BoNT may have evolved distinct functional specializations following their branching out from a common ancestral zinc protein.

  11. Transurethral electrochemical treatment of benign prostatic hyperplasia

    Institute of Scientific and Technical Information of China (English)

    张民; 龚侃; 李宁; 曾荔; 那彦群

    2003-01-01

    Objective To study the mechanism and feasibility of transurethral electrochemical therapy for the treatment of benign prostatic hyperplasia (BPH). Methods Between March 1998 and March 2000, specifically designed devices and catheters for electrochemical therapy were applied to 6 prostate specimens obtained by suprapubic prostatectomy in order to treat BPH patients with urinary retention for whom surgery was contraindicated. Sixteen patients (with a mean age of 77.3 years old) underwent electrical treatment totaling 160-220 coulombs under topical urethral anesthesia for 68-132 min. The catheters remained inside the patient for 7-10 d. Results Irreversible destructive changes occurred within cathodal tissue, while carbonization occurred within anodic tissue. The radius of tissue change was 7-8 mm and 1-2 mm, respectively. In vivo trial: 11 (69%) patients could be weaned off the catheters with satisfactory urination. Three months after therapy, the mean international prostate symptom score (IPSS) was 14.5, mean peak flow rate was 10.5 ml/s, and mean residual urine was 39 ml. No serious complications were observed. Conclusion Transurethral electrochemical treatment is potentially a minimally invasive alternative for treatment of BPH, especially for elderly patients at high risk.

  12. Benign Paroxysmal Positional Vertigo: An Integrated Perspective

    Directory of Open Access Journals (Sweden)

    Kourosh Parham

    2014-01-01

    Full Text Available Benign paroxysmal positional vertigo (BPPV, the most common cause of dizziness, occurs in all age groups. It presents with vertigo on head movement, but in older patients presentation may be typical and thus accounting for a low recognition rate in the primary care setting. It may be recurrent in up to 50% of cases. BPPV is associated with displacement of fragments of utricular otoconia into the semicircular canals, most commonly the posterior semicircular canal. Otoconia are composed of otoconin and otolin forming the organic matrix on which calcium carbonate mineralizes. Otoconia may fragment with trauma, age, or changes in the physiology of endolymph (e.g., pH and calcium concentration. Presentation varied because otoconia fragments can be displaced into any of the semicircular canals on either (or both side and may be free floating (canalolithiasis or attached to the cupula (cupulolithiasis. Most cases of BPPV are idiopathic, but head trauma, otologic disorders, and systemic disease appear to be contributory in a subset. Positional maneuvers are used to diagnose and treat the majority of cases. In rare intractable cases surgical management may be considered. A strong association with osteoporosis suggests that idiopathic BPPV may have diagnostic and management implications beyond that of a purely otologic condition.

  13. Benign encephalopathy of pregnancy. Preliminary clinical observations.

    Science.gov (United States)

    Poser, C M; Kassirer, M R; Peyser, J M

    1986-01-01

    A survey of 67 pregnancies in 51 professional women (physicians, psychologists, nurses, administrators, etc.) revealed the occurrence of symptoms of cognitive dysfunction such as forgetfulness, disorientation, confusion and reading difficulties in 28 pregnancies occurring in 21 women. These were unrelated to such factors as age of delivery, percentage weight gain, the baby's sex or birth weight, alcohol consumption, smoking, a history of migraine or allergy or other symptoms occurring during pregnancy such as sleepiness and lack of concentration, irritability, loss of interest in job or nightmares. Nor was there any correlation with hypertension, proteinuria, glycosuria, ketonuria, anemia, or morning sickness. Furthermore, these cognitive disturbances were not related to depression or sleep deprivation. Despite these symptoms, none of the women suffering from them were forced to interrupt their professional activities during pregnancy. The syndrome of benign encephalopathy of pregnancy should be recognized so that simple precautions can be taken to prevent any interference with professional or other activities. The etiology of the syndrome is unknown.

  14. Benign disease of the common bile duct.

    Science.gov (United States)

    Saxena, R; Pradeep, R; Chander, J; Kumar, P; Wig, J D; Yadav, R V; Kaushik, S P

    1988-08-01

    The incidence of common bile duct (CBD) pathology in a group of patients with benign biliary disease (n = 505) was found to be 23.2 per cent. The spectrum included 111 patients (90.2 per cent) with CBD stones, 37 of whom (33.3 per cent) had no symptoms or findings pre-operatively indicating CBD involvement. Five patients had papillary stenosis, three had postoperative CBD strictures, one had a choledochal cyst and one had an external biliary fistula. Of the 100 CBDs measuring more than 10 mm in diameter, 90 harboured calculi. In the remaining 23 CBDs measuring less than 10 mm, calculi were present in 21. The presence of CBD calculi was demonstrated by intra-operative cholangiography in 49 patients. In the remaining patients (n = 74), the diagnosis of CBD pathology was made either by percutaneous transhepatic cholangiography, endoscopic retrograde cholangio-pancreatography, T-tube cholangiography or peroperative palpation. The surgical procedures performed included choledochotomy and T-tube drainage (n = 74), transduodenal sphincteroplasty (n = 27) and choledochoduodenostomy (n = 18). The overall mortality and morbidity of CBD exploration was 3.3 per cent and 24.4 per cent respectively, which was significantly greater than that for cholecystectomy alone (0.3 per cent and 8.6 per cent respectively). Transduodenal sphincteroplasty carried a much higher mortality (11 per cent) and morbidity (52 per cent) when compared with other procedures. PMID:3167536

  15. Benign and pathological electrocardiographic changes in athletes.

    Science.gov (United States)

    Machado, Marino; Vaz Silva, Manuel

    2015-12-01

    Sudden cardiac death is the leading cause of death in athletes during sport. It is a tragic event that generates significant media attention and discussion throughout society as to whether everything possible had been done to prevent it. Regular physical exercise causes cardiac remodeling at both the mechanical and electrical level, known as athlete's heart, resulting in an electrocardiogram (ECG) considered abnormal compared with the ECGs of the general population. Some of these electrocardiographic changes are considered normal or physiological in athletes, while others suggest underlying cardiac disease with the potential to cause sudden cardiac death. There is thus an urgent need to define the electrocardiographic patterns that allow or prohibit participation in sports, and to differentiate them in terms of gender, ethnicity and age. The purpose of this review is to present the latest data on the electrocardiographic changes considered benign or pathological that are typically found in athletes and to critically analyze the most recent criteria for classifying ECGs in this population (the Seattle criteria), comparing them with previous guidelines and with the latest studies on the subject. This article also examines the question of including ECGs in pre-participation screening programs, the US and European approaches to the subject, and the most up-to-date data on the sensitivity, specificity and cost-effectiveness of the ECG in athletes. PMID:26643438

  16. Treating benign prostatic hyperplasia with botulinum neurotoxin.

    Science.gov (United States)

    Brisinda, G; Vanella, S; Marniga, G; Crocco, A; Maria, G

    2011-01-01

    Botulinum toxin (BoNT) has been increasingly used in the interventional treatment of several disorders; the use of this agent has extended to a plethora of conditions including focal dystonia, spasticity, inappropriate contraction in most gastrointestinal sphincters, eye movement disorders, hyperhidrosis, genitourinary disorders and aesthetically undesirable hyperfunctional facial lines. In addition, BoNT is being investigated for the control of pain, and for the management of tension or migraine headaches and myofascial pain syndrome. Benign prostatic hyperplasia (BPH) is a common condition in ageing men; the goal of therapy is to reduce the lower urinary tract symptoms (LUTS) associated with BPH and to improve the quality of life. However, medical treatment, including drugs that relax smooth muscle within the prostate and drugs that shrink the gland are not totally effective or without complications. The standard surgical treatment for BPH is progressively changing to minimally invasive therapies, but none of them has provided clear results. The use of BoNT-A to inhibit the autonomic efferent effects on prostate growth and contraction, and inhibit the abnormal afferent effects on prostate sensation, might be an alternative treatment for BPH. BoNT injections have several advantages over drugs and surgical therapies in the management of intractable or chronic disease; systemic pharmacologic effects are rare, permanent destruction of tissue does not occur, and graded degrees of relaxation may be achieved by varying the dose injected. In this paper, clinical experience over the last years with BoNT in BPH impaired patients will be illustrated.

  17. Transurethral microwave thermotherapy for benign prostatic hyperplasia

    Directory of Open Access Journals (Sweden)

    Rubeinstein Jonathan N.

    2003-01-01

    Full Text Available Transurethral resection of the prostate (TURP remains the gold standard for treatment of benign prostatic hyperplasia (BPH. In general, while this procedure is safe, patients require a spinal, epidural, or general anesthesia and often several days of hospital stay; the potential morbidity and mortality limits the use of TURP in high-risk patients. Pharmacotherapy has been recommended as a first-line therapy for all patients with mild to moderate symptoms. Patients are oftentimes enthusiastic if they are offered a one-time method to treat lower urinary tract symptoms secondary to BPH, provided that the method offers reduced risk and allows an efficacy equal to that of medical therapy. One such method is transurethral microwave thermotherapy (TUMT. TUMT involves the insertion of a specially designed urinary catheter with a microwave antenna, which heats the prostate and destroys hyperplastic prostate tissue. TUMT allows the avoidance of general or regional anesthesia, and results in minimal blood loss and fluid absorption. In this review, the authors discussed the current indications and outcome of TUMT, including the history of the procedure, the mechanism of action, the indications for TUMT, the pre-operative considerations, the patient selection, the results in terms of efficacy, by comparing TUMT vs. Sham, TUMT vs. Alpha-blocker and TUMT vs. TURP. Finally, the complications are presented, as well as other uses and future directions of the procedure. The authors concluded that TUMT is a safe and effective minimally invasive alternative to treatment of symptomatic BPH.

  18. Sourdough Bread Made from Wheat and Nontoxic Flours and Started with Selected Lactobacilli Is Tolerated in Celiac Sprue Patients

    OpenAIRE

    Di Cagno, Raffaella; De Angelis, Maria; Auricchio, Salvatore; Greco, Luigi; Clarke, Charmaine; De Vincenzi, Massimo; Giovannini, Claudio; D'Archivio, Massimo; Landolfo, Francesca; Parrilli, Giampaolo; Minervini, Fabio; Arendt, Elke; Gobbetti, Marco

    2004-01-01

    This work was aimed at producing a sourdough bread that is tolerated by celiac sprue (CS) patients. Selected sourdough lactobacilli had specialized peptidases capable of hydrolyzing Pro-rich peptides, including the 33-mer peptide, the most potent inducer of gut-derived human T-cell lines in CS patients. This epitope, the most important in CS, was hydrolyzed completely after treatment with cells and their cytoplasmic extracts (CE). A sourdough made from a mixture of wheat (30%) and nontoxic oa...

  19. CT findings of benign lymphoepithelial lesion of major salivary glands%大涎腺良性淋巴上皮病变的CT表现

    Institute of Scientific and Technical Information of China (English)

    余长亮; 李小虎; 王万勤; 刘斌; 余永强

    2013-01-01

    Objective To analyze the CT findings of benign lymphoepithelial lesion (BLEL) of major salivary glands.Methods The CT findings of 11 cases with BLEL which were clinically and pathologically confirmed were analyzed.The relevant literatures were reviewed.All the patients received plain CT.Among them,5 patients had contrast CT as well.The location,number,shape,margin,density,and enhancement characteristics of the lesions were observed.Results Of 11 BLEL,8 lesions were located in the parotid gland,three in the submandibular gland.There were 7 cases with bilateral multiple lesions,and 4 cases with unilateral solitary lesion.BLEL of major salivary gland could be classified into three types according to the CT findings,including multinodular type,solitary mass type,and diffusely infiltrating type.Multinodular type was the most common type.The typical CT findings of the lesion included diffusely enlargement of bilateral parotids and (or) submandibular glands,heterogeneous increase of density of the parenchyma with multiple soft tissue density nodules,and multiple cystiform hypodense.On contrast-enhanced CT,the lesions mostly manifested as heterogeneous enhancement.The solid part of the nodules showed moderate or marked enhancement.However,the cystiform hypodense showed no enhancement.Conclusion Although the CT findings of BLEL of major salivary glands are variable,they still share some common characteristics,which are useful in the clinical diagnosis.%目的 分析大涎腺良性淋巴上皮病变的CT表现,以提高对该病的认识.方法 回顾性分析11例经临床和病理证实的大涎腺良性淋巴上皮病变的CT表现并复习相关文献.所有患者均行CT平扫,其中5例行增强扫描.对病灶的部位、数目、形态、边缘、密度及强化特征等进行观察分析.结果 11例病变中发生于腮腺8例,颌下腺3例.7例双侧多发,4例单侧单发.根据CT表现可分为多发结节型、单发肿块型和弥漫浸润型.以多发结节

  20. Impact of radiation therapy for benign diseases; Role de la radiotherapie dans les affections benignes

    Energy Technology Data Exchange (ETDEWEB)

    Kantor, G. [Institut National de la Sante et de la Recherche Medicale (INSERM), Fondation Bergonie, 33 - Bordeaux (France); Van Houtte, P.; Beauvois, S.; Roelandts, M. [Institut Bordet, Brussels (Belgium)

    1997-12-31

    Radiation therapy of benign diseases represent a wide panel of indications. Some indications are clearly identified as treatment of arteriovenous malformations (AVM), hyperthyroid ophthalmopathy, postoperative heterotopic bone formations or keloid scars. Some indications are under evaluation as complications induced by neo-vessels of age-related macular degeneration or coronary restenosis after angioplasty. Some indications remain controversial with poor evidence of efficiency as treatment of bursitis, tendinitis or Dupuytren`s disease. Some indications are now obsolete such as warts, or contra-indicated as treatment of infant and children. (authors)

  1. FDG PET/CT appearance of benign pilomatricoma.

    Science.gov (United States)

    Bhatt, Manoj Kumar; Sommerville, Ryan; Ravi Kumar, Aravind S

    2012-07-01

    A 56-year-old patient was referred for FDG PET/CT with a right preauricular lymph node fine-needle biopsy, suggesting poorly differentiated carcinoma and no obvious primary lesion. There was intense FDG uptake in the right preauricular nodule. The node was excised, and formal histology demonstrated a benign pilomatricoma rather than malignancy. Pilomatricoma is uncommon in adults and an unusual cause for marked FDG uptake, likely due to foreign body inflammation. Pilomatricoma can be either benign or malignant. The marked FDG uptake demonstrated in our patient with benign pilomatricoma also suggests that FDG PET cannot reliably grade this rare condition.

  2. Amplified interactive toxicity of chemicals at nontoxic levels: Mechanistic considerations and implications to public health

    Energy Technology Data Exchange (ETDEWEB)

    Mehendale, H.M. [Northeast Louisiana Univ., Monroe, LA (United States)

    1994-11-01

    It is widely recognized that exposure to combinations or mixtures of chemicals may result in highly exaggerated toxicity even though the individual chemicals might not be toxic. Assessment of risk from exposure to combinations of chemicals requires the knowledge of the underlying mechanism(s). Dietary exposure to a nontoxic dose of chlordecone (CD; 10 ppm, 15 days) results in a 67-fold increase in lethality of an ordinarily inconsequential dose of CCl{sub 4} (100 {mu}l/kg, ip). Toxicity of closely related CHCl{sub 3} and BrCCl{sub 3} is also enhanced. Phenobarbital (PB, 225 ppm, 15 days) and mirex (10 ppm, 15 days) do not share the propensity of CD in this regard. Exposure to PB + CCl{sub 4} results in enhanced liver injury similar to that observed with CD, but the animals recover and survive in contrast to the greatly amplified lethality of CD + CCl{sub 4}. Investigations have revealed that neither enhanced bioactivation of CCl{sub 4} nor increased lipid peroxidation offers a satisfactory explanation of these findings. Additional studies indicate that exposure to a low dose of CCl{sub 4} (100 {mu}l/kg, ip) results in limited jury, which is accompanied by a biphasic response of hepatocellular regeneration (6 and 36 hr) and tissue repair, which enables the animals to recover from injury. Exposure to CD + CCl{sub 4} results in suppressed tissue repair owing to an energy deficit in hepatocytes as a consequence of excessive intracellular influx of Ca{sup 2+} leading initially to a precipitous decline in glycogen and ultimately to hypoglycemia. Supplementation of cellular energy results in restoration of the tissue repair and complete recovery from the toxicity of CD + CCl{sub 4} combination. In contrast, only the early-phase hepatic tissue repair (6 hr) is affected in PB + CCl{sub 4} treatment, but this is compensated for by a greater stimulation of tissue repair at 24 and 48 hr resulting in recovery from liver and animal survival. 85 refs., 7 figs., 7 tabs.

  3. Low molecular weight chitosan nanoparticulate system at low N:P ratio for nontoxic polynucleotide delivery

    Directory of Open Access Journals (Sweden)

    Alameh M

    2012-03-01

    to previous reports, our data demonstrate that LMW-CS at low N:P ratios are efficient and nontoxic polynucleotide delivery systems capable of transfecting a plethora of cell lines.Keywords: siRNA, nonviral delivery system, chitosan, gene silencing, RecQL1, ApoB

  4. Hereditary benign telangiectasia: first case in Iran.

    Science.gov (United States)

    Javidi, Zari; Maleki, M; Mashayekhi, V; Nahidi, Y; Omidvar Borna, A

    2006-07-01

    A 14-year-old boy was referred to the Dermatology Clinic of the Medical University of Mashhad, Iran, with numerous cutaneous telangiectasias on the face, ears, lips, and back of the hands, with lesions in the temporal region being the first to appear (Figs 1-3). His mother stated that the lesions had been present for 10 years with an increase in the past 6 months. He had no history of bleeding from the nose, mouth, gastrointestinal tract, and other mucosal surfaces, and there was no sign of organ involvement. On inspection, no lesions were detected on the nasal mucosa, external ear, over the tympanic membrane, or mouth. The patient is one member of a family of six. His mother is healthy, but similar lesions were seen in his father, sister and one of his brothers with similar distributions. Lesions were also seen in his aunt and paternal grandmother, showing disease distribution in six members of this family from three generations. The oldest brother is 20 years of age and mentioned the onset of disease from the age of 10 years. The sister is 18 years of age and lesions started to appear 7 years ago; she claims that the lesions regress during her menstrual period. The youngest brother is 4 years of age and shows no sign of cutaneous lesions as yet. The parents are not consanguineous. Generalized telangiectasia with a predominant distribution on light-exposed skin, an autosomal dominant inheritance, and no sign of systemic or mucosal involvement and bleeding disorders indicates a diagnosis of hereditary benign telangiectasia. Our patient did not consent to biopsy. PMID:16863520

  5. [Interstitial laser coagulation of benign prostatic hyperplasia].

    Science.gov (United States)

    Muschter, R; Hessel, S; Hofstetter, A; Keiditsch, E; Rothenberger, K H; Schneede, P; Frank, F

    1993-07-01

    We report on the new method of interstitial laser coagulation for the treatment of benign prostatic hyperplasia (BPH). The procedure is based on the interstitial application of Nd:YAG laser irradiation, delivered through a new light guide system. Such light applicators coagulate constant tissue volumes in a homogeneous manner, as proven by in vitro studies in different tissues, including surgically removed prostate adenoma. The extent of the coagulation is determined by laser power and irradiation time. At 5 W, for example, and during a 10-min period, this zone reached a diameter of up to 20 mm. Temperatures generated in the process were over 100 degrees C, as measured by time/space resolution. These results were confirmed by in vivo studies in canine prostates. In the course of 7 weeks, the coagulated areas formed scars with degeneration and fibrosis, accompanied by marked shrinking. Neighbouring organs were not affected. The method was successfully transferred to clinical practice. The application of the light guides to the lateral lobes was performed percutaneously from the perineum under transrectal ultrasound guidance. The median lobe was punctured transurethrally under direct vision. Twenty-seven patients with an average age of 67.7 years were treated between July 1991 and March 1992. At the time of evaluation 15 patients had a follow-up of more than 2 months. They experienced a mean increase of peak flow rate from 6.6 to 15.2 ml/s and a mean decrease of residual volume from 206 to 38 ml. This was accompanied by a marked lessening of symptoms. The average prostate weight decreased from 63 to 44 g. Sexually active patients did not experience retrograde ejaculation.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:7690498

  6. VIDEOLARYNGOSCOPIC SURGEY IN BENIGN LARYNGEAL LESIONS-OUR EXPERIENCE

    Directory of Open Access Journals (Sweden)

    Satheesh

    2015-11-01

    Full Text Available : Benign laryngeal lesions are commonly encountered causes of dysphonia and are often surgically correctable. A prospective study on 62 cases selected for videolaryngoscopic surgery was undertaken in a single unit in the department of ENT, Medical College Hospital, Thiruvananthapuram. The male: female ratio was 1.8:1 and the most common affected age group was 35-45 yrs. The most common benign lesion was vocal polyp. Preoperative voice assessment and 70 degree endoscopy was done. Follow up visits were done at 1 week, 3 weeks and 6 weeks and voice assessment and laryngoscopic appearances were noted. 98% reported excellent improvement of voice. The varieties of benign lesions which cause hoarseness are sources of concern and worry as it can affect the self esteem of a person. Thus videolaryngoscopic surgery (VLS coupled with voice therapy offers cost effective and safe management in benign laryngeal lesions

  7. Therapy: a new nonsurgical therapy option for benign thyroid nodules?

    DEFF Research Database (Denmark)

    Hegedüs, Laszlo

    2009-01-01

    Despite the increasing implementation of iodization programs, benign nodular thyroid disease will remain a prevalent therapeutic concern for decades. recent research suggests that nonsurgical therapy, including radioactive iodine, radiofrequency thermal ablation and percutaneous laser ablation...

  8. Environmentally Benign Tribo-systems for Metal Forming

    DEFF Research Database (Denmark)

    Bay, Niels; Azushima, A.; Groche, P.;

    2010-01-01

    The growing awareness of environmental issues and the requirements to establish solutions diminishing the impact on working environment as well as external environment has initiated ever increasing efforts to develop new, environmentally benign tribological systems for metal forming. The present ...

  9. Robotic-Assisted Surgery for Benign Urological Conditions

    OpenAIRE

    Murphy, Declan G; Ben J. Challacombe; Lail-U-Mah Zaheer; M. Shamim Khan; Prokar Dasgupta

    2006-01-01

    Robotic technology for use in surgery has advanced considerably in the past 10 years. This has become particularly apparent in urology where robotic-assisted radical prostatectomy using the da VinciTM surgical system (Intuitive Surgical, CA) has become very popular. The use of robotic assistance for benign urological procedures is less well documented. This article considers the current robotic technology and reviews the situation with regard to robotic surgery for benign urological conditions.

  10. Ultrasound image discrimination between benign and malignant adnexal masses

    OpenAIRE

    Aramendía Vidaurreta, Verónica

    2015-01-01

    This thesis deals with the discrimination between benign and malignant adnexal masses through ultrasound images. This task represents one of the most challenging problems in gynecological practice. Benign adnexal masses should be treated by minimally invasive surgery whereas patients with questionable adnexal masses should be referred for primary surgery. An accurate diagnosis is crucial in order to establish the optimal management for these patients. Therefore, it is essential ...

  11. Benign occipital lobe seizures: Natural progression and atypical evolution

    OpenAIRE

    Prithika Chary; Bhuvaneshwari Rajendran

    2013-01-01

    Benign occipital seizure syndromes are benign childhood epilepsy syndromes and are mainly of two types, Panayiotopoulos syndrome, an autonomic epilepsy and idiopathic childhood occipital epilepsy of Gastaut (ICOE-G) including the idiopathic photosensitive occipital lobe epilepsy. Although both these types are categorized as occipital seizures, they are distinct in presentation and management. They can also be tricky to diagnose as visual symptoms may not always be the presenting feature and i...

  12. Incidence of Benign Results After Laparoscopic Radical Nephroureterectomy

    OpenAIRE

    Hong, Sungwoo; Kwon, Taekmin; You, Dalsan; Jeong, In Gab; Hong, Bumsik; Hong, Jun Hyuk; Ahn, Hanjong; Kim, Choung-Soo

    2014-01-01

    Background and Objectives: Studies of patients with benign pathologic lesions who underwent laparoscopic radical nephroureterectomy (RNU) with preoperative suspicion of upper urinary tract urothelial carcinoma are lacking. The aim of this retrospective cross-sectional study was to evaluate the incidence of benign pathologic lesions on laparoscopic RNU for upper urinary tract tumors that are presumed to be urothelial carcinoma. The clinicopathologic characteristics of these lesions were also d...

  13. Lomber Disk Hernisi ve Benign Eklem Hipermobilite Sendromu

    OpenAIRE

    KARAKAŞLI, Sema; TÜFEKÇİ, Osman

    2013-01-01

    Objective: Benign joint hypermobility is a syndrome that it can be seen together with many other muscle-skeleton disorders. Lower backpain is an important result of hypermobility syndrome. The aim of this study is representing of whether there is a relation between lumbar disc hernia and benign hypermobility syndrome. Material and Methods: 133 patients who diagnosed with lumbar disc hernia was included in this study. By using of revised brighton criteria of these patients, hypermobility is ev...

  14. Benign joint hypermobility syndrome among children with inguinal hernia

    OpenAIRE

    Masoud Nazem; Peyman Mottaghi; Alireza Hoseini; Hesam-al-din Khodadadi

    2013-01-01

    Background: Benign joint hypermobility syndrome (BJHS) is a disorder due to laxity of supporting connective tissue of joints. Inguinal hernia is also proposed due to weak supporting tissue that may be a clinical presentation of a more widespread problem of connective tissue. Materials and Methods: In a cross-sectional study, prevalence of benign hypermobility joint syndrome (BHJS) was assessed among 100 children aged 2-12 year admitted with inguinal hernia during 2010-2011. Results: BJHS (Bei...

  15. Benign Proliferative Breast Lesions and Risk of Cancer

    OpenAIRE

    Serap Erel

    2010-01-01

    Benign breast lesions (BBL) includes a wide variety of histologic entities, which have been broadly classified into non-proliferative lesions, proliferative lesions without atypia, and hyperplasia with atypia. With the increased use of mammography, more benign lesions are being detected, and in order to estimate the risk of breast cancer for specific histologic categories is of great importance to guide clinical management. Women with proliferative lesions without atypia are at slightly incre...

  16. Memenin Benign Proliferatif Lezyonları ve Kanser Riski

    OpenAIRE

    Erel, Serap

    2010-01-01

    Benign breast lesions (BBL) includes a wide variety of histologic entities, which have been broadly classified into non-proliferative lesions, proliferative lesions without atypia, and hyperplasia with atypia. With the increased use of mammography, more benign lesions are being detected, and in order to estimate the risk of breast cancer for specific histologic categories is of great importance to guide clinical management. Women with proliferative lesions without atypia are at slightly incre...

  17. Diagnostic value of chemical shift artifact in distinguishing benign lymphadenopathy

    International Nuclear Information System (INIS)

    Purpose: Today, distinguishing metastatic lymph nodes from secondary benign inflammatory ones via using non-invasive methods is increasingly favorable. In this study, the diagnostic value of chemical shift artifact (CSA) in magnetic resonance imaging (MRI) was evaluated to distinguish benign lymphadenopathy. Subjects and methods: A prospective intraindividual internal review board-approved study was carried out on 15 men and 15 women having lymphadenopathic lesions in different locations of the body who underwent contrast-enhanced dynamic MR imaging at 1.5 T. Then, the imaging findings were compared with pathology reports, using the statistics analyses. Results: Due to the findings of the CSA existence in MRI, a total of 56.7% of the studied lesions (17 of 30) were identified as benign lesions and the rest were malignant, whereas the pathology reports distinguished twelve malignant and eighteen benign cases. Furthermore, the CSA findings comparing the pathology reports indicated that CSA, with confidence of 79.5%, has a significant diagnostic value to differentiate benign lesions from malignant ones. Conclusion: Our study demonstrated that CSA in MR imaging has a suitable diagnostic potential nearing readiness for clinical trials. Furthermore, CSA seems to be a feasible tool to differentiate benign lymph nodes from malignant ones; however, further studies including larger numbers of patients are required to confirm our results.

  18. Smoking habits and benign prostatic hyperplasia

    Science.gov (United States)

    Xu, Huan; Fu, Shi; Chen, Yanbo; Chen, Qi; Gu, Meng; Wang, Zhong

    2016-01-01

    Abstract Previous studies have warned against the promoting effects of cigarette smoking on benign prostatic hyperplasia (BPH). In contrast, some have argued that smoking confers a protective effect regarding BPH, while others have observed an aggravated effect. Thus, we performed this meta-analysis to determine whether cigarette use is associated with BPH risk. To identify articles from observational studies of relevance, a search was performed concurrent to March 21, 2016, on PubMed, Web of Science, Cochrane, EBSCO, and EMBASE databases. Random-effect model, according to the heterogeneity, was calculated to reveal the relative risks (RRs) and corresponding 95% confidence intervals (CIs). Eight articles were included in this meta-analysis, representing data for 44,100 subjects, of which 5221 (11.8%) had BPH as defined according to the criteria. Seven reports are concerned with analysis between nonsmokers and ex-smokers, in which no significant difference was observed (RR = 0.99, 95% CI 0.94–1.05). Another meta-analysis of 7 studies indicated an observable trend, but without significant difference between groups of nonsmokers and current smokers (RR = 1.17, 95% CI 0.98–1.41). Between groups of heavy (6 articles; RR = 1.02, 95% CI 0.84–1.24) and light smokers (5 articles; RR = 0.90, 95% CI 0.71–1.15), again no significant difference appears. Finally, we combined individuals as never-smokers and ever-smokers and still found no significant difference between the 2 groups of patients (RR = 1.03, 95% CI 0.92–1.15). Sensitivity analysis was displayed and confirmed the stability of the present results. Combined evidence from observational studies shows no significant association between cigarette smoking and BPH risk, either for ex-smokers or for current smokers. The trend of elevated BPH risk from smoking was observed only in current smokers compared with nonsmokers, while marginal significance was observed in comparing ever-smokers with

  19. Low-Cost High-Performance Non-Toxic Self-Pressurizing Storable Liquid Bi-Propellant Pressure-Fed Rocket Engine Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Exquadrum proposes a high-performance liquid bi-propellant rocket engine that uses propellants that are non-toxic, self-pressurizing, and low cost. The proposed...

  20. Electrospun type 1 collagen matrices preserving native ultrastructure using benign binary solvent for cardiac tissue engineering.

    Science.gov (United States)

    Elamparithi, Anuradha; Punnoose, Alan M; Kuruvilla, Sarah

    2016-08-01

    Electrospinning is a well-established technique that uses a high electric field to fabricate ultrafine fibrous scaffolds from both natural and synthetic polymers to mimic the cellular microenvironment. Collagen is one of the most preferred biopolymers, due to its widespread occurrence in nature and its biocompatibility. Electrospinning of collagen alone has been reported, with fluoroalcohols such as hexafluoroisopropanol (HFIP) and trifluoroethanol (TFE), but the resultant collagen lost its characteristic ultrastructural integrity of D-periodicity 67 nm banding, confirmed by transmission electron microscopy (TEM), and the fluoroalcohols used were toxic to the environment. In this study, we describe the use of glacial acetic acid and DMSO to dissolve collagen and generate electrospun nanofibers of collagen type 1, which is non-toxic and economical. TEM analysis revealed the characteristic feature of native collagen triple helical repeats, showing 67 nm D-periodicity banding pattern and confirming that the ultrastructural integrity of the collagen was maintained. Analysis by scanning electron microscopy (SEM) showed fiber diameters in the range of 200-1100 nm. Biocompatibility of the three-dimensional (3D) scaffolds was established by MTT assays using rat skeletal myoblasts (L6 cell line) and confocal microscopic analysis of immunofluorescent-stained sections of collagen scaffolds for muscle-specific markers such as desmin and actin. Primary neonatal rat ventricular cardiomyocytes (NRVCM) seeded onto the collagen scaffolds were able to maintain their contractile function for a period of 17 days and also expressed higher levels of desmin when compared with 2D cultures. We report for the first time that collagen type 1 can be electrospun without blending with copolymers using the novel benign solvent combination, and the method can be potentially explored for applications in tissue engineering. PMID:25960178

  1. Visible-light-responsive ZnCuO nanoparticles: benign photodynamic killers of infectious protozoans

    Directory of Open Access Journals (Sweden)

    Nadhman A

    2015-11-01

    Full Text Available Akhtar Nadhman,1,2 Samina Nazir,2 Malik Ihsanullah Khan,1 Attiya Ayub,2,3 Bakhtiar Muhammad,3 Momin Khan,1 Dilawar Farhan Shams,4 Masoom Yasinzai1,5 1Department of Biotechnology, Quaid-i-Azam University, Islamabad, Pakistan; 2Nanosciences and Catalysis Division, National Centre for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan; 3Department of Chemistry, Hazara University, Dhodial, Pakistan; 4Department of Environmental Sciences, Abdul Wali Khan University Mardan, Mardan, Pakistan; 5Center of Interdisciplinary Research, International Islamic University, Islamabad, Pakistan Abstract: Human beings suffer from several infectious agents such as viruses, bacteria, and protozoans. Recently, there has been a great interest in developing biocompatible nanostructures to deal with infectious agents. This study investigated benign ZnCuO nanostructures that were visible-light-responsive due to the resident copper in the lattice. The nanostructures were synthesized through a size-controlled hot-injection process, which was adaptable to the surface ligation processes. The nanostructures were then characterized through transmission electron microscopy, X-ray diffraction, diffused reflectance spectroscopy, Rutherford backscattering, and photoluminescence analysis to measure crystallite nature, size, luminescence, composition, and band-gap analyses. Antiprotozoal efficiency of the current nanoparticles revealed the photodynamic killing of Leishmania protozoan, thus acting as efficient metal-based photosensitizers. The crystalline nanoparticles showed good biocompatibility when tested for macrophage toxicity and in hemolysis assays. The study opens a wide avenue for using toxic material in resident nontoxic forms as an effective antiprotozoal treatment. Keywords: zinc oxide, nanoparticles, doping, photodynamic therapy, Leishmania

  2. Disposal of Toxic and Non-Toxic Waste through Lasers : Destruction of toxic solids, liquids and gases Models and Experimental Results

    OpenAIRE

    Islam, Ali

    2013-01-01

    The report discusses the destruction of toxic and non-toxic solids, liquids and gases through lasers. In order to completely understand the project first chapters describes the basics about laser and plasma separately, from definition to types, components and categories. Differences between laser and microwave system are covered in this chapter as well. Besides lasers there are different technologies that are currently being used to destroy toxic and non-toxic materials. These technologies we...

  3. Induction of Graves' disease in patients with non-autoimmune hyperthyroidism or nontoxic goiter after radioiodine treatment

    International Nuclear Information System (INIS)

    Thyrotropin receptors antibodies may occur and induce Graves' disease (GD) several months after radioiodine therapy in a small number of patients with non-autoimmune hyperthyroidism or nontoxic goiter. The prevalence of radiation-induced GD is between 0.05% and 5%. The hypothesis of this disease includes induction by autoimmune reaction and others. Detection of the thyroid autoantibodise or of 99mTc pertechnetate scan can forecast the appearance of GD. Antithyroid drugs, again radioiodine therapy and surgery are the treatments. (authors)

  4. Ag nanoparticles capped by a nontoxic polymer: Electrochemical and spectroscopic characterization of a novel nanomaterial for glucose detection

    International Nuclear Information System (INIS)

    Modified electrodes with metal or metal oxides nanoparticles are particularly appealing to improve sensor performances and fabricate miniaturized devices, as required also in glucose detection. A Pt electrode modified by drop casting of a novel nanostructured film based on silver nanoparticles (Ag-NPs) capped in a commercial nontoxic polyvinyl alcohol (PVA) matrix is proposed here as a valid alternative to classical glucose (bio)sensors. The extensive electrochemical and spectroscopic characterization by X-ray Photoelectron Spectroscopy (XPS) of this advanced nanomaterial is presented to study its response to glucose and to investigate the chemical nature of deposited Ag.

  5. Benign breast diseases. Radiology, pathology, risk assessment. 2. ed.

    Energy Technology Data Exchange (ETDEWEB)

    Chinyama, Catherine N. [Princess Elizabeth Hospital, Le Vauquiedor, St. Martin' s Guernsey, Channel Islands (United Kingdom); Brighton and Sussex Medical School, Brighton (United Kingdom)

    2014-04-01

    Radiological and pathological correlation of the full range of benign breast lesions, with emphasis on screen-detected lesions. Detailed discussion of risk assessment. Revised and updated edition, with a new chapter on gynaecomastia. Ideal aid to the management of patients with benign or indeterminate breast lesions in a multidisciplinary setting. The second edition of this book has been extensively revised and updated. There have been numerous scientific advances in the radiology, pathology and risk assessment of benign breast lesions since the publication of the first edition. The first edition concentrated on screen-detected lesions, which has since been rectified; new symptomatic and screen-detected lesions are discussed in the second edition and include: mastitis and breast abscesses, idiopathic granulomatous mastitis, diabetic mastopathy, phyllodes tumours, gynaecomastia and pseudoangiomatous stromal hyperplasia. The chapters on columnar cell lesions and mucocele-like lesions have been extensively updated. Where applicable, genetic analysis of the benign lesions, which is becoming part of personalised medicine in the field of breast cancer, has been included. The book also presents detailed analyses of the main models, such as the Gail Model, used to assess the subsequent risk of breast cancer in individuals. The current trend in the management of all cancers is preventative. Screening mammography detects early curable cancers as well as indeterminate lesions, the latter of which are invariably pathologically benign. The author has collated important benign lesions and, based on peer-reviewed publications, has documented the relative risk of subsequent cancer to allow the patient and the clinician to implement preventative measures where possible. This book will therefore serve as an essential component of multidisciplinary management of patients with symptomatic and screen-detected benign breast lesions.

  6. Benign breast diseases. Radiology, pathology, risk assessment. 2. ed.

    International Nuclear Information System (INIS)

    Radiological and pathological correlation of the full range of benign breast lesions, with emphasis on screen-detected lesions. Detailed discussion of risk assessment. Revised and updated edition, with a new chapter on gynaecomastia. Ideal aid to the management of patients with benign or indeterminate breast lesions in a multidisciplinary setting. The second edition of this book has been extensively revised and updated. There have been numerous scientific advances in the radiology, pathology and risk assessment of benign breast lesions since the publication of the first edition. The first edition concentrated on screen-detected lesions, which has since been rectified; new symptomatic and screen-detected lesions are discussed in the second edition and include: mastitis and breast abscesses, idiopathic granulomatous mastitis, diabetic mastopathy, phyllodes tumours, gynaecomastia and pseudoangiomatous stromal hyperplasia. The chapters on columnar cell lesions and mucocele-like lesions have been extensively updated. Where applicable, genetic analysis of the benign lesions, which is becoming part of personalised medicine in the field of breast cancer, has been included. The book also presents detailed analyses of the main models, such as the Gail Model, used to assess the subsequent risk of breast cancer in individuals. The current trend in the management of all cancers is preventative. Screening mammography detects early curable cancers as well as indeterminate lesions, the latter of which are invariably pathologically benign. The author has collated important benign lesions and, based on peer-reviewed publications, has documented the relative risk of subsequent cancer to allow the patient and the clinician to implement preventative measures where possible. This book will therefore serve as an essential component of multidisciplinary management of patients with symptomatic and screen-detected benign breast lesions.

  7. Congenital thyroid hemiagenesis with multinodular goiter

    International Nuclear Information System (INIS)

    Thyroid hemiagenesis is a rare form of thyroid dysgenesis characterized by an absence of half of the thyroid gland. Developmental hemi-thyroid anomalies can result from either an abnormal descent or an agenesis of one lobe of the thyroid gland. We report a case of a 40-year-old woman with history of a longstanding gradually progressive thyroid swelling without any complication. An ultrasonographic examination diagnosed the absence of the left thyroid lobe and enlargement of the right lobe, which was confirmed on a computed tomography (CT) angiogram and a radionuclide scan of the neck. A cytological examination showed nodular goiter with cystic degeneration. Right subtotal thyroidectomy was performed and histopathological examination confirmed adenomatous goiter with degenerative changes. We report the rarity of the condition and emphasize the role of a comprehensive radiological, cytological, and radionuclide algorithm for an accurate preoperative diagnosis and subsequent management

  8. Intraosseous Benign Lesions of the Jaws: A Radiographic Study

    International Nuclear Information System (INIS)

    Benign maxillo-mandibular tumors and cysts, which are relatively common findings on radiographs, namely the ubiquitous panoramic view, have to be dealt with by dentists on a daily basis. The aim of this study is to evaluate the panoramic radiographic findings pertaining to benign and tumoral lesions in the maxilla and mandible. Applying a case series method, panoramic images of 61 patients with cysts, benign tumors and tumor-like lesions in the jaws who were referred to Hamedan dental school between 2009 and 2011 were evaluated by two radiologists. They were both blind to histopathological results as well as the objectives of our study. Lesions were assessed based on their location, periphery, internal structure and impaction on the surrounding structures. Then the obtained data were analyzed using descriptive tables. Cysts were mostly more common in men despite the equal propensity of both genders to benign tumors. In contrast, women showed a higher frequency of tumor-like lesions. The most common site of involvement was the posterior mandible, with peri-apical tooth lesions as the most prevalent dental association. Radiographically, what we most encountered was unilocular radiolucency pertaining to cysts and benign tumors; nevertheless, tumor-like lesions tended to present with a well-defined radiopacity. Despite its known shortcomings, like every other diagnostic tool, panoramic radiography can contribute to the early detection of maxillary/mandibular lesions that in turn enable the dentist to devise an appropriate treatment plan

  9. The Luminescent Oligothiophene p-FTAA Converts Toxic Aβ1-42 Species into Nontoxic Amyloid Fibers with Altered Properties.

    Science.gov (United States)

    Civitelli, Livia; Sandin, Linnea; Nelson, Erin; Khattak, Sikander Iqbal; Brorsson, Ann-Christin; Kågedal, Katarina

    2016-04-22

    Aggregation of the amyloid-β peptide (Aβ) in the brain leads to the formation of extracellular amyloid plaques, which is one of the pathological hallmarks of Alzheimer disease (AD). It is a general hypothesis that soluble prefibrillar assemblies of the Aβ peptide, rather than mature amyloid fibrils, cause neuronal dysfunction and memory impairment in AD. Thus, reducing the level of these prefibrillar species by using molecules that can interfere with the Aβ fibrillation pathway may be a valid approach to reduce Aβ cytotoxicity. Luminescent-conjugated oligothiophenes (LCOs) have amyloid binding properties and spectral properties that differ when they bind to protein aggregates with different morphologies and can therefore be used to visualize protein aggregates. In this study, cell toxicity experiments and biophysical studies demonstrated that the LCO p-FTAA was able to reduce the pool of soluble toxic Aβ species in favor of the formation of larger insoluble nontoxic amyloid fibrils, there by counteracting Aβ-mediated cytotoxicity. Moreover, p-FTAA bound to early formed Aβ species and induced a rapid formation of β-sheet structures. These p-FTAA generated amyloid fibrils were less hydrophobic and more resistant to proteolysis by proteinase K. In summary, our data show that p-FTAA promoted the formation of insoluble and stable Aβ species that were nontoxic which indicates that p-FTAA might have therapeutic potential. PMID:26907684

  10. Diagnosis and Treatment of Benign Paroxysmal Positional Vertigo

    Directory of Open Access Journals (Sweden)

    Muhammed Dagkiran

    2015-12-01

    Full Text Available Benign paroxysmal positional vertigo is the cause of peripheral vertigo, which only takes seconds posed by certain head and body position and led to severe attacks of vertigo. Therefore, it is a disturbance that causes a continuous fear of fall and anxiety in some patients. Although benign paroxysmal positional vertigo is the most common cause of peripheral vertigo, it may cause unnecessary tests, treatment costs and the loss of labor due to the result of the delay in the diagnosis and treatment stages. Diagnosis and treatment of this disease is easy. High success rates can be achieved with appropriate repositioning maneuvers after taking a detailed medical history and accurate assessment of accompanying nystagmus. The aim of this paper was to review the updated information about benign paroxysmal positional vertigo. [Archives Medical Review Journal 2015; 24(4.000: 555-564

  11. Benign Cystic Peritoneal Mesothelioma Revealed by Small Bowel Obstruction.

    Science.gov (United States)

    Bray Madoué, Kaimba; Boniface, Moifo; Annick Laure, Edzimbi; Pierre, Herve

    2016-01-01

    Benign cystic peritoneal mesothelioma is a rare tumor which frequently occurs in women of reproductive age. Abdominal pain associated with pelvic or abdominal mass is the common clinical presentation. We report the case of a 22-year-old woman with a pathological proved benign cystic mesothelioma of the peritoneum revealed by a small bowel obstruction and a painful left-sided pelvic mass with signs of psoitis. Contrast enhanced abdominal CT-scan demonstrated a large pelvic cystic mass with mass effect on rectosigmoid and pelvic organs. The patient underwent surgical removal of the tumor. Pathological examination revealed the diagnosis of benign cystic mesothelioma of the peritoneum. The outcome was excellent with a 12-month recoil.

  12. Benign cementoblastoma of the anterior mandible: an unusual case report

    Science.gov (United States)

    Karöz, Tuğçe Berre; Sumer, Mahmut; Açıkgöz, Aydan; Süllü, Yurdanur

    2016-01-01

    A benign cementoblastoma, which is another name for a true cementoma, is a rare neoplasm that develops from odontogenic ectomesenchyme. It is characterized by a mineralized mass attached to the apex of the root produced by neoplastic cementoblasts. More than 75% of cases arise in the mandible, with 90% of them manifesting in the molar and premolar regions. This neoplasm occurs most commonly in children and young adults, with males being affected slightly more than females. Radiographically, the tumor is observed as a well-defined radiopaque mass that is fused to a tooth root and is surrounded by a radiolucent rim. The treatment of benign cementoblastoma consists of removal of the lesion and extraction of the affected tooth. This report presents an unusual case of benign cementoblastoma in a 31-year-old female, presenting as a densely mineralized mass seen at the apex of the impacted right mandibular canine tooth on radiographs. PMID:27595092

  13. Risk of Local Recurrence of Benign and Borderline Phyllodes Tumors

    DEFF Research Database (Denmark)

    Borhani-Khomani, Kaveh; Talman, Maj-Lis Møller; Kroman, Niels;

    2016-01-01

    PURPOSE: To determine the recurrence rate of benign and borderline phyllodes tumors (PTs) of the breast, the association between the size of resection margin and risk of recurrence and the risk of progression of histological grading at recurrence. METHODS: Nationwide retrospective study on Danish...... women aged 18 years or older, operated from 1999 to 2014, with resected benign or borderline PTs. Information on age, size of primary tumor and recurrence, histological grade, surgical treatment, margin size, and local recurrence were collected from the national Danish Pathology Register. RESULTS......: A total of 479 cases were identified; 354 benign (74 %), 89 borderline (19 %), 6 uncertain histological grading (1.2 %), and 30 possibly PT (6 %). The mean age at presentation was 45.6 years (range 18-85), the mean tumor size was 3.5 cm (range 0.5-21), and the mean follow-up time was 98 months (range 1...

  14. Thin-film Sb2Se3 photovoltaics with oriented one-dimensional ribbons and benign grain boundaries

    Science.gov (United States)

    Zhou, Ying; Wang, Liang; Chen, Shiyou; Qin, Sikai; Liu, Xinsheng; Chen, Jie; Xue, Ding-Jiang; Luo, Miao; Cao, Yuanzhi; Cheng, Yibing; Sargent, Edward H.; Tang, Jiang

    2015-06-01

    Solar cells based on inorganic absorbers, such as Si, GaAs, CdTe and Cu(In,Ga)Se2, permit a high device efficiency and stability. The crystals’ three-dimensional structure means that dangling bonds inevitably exist at the grain boundaries (GBs), which significantly degrades the device performance via recombination losses. Thus, the growth of single-crystalline materials or the passivation of defects at the GBs is required to address this problem, which introduces an added processing complexity and cost. Here we report that antimony selenide (Sb2Se3)—a simple, non-toxic and low-cost material with an optimal solar bandgap of ˜1.1 eV—exhibits intrinsically benign GBs because of its one-dimensional crystal structure. Using a simple and fast (˜1 μm min-1) rapid thermal evaporation process, we oriented crystal growth perpendicular to the substrate, and produced Sb2Se3 thin-film solar cells with a certified device efficiency of 5.6%. Our results suggest that the family of one-dimensional crystals, including Sb2Se3, SbSeI and Bi2S3, show promise in photovoltaic applications.

  15. Benign and malignant gastrointestinal stromal tumors: CT findings and pathology

    International Nuclear Information System (INIS)

    Objective: Through a study of CT findings and the corresponding pathology of gastrointestinal stromal tumors (GIST), to improve the differential diagnosis of benign and malignant GIST. Methods: CT was performed in 25 patients with GIST confirmed by pathohistology and the images were analyzed retrospectively. CT images were compared with the corresponding pathological results, in which the benign and the malignant CT features were concluded. Results In 6 cases of benign GIST, all lesions were oval-shaped and well-defined. 5 cases out of 6 were smaller than Scm in diameter. The CT value increased over 25HU during contrast-enhancement in 5 cases. And there was no central hemorrhage and necrosis or involvement of adjacent organs. In 12 cases of malignant GIST, all tumor's were oval-shaped or lobulated. 10 cases out of 12 were larger than 5 cm in diameter. CT value was elevated over 2$HU in 9 cases during contrast-enhancement. Central hemorrhage and necrosis were found in 7 cases. The involvement of adjacent organs or metastasis was revealed in 9 cases. 7 cases of low grade malignant GIST shared various CT findings with the malignant or benign GIST. The size, non-enhanced density, adjacent involvement, distal metastasis, central hemorrhage and necrosis between malignant tumor and benign tumor were statistically different (p<0.01), while no statistical difference was found in increased CT value during contrast-enhancement, positive rate of immuno-histochemistry, or cell type. Conclusion GIST is lack of clinical, pathological, and CT imaging characterizes, and final diagnosis should be made with immunohistochemistry. But CT reveals the details of GIST and involvement of adjacent organs, which plays an important role in differential diagnosis of benign or malignant GIST and post-operative follow-up. (authors)

  16. Benign tumors of vulva: review and case report of achrocordon

    Directory of Open Access Journals (Sweden)

    Cuauhtémoc Galeana Castillo

    2014-02-01

    Full Text Available The vulvovaginal region is a very complex area because of its anatomy and the fact that it can be source of a large number of benign tumors and less frequent malignant tumors. In recent decades, there have been significant gains in the diagnosis and treatment of vulvovaginal tumors, thanks to the contributions of cellular and molecular biology. The purpose of this review article is to serve as a practical reference for clinical and pathological diagnosis as well as in the outpatient treatment and monitoring of these benign tumors.

  17. Management of benign biliary strictures: current status and perspective.

    Science.gov (United States)

    Kaffes, Arthur J

    2015-09-01

    Benign biliary strictures are common and occur either from hepato-biliary surgery or from diseases including chronic pancreatitis and primary sclerosing cholangitis, among others. The treatment of many such strictures is endoscopic with evolving new approaches especially with fully covered metal stents. The only classification system available is for postoperative strictures with the intention to guide surgical correction. There is no useful classification system to guide both assessment and management of benign biliary strictures. This proposed classification is relevant to patient care in assisting diagnosis and endoscopic management. PMID:26147976

  18. Benign adrenal hemangiomas may mimic metastases on PET.

    Science.gov (United States)

    Calata, Jed F; Sukerkar, Arun N; August, Carey Z; Maker, Ajay V

    2013-11-01

    CT or MRI are utilized in the initial evaluation of adrenal incidentalomas; however, overlap exists between benign and malignant lesions on these examinations. The American College of Radiology recommends PET scans to complement CT and MRI for patients with adrenal masses and a moderate-to-high likelihood of neoplastic disease. We present images of a PET-avid adrenal lesion in a patient with pulmonary and pancreatic neoplasms that mimicked metastasis, but was found to be a benign adrenal hemangioma on surgical resection. The use of PET for adrenal tumors, specifically adrenal hemangiomas, will be reviewed. PMID:24089061

  19. A Benign Cardiac Growth but Not So Indolent.

    Science.gov (United States)

    Wani, Adil S; Reddy, Sahadev T; Harinath, Lakshmi; Biederman, Robert W W

    2016-01-01

    Cardiac lipomatous hypertrophy is a rare benign condition that usually involves the interatrial septum. Due to its benign nature it rarely requires intervention. Its presence outside the interatrial septum is reported infrequently. We present a case of lipomatous hypertrophy in the intraventricular septum that was complicated by a severe, symptomatic, and disabling dynamic left ventricular outflow tract obstruction. The symptoms significantly improved following the excision of the mass. In our case transthoracic echocardiogram was used to visualize the mass and measure the severity of the obstruction; Cardiac Magnetic Resonance Imaging was used to characterize the mass and histopathology confirmed the diagnosis. PMID:27293911

  20. A Benign Cardiac Growth but Not So Indolent

    Directory of Open Access Journals (Sweden)

    Adil S. Wani

    2016-01-01

    Full Text Available Cardiac lipomatous hypertrophy is a rare benign condition that usually involves the interatrial septum. Due to its benign nature it rarely requires intervention. Its presence outside the interatrial septum is reported infrequently. We present a case of lipomatous hypertrophy in the intraventricular septum that was complicated by a severe, symptomatic, and disabling dynamic left ventricular outflow tract obstruction. The symptoms significantly improved following the excision of the mass. In our case transthoracic echocardiogram was used to visualize the mass and measure the severity of the obstruction; Cardiac Magnetic Resonance Imaging was used to characterize the mass and histopathology confirmed the diagnosis.

  1. Diagnostic and therapeutic pitfalls in benign vocal fold diseases

    Directory of Open Access Journals (Sweden)

    Bohlender, Jörg

    2013-12-01

    Full Text Available [english] More than half of patients presenting with hoarseness show benign vocal fold changes. The clinician should be familiar with the anatomy, physiology and functional aspects of voice disorders and also the modern diagnostic and therapeutic possibilities in order to ensure an optimal and patient specific management. This review article focuses on the diagnostic and therapeutic limitations and difficulties of treatment of benign vocal fold tumors, the management and prevention of scarred vocal folds and the issue of unilateral vocal fold paresis.

  2. Hereditary benign telangiectasia without family history in China

    Institute of Scientific and Technical Information of China (English)

    CAI Lin; SUN Qing-miao; ZANG Dong-jie; ZHANG Jian-zhong

    2011-01-01

    A case of hereditary benign telangiectasia without family history was reported. A 39-year-old woman presented with small and tiny telangiectases on the face, neck, upper trunk and forearms at birth. The numbers and sizes of the lesions increased gradually and she had no hemorrhagic diathesis and systemic diseases. No similar patients were found in her family. Upon physical examination, telangiectases were found on the face, neck, upper trunk and forearms; and a telangiectatic erythema was found on the right forearm 25 mm ×40 mm in size. Histopathology examination showed a normal epidermis and dilation of the capillaries at upper dermis. Hereditary benign telangiectasia without family history was diagnosed.

  3. Indeterminate cell histiocytosis that presented clinically as benign cephalic histiocytosis.

    Science.gov (United States)

    Haimovic, Adele; Chernoff, Karen; Hale, Christopher S; Meehan, Shane A; Schaffer, Julie V

    2014-12-16

    Indeterminate cell histiocytosis (ICH) is a rare, heterogeneous disorder that is characterized by immunophenotypic features of both Langerhans cell histiocytosis (LCH) and non-LCH. We describe a 12-month-old boy with a four-month history of asymptomatic, small, pink-tan papules on his face. Histopathologic evaluation showed a superficial, dermal infiltrate of histiocytes that was positive for S100, CD1a, CD68, and Factor XIIIa. To our knowledge, this represents the first report of the clinical presentation of benign cephalic histiocytosis with immunohistochemical findings of ICH. We review the classification of histiocytic disorders and the clinical and immunohistochemical features of both ICH and benign cephalic histiocytosis.

  4. Benign core biopsy of probably benign breast lesions 2 cm or larger: correlation with excisional biopsy and long-term follow-up

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Hyun Kyung; Moon, Hee Jung; Kim, Min Jung; Kim, Eun Kyung [Dept. of Diagnostic Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul (Korea, Republic of)

    2014-10-15

    To evaluate the accuracy of benign core biopsy of probably benign breast lesions (category 3) 2 cm or larger on the basis of excisional biopsy and long-term follow-up. We retrospectively reviewed 146 category 3 lesions in 146 patients 2 cm or larger which were diagnosed as benign by ultrasound (US)-guided core biopsy. Patients were initially diagnosed as benign at core needle biopsy and then followed up with excisional biopsy (surgical excision, n=91; US-guided vacuum assisted excision, n=35) or breast ultrasonography (n=20). Of the 126 patients who underwent surgical excision or US-guided vacuum-assisted excision, 114 patients were diagnosed with benign lesions, 10 patients with borderline lesions (benign phyllodes tumor), and two patients with malignant phyllodes tumors. The probabilities of lesions being benign, borderline and malignant were 91.8% (134/146), 6.8% (10/146), and 1.4% (2/146), respectively. Of 13 patients who had growing masses on follow-up ultrasonography, three (23.1%) were non-benign (two benign phyllodes tumors and one malignant phyllodes tumor). US-guided core needle biopsy of probably benign breast mass 2 cm or larger was accurate (98.6%) enough to rule out malignancy. But, it was difficult to rule out borderline lesions even when they were diagnosed as benign.

  5. Benign colonic neoplasm at the site of ureterosigmoidostomy

    DEFF Research Database (Denmark)

    Qvist, N; Kronborg, O; Hage, E;

    1986-01-01

    A benign colonic polyp with epithelial dysplasia developed in a young male at the site of ureteral implantation in the sigmoid colon following ureterosigmoidostomy for urinary incontinence. Patients with ureterosigmoidostomy represent a high-risk cancer group, and a review of the literature sugge...

  6. BENIGN LESIONS OF THE VOCAL FOLDS - HISTOPATHOLOGY AND PHONOTRAUMA

    NARCIS (Netherlands)

    DIKKERS, FG; NIKKELS, PGJ

    1995-01-01

    Benign lesions of the vocal folds have various appearances. Histopathologic examination might provide the true diagnosis. Therefore, histologic slides of 74 patients (92 vocal folds) with clinically well-defined diagnoses were single-blind examined by a pathologist. Single histologic features did no

  7. Giant Benign Prostatic Hyperplasia in a Pakistani Patient *

    OpenAIRE

    Zafaruddin Khan; Muzamil Tahir; H. Shahzad Ashraf; FazaluRehman Khan Niazi; Munazza Khan; Sadaf Mustafa; Naseruddin Höti

    2014-01-01

    “Giant hyperplasia” of the prostate is a rare pathology of the prostate gland. We report one such case, in which a successful retropubic prostatectomy was performed on an elderly male patient in Pakistan. The weight of the resected prostate was 700 g, which is the eighth largest prostate with benign prostatic hyperplasia reported.

  8. ACUTE-PANCREATITIS IN A PATIENT WITH FAMILIAL BENIGN HYPERCALCEMIA

    NARCIS (Netherlands)

    VANHAEFTEN, TW; HOOGENBERG, K; VANESSEN, LH

    1994-01-01

    A patient with familial benign hypercalcaemia (FBH) who developed relapsing pancreatitis is presented. She underwent distal partial pancreas resection with surgical removal of pancreatic duct stones, and a pancreaticojejunostomy. No further causes for the pancreatitis were found. The present case is

  9. Persistent cellular metabolic changes after hemithyroidectomy for benign euthyroid goiter

    DEFF Research Database (Denmark)

    Toft Kristensen, Tina; Larsen, Jacob; Pedersen, Palle Lyngsie;

    2014-01-01

    , 3, 6 and 12 months after hemithyroidectomy for benign euthyroid goiter. In the hemithyroidectomy group, flow cytometry was used to measure the MMP of tetramethylrhodamine methyl ester (TMRM)- and MitoTracker Green (MTG)-stained PBMCs, and V˙O2 was measured by an Oxycon Pro apparatus. RESULTS: One...

  10. High rate of benign histology in radiologically suspect renal lesions

    DEFF Research Database (Denmark)

    Lindkvist Pedersen, Christina; Winck-Flyvholm, Lili; Dahl, Claus;

    2014-01-01

    INTRODUCTION: The objective of this study was to determine the incidence of benign renal lesions for clinically localised renal masses and the need for new diagnostic procedures to assess these lesions. MATERIAL AND METHODS: This retrospective study included patients who underwent partial or radi...

  11. Update in minimal invasive therapy in benign prostatic hyperplasia.

    NARCIS (Netherlands)

    Hest, P.J. van; Ancona, F.C.H. d'

    2009-01-01

    Last decade several new treatment modalities for minimal invasive therapy of benign prostatic hyperplasia have been developed, both ablative and non-ablative. In this review the authors describe the different techniques and clinical studies of bipolar transurethral resection of the prostate (TURP),

  12. Chiropractic management of a patient with benign paroxysmal positional vertigo

    DEFF Research Database (Denmark)

    Nørregaard, Anette R; Lauridsen, Henrik H; Hartvigsen, Jan

    2009-01-01

    OBJECTIVE: This article describes and discusses the case of a patient with benign paroxysmal positional vertigo (BPPV) characterized by severe vertigo with dizziness, nausea, and nystagmus, treated without the use of spinal manipulation by a doctor of chiropractic. CLINICAL FEATURES: A 46-year-ol...

  13. Caveolin-1 overexpression in benign and malignant salivary gland tumors.

    Science.gov (United States)

    Jaafari-Ashkavandi, Zohreh; Ashraf, Mohammad Javad; Nazhvani, Ali Dehghani; Azizi, Zahra

    2016-02-01

    Caveolin-1, a tyrosine-phosphorylated protein, is supposed to have different regulatory roles as promoter or suppressor in many human cancers. However, no published study concerned its expression in benign and malignant salivary gland tumors. The aim of this study was to evaluate and compare the expression of Cav-1 in the most common benign and malignant salivary gland tumors and evaluate its correlation with proliferation activity. In this cross-sectional retrospective study, immunohistochemical expression of caveolin-1 and Ki67 were evaluated in 49 samples, including 11 normal salivary glands, 15 cases of pleomorphic adenoma (PA), 13 adenoid cystic carcinomas (AdCC), and 10 mucoepidermoid carcinomas (MEC). The expression of Cav-1 was seen in 18 % of normal salivary glands and 85 % of tumors. The immunoreaction in the tumors was significantly higher than normal tissues (P = 0.001), but the difference between benign and malignant tumors was not significant (P = 0.07). Expression of Cav-1 was correlated with Ki67 labeling index in PAs, but not in malignant tumors. Cav-1 expression was not in association with tumor size and stage. Overexpression of Cav-1 was found in salivary gland tumors in comparison with normal tissues, but no significant difference was observed between benign and malignant tumors. Cav-1 was inversely correlated with proliferation in PA. Therefore, this marker may participate in tumorigenesis of salivary gland tumors and may be a potential biomarker for cancer treatments.

  14. Radiological and histopathological study of benign tumors of the mandible

    Energy Technology Data Exchange (ETDEWEB)

    Yoo, Seon Young; Baek, Seung Yon; Choi, Kyung Hee; Suh, Jeung Soo; Rhee, Chung Sik; Kim, Hee Seup [Ewha Womans University College of Medicine, Seoul (Korea, Republic of)

    1984-06-15

    Benign tumors of the mandible are uncommon lesions. That were classified into odontogenic tumors and nonodontogenic tumors. Author reviewed the radiological evaluation and pathological microscopic finding from 33 benign tumors of the mandible that were confirmed by the biopsy during last 10 years in Dental Clinics, Ewha Womans University Hospital and Seoul National University Dental Hospital. Following results were obtained; 1. Benign tumors of the mandible were classified into odontogenic (66.7%) and non-odontogenic tumors (33.3%). 2. The range of the age distribution was between 6 years and 67 years old. The commonest age group was the second decade (39.4%). 3. There was no difference to sex distribution. 4. The most frequent location was the body of the mandible (42.4%). 5. Radiographic findings were relatively characteristic in odontogenic tumors rather than non-odontogenic tumors. 1) Radiolucent cystic lesions-ameloblastoma, odontogenic myxoma, odontogenic fibtoma, aneurysmal bone cyst and neurofibroma. 2) Radiopaque mass lesions-odontoma, cementoma and osteoma. 3) Mixed patterns-ossifying fibroma, cementifying fibroma, calcifying odontogenic epithelial tumor and hemangioma. It was concluded that the radiographic examination was of value to diagnose the benign tumors of the mandible in symptomless patients.

  15. Epidemiology and management of symptomatic benign prostatic hyperplasia

    NARCIS (Netherlands)

    K.M.C. Verhamme (Katia)

    2004-01-01

    textabstractBenign prostatic hyperplasia (BPH) is the most common non-cancerous form of cell growth in men and usually begins with the formation of microscopic nodules in younger men. As BPH progresses, overgrowth occurs in the central area of the prostate, called the transition zone, which wraps ar

  16. Current status of surgery for benign disorders of the esophagus

    NARCIS (Netherlands)

    Draaisma, Werner Adriaan

    2006-01-01

    This thesis aimed at exploring new techniques for the surgical treatment of benign disorders of the esophagus. Specifically, studies were performed on surgery for gastroesophageal reflux disease and large (type II-IV) hiatal hernia. The chapters presented in this thesis involve studies that have bee

  17. Dosage assessment for radioiodine therapy in benign thyroid disorders

    NARCIS (Netherlands)

    Isselt, J.W. van

    2001-01-01

    The general aim of this thesis was to investigate the value and the shortcomings of the becquerel-per-gram method for radioiodine therapy in various benign thyroid disorders. The history of this treatment form, which goes back to the late 1940s, is described in Chapter 1. Almost fifty years after th

  18. Minimally Invasive Surgical Treatments for Benign Prostatic Hyperplasia

    NARCIS (Netherlands)

    V. Tzortzis; S. Gravas; J.J.M.C.H. de la Rosette

    2009-01-01

    Although transurethral resection of the prostate (TURP) is considered to be the reference standard for minimally invasive surgical treatment (MIST) of lower urinary tract symptoms (LUTS) due to benign prostatic obstruction (BPO), it is associated with a noteworthy rate of complication. Transurethral

  19. Benign breast disease and consumption of beverages containing methylxanthines.

    Science.gov (United States)

    La Vecchia, C; Franceschi, S; Parazzini, F; Regallo, M; Decarli, A; Gallus, G; Di Pietro, S; Tognoni, G

    1985-05-01

    The relationship between methylxanthine (Mx) consumption and benign breast disease was evaluated in a case-control study of 288 women with histologically confirmed benign breast lumps (203 dysplastic lesions and 85 benign tumors) and 2 groups of control women--285 patients in the hospital for acute conditions apparently unrelated to the consumption of Mx-containing beverages and 291 outpatients. The relative risk estimates of dysplastic breast lesions (fibrocystic disease), with allowance for all identified potential distorting factors, for women who drank 1-2 or 3 or more cups of coffee per day were 4.1 and 6.4, respectively, when the hospital controls were the comparison group and 2.0 and 3.7, respectively, when the outpatient controls were the comparison group. The relationship was even stronger when the total consumption of Mx-containing beverages (coffee plus tea) was considered and increased with increasing duration of use. The association was not explained by any of the major risk factors for fibrocystic breast diseases or by differences in general characteristics or other lifestyle habits between cases and controls. Mx consumption was not related to the risk of benign breast tumors (fibroadenomas). These findings support the hypothesis that Mx consumption is related to the risk of dysplastic lesions of the breast. PMID:3858587

  20. Sourdough bread made from wheat and nontoxic flours and started with selected lactobacilli is tolerated in celiac sprue patients.

    Science.gov (United States)

    Di Cagno, Raffaella; De Angelis, Maria; Auricchio, Salvatore; Greco, Luigi; Clarke, Charmaine; De Vincenzi, Massimo; Giovannini, Claudio; D'Archivio, Massimo; Landolfo, Francesca; Parrilli, Giampaolo; Minervini, Fabio; Arendt, Elke; Gobbetti, Marco

    2004-02-01

    This work was aimed at producing a sourdough bread that is tolerated by celiac sprue (CS) patients. Selected sourdough lactobacilli had specialized peptidases capable of hydrolyzing Pro-rich peptides, including the 33-mer peptide, the most potent inducer of gut-derived human T-cell lines in CS patients. This epitope, the most important in CS, was hydrolyzed completely after treatment with cells and their cytoplasmic extracts (CE). A sourdough made from a mixture of wheat (30%) and nontoxic oat, millet, and buckwheat flours was started with lactobacilli. After 24 h of fermentation, wheat gliadins and low-molecular-mass, alcohol-soluble polypeptides were hydrolyzed almost totally. Proteins were extracted from sourdough and used to produce a peptic-tryptic digest for in vitro agglutination tests on K 562(S) subclone cells of human origin. The minimal agglutinating activity was ca. 250 times higher than that of doughs chemically acidified or started with baker's yeast. Two types of bread, containing ca. 2 g of gluten, were produced with baker's yeast or lactobacilli and CE and used for an in vivo double-blind acute challenge of CS patients. Thirteen of the 17 patients showed a marked alteration of intestinal permeability after ingestion of baker's yeast bread. When fed the sourdough bread, the same 13 patients had values for excreted rhamnose and lactulose that did not differ significantly from the baseline values. The other 4 of the 17 CS patients did not respond to gluten after ingesting the baker's yeast or sourdough bread. These results showed that a bread biotechnology that uses selected lactobacilli, nontoxic flours, and a long fermentation time is a novel tool for decreasing the level of gluten intolerance in humans.

  1. Plant regeneration of non-toxic Jatropha curcas—impacts of plant growth regulators, source and type of explants

    KAUST Repository

    Kumar, Nitish

    2011-01-28

    Jatropha curcas is an oil bearing species with multiple uses and considerable economic potential as a biofuel plant, however, oil and deoiled cake are toxic. A non-toxic variety of J. curcas is reported from Mexico. The present investigation explores the effects of different plant growth regulators (PGRs) viz. 6-benzyl aminopurine (BAP) or thidiazuron (TDZ) individually and in combination with indole-3-butyric acid (IBA), on regeneration from in vitro and field-grown mature leaf explants, in vitro and glasshouse-grown seedlings cotyledonary leaf explants of non-toxic J. curcas. In all the tested parameters maximum regeneration efficiency (81.07%) and the number of shoot buds per explants (20.17) was observed on 9.08 μM TDZ containing Murashige and Skoog’s (MS) medium from in vitro cotyledonary leaf explants. The regenerated shoot buds were transferred to MS medium containing 10 μM kinetin (Kn), 4.5 μM BAP and 5.5 μM α-naphthaleneacetic acid (NAA) for shoot proliferation. The proliferated shoots could be elongated on MS medium supplemented with 2.25 μM BAP and 8.5 μM IAA. Rooting was achieved when the basal cut end of elongated shoots were dipped in half strength MS liquid medium containing different concentrations and combinations of IBA, IAA and NAA for four days followed by transfer to growth regulators free half strength MS medium supplemented 0.25 mg/l activated charcoal. The rooted plants could be established in soil with more than 90% survival rate.

  2. Role of robotic-assisted surgery in benign esophageal diseases.

    Science.gov (United States)

    Saurabh, Shireesh; Unger, Eric; Grossman, Julie; Couto, Francisco; Singh, Namrata; Lind, David Scott; Panait, Lucian; Castellanos, Andres

    2014-06-01

    Laparoscopic treatment of benign esophageal conditions is technically complex with several inherent limitations. Robotic-assisted surgery provides technical improvement and helps to overcome some of these limitations. We therefore report a single surgeon's experience in management of benign esophageal diseases by robotic-assisted surgery. Over a period of 8 consecutive years, a retrospective chart review was performed of 105 patients who underwent robotic-assisted surgery for benign esophageal diseases by a single surgeon. Demographic data and outcome measures were studied. The robotic-assisted procedures included 85 Nissen fundoplications with and without mesh repair, 12 Heller myotomies and eight para-esophageal hernia repairs. The mean total operating time was lowest for the Nissen group (94 min) and highest for the para-esophageal group (183 min). Operating time decreased from a mean of 105 min in the first 20 cases to 84 min in the last 20 cases for the Nissen group (P = 0.014). The mean length of stay was 1.3, 1.6, 1.5 and 4.8 days for the groups, respectively. Persistent symptoms of dysphagia/reflux/dysphonia requiring further investigation were seen in nine (8 %) of these patients. Two of these patients required repeat Nissen fundoplication in the mesh group. Our complication rate, total operating time and length of stay for robotic-assisted benign esophageal surgery are comparable to those reported in the literature. When performed by an experienced surgeon, robotic-assisted surgery is safe and effective in the management of benign esophageal diseases.

  3. Lamina propria of the mucosa of benign lesions of the vocal folds

    NARCIS (Netherlands)

    Dikkers, FG; Nikkels, PGJ

    1999-01-01

    Objective/Hypothesis: To demonstrate a correlation between the duration and specific pattern of trauma of benign lesions of the vocal folds and their histopathologic appearance, Benign lesions of the vocal folds have various macroscopic appearances. Investigations demonstrate characteristic histopat

  4. Long-term outcome following interstitial laser photocoagulation of benign cold thyroid nodules

    DEFF Research Database (Denmark)

    Døssing, Helle; Bennedbæk, Finn Noe; Hegedüs, Laszlo

    2011-01-01

    To evaluate the long-term efficacy of interstitial laser photocoagulation (ILP) in solitary benign thyroid nodules.......To evaluate the long-term efficacy of interstitial laser photocoagulation (ILP) in solitary benign thyroid nodules....

  5. Environmentally Benign and Permanent Modifications to Prevent Biofouling on Marine and Hydrokinetic Devices

    Energy Technology Data Exchange (ETDEWEB)

    Zheng Zhang

    2012-04-19

    Semprus Biosciences is developing environmentally benign and permanent modifications to prevent biofouling on Marine and Hydrokinetic (MHK) devices. Biofouling, including growth on external surfaces by bacteria, algae, barnacles, mussels, and other marine organisms, accumulate quickly on MHK devices, causing mechanical wear and changes in performance. Biofouling on crucial components of hydrokinetic devices, such as rotors, generators, and turbines, imposes substantial mass and hydrodynamic loading with associated efficiency loss and maintenance costs. Most antifouling coatings leach toxic ingredients, such as copper and tributyltin, through an eroding process, but increasingly stringent regulation of biocides has led to interest in the development of non-biocidal technologies to control fouling. Semprus Biosciences research team is developing modifications to prevent fouling from a broad spectrum of organisms on devices of all shapes, sizes, and materials for the life of the product. The research team designed and developed betaine-based polymers as novel underwater coatings to resist the attachment of marine organisms. Different betaine-based monomers and polymers were synthesized and incorporated within various coating formulations. The formulations and application methods were developed on aluminum panels with required adhesion strength and mechanical properties. The coating polymers were chemically stable under UV, hydrolytic and oxidative environments. The sulfobetaine formulations are applicable as nonleaching and stable underwater coatings. For the first time, coating formulations modified with highly packed sulfobetaine polymers were prepared and demonstrated resistance to a broad spectrum of marine organisms. Assays for comparing nonfouling performance were developed to evaluate protein adsorption and bacteria attachment. Barnacle settlement and removal were evaluated and a 60-day field test was performed. Silicone substrates including a commercial

  6. First histologically confirmed case of a classic chordoma arising in a precursor benign notochordal lesion: differential diagnosis of benign and malignant notochordal lesions

    Energy Technology Data Exchange (ETDEWEB)

    Yamaguchi, Takehiko [Department of Anatomic and Diagnostic Pathology, Dokkyo University School of Medicine, Mibu, Tochigi (Japan); Yamato, Minoru [Department of Radiology, International Catholic Hospital, Tokyo (Japan); Saotome, Koichi [Department of Orthopaedic Surgery, Dokkyo University School of Medicine, Mibu, Tochigi (Japan)

    2002-07-01

    The first histologically confirmed case of a classic chordoma arising in a precursor benign notochordal lesion is presented and the differential diagnosis between benign and malignant notochordal lesions is discussed. A 57-year-old man presented with a classic chordoma in the coccyx. The resected specimen demonstrated a small intraosseous benign notochordal lesion in the coccyx, which was adjacent to the classic chordoma. Also seen were two separate, similar benign lesions in the sacrum. The classic chordoma consisted of multiple lobules that were separated by thin fibrous septa and that showed cords or strands of atypical physaliphorous cells set within an abundant myxoid matrix. In contrast, the benign lesions consisted of intraosseous sheets of bland physaliphorous cells without any extracellular matrix. The affected bone trabeculae showed sclerotic reactions. It was concluded that benign and malignant notochordal lesions can be distinguished microscopically. (orig.)

  7. True cervicothoracic meningocele: a rare and benign condition

    Directory of Open Access Journals (Sweden)

    Bruno L. Pessoa

    2015-12-01

    Full Text Available Cervical meningoceles are rare spinal dysraphism, accounting for approximately 7% of all cystic spinal dysraphism. In spite of the rarity, the clinical course is most of the times benign. The surgical treatment includes resection of the lesion and untethering, when presented. We present a 14-day-old female child with true meningoceles who underwent to surgical excision and dura-mater repair. Retrospect analysis of the literature concerning true cervical meningocele is performed. By reporting this illustrative case, we focus on its classification and its differentiation from other types of cervical spinal dysraphism, such as myelocystocele and myelomeningocele. Although its course is benign, it is mandatory a continuum follow up with periodic magnetic resonance imaging of spinal cord, since late neurological deterioration has been described.

  8. Diagnosis and management of long-standing benign oral ulceration.

    Science.gov (United States)

    Birt, D; From, L; Main, J

    1980-05-01

    The authors formed a Mouth Clinic at Sunnybrook Hospital in 1973 since when there have been 3025 patient visits. Those patients with chronic ulceration present a challenge, the diagnosis sometimes being difficult and therapy not rapidly effective. The differential diagnosis includes lichen planus, pemphigus vulgaris, benign mucous membrane pemphigoid, discoid lupus erythematosus, erythema multiforme, aphthous ulcers, Behcets disease, periadenitis mucosa necrotica recurrens, specific infections and iatrogenic causes. It is possible to reach a definite diagnosis in virtually every case by means of a good history and careful clinical examination supplemented by biopsies and in some cases direct and indirect immunofluorescent studies. Treatment emphasizes scrupulous attention to oral hygiene with baking soda mouthwashes and careful teeth cleaning to minimize the accumulation of dental plaque. Specific therapy includes topical steroids in lichen planus, intra muscular gold in benign mucous membrane pemphigoid, a previously unreported treatment which considerably improved seven out of ten patients, and tetracycline mouthwashes in aphthous ulcers. PMID:6990140

  9. Management of Benign Prostatic Hyperplasia in Older Adults.

    Science.gov (United States)

    Woodard, Todd J; Manigault, Kendra R; McBurrows, Niesha N; Wray, Tiffany L; Woodard, Laresa M

    2016-01-01

    Benign prostatic hyperplasia (BPH), also known as benign prostatic hypertrophy, is a nonmalignant adenomatous overgrowth of the periurethral prostate gland commonly seen in aging men. Historically, it has been assumed that the pathophysiology of lower urinary tract symptoms in men is the result of bladder outlet obstruction associated with prostate enlargement. Symptoms such as urinary hesitancy, incomplete bladder emptying, dribbling or prolonged urination, nocturia, urinary urgency, and/or urge incontinence are common. Understanding the differential diagnosis and ordering appropriate laboratory tests are essential in accurately identifying a BPH diagnosis. Management can be broken down into medical or pharmacological and surgical therapies. This article aims to provide an overview of BPH and its management in older adults. PMID:27535076

  10. Bone marrow oedema associated with benign and malignant bone tumours

    Energy Technology Data Exchange (ETDEWEB)

    James, S.L.J. [Department of Radiology, Royal Orthopaedic Hospital, Birmingham, B31 2AP (United Kingdom)], E-mail: steven.james@roh.nhs.uk; Panicek, D.M. [Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021 (United States); Davies, A.M. [Department of Radiology, Royal Orthopaedic Hospital, Birmingham, B31 2AP (United Kingdom)

    2008-07-15

    Bone marrow oedema is associated with a wide variety of pathological processes including both benign and malignant bone tumours. This imaging finding in relation to intraosseous tumours can aid in providing a more focused differential diagnosis. In this review, we will discuss the MR imaging of bone marrow oedema surrounding intraosseous neoplasms. The different pulse sequences used in differentiating underlying tumour from surrounding oedema are discussed along with the role of dynamic contrast enhanced MRI. Benign lesions commonly associated with bone marrow oedema include osteoid osteoma, osteoblastoma, chondroblastoma and Langerhan's cell histiocytosis. Metastases and malignant primary bone tumours such as osteosarcoma, Ewing's sarcoma and chondrosarcoma may also be surrounded by bone marrow oedema. The imaging findings of these conditions are reviewed and illustrated. Finally, the importance of bone marrow oedema in assessment of post chemotherapeutic response is addressed.

  11. An Infant with Benign Isolated Abducens Palsy After Vaccination

    Directory of Open Access Journals (Sweden)

    Celebi Kocaoglu

    2014-02-01

    Full Text Available Benign isolated abducens palsy is a self-improving clinical entity characterized by esotropia and diplopia led by the deficiency of abduction, and accompanied by no other neurological findings. The entity may occur after experiencing minor fever episodes, viral infection. The pathophysiological mechanism of cellular injury remains unclear. Hypotheses involve damage arising from autoimmune mediation or direct viral invasion causing demyelination, localized arteritis or genetic predisposition, which could increase susceptibility to such nerve palsies. Diagnosed with benign isolated abducens palsy, a 19-month-old girl infant admitted to our outpatient clinic with an acute onset of esotropia in the right eye developing two weeks after the vaccination of diphtheria, acellular pertussis, tetanus, inactivated polio and Haemophilus influenzae type b (DTPa-IP-Hib was presented in this report.

  12. Inorganic carbon acquisition in potentially toxic and non-toxic diatoms: the effect of pH-induced changes in the seawater carbonate chemistry

    DEFF Research Database (Denmark)

    Trimborn, S; Lundholm, Nina; Thoms, S;

    2008-01-01

    The effects of pH-induced changes in seawater carbonate chemistry on inorganic carbon (C-i) acquisition and domoic acid (DA) production were studied in two potentially toxic diatom species, Pseudo-nitzschia multiseries and Nitzschia navis-varingica, and the non-toxic Stellarima stellaris. In vivo...

  13. Suppression of benign prostate hyperplasia by Kaempferia parviflora rhizome

    OpenAIRE

    Kazuya Murata; Hirotaka Hayashi; Shinichi Matsumura; Hideaki Matsuda

    2013-01-01

    Background: Kaempferia parviflora rhizome is used as a folk medicine in Thailand for the treatment of various symptoms. In the present study, the inhibitory activities of extract from K. parviflora rhizome against 5α-reductase (5αR) were subjected. Furthermore, the effects of the extract from K. parviflorar hizome in benign prostate hyperplasia (BPH) were studied using the model mice. Materials and Methods: Preparations of extracts from the rhizomes of K. parviflora, Curcuma zedoaria and Zing...

  14. Association of benign recurrent vertigo and migraine in 208 patients

    OpenAIRE

    Cha, Y-H; Lee, H.; Santell, LS; Baloh, RW

    2009-01-01

    The aim of this study was to determine the association of benign recurrent vertigo (BRV) and migraine, using standardized questionnaire-based interview of 208 patients with BRV recruited through a University Neurotology clinic. Of 208 patients with BRV, 180 (87%) met the International Classification of Headache Disorders 2004 criteria for migraine: 112 migraine with aura (62%) and 68 without aura (38%). Twenty-eight (13%) did not meet criteria for migraine. Among patients with migraine, 70% e...

  15. Magnetic Resonance Imaging of Benign Cardiac Masses: A Pictorial Essay

    Directory of Open Access Journals (Sweden)

    Thomas J Ward

    2013-01-01

    Full Text Available The differential diagnosis for a cardiac mass includes primary and metastatic neoplasms. While primary cardiac tumors are rare, metastatic disease to the heart is a common finding in cancer patients. Several "tumor-like" processes can mimic a true cardiac neoplasm with accurate diagnosis critical at guiding appropriate management. We present a pictorial essay of the most common benign cardiac masses and "mass-like" lesions with an emphasis on magnetic resonance imaging features.

  16. Benign Interaction Between Rural Information Service and Farmers' Income

    Institute of Scientific and Technical Information of China (English)

    HUANG Youlan; HE Yanqun

    2009-01-01

    Based on the improvement of interactive relationship between rural information service system and farmers' income, accompanied by the serious restriction to its mutual promotion caused by such problems as asymmetric information, focusing on introduction of rural information service infrastructure while ignored the application of them, shortage of human resource on information and so on, this paper proposed corresponding measures respectively to promote the benign interaction development between rural information service and farmers' income.

  17. Thermal Ablation for Benign Thyroid Nodules: Radiofrequency and Laser

    Energy Technology Data Exchange (ETDEWEB)

    Baek, Jung Hwan; Lee, Jeong Hyun [University of Ulsan College of Medicine, Asan Medical Center, Seoul (Korea, Republic of); Valcavi, Roberto [Endocrinology Division and Thyroid Disease Center, Arcispedale Santa Maria Nuova, Reggio Emilia (Italy); Pacella, Claudio M. [Diagnostic Imaging and Interventional Radiology Department, Ospedale Regina Apostolorum, Albano Laziale-Rome (IT); Rhim, Hyun Chul [Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of); Na, Dong Kyu [Human Medical Imaging and Intervention Center, Seoul (Korea, Republic of)

    2011-10-15

    Although ethanol ablation has been successfully used to treat cystic thyroid nodules, this procedure is less effective when the thyroid nodules are solid. Radiofrequency (RF) ablation, a newer procedure used to treat malignant liver tumors, has been valuable in the treatment of benign thyroid nodules regardless of the extent of the solid component. This article reviews the basic physics, techniques, applications, results, and complications of thyroid RF ablation, in comparison to laser ablation.

  18. [Benign recurring aseptic meningitis. What requires our attention?].

    Science.gov (United States)

    Kruis, T; Kredel, L; Nassir, M; Godbersen, M; Schneider, T

    2016-02-01

    Benign recurrent aseptic meningitis (BRAM) or Mollaret's meningitis is a rare disease characterized by recurrent episodes of aseptic meningitis followed by spontaneous recovery. Disease courses over several years have been reported. In most cases, BRAM is caused by HSV-2, less frequently by other viruses or autoimmune diseases. In up to 10 %, the aetiology remains unclear. We present a case of idiopathic BRAM and discuss clinical findings, diagnosis and therapeutic options of this rare illness.

  19. Benign retroperitoneal schwannoma presenting as colitis: A case report

    OpenAIRE

    Fass, Gary; Hossey, Didier; Nyst, Michel; Smets, Dirk; Saligheh, Esmail Najar; Duttmann, Ruth; Claes, Kathleen; da Costa, Pierre Mendes

    2007-01-01

    We report a case of a patient presenting with clinical , radiological and endoscopic features of colitis due to a compressive left para-aortic mass. Total open surgical excision was performed, which resulted in complete resolution of colitis. Histopathology and immunohistochemistry revealed benign retroperitoneal schwannoma. These neural sheath tumors rarely occur in the retroperitoneum. They are usually asymptomatic but as they enlarge they may compress adjacent structures, which leads to a ...

  20. Drainage after total thyroidectomy or lobectomy for benign thyroidal disorders

    Institute of Scientific and Technical Information of China (English)

    Tahsin COLAK; Tamer AKCA; Ozgur TURKMENOGLU; Hakan CANBAZ; Bora USTUNSOY; Arzu KANIK; Suha AYDI

    2008-01-01

    Objective: This prospective randomized clinical trial was conducted to evaluate the necessity of drainage after total thyroidectomy or lobectomy for benign thyroidal disorders. Methods: A total of 116 patients who underwent total thyroidectomy or lobectomy for benign thyroidal disorders were randomly allocated to be drained or not. Operative and postoperative outcomes including operating time, postoperative pain assessed by visual analogue scale (VAS), total amount of intramuscular analgesic administration, hospital stay, complications, necessity for re-operation and satisfaction of patients were all assessed. Results: The mean operating time was similar between two groups (the drained and non-drained groups). The mean VAS score was found to be significantly low in the non-drained group patients in postoperative day (POD) 0 and POD 1. The mean amount of intramuscular analgesic requirement was significantly less in the non-drained group. One case of hematoma, two cases of seroma and three cases of transient hypoparathyroidism occurred in the non-drained group, whereas one case of hematoma, two cases of seroma, two cases of wound infections and two cases of transient hypoparathyroidism occurred in the drained group. No patient needed re-operation for any complication. The mean hospital stay was significantly shorter and the satisfaction of patients was superior in the non-drained group. Conclusion: These findings suggest that postoperative complications cannot be prevented by using drains after total thyroidectomy or lobectomy for benign thyroid disorders. Furthermore, the use of drains may increase postoperative pain and the analgesic requirement, and prolong the hospital stay. In the light of these findings, the routine use of drains might not be necessary after thyroid surgery for benign disorders.

  1. Recent advances in treatment for Benign Prostatic Hyperplasia

    OpenAIRE

    van Rij, Simon; Gilling, Peter

    2015-01-01

    Clinical benign prostatic hyperplasia (BPH), often identified as a worsening ability of a male to pass urine, is a significant problem for men in our society. In 2015, the use of personalised medicine is tailoring treatment to individual patient needs and to genetic characteristics. Technological advances in surgical treatment are changing the way BPH is treated and are resulting in less morbidity. The future of BPH treatments is exciting, and a number of novel techniques are currently under ...

  2. Benign Joint Hypermobility Syndrome – not so ‘Benign’

    OpenAIRE

    Yathish GC; Canchi Balakrishnan; Mangat Gurmeet; Taral Parikh; Sagdeo Parikshit; Girish Kakade

    2015-01-01

    Benign joint hypermobility syndrome (BJHS) was earlier considered as a mild or trivial entity, but nowadays it is reported as a multisystem hereditary connective tissue disorder with serious morbidities. In fact, the term ‘Benign’ has been removed, renaming the disease as ‘Joint Hypermobility Syndrome’ (JHS). In addition to the well-known musculoskeletal consequences of joint pain and instability, it can cause chronic widespread pain, gastrointestinal dysmotility, anxiety, phobic states and d...

  3. THYROID PAPILLARY MICROCARCINOMA INCIDENTALLY FOUND FOLLOWING THYROIDECTOMIES FOR BENIGNANT DISEASES

    OpenAIRE

    R. Dănilă; A. Grigorovici; Lidia Ionescu; Ramona Popovici; I. Huţanu; Maria Christina Ungureanu; Cristina Preda; Letiţia Leuştean

    2008-01-01

    Background: According to the 2004 WHO classification, thyroid papillary microcarcinoma (PMC) is defined as a papillary tumour with a diameter of maximum 1 cm, discovered incidentally. The aim of the study was to evaluate the clinical and pathological features as well as the treatment of PMC discovered following thyroidectomies for benign conditions. Material and method. A clinical retrospective study was carried out on a series of 17 cases of MCP, accounting for 1.22% of a total of 1393 resec...

  4. Thermal Ablation for Benign Thyroid Nodules: Radiofrequency and Laser

    OpenAIRE

    Baek, Jung Hwan; Lee, Jeong Hyun; Valcavi, Roberto; Pacella, Claudio M.; Rhim, Hyunchul; Na, Dong Gyu

    2011-01-01

    Although ethanol ablation has been successfully used to treat cystic thyroid nodules, this procedure is less effective when the thyroid nodules are solid. Radiofrequency (RF) ablation, a newer procedure used to treat malignant liver tumors, has been valuable in the treatment of benign thyroid nodules regardless of the extent of the solid component. This article reviews the basic physics, techniques, applications, results, and complications of thyroid RF ablation, in comparison to laser ablation.

  5. Argon Laser Photoablation for Treating Benign Pigmented Conjunctival Nevi

    Science.gov (United States)

    Alsharif, Abdulrahman M.; Al-Gehedan, Saeed M.; Alasbali, Tariq; Alkuraya, Hisham S.; Lotfy, Nancy M.; Khandekar, Rajiv

    2016-01-01

    Purpose: To evaluate the outcomes of argon laser photoablation of benign conjunctival pigmented nevi with different clinical presentations. Patients and Methods: This interventional case series was conducted between July 2014 and January 2015. Patients presenting with benign conjunctival nevi were included. Data were collected on the clinical features at presentation, argon laser photoablation, and follow-up at 8 and 24 weeks. Postoperative photography allowed recording of the success of each case and the overall success rate. Complete removal of conjunctival pigments was considered an absolute success. Partial pigmentation requiring repeat laser treatment was considered a qualified success. Results: There were 14 eyes (four right eyes and ten left eyes) with benign pigmented conjunctival nevi. There were three males and eight females in the study sample. The median age was 36 (25% percentile: 26 years). Three patients had bilateral lesions. The nevi were located temporally in nine eyes, nasally in three eyes, and on the inferior bulbar conjunctiva in two eyes. The mean horizontal and vertical diameters of nevi were 5 ± 2 mm and 4 ± 2.7 mm, respectively. The mean follow-up period was 5 months. Following laser treatment, no eyes had subconjunctival hemorrhage, infection, scarring, neovascularization, recurrence, or corneal damage. The absolute success rate of laser ablation was 79%. Three eyes with elevated nevi had one to three sessions of laser ablation resulting in a qualified success rate of 100%. Conclusions: Argon laser ablation was a safe and effective treatment for the treatment of selective benign pigmented conjunctival nevi in Arab patients. PMID:27555708

  6. Serenoa repens extract in the treatment of benign prostatic hyperplasia

    OpenAIRE

    Geavlete, Petrisor; Multescu, Razvan; Geavlete, Bogdan

    2011-01-01

    We are experiencing a revival of interest in phytotherapeutic agents, both in Europe and North America, especially as a consequence of patients’ dissatisfaction with the adverse effects of the medical alternatives. One of the most frequently prescribed and studied such agents is Serenoa repens extract, derived from the berry of the dwarf palm tree. We aimed to review the most important published data regarding this type of treatment for benign prostatic hyperplasia. A review of the existing a...

  7. Eutectic Salt Catalyzed Environmentally Benign and Highly Efficient Biginelli Reaction

    OpenAIRE

    Najmadin Azizi; Sahar Dezfuli; Mohmmad Mahmoodi Hahsemi

    2012-01-01

    A simple deep eutectic solvent based on tin (II) chloride was used as a dual catalyst and environmentally benign reaction medium for an efficient synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives, from aromatic and aliphatic aldehydes, 1,3-dicarbonyl compounds, and urea in good-to-excellent yields and short reaction time. This simple ammonium deep eutectic solvent, easily synthesized from choline chloride and tin chloride, is relatively inexpensive and recyclable, making it applicable f...

  8. Molecular-receptor-specific, non-toxic, near-infrared-emitting Au cluster-protein nanoconjugates for targeted cancer imaging

    International Nuclear Information System (INIS)

    Molecular-receptor-targeted imaging of folate receptor positive oral carcinoma cells using folic-acid-conjugated fluorescent Au25 nanoclusters (Au NCs) is reported. Highly fluorescent Au25 clusters were synthesized by controlled reduction of Au+ ions, stabilized in bovine serum albumin (BSA), using a green-chemical reducing agent, ascorbic acid (vitamin-C). For targeted-imaging-based detection of cancer cells, the clusters were conjugated with folic acid (FA) through amide linkage with the BSA shell. The bioconjugated clusters show excellent stability over a wide range of pH from 4 to 14 and fluorescence efficiency of ∼5.7% at pH 7.4 in phosphate buffer saline (PBS), indicating effective protection of nanoclusters by serum albumin during the bioconjugation reaction and cell-cluster interaction. The nanoclusters were characterized for their physico-chemical properties, toxicity and cancer targeting efficacy in vitro. X-ray photoelectron spectroscopy (XPS) suggests binding energies correlating to metal Au 4f7/2∼83.97 eV and Au 4f5/2∼87.768 eV. Transmission electron microscopy and atomic force microscopy revealed the formation of individual nanoclusters of size ∼1 nm and protein cluster aggregates of size ∼8 nm. Photoluminescence studies show bright fluorescence with peak maximum at ∼674 nm with the spectral profile covering the near-infrared (NIR) region, making it possible to image clusters at the 700-800 nm emission window where the tissue absorption of light is minimum. The cell viability and reactive oxygen toxicity studies indicate the non-toxic nature of the Au clusters up to relatively higher concentrations of 500 μg ml-1. Receptor-targeted cancer detection using Au clusters is demonstrated on FR+ve oral squamous cell carcinoma (KB) and breast adenocarcinoma cell MCF-7, where the FA-conjugated Au25 clusters were found internalized in significantly higher concentrations compared to the negative control cell lines. This study demonstrates the

  9. Molecular-receptor-specific, non-toxic, near-infrared-emitting Au cluster-protein nanoconjugates for targeted cancer imaging

    Energy Technology Data Exchange (ETDEWEB)

    Retnakumari, Archana; Setua, Sonali; Menon, Deepthy; Ravindran, Prasanth; Nair, Shantikumar; Koyakutty, Manzoor [Amrita Centre for Nanoscience and Molecular Medicine, Amrita Institute of Medical Science, Cochin, 682 041 (India); Muhammed, Habeeb; Pradeep, Thalappil, E-mail: manzoor_nanomed@yahoo.com [Indian Institute of Technology, DST unit on Nanoscience, Chennai, 600 036 (India)

    2010-02-05

    Molecular-receptor-targeted imaging of folate receptor positive oral carcinoma cells using folic-acid-conjugated fluorescent Au{sub 25} nanoclusters (Au NCs) is reported. Highly fluorescent Au{sub 25} clusters were synthesized by controlled reduction of Au{sup +} ions, stabilized in bovine serum albumin (BSA), using a green-chemical reducing agent, ascorbic acid (vitamin-C). For targeted-imaging-based detection of cancer cells, the clusters were conjugated with folic acid (FA) through amide linkage with the BSA shell. The bioconjugated clusters show excellent stability over a wide range of pH from 4 to 14 and fluorescence efficiency of {approx}5.7% at pH 7.4 in phosphate buffer saline (PBS), indicating effective protection of nanoclusters by serum albumin during the bioconjugation reaction and cell-cluster interaction. The nanoclusters were characterized for their physico-chemical properties, toxicity and cancer targeting efficacy in vitro. X-ray photoelectron spectroscopy (XPS) suggests binding energies correlating to metal Au 4f{sub 7/2{approx}}83.97 eV and Au 4f{sub 5/2{approx}}87.768 eV. Transmission electron microscopy and atomic force microscopy revealed the formation of individual nanoclusters of size {approx}1 nm and protein cluster aggregates of size {approx}8 nm. Photoluminescence studies show bright fluorescence with peak maximum at {approx}674 nm with the spectral profile covering the near-infrared (NIR) region, making it possible to image clusters at the 700-800 nm emission window where the tissue absorption of light is minimum. The cell viability and reactive oxygen toxicity studies indicate the non-toxic nature of the Au clusters up to relatively higher concentrations of 500 {mu}g ml{sup -1}. Receptor-targeted cancer detection using Au clusters is demonstrated on FR{sup +ve} oral squamous cell carcinoma (KB) and breast adenocarcinoma cell MCF-7, where the FA-conjugated Au{sub 25} clusters were found internalized in significantly higher concentrations

  10. Restenosis following balloon dilation of benign esophageal stenosis

    Institute of Scientific and Technical Information of China (English)

    Ying-Sheng Cheng; Ming-Hua Li; Ren-Jie Yang; Hui-Zhen Zhang; Zai-Xian Ding; Qi-Xin Zhuang; Zhi-Ming Jiang; Ke-Zhong Shang

    2003-01-01

    AIM: To elucidate the mechanism of restenosis following balloon dilation of benign esophageal stenosis.METHODS: A total of 49 rats with esophageal stenosis were induced in 70 rats using 5 ml of 50 % sodium hydroxide solution and the double-balloon method, and an esophageal restenosis (RS) model was developed by esophageal stenosis using dilation of a percutaneous transluminal coronary angioplasty (PTCA) balloon catheter. These 49 rats were divided into two groups: rats with benign esophageal stricture caused by chemical burn only (control group, n=21) and rats with their esophageal stricture treated with balloon catheter dilation (experimental group, n=28). Imaging analysis and immunohistochemistry were used for both quantitative and qualitative analyses of esophageal stenosis and RS formation in the rats, respectively.RESULTS: Cross-sectional areas and perimeters of the esophageal mucosa layer, muscle layer, and the entire esophageal layers increased significantly in the experimental group compared with the control group. Proliferating cell nuclear antigen (PCNA) was expressed on the 5th day after dilation, and was still present at 1 month. Fibronectin (FN)was expressed on the 1st day after dilation, and was still present at 1 month.CONCLUSION: Expression of PCNA and FN plays an important role in RS after balloon dilation of benign esophageal stenosis.

  11. Glad to be sad, and other examples of benign masochism

    Directory of Open Access Journals (Sweden)

    Paul Rozin

    2013-07-01

    Full Text Available We provide systematic evidence for the range and importance of hedonic reversals as a major source of pleasure, and incorporate these findings into the theory of benign masochism. Twenty-nine different initially aversive activities are shown to produce pleasure (hedonic reversals in substantial numbers of individuals from both college student and Mechanical Turk samples. Hedonic reversals group, by factor analysis, into sadness, oral irritation, fear, physical activity/exhaustion, pain, strong alcohol-related tastes, bitter tastes, and disgust. Liking for sad experiences (music, novels, movies, paintings forms a coherent entity, and is related to enjoyment of crying in response to sad movies. For fear and oral irritation, individuals also enjoy the body's defensive reactions. Enjoyment of sadness is higher in females across domains. We explain these findings in terms of benign masochism, enjoyment of negative bodily reactions and feelings in the context of feeling safe, or pleasure at ``mind over body''. In accordance with benign masochism, for many people, the favored level of initially negative experiences is just below the level that cannot be tolerated.

  12. The spectrum of benign esophageal lesions: imaging findings

    Energy Technology Data Exchange (ETDEWEB)

    Jang, Kyung Mi; Lee, Kyung Soo; Lee, Soon Jin; Kim, Eun A; Kim, Tae Sung; Han, Dae Hee; Shim, Young Mog [Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of)

    2002-09-01

    Benign esophageal lesions occur in various diseases. Barium studies are useful for the evaluation of mucosal surface lesions but provide little information about the extramucosal extent of disease. Computed tomography and magnetic resonance imaging, on the other hand, permit the assessment of wall thickness, mediastinal involvement, adjacent lymphadenopathy, and distant spread. In diseases such as fibrovascular polyps, duplication cysts, scleroderma, trauma, caustic esophagitis, hiatal hernia, esophageal diverticulum, achalasia, and paraesophageal varices, the findings of imaging studies are specific, obviating the need for further invasive diagnostic work-up. The advent of helical computed tomography and its volume data set allows the acquisition of multiplanar images, and magnetic resonance imaging is useful both for this and for tissue characterization. Thus, multiplanar cross-sectional imaging further extends the role of imaging modalities to the evaluation of benign esophageal lesions. Through an awareness of the multiplanar cross-sectional appearances of various benign esophageal lesions, the radiologist can play an important role in the detection, diagnosis, further diagnostic planning, and treatment of the diseases in which they occur.

  13. Gastropericardial fistula complicating benign gastric ulcer: case report

    Energy Technology Data Exchange (ETDEWEB)

    Simice, P.; Zwirewich, C.V. [Univ. of British Columbia, Vancouver General Hospital, Dept. of Radiology, Vancouver, BC (Canada)

    2000-08-01

    Pneumopericardium is a rare radiologic finding and is most commonly associated with esophageal ulceration or trauma. Benign ulcers of the distal esophagus are the most frequent source of non-traumatic perforation into the pericardial sac. Other etiologies include fistula formation from diseased subdiaphragmatic hollow viscera or subphrenic abscess, recent cardiac surgery, an extension of pneumomediastinum into the pericardium sac, and primary septic pericarditis from gasforming organisms. Pneumopericardium caused by the penetration of a benign gastric ulcer is a recognized but rare phenomenon. Intrathoracic gastric perforations are more commonly associated with pneumomediastium. Risk factors associated with an increased risk of penetration of gastric ulcers into the pericardium include the presence of a giant ulcer in the gastric fundus, an ulcer within a hiatus hernia, a history of hiatus hernia repair, concurrent use of non-steroidal anti-inflammatory drugs and the Zollinger-Ellison syndrome. Scar tissue formation at the site of previous hiatal surgery may result in the adherence of the gastric fundus or lower esophagus to the pericardium and produce a pathway for benign ulcers to erode into the pericardium.

  14. Vaccination with non-toxic mutant toxic shock syndrome toxin-1 induces IL-17-dependent protection against Staphylococcus aureus infection.

    Science.gov (United States)

    Narita, Kouji; Hu, Dong-Liang; Asano, Krisana; Nakane, Akio

    2015-06-01

    Toxic shock syndrome toxin-1 (TSST-1) is one of superantigens produced by Staphylococcus aureus. We have previously demonstrated that vaccination with non-toxic mutant TSST-1 (mTSST-1) develops host protection to lethal S. aureus infection in mice. However, the detailed mechanism underlying this protection is necessary to elucidate because the passive transfer of antibodies against TSST-1 fails to provide complete protection against S. aureus infection. In this study, the results showed that interleukin-17A (IL-17A)-producing cells were increased in the spleen cells of mTSST-1-vaccinated mice. The main source of IL-17A in mTSST-1-vaccinated mice was T-helper 17 (Th17) cells. The protective effect of vaccination was induced when the vaccinated wild type but not IL-17A-deficient mice were challenged with S. aureus. Gene expression of chemokines, CCL2 and CXCL1, and infiltration of neutrophils and macrophages were increased in spleens and livers of vaccinated mice after infection. The IL-17A-dependent immune response was TSST-1 specific because TSST-1-deficient S. aureus failed to induce the response. The present study suggests that mTSST-1 vaccination is able to provide the IL-17A-dependent host defense against S. aureus infection which promotes chemokine-mediated infiltration of phagocytes into the infectious foci.

  15. Amelioration of oxidative stress in bio-membranes and macromolecules by non-toxic dye from Morinda tinctoria (Roxb.) roots.

    Science.gov (United States)

    Bhakta, Dipita; Siva, Ramamoorthy

    2012-06-01

    Plant dyes have been in use for coloring and varied purposes since prehistoric times. A red dye found in the roots of plants belonging to genus Morinda is a well recognized coloring ingredient. The dye fraction obtained from the methanolic extract of the roots of Morinda tinctoria was explored for its role in attenuating damages caused by H(2)O(2)-induced oxidative stress. The antioxidant potential of the dye fraction was assessed through DPPH radical scavenging, deoxyribose degradation and inhibition of lipid peroxidation in mice liver. It was subsequently screened for its efficiency in extenuating damage incurred to biomembrane (using erythrocytes and their ghost membranes) and macromolecules (pBR322 DNA, lipids and proteins) from exposure to hydrogen peroxide. In addition, the non-toxic nature of the dye was supported by the histological evaluation conducted on the tissue sections from the major organs of Swiss Albino mice as well as effect on Hep3B cell line (human hepatic carcinoma). The LC-MS confirms the dye fraction to be morindone. Our study strongly suggests that morindone present in the root extracts of M. tinctoria, in addition to being a colorant, definitely holds promise in the pharmaceutical industry.

  16. Reversible anti-settlement activity against Amphibalanus (= Balanus ) amphitrite, Bugula neritina , and Hydroides elegans by a nontoxic pharmaceutical compound, mizolastine

    KAUST Repository

    Zhou, Xiaojian

    2009-11-01

    Mizolastine, an antihistamine pharmaceutical, was found to significantly inhibit larval settlement of the barnacle Amphibalanus (=Balanus) amphitrite, the bryozoan Bugula neritina, and the polychaete Hydroides elegans with EC50 values of 4.2, 11.2, and 4.1 mg ml-1, respectively. No toxicity against the larvae of these three species was observed at the concentration range tested during incubations with mizolastine. To determine whether the anti-settlement activity of mizolastine is reversible, recovery bioassays using these three species were conducted. More than 70% of the larvae that had been exposed for 4 h to mizolastine at concentrations four-fold greater than their respective EC50 values completed normal metamorphosis. The results of the recovery bioassay provide evidence that the antisettlement effect of mizolastine is reversible in addition to being nontoxic. The anti-settlement activities of several intermediates of the synthesis process of mizolastine were also examined. One of the intermediates, 2-chloro-1-(4- fluorobenzyl)-1H-benzo[d]imidazole, inhibited larval settlement and metamorphosis with low toxicity. These results may improve the understanding of the key functional group responsible for the anti-settlement activity of mizolastine. © 2009 Taylor & Francis.

  17. Emulsifying Activity and Stability of a Non-Toxic Bioemulsifier Synthesized by Microbacterium sp. MC3B-10

    Directory of Open Access Journals (Sweden)

    Benjamín Otto Ortega-Morales

    2013-09-01

    Full Text Available A previously reported bacterial bioemulsifier, here termed microbactan, was further analyzed to characterize its lipid component, molecular weight, ionic character and toxicity, along with its bioemulsifying potential for hydrophobic substrates at a range of temperatures, salinities and pH values. Analyses showed that microbactan is a high molecular weight (700 kDa, non-ionic molecule. Gas chromatography of the lipid fraction revealed the presence of palmitic, stearic, and oleic acids; thus microbactan may be considered a glycolipoprotein. Microbactan emulsified aromatic hydrocarbons and oils to various extents; the highest emulsification index was recorded against motor oil (96%. The stability of the microbactan-motor oil emulsion model reached its highest level (94% at 50 °C, pH 10 and 3.5% NaCl content. It was not toxic to Artemia salina nauplii. Microbactan is, therefore, a non-toxic and non-ionic bioemulsifier of high molecular weight with affinity for a range of oily substrates. Comparative phylogenetic assessment of the 16S rDNA gene of Microbacterium sp. MC3B-10 with genes derived from other marine Microbacterium species suggested that this genus is well represented in coastal zones. The chemical nature and stability of the bioemulsifier suggest its potential application in bioremediation of marine environments and in cosmetics.

  18. Ultrasmall cationic superparamagnetic iron oxide nanoparticles as nontoxic and efficient MRI contrast agent and magnetic-targeting tool.

    Science.gov (United States)

    Uchiyama, Mayara Klimuk; Toma, Sergio Hiroshi; Rodrigues, Stephen Fernandes de Paula; Shimada, Ana Lucia Borges; Loiola, Rodrigo Azevedo; Cervantes Rodríguez, Hernán Joel; Oliveira, Pedro Vitoriano; Luz, Maciel Santos; Rabbani, Said Rahnamaye; Toma, Henrique Eisi; Poliselli Farsky, Sandra Helena; Araki, Koiti

    2015-01-01

    Fully dispersible, cationic ultrasmall (7 nm diameter) superparamagnetic iron oxide nanoparticles, exhibiting high relaxivity (178 mM(-1)s(-1) in 0.47 T) and no acute or subchronic toxicity in Wistar rats, were studied and their suitability as contrast agents for magnetic resonance imaging and material for development of new diagnostic and treatment tools demonstrated. After intravenous injection (10 mg/kg body weight), they circulated throughout the vascular system causing no microhemorrhage or thrombus, neither inflammatory processes at the mesentery vascular bed and hepatic sinusoids (leukocyte rolling, adhesion, or migration as evaluated by intravital microscopy), but having been spontaneously concentrated in the liver, spleen, and kidneys, they caused strong negative contrast. The nanoparticles are cleared from kidneys and bladder in few days, whereas the complete elimination from liver and spleen occurred only after 4 weeks. Ex vivo studies demonstrated that cationic ultrasmall superparamagnetic iron oxide nanoparticles caused no effects on hepatic and renal enzymes dosage as well as on leukocyte count. In addition, they were readily concentrated in rat thigh by a magnet showing its potential as magnetically targeted carriers of therapeutic and diagnostic agents. Summarizing, cationic ultrasmall superparamagnetic iron oxide nanoparticles are nontoxic and efficient magnetic resonance imaging contrast agents useful as platform for the development of new materials for application in theranostics.

  19. Antioxidant and Chelating Activity of Nontoxic Jatropha curcas L. Protein Hydrolysates Produced by In Vitro Digestion Using Pepsin and Pancreatin

    Directory of Open Access Journals (Sweden)

    Santiago Gallegos Tintoré

    2015-01-01

    Full Text Available The antioxidant and metal chelating activities in J. curcas protein hydrolysates have been determined. The hydrolysates were produced by treatment of a nontoxic genotype with the digestive enzymes pepsin and pancreatin and then were characterized by fast protein liquid chromatography and reverse phase chromatography. Peptidic fractions with higher radical scavenging activity were analysed by matrix-assisted laser desorption/ionization mass spectrometry. The antioxidant activity was determined by measuring inhibition of the oxidative degradation of β-carotene and by measuring the reactive oxygen species (ROS in Caco-2 cell cultures. Cu2+ and Fe2+ chelating activities were also determined. The hydrolysates inhibited the degradation of β-carotene and the formation of ROS in Caco-2 cells. The lower molecular weight peptidic fractions from FPLC had stronger antioxidant activity in cell cultures compared with the hydrolysates, which correlated with a higher content in antioxidant and chelating amino acids. These fractions were characterized by a large presence of peptides with different molecular masses. The hydrolysates exhibited both Cu2+ and Fe2+ chelating activity. It was concluded that J. curcas is a good source of antioxidant and metal chelating peptides, which may have a positive impact on the economic value of this crop, as a potential source of food functional components.

  20. Microstructure and Properties of DCP-Derived W-ZrC Composite Using Nontoxic Sodium Alginate to Fabricate WC Preform

    Science.gov (United States)

    Najafzadeh Khoee, Ali Asghar; Habibolahzadeh, Ali; Qods, Fathallah; Baharvandi, Hamidreza

    2015-04-01

    In the present work, tungsten carbide (WC) preforms were fabricated by gel-casting process, using different nontoxic Na-alginate to tertiary calcium phosphate ratios and different loadings of WC powder in the initial slurries. The gel-cast green bodies were dried and pre-sintered at 1723 K for 4 h and then reactively infiltrated by molten Zr2Cu at 1623 K for 0.5 h, to produce W-ZrC composite via displacive compensation of porosity process. The phases, microstructures, and mechanical properties of the preforms and the W-ZrC composites were investigated by Fourier transform infrared spectroscope, x-ray diffractometer (XRD), scanning electron microscope (SEM), image analyzer, and universal mechanical testing machine. XRD results, SEM micrographs, and elemental maps indicated uniform distribution of phases (W and ZrC) and elements (W, Zr, and C). Flexural strengths and hardness of the fabricated composites were in the ranges of 429-460 MPa and 7.5-9.5 GPa, respectively. Fractography studies revealed two types of dimple rupture and cleavage fracture modes in different composite samples. The W-ZrC composite was ablated by an oxyacetylene flame for 60 s. The mean value of mass and linear ablation rates of the composite were 2.1 ± 0.1 mg/s and 3.6 ± 0.5 µm/s, respectively.

  1. Controlled delivery of hollow corn protein nanoparticles via non-toxic crosslinking: in vivo and drug loading study.

    Science.gov (United States)

    Xu, Helan; Shen, Li; Xu, Lan; Yang, Yiqi

    2015-02-01

    In this research, controlled delivery of hollow nanoparticles from zein, the corn storage protein, to different organs of mice was achieved via crosslinking using citric acid, a non-toxic polycarboxylic acid derived from starch. Besides, crosslinking significantly enhanced water stability of nanoparticles while preserving their drug loading efficiency. Protein nanoparticles have been widely investigated as vehicles for delivery of therapeutics. However, protein nanoparticles were not stable in physiological conditions, easily cleared by mononuclear phagocyte system (MPS), and thus mainly accumulated and degraded in spleen and liver, the major MPS organs. Effective delivery to major non-MPS organs, such as kidney, was usually difficult to achieve, as well as long resident time of nanoparticles. In this research, hollow zein nanoparticles were chemically crosslinked with citric acid. Controlled delivery and prolonged accumulation of the nanoparticles in kidney, one major non-MPS organ, were achieved. The nanoparticles showed improved stability in aqueous environment at pH 7.4 without affecting the adsorption of 5-FU, a common anticancer drug. In summary, citric acid crosslinked hollow zein nanoparticles could be potential vehicles for controllable delivery of anticancer therapeutics.

  2. Distinguishing benign notochordal cell tumors from vertebral chordoma

    Energy Technology Data Exchange (ETDEWEB)

    Yamaguchi, Takehiko [Sapporo Medical University School of Medicine, Department of Surgical Pathology, Sapporo, Hokkaido (Japan); Iwata, Jun [Kochi Health Science Center, Department of Laboratory Medicine, Kochi, Kochi (Japan); Sugihara, Shinsuke [Kochi Health Science Center, Department of Orthopaedic Surgery, Kochi, Kochi (Japan); McCarthy, Edward F. [The Johns Hopkins Hospital, Department of Pathology, Baltimore, MD (United States); Karita, Michiaki; Murakami, Hideki; Kawahara, Norio; Tsuchiya, Hiroyuki; Tomita, Katsuro [Kanazawa University, Department of Orthopaedic Surgery, Kanazawa, Ishikawa (Japan)

    2008-04-15

    The objective was to characterize imaging findings of benign notochordal cell tumors (BNCTs). Clinical and imaging data for 9 benign notochordal cell tumors in 7 patients were reviewed retrospectively. Conventional radiographs (n = 9), bone scintigrams (n = 2), computed tomographic images (n = 7), and magnetic resonance images (n = 8) were reviewed. Eight of the 9 lesions were stained with hematoxylin-eosin and microscopically examined. There were 3 male and 4 female patients with an age range of 22 to 55 years (average age, 44 years). Two patients had two lesions at different sites. The lesions involved the cervical spine in 4 patients, the lumbar spine in 2, the sacrum in 2, and the coccyx in 1. The most common symptom was mild pain. The lesions of 2 patients were found incidentally during imaging studies for unrelated conditions. Five patients underwent surgical procedures. One patient died of surgical complications. All other patients have been well without recurrent or progressive disease for 13 to 84 months. Radiographs usually did not reveal significant abnormality. Five lesions exhibited subtle sclerosis and 1 showed intense sclerosis. Technetium bone scan did not reveal any abnormal uptake. Computed tomography images had increased density within the vertebral bodies. The lesions had a homogeneous low signal intensity on T1-weighted magnetic resonance images and a high intensity on T2-weighted images without soft-tissue mass. Microscopically, lesions contained sheets of adipocyte-like vacuolated chordoid cells without a myxoid matrix. Benign notochordal cell tumors may be found during routine clinical examinations and do not require surgical management unless they show extraosseous disease. These tumors should be recognized by radiologists, pathologists, and orthopedic surgeons to prevent operations, which usually are extensive. (orig.)

  3. Percutaneous radiofrequency ablation for benign nodules of the thyroid gland

    Energy Technology Data Exchange (ETDEWEB)

    Baek, Jung Hwan; Jeong, Hyun Jo; Kim, Yoon Suk; Kwak, Min Sook; Chang, Sun Hee [Daerim St. Mary' s Hospital, Seoul (Korea, Republic of); Rhim, Hyun Chul [Hanyang University Hospital, Seoul (Korea, Republic of)

    2005-07-15

    We wanted to evaluate the efficacy and safety of using ultrasound guided percutaneous radiofrequency ablation for the benign nodules of the thyroid gland. We studied 148 patients with benign thyroid nodules (200 total nodules) that were confirmed histopathologically, and we performed ultrasound guided radiofrequency ablation. The radiofrequency ablation was done 1 to 5 times per one nodule, and follow-up ultrasonography was performed one to nineteen months after the ablation procedures. The physical changes and the decrease of volume of the nodules were evaluated, and the complications related to radiofrequency ablation were observed. The mean initial nodule volume was 0.01-95.61 ml (mean; 6.83 {+-} SD of 10.63 ml) and the nodule volume after radiofrequency ablation was decreased to 0.00-46.56 ml (mean; 1.83 {+-} SD of 4.69 ml). The mean volume reduction rate was 73.2%. Reduction of more than 50% was noted in 90% of all cases. For 180 nodules (90%), the decrease was 50% or more, in 20 nodules (10%), the decrease was 49% or less. On gray-scale ultrasonogram obtained after ablation, the echogenicity of the nodules changed to darker, and on the doppler-sonogram, the vascular flow within the nodules disappeared in all cases. Most patients complained pain during or right after the procedure, but the pain was transient and subsided after medication. Two patients developed hoarseness that was improved in 1 week and 2 months, respectively. Sonoguided percutaneous radiofrequency ablation can be one of the treatments for benign nodules of the thyroid gland.

  4. Pathologically proven benign chest lesion on F-18 FDG PET

    International Nuclear Information System (INIS)

    FDG PET is good diagnostic tool for oncologic staging work-up, but it has been reported that PET has a difficult in differential diagnosis between some benign diseases and malignancy. We would report benign lung lesion of FDG PET in our center based on pathologic findings. 107 cases of lung cancer which performed lung surgery and 2 cases of pneumoconiosis which performed PCNA were analyzed from Dec 1997 to Mar 2000. Obstructive pneumonitis were proven pathologically in seven cases and hypermetabolic area were seen where proven as obstructive pneumonitis in five of seven cases. Wedge shaped peripherally increased metabolic area with irregular hypermetabolism were seen in 4 of 5 cases. Collapse was proven in 4 cases and only in one case, faintly increased metabolic area was seen in PET where proven as collapse. Radiation fibrosis was proven in one case, which show hypermetabolism in pleural space limited to previous RT field and Empyema with lung cancer was proven in one case, which show increased metabolism in ipsilateral pleural space with focal hypermetabolism. Pulmonary tbc was proven in one case, which show hypermetabolic lesion with central necrosis. Pneumoconiosis were diagnosed in two cases, one of them was combined with lung cancer and the other case was combined with lung cancer and pulmonary tbc at the same time, showing difficult in distinguish scattered small hypermetabolic lesions by pneumoconiosis from metastasis of lung cancer or pulmonary tbc. FDG PET has a difficult in differential diagnosis between some benign disease and malignancy, and more variant and numerous case experience is expected to give help in improving of diagnostic efficiency

  5. Proton Stereotactic Radiosurgery for the Treatment of Benign Meningiomas

    International Nuclear Information System (INIS)

    Purpose: Given the excellent prognosis for patients with benign meningiomas, treatment strategies to minimize late effects are important. One strategy is proton radiation therapy (RT), which allows less integral dose to normal tissue and greater homogeneity than photon RT. Here, we report the first series of proton stereotactic radiosurgery (SRS) used for the treatment of meningiomas. Methods and Materials: We identified 50 patients with 51 histologically proven or image- defined, presumed-benign meningiomas treated at our institution between 1996 and 2007. Tumors of <4 cm in diameter and located ≥2 mm from the optic apparatus were eligible for treatment. Indications included primary treatment (n = 32), residual tumor following surgery (n = 8), and recurrent tumor following surgery (n = 10). The median dose delivered was 13 Gray radiobiologic equivalent (Gy[RBE]) (range, 10.0-15.5 Gy[RBE]) prescribed to the 90% isodose line. Results: Median follow-up was 32 months (range, 6-133 months). Magnetic resonance imaging at the most recent follow-up or time of progression revealed 33 meningiomas with stable sizes, 13 meningiomas with decreased size, and 5 meningiomas with increased size. The 3-year actuarial tumor control rate was 94% (95% confidence interval, 77%-98%). Symptoms were improved in 47% (16/ 34) of patients, unchanged in 44% (15/34) of patients, and worse in 9% (3/34) of patients. The rate of potential permanent adverse effects after SRS was 5.9% (3/51 patients). Conclusions: Proton SRS is an effective therapy for small benign meningiomas, with a potentially lower rate of long-term treatment-related morbidity. Longer follow-up is needed to assess durability of tumor control and late effects.

  6. CLASSIFYING BENIGN AND MALIGNANT MASSES USING STATISTICAL MEASURES

    Directory of Open Access Journals (Sweden)

    B. Surendiran

    2011-11-01

    Full Text Available Breast cancer is the primary and most common disease found in women which causes second highest rate of death after lung cancer. The digital mammogram is the X-ray of breast captured for the analysis, interpretation and diagnosis. According to Breast Imaging Reporting and Data System (BIRADS benign and malignant can be differentiated using its shape, size and density, which is how radiologist visualize the mammograms. According to BIRADS mass shape characteristics, benign masses tend to have round, oval, lobular in shape and malignant masses are lobular or irregular in shape. Measuring regular and irregular shapes mathematically is found to be a difficult task, since there is no single measure to differentiate various shapes. In this paper, the malignant and benign masses present in mammogram are classified using Hue, Saturation and Value (HSV weight function based statistical measures. The weight function is robust against noise and captures the degree of gray content of the pixel. The statistical measures use gray weight value instead of gray pixel value to effectively discriminate masses. The 233 mammograms from the Digital Database for Screening Mammography (DDSM benchmark dataset have been used. The PASW data mining modeler has been used for constructing Neural Network for identifying importance of statistical measures. Based on the obtained important statistical measure, the C5.0 tree has been constructed with 60-40 data split. The experimental results are found to be encouraging. Also, the results will agree to the standard specified by the American College of Radiology-BIRADS Systems.

  7. Acute colonic obstruction due to benign prostatic hypertrophy.

    LENUS (Irish Health Repository)

    Mac Giobuin, S

    2012-02-01

    A seventy two year old man presented to the Emergency Department with clinical features of colonic obstruction. Subsequent radiological investigations confirmed this impression and revealed the aetiology to be compression of the sigmoid colon against the sacrum by a massively distended urinary bladder. Chronic urinary retention due to benign prostatic hypertrophy is an extremely unusual cause of large bowel obstruction. Little in this patient\\'s clinical findings suggested this aetiology. We reviewed the literature in this area and highlight the benefits of CT scanning over contrast studies.

  8. Transformation of benign fibroadenoma to malignant phyllodes tumor

    Science.gov (United States)

    Daigle, Megan E; Tortora, Matthew; Panasiti, Ryane

    2015-01-01

    The transformation of a benign fibroadenoma into a phyllodes tumor is uncommon and unpredictable. We report the case of a 40-year-old woman with a core biopsy proven fibroadenoma that underwent transformation into a malignant phyllodes tumor after 3 years of size stability. We present ultrasound and magnetic resonance images, as well as pathology slides from core biopsy and surgical excision, to illustrate this transformation. It has been suggested that phyllodes tumors may be misdiagnosed as fibroadenomas by core biopsy. However, in this case, pathology supports correct initial diagnosis of fibroadenoma and demonstrates a portion of the original fibroadenoma along the periphery of the malignant phyllodes tumor. PMID:26331090

  9. BENIGN LESIONS OF LARYNX - A CLINICAL STUDY OF 50 CASES

    Directory of Open Access Journals (Sweden)

    Sridhar Reddy

    2016-01-01

    Full Text Available INTRODUCTION Benign Lesions of Larynx (BLL have been defined as “An abnormal mass of tissue in larynx, the growth of which exceeds and is coordinated with that of normal tissue and persists in the same excessive manner after cessation of stimuli which evoked the change.” These lesions have significant influence on vocal, social and emotional adjustments of patients. These patients present with hoarseness of voice. AIM A clinical study was undertaken at Govt. ENT Hospital, Hyderabad, for 1 year from January 2014 to December 2014. Aim of this study was to analyze age and sex distribution, symptomatology, sites of involvement, management and recurrence of benign lesions of larynx. MATERIAL AND METHODS A total of 50 patients were studied who were admitted in the hospital. Inclusion criteria: Patients with Hoarseness of Voice (HOV /change of voice, difficulty in breathing and swallowing, vocal fatigue, Foreign Body (FB sensation in the throat. Exclusion criteria: Malignancy of larynx and acute inflammatory conditions of larynx. RESULTS Benign lesions of larynx show male preponderance with M:F ratio of 2.12:1, with common age group between 31 to 40 years. Chronic vocal misuse was the predominant cause and more in professional voice users. The common lesion was Vocal Cord (VC polyp, followed by VC nodules and papillomas. Common side involved was right side. Majority of the patients had to undergo surgery. Majority of recurrence was seen in laryngeal papillomas (33.33%. CONCLUSION Benign lesions of larynx produce symptoms which vary from mild HOV to life threatening stridor. Early diagnosis leads to effective management. Males were more affected and maximum cases seen between 31 to 40 years. Chronic voice abuse, smoking, alcohol, frequent throat clearing and Laryngopharyngeal Reflux (LPR/Gastroesophageal Reflux Disease (GERD are precipitating factors. Microlaryngeal Surgery (MLS, voice rest and speech therapy offer a cost effective, useful and safe

  10. A study on the environmentally benign fusion breeder-transmuter

    International Nuclear Information System (INIS)

    The present study is an attempt to demonstrate the fusion breeder as a concept environmentally benign, which should help to promote the idea of fusion energy. Thus a sketch of design for a fusion hybrid aimed at satisfying the requirements of: 1. economy (thanks to fissile fuel production), 2. safety (low power density), 3. environment (reduction of impact) is presented. The emphasis which is put on the reliability of performed neutronic calculations (e.g. resonance self-shielding) permits one to recognize the advantages of fusion breeder as confirmed and its development as deserving a significant support. (author)

  11. SPECTRUM OF BENIGN BREAST LESIONS : A CYTOLOGIC STUDY

    Directory of Open Access Journals (Sweden)

    Nirmala

    2015-07-01

    Full Text Available INTRODUCTION: Open biopsy is widely considered to be the procedure of choice for diagnostic tissue sampling of bone tumors. However, associated disadvantages include in - patient procedure requiring hospitalization, risk of infection, hematoma formation and pathological fractures. As an alternative FNA cytology is increasingly used as a diagnostic modality. It is a challenging technique due to difficulties in approaching bone lesions and obtaining adequate material. AIMS: 1. To study the prevalence and distribution of various breast lesions in women of various age groups. 2. To classify the smears into C1 - C5 category . 3. To enumerate the difficulties encountered in this study. 4. To emphasize the role of FNAC in diagnostic workup in breast lesions. MATERIALS AND METHODS: FNAC was done on 208 cases of breast lesions from September 2011 to July 2012 in department of Pathology, Bowring hospital, BMC&RI, Bangalore. Cases presenting to the OPD with b r east lumps were subjected for FNAC. Aspirations were carried out with 10ml disposable syringe with a 22guage needle, materi al was obtained. Aspirates were smeared and few of them were immediately fixed with methanol and stained with H&E, rest of the smears were air dried for MGG staining. The diagnostic criteria C1 - C5 as recommended by NHS breast screening program has been inc orporated for reporting the slides along with pathological diagnosis wherever possible. RESULTS : 1. In countries with limited resources like India, FNAC may be used as the first line of diagnostic tool for evaluating breast lesions. 2. Breast FNA continues its monopoly over core biopsy and open excision biopsy. Benign conditions of breast can be diagnosed easily on FNA if done accurately. The current usage of C1 - C5 categories in typing the breast lesions gives a wide scope for pathologist to place the doubt ful lesions freely in the categories. However a disease specific diagnosis was preferred by the clinicians. 3. In

  12. Cellular schwannoma: a benign neoplasm sometimes overdiagnosed as sarcoma

    Energy Technology Data Exchange (ETDEWEB)

    Alberghini, M. [Dept. of Surgical Pathology, Rizzoli Institute, Bologna (Italy); Anatomia Patologica, Istituto Rizzoli, Bologna (Italy); Zanella, L.; Bacchini, P.; Bertoni, F. [Dept. of Surgical Pathology, Rizzoli Institute, Bologna (Italy)

    2001-06-01

    A case of cellular schwannoma originating in the left lumbar paraspinal region is described. The diagnosis was originally made on needle biopsy material. The histological examination is usually not sufficient to correctly diagnose this benign neoplasm. Bone erosion, neurological symptoms, caused by compression of the spinal roots, together with hypercellularity, pleomorphism and an occasional increase in mitotic activity, may lead to an erroneous diagnosis of malignancy. Immunohistochemistry and ultrastructural analysis are helpful in confirming the diagnosis. The recognition of this entity avoids unnecessary overtreatment of these patients. (orig.)

  13. Benign Joint Hypermobility Syndrome – not so ‘Benign’

    Directory of Open Access Journals (Sweden)

    Yathish GC

    2015-05-01

    Full Text Available Benign joint hypermobility syndrome (BJHS was earlier considered as a mild or trivial entity, but nowadays it is reported as a multisystem hereditary connective tissue disorder with serious morbidities. In fact, the term ‘Benign’ has been removed, renaming the disease as ‘Joint Hypermobility Syndrome’ (JHS. In addition to the well-known musculoskeletal consequences of joint pain and instability, it can cause chronic widespread pain, gastrointestinal dysmotility, anxiety, phobic states and dysautonomia. We present here the case of a 53-year-old lady who presented with history of irritable bowel syndrome, elbow dislocation, repeated knee injuries, and instability resulting in severe secondary osteoarthritis (OA.

  14. Eutectic Salt Catalyzed Environmentally Benign and Highly Efficient Biginelli Reaction

    Directory of Open Access Journals (Sweden)

    Najmadin Azizi

    2012-01-01

    Full Text Available A simple deep eutectic solvent based on tin (II chloride was used as a dual catalyst and environmentally benign reaction medium for an efficient synthesis of 3,4-dihydropyrimidin-2(1H-one derivatives, from aromatic and aliphatic aldehydes, 1,3-dicarbonyl compounds, and urea in good-to-excellent yields and short reaction time. This simple ammonium deep eutectic solvent, easily synthesized from choline chloride and tin chloride, is relatively inexpensive and recyclable, making it applicable for industrial applications.

  15. Eutectic Salt Catalyzed Environmentally Benign and Highly Efficient Biginelli Reaction

    Science.gov (United States)

    Azizi, Najmadin; Dezfuli, Sahar; Hahsemi, Mohmmad Mahmoodi

    2012-01-01

    A simple deep eutectic solvent based on tin (II) chloride was used as a dual catalyst and environmentally benign reaction medium for an efficient synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives, from aromatic and aliphatic aldehydes, 1,3-dicarbonyl compounds, and urea in good-to-excellent yields and short reaction time. This simple ammonium deep eutectic solvent, easily synthesized from choline chloride and tin chloride, is relatively inexpensive and recyclable, making it applicable for industrial applications. PMID:22649326

  16. Benigne Prostatahyperplasie: Therapiemöglichkeiten beim Hund

    OpenAIRE

    Renggli, M; Padrutt, I; Michel, E.; Reichler, I

    2010-01-01

    Unter benigner Prostatahyperplasie versteht man eine primär nicht-entzündliche Vergrösserung der Prostata durch Proliferation ihrer epithelialen und mesenchymalen Strukturen. Diese physiologischen Veränderungen treten bei über 95% der intakten älteren Rüden auf, führen jedoch nur in wenigen Fällen zu klinischen Symptomen, die sich vor allem durch Blutträufeln aus dem Penis, Hämaturie, abgeflachtem Kot, Konstipation und Tenesmus äussern. Neben der chirurgischen Kastration stellen die hormonell...

  17. Identification and Clinical Characterization of Children With Benign Ethnic Neutropenia.

    Science.gov (United States)

    Ortiz, Michael V; Meier, Emily R; Hsieh, Matthew M

    2016-04-01

    Benign ethnic neutropenia (BEN) is an asymptomatic condition reported in adults of African and Middle Eastern descent. The clinical description in children is currently lacking. In our urban outpatient pediatric hematology clinic, the median neutrophil count of children with BEN was lower than previous reports in adults at 893×10 cells/L, but increased with older age. There was an equal male to female ratio and 24% of our BEN children reported ethnicities other than African or Middle Eastern. Children with BEN had a clinical course comparable with other healthy children including otherwise normal blood counts, except for mild anemia.

  18. Environmentally Benign Lubricant Systems For Cold, Warm And Hot Forging

    DEFF Research Database (Denmark)

    Bay, Niels

    2010-01-01

    The growing awareness of environmental issues and the requirements to establish solutions diminishing the impact on working environment as well as external environment has initiated ever increasing efforts to develop new, environmentally benign tribological systems for metal forming. The present...... paper gives an overview of these efforts substituting environmentally hazardous lubricants in cold, warm and hot forging. The paper is an extract of the keynote paper [3] written by the author together with eight co-authors referring to collected papers and other information from more than 30 different...

  19. Numerical simulation of ammonium dinitramide (ADN)-based non-toxic aerospace propellant decomposition and combustion in a monopropellant thruster

    International Nuclear Information System (INIS)

    Highlights: • Decomposition and combustion process of ADN-based thruster are studied. • Distribution of droplets is obtained during the process of spray hit on wire mesh. • Two temperature models are adopted to describe the heat transfer in porous media. • The influences brought by different mass flux and porosity are studied. - Abstract: Ammonium dinitramide (ADN) monopropellant is currently the most promising among all ‘green propellants’. In this paper, the decomposition and combustion process of liquid ADN-based ternary mixtures for propulsion are numerically studied. The R–R distribution model is used to study the initial boundary conditions of droplet distribution resulting from spray hit on a wire mesh based on PDA experiment. To simulate the heat-transfer characteristics between the gas–solid phases, a two-temperature porous medium model in a catalytic bed is used. An 11-species and 7-reactions chemistry model is used to study the catalytic and combustion processes. The final distribution of temperature, pressure, and other kinds of material component concentrations are obtained using the ADN thruster. The results of simulation conducted in the present study are well agree with previous experimental data, and the demonstration of the ADN thruster confirms that a good steady-state operation is achieved. The effects of spray inlet mass flux and porosity on monopropellant thruster performance are analyzed. The numerical results further show that a larger inlet mass flux results in better thruster performance and a catalytic bed porosity value of 0.5 can exhibit the best thruster performance. These findings can serve as a key reference for designing and testing non-toxic aerospace monopropellant thrusters

  20. A nontoxic and low-cost hydrothermal route for synthesis of hierarchical Cu2ZnSnS4 particles

    Science.gov (United States)

    2014-01-01

    We explore a facile and nontoxic hydrothermal route for synthesis of a Cu2ZnSnS4 nanocrystalline material by using l-cysteine as the sulfur source and ethylenediaminetetraacetic acid (EDTA) as the complexing agent. The effects of the amount of EDTA, the mole ratio of the three metal ions, and the hydrothermal temperature and time on the phase composition of the obtained product have been systematically investigated. The addition of EDTA and an excessive dose of ZnCl2 in the hydrothermal reaction system favor the generation of kesterite Cu2ZnSnS4. Pure kesterite Cu2ZnSnS4 has been synthesized at 180°C for 12 h from the reaction system containing 2 mmol of EDTA at 2:2:1 of Cu/Zn/Sn. It is confirmed by Raman spectroscopy that those binary and ternary phases are absent in the kesterite Cu2ZnSnS4 product. The kesterite Cu2ZnSnS4 material synthesized by the hydrothermal process consists of flower-like particles with 250 to 400 nm in size. It is revealed that the flower-like particles are assembled from single-crystal Cu2ZnSnS4 nanoflakes with ca. 20 nm in size. The band gap of the Cu2ZnSnS4 nanocrystalline material is estimated to be 1.55 eV. The films fabricated from the hierarchical Cu2ZnSnS4 particles exhibit fast photocurrent responses under intermittent visible-light irradiation, implying that they show potentials for use in solar cells and photocatalysis. PMID:24855463

  1. Effects of diuretics on iodine uptake in non-toxic goitre: comparison with low-iodine diet

    Energy Technology Data Exchange (ETDEWEB)

    Kapucu, L.Ozlem; Azizoglu, Firat [Department of Nuclear Medicine, Gazi University, Ankara (Turkey); Ayvaz, Goksun; Karakoc, Ayhan [Department of Endocrinology, Gazi University, Ankara (Turkey)

    2003-09-01

    Low-iodine diet has been employed to achieve iodine depletion prior to radioiodine (RI) therapy. However, treatment with diuretics may be more effective than low-iodine diet in causing iodine depletion and subsequent increase in RI uptake by the thyroid. Fifty-five patients with non-toxic goitre were given 0.20 MBq RI p.o. on the first day of the study and thyroid uptake was measured. In 15 patients, a low-iodine diet was started and continued for 14 days. The remaining 40 patients received furosemide 40 mg/day orally for 5 days with an unrestricted diet. On the 15th day of the study, all patients were given 0.20 MBq RI p.o. and thyroid RI uptake was measured again. Additionally, 24-h urinary iodine excretion and RI clearance were measured on the 1st and 6th days in 21 patients from the furosemide group and on the 1st and 15th days in eight patients from the diet group. Furosemide administration led to a 58.40% increase in iodine uptake over the baseline value, which was significantly higher than the increase caused by low-iodine diet (17.22%) (P<0.0001). Urinary excretion of RI decreased in both groups similarly (furosemide, 29.45%; low-iodine diet, 21.06%; P=0.33). Iodine clearance also decreased in each group similarly (10.61% vs 7.53%, P=0.53). Treatment with furosemide prior to administration of RI increases the uptake of RI by the thyroid more effectively than does low-iodine diet. (orig.)

  2. The nontoxic natural compound Curcumin exerts anti-proliferative, anti-migratory, and anti-invasive properties against malignant gliomas

    International Nuclear Information System (INIS)

    New drugs are constantly sought after to improve the survival of patients with malignant gliomas. The ideal substance would selectively target tumor cells without eliciting toxic side effects. Here, we report on the anti-proliferative, anti-migratory, and anti-invasive properties of the natural, nontoxic compound Curcumin observed in five human glioblastoma (GBM) cell lines in vitro. We used monolayer wound healing assays, modified Boyden chamber trans-well assays, and cell growth assays to quantify cell migration, invasion, and proliferation in the absence or presence of Curcumin at various concentrations. Levels of the transcription factor phospho-STAT3, a potential target of Curcumin, were determined by sandwich-ELISA. Subsequent effects on transcription of genes regulating the cell cycle were analyzed by quantitative real-time PCR. Effects on apoptosis were determined by caspase assays. Curcumin potently inhibited GBM cell proliferation as well as migration and invasion in all cell lines contingent on dose. Simultaneously, levels of the biologically active phospho-STAT3 were decreased and correlated with reduced transcription of the cell cycle regulating gene c-Myc and proliferation marking Ki-67, pointing to a potential mechanism by which Curcumin slows tumor growth. Curcumin is part of the diet of millions of people every day and is without known toxic side effects. Our data show that Curcumin bears anti-proliferative, anti-migratory, and anti-invasive properties against GBM cells in vitro. These results warrant further in vivo analyses and indicate a potential role of Curcumin in the treatment of malignant gliomas

  3. Facile development of Au-ring microelectrode for in vivo analysis using non-toxic polydopamine as multifunctional material.

    Science.gov (United States)

    Lin, Yuqing; Wang, Keqing; Xu, Yanan; Li, Linbo; Luo, Jingxuan; Wang, Chao

    2016-04-15

    In this study, we describe a facile and fast wet deposition technique to bottom-up fabricate Au-ring microelectrodes (Au-RMEs) using non-toxic polydopamine as multifunctional grafting material instead of commonly used (3-aminopropyl)-trimethoxysilane (APTMS). The Au-RMEs are fabricated by growing Au film uniformly inside of a pulled glass capillary. Au-RMEs with tip apex diameter ranging from 15 to 50 μm were fabricated involving four consequent steps, i.e. hydroxylating the inside wall of a pulled glass capillaries, grafting adhesive polydopamine (PDA) film to hydroxyl group surface, seeding gold nanoparticles (AuNPs) onto PDA surface and finally growing thickness-tunable gold layer on top of gold nanoparticles. After 3-mercaptopropionic acid (MPA) self-assembled monolayers (SAMs) modification, the Au-RMEs obtain improved specificity and sensitivity for monitoring of dopamine (DA) with respect to alleviating ascorbic acid (AA) interference. The current response is in wide linearity to DA concentration in the range of 0.2-100.0 μM with a correlation coefficient of 0.998 and the detection limit as low as 50.0 nM (S/N=3). In addition, the designed glass substrates of Au-RMEs were mechanically stronger and their tips can be further sharped by adjusting the pulling program. In order to demonstrate the utility of these fabricated microelectrodes in neurochemistry, Au-RMEs were used for electrochemical monitoring of DA release stimulated by K(+) in the striatum of rats. Thus, this study offers a novel and reliable strategy for preparing Au microelectrodes and maybe an attractive alternative to the traditional options for continuous and in vivo electrochemical monitoring of DA in various physiological processes.

  4. Benign thyroid disorders, radioiodine therapy and diagnosis related groups (DRGs): aspects of cost/benefit; Benigne Schilddruesenerkrankungen, Radioiodtherapie und Diagnosis Related Groups (DRGs): Kosten-Nutzen-Aspekte

    Energy Technology Data Exchange (ETDEWEB)

    Dietlein, M.; Schicha, H. [Klinik und Poliklinik fuer Nuklearmedizin der Univ. zu Koeln (Germany)

    2005-06-01

    The increasing prevalence of goiter and thyroid nodules in older patients is accompanied by an increasing frequency of treatment and cost. Cost-effectiveness is given for programs of prophylaxis (primary prevention, e.g. alimentary iodine supplementation), for programs of screening (secondary prevention. e.g. TSH-screening), and for therapeutic strategies to avoid complications of thyroid dysfunction (atrial fibrillation, myocardial infarction, death for cardiac reasons) and to minimize iatrogenic complications (tertiary prevention). Examples of tertiary prevention are radioiodine-therapy of Graves' disease in patients who have an increased risk of relapse after antithyroid drugs (ATD), radioiodine therapy of ouvert or subclinical hyperthyroidism, and radioiodine therapy of large goiters in older patients or in patients suffering from a relevant co-morbidity. A cost-effectiveness-analysis for different therapeutic strategies of Graves' disease has been published using a lifelong time-horizon. The ablative radioiodine dose-regime is cost-effective as a first line therapy if the risk of relapse after ATD exceeds 60%. Cost-minimization-analysis, comparing resection of goiter and radioiodine, has shown lower cost of radioiodine therapy for toxic multinodular goiter up to 100 ml and for Graves' disease up to 60 ml goiter volume. Medical aspects (volume of goiter, uptake of nodules, regressive goiter, suspicion on malignancy, patients' age, co-morbidity, patients' decision) remain decisive for the choice of treatment. (orig.)

  5. Famille Rose Porcelain and Nontoxic Famille-Rose Pigments%粉彩瓷与无毒粉彩颜料的研究

    Institute of Scientific and Technical Information of China (English)

    曹春娥; 陈云霞; 卢希龙

    2011-01-01

    Famille-rose porcelain, one of the famous traditional ceramic genres from Jingdezhen, was introduced briefly in this study. The results and status quo of famille-rose ceramic research in the fields of decorative art, archaeometry and lead reduction were overviewed. New ideas for developing nontoxic famille-rose pigments were put forward, which was necessary for the continuation and furtherance of the famille-rose ceramic heritage. Our group's work on the preparation of nontoxic low-temperature fluxes, lead-free and arsenic-free glassy white, famille-rose colorants with stable color generation by various wet-chemical methods, and new nontoxic famille-rose pigments was described. Finally, the application trends of nontoxic famille-rose pigments were predicted.%对景德镇传统名瓷-粉彩瓷和传统粉彩颜料做了简单介绍,概述了传统粉彩颜料在降铅达标方面的研究成果与现状,提出了要传承、发展粉彩瓷必须使传统粉彩颜料无毒化的新理念.文中主要从无公害低温熔剂的研制、无毒新型玻璃白的研制、采用多种湿化学法制备呈色稳定的粉彩色剂、无毒粉彩颜料的制备等方面叙述了本课题组的研究,并对无毒粉彩颜料的应用前景进行了展望.

  6. Brevetoxin Depuration in Shellfish via Production of Non-toxic Metabolites: Consequences for Seafood Safety and the Environmental Fate of Biotoxins

    OpenAIRE

    Naar, J.; Kubanek, J.; Weidner, A.; Flewelling, L.; Bourdelais, A.; Steidinger, K.; Baden, D. G.

    2004-01-01

    During blooms of the dinoflagellate Karenia brevis, filter-feeders such as oysters and clams bioaccumulate brevetoxins, often to levels that are toxic to humans. In controlled aquarium experiments, we exposed live oysters to bloom levels of toxic K. brevis, followed by 10 weeks of exposure to non-toxic microalgae. Oysters were harvested weekly and analyzed for brevetoxins and brevetoxin metabolites to quantify toxin bioaccumulation and depuration. All of the PbTx-2 concentrated by oysters was...

  7. Benign lymphoepithelial lesion arising in the parotid gland

    Energy Technology Data Exchange (ETDEWEB)

    Park, Rae Chung; Choi, Soon Chul; Park, Tae Won; Yoo, Dong Soo [Dept. of Oral and Maxillofacial Radiology, College of Dentistry, Seoul National University, Seoul (Korea, Republic of)

    1996-08-15

    The authors diagnosed a 33 years old female as benign lymphoepithelial lesion after undergoing clinical, radiological and histopathological examinations and the characteristics were as follows : 1. Clinically, the patient complained of painless bilateral swelling of the parotid glands and dryness of the palate. Rheumatoid facor was detected in her serum. 2. Sialograms showed punctuate or globular collections of contrast media distributed evenly throughout the parotid gland s in so-called 'cherry blossom' or 'fearless fruit-laden tree' appearance. 3. A salivary gland scan showed no uptake of radioisotopes by the parotid glands. 4. At T1-weighted imaging of PNS MRI, the lesions had the same signal intensity as the rest of the gland. At T2-weighted imaging, the lesion could be seen as high signal intensity 1.3 cm and 2.1 cm in diameter in the left and the right parotid gland respectively. 5. Ultrasonogram showed sonolucent lesions 20 X 15 mm and 17 X 14 mm in size in the lower part of the left parotid gland an d another 18 X 11 mm in size in the lower part of the parotid gland AS well as many other small sonolucent lesions. 6. Histopathologically, lymphocytic infiltration replacing the normal acini and lymphoid follicles containing germinal centers could be seen. Epimyoepithelial islands were scattered throughout the lesion and benign lymphoepithelial cysts were also observed.

  8. Benign metastasizing leiomyoma in triple location: lungs, parametria and appendix

    Science.gov (United States)

    Raś, Renata; Książek, Mariusz; Skręt-Magierło, Joanna; Kąziołka, Wojciech; Fudali, Ludmiła; Filipowska, Justyna; Skręt, Andrzej

    2016-01-01

    Benign metastasizing leiomyoma (BML) usually are situated in one organ, most often in lungs. BML patients typically have a history of uterine leiomyoma treated with hysterectomy, myomectomy or subtotal hysterectomy. The aim of the study was to present the case of a 53-year-old woman with triple location in the lungs, parametria and appendix. She had undergone a myomectomy 26 years earlier. In 2015, she was admitted to the surgical department because of abdominal pain, whereupon a cholecystectomy was performed. CT scans showed pelvic mass with pulmonary metastasis. Upon discharge the patient was referred to the Gynecology Clinic, where a laparotomy was performed. The intraoperative findings were: 1) uterus with multiple leiomyomas, 2) four tumors in the parametria, 3) tumor connected to the appendix. A subtotal hysterectomy, with a bilateral salpingo-oophorectomy, removal of the tumors from the parametria and appendectomy was performed. Pathology confirmed the diagnosis based on morphology and immunohistochemical staining (strongly positive for estrogen receptors and SMA, while Ki67 was very low, below 1%). Upon postoperative recovery, the patient was referred to the Thoracic Surgery Department. During the thoracotomy, multiple nodes, surrounded by lung parenchyma, were revealed. Wedge resection was performed, for localized pulmonary lesions, and sent for pathological examination. The final pathological diagnosis was benign metastasizing leiomyomatosis. In conclusion, the triple location of BML could possibly be a result of a parallel different metastasizing mechanism, although it is impossible to exclude one mechanism, which may be the cause of the metastases in three locations.

  9. Environmentally benign production of biodiesel using heterogeneous catalysts.

    Science.gov (United States)

    Hara, Michikazu

    2009-01-01

    Fuelling the future: The production of esters of higher fatty acids from plant materials is of great interest for the manufacture of biodiesel. Heterogeneous catalysts can provide new routes for the environmentally benign production of biodiesel. Particulate heterogeneous catalysts can be readily separated from products following reaction allowing the catalyst to be reused, generating less waste, and consuming less energy. Diesel engines are simple and powerful, and exhibit many advantages in energy efficiency and cost. Therefore, the production of higher fatty acid esters from plant materials has become of interest in recent years for the manufacture of biodiesel, a clean-burning alternative fuel. The industrial production of biodiesel mostly proceeds in the presence of "soluble" catalysts such as alkali hydroxides and liquid acids. A considerable amount of energy is required for the purification of products and catalyst separation, and furthermore these catalysts are not reusable. This process results in substantial energy wastage and the production of large amounts of chemical waste. Particulate heterogeneous catalysts can be readily separated from products following reaction, allowing the catalyst to be reused and consuming less energy. This Minireview describes the environmentally benign production of biodiesel using heterogeneous catalysts such as solid bases, acid catalysts, and immobilized enzymes. PMID:19180600

  10. Benign metastasizing leiomyoma in triple location: lungs, parametria and appendix

    Science.gov (United States)

    Raś, Renata; Książek, Mariusz; Skręt-Magierło, Joanna; Kąziołka, Wojciech; Fudali, Ludmiła; Filipowska, Justyna; Skręt, Andrzej

    2016-01-01

    Benign metastasizing leiomyoma (BML) usually are situated in one organ, most often in lungs. BML patients typically have a history of uterine leiomyoma treated with hysterectomy, myomectomy or subtotal hysterectomy. The aim of the study was to present the case of a 53-year-old woman with triple location in the lungs, parametria and appendix. She had undergone a myomectomy 26 years earlier. In 2015, she was admitted to the surgical department because of abdominal pain, whereupon a cholecystectomy was performed. CT scans showed pelvic mass with pulmonary metastasis. Upon discharge the patient was referred to the Gynecology Clinic, where a laparotomy was performed. The intraoperative findings were: 1) uterus with multiple leiomyomas, 2) four tumors in the parametria, 3) tumor connected to the appendix. A subtotal hysterectomy, with a bilateral salpingo-oophorectomy, removal of the tumors from the parametria and appendectomy was performed. Pathology confirmed the diagnosis based on morphology and immunohistochemical staining (strongly positive for estrogen receptors and SMA, while Ki67 was very low, below 1%). Upon postoperative recovery, the patient was referred to the Thoracic Surgery Department. During the thoracotomy, multiple nodes, surrounded by lung parenchyma, were revealed. Wedge resection was performed, for localized pulmonary lesions, and sent for pathological examination. The final pathological diagnosis was benign metastasizing leiomyomatosis. In conclusion, the triple location of BML could possibly be a result of a parallel different metastasizing mechanism, although it is impossible to exclude one mechanism, which may be the cause of the metastases in three locations. PMID:27582687

  11. Parotidectomy for benign parotid tumors: An aesthetic approach

    International Nuclear Information System (INIS)

    The sternocleidomastoid (SCM) partial thickness muscle flap is among the various methods described to correct parotidectomy defects, but its indications and limitations are not clearly demonstrated in several reports. This study was done to test the aesthetic outcome of this method, its indications and limitations. The technique was combined with a face lift incision to further improve the outcome. Patients and methods: At the National Cancer Institute, Cairo University, Egypt, 23 patients presenting with benign tumors underwent parotidectomy, 19 had superficial parotidectomy and four had total parotidectomy done. The superiorly based (SCM) muscle flap was used to correct the contour deformity. The aesthetic result was evaluated by assessing arid scoring the overall appearance of the scar, the degree of symmetry of the reconstructed parotid region and the site of the donor muscle to their contralateral normal sides. The overall aesthetic appearance was then calculated by the summation of the scores of the latter three parameters. Patients' satisfaction was assessed by patients' questionnaire. Result: The overall aesthetic appearance was good in 17 patients, and moderate in six patients. 16/23 patients had an overall deep satisfaction with the result. The residual hollowness of the parotid following reconstruction of the total parotidectomy defect and the poor quality of scars were the main reasons affecting the aesthetic outcome. Conclusion: Superficial parotidectomy through facelift incision with immediate reconstruction with superiorly based partial thickness SCM flap allows adequate resection of most benign parotid tumors with a satisfactory aesthetic outcome and minimal donor site morbidity

  12. Benign Proliferative Breast Lesions and Risk of Cancer

    Directory of Open Access Journals (Sweden)

    Serap Erel

    2010-06-01

    Full Text Available Benign breast lesions (BBL includes a wide variety of histologic entities, which have been broadly classified into non-proliferative lesions, proliferative lesions without atypia, and hyperplasia with atypia. With the increased use of mammography, more benign lesions are being detected, and in order to estimate the risk of breast cancer for specific histologic categories is of great importance to guide clinical management. Women with proliferative lesions without atypia are at slightly increased risk of subsequent breast cancer, whereas women with proliferative lesions with atypia have a higher risk. The risk is 1.5- 2-fold in women with proliferative lesions without atypia, 4-5-fold in women with proliferative lesions with atypia, and 8-10 fold in women with ductal carcinoma in situ. Age at diagnosis of BBL, menopausal status, family history of breast cancer in a first-degree relative, and time since BBL diagnosis on risk of breast cancer are important for risk evaluation. [Archives Medical Review Journal 2010; 19(3.000: 155-167

  13. Benign multicystic mesothelioma: a case report of three sisters

    Directory of Open Access Journals (Sweden)

    Thomas Rutherford

    2009-12-01

    Full Text Available Benign multicystic mesothelioma (BMCM is a rare tumor of the abdomen-peritoneum of unknown etiology. This benign tumor was initially described by Plaut in 1928 when he observed loose cysts in the pelvis during a surgery for a uterine leiomyoma.2 The mesothelial origin was later confirmed by electron micro-scopy by Mennemeyer and Smith in 1979.3 To date, there are approximately 140 cases of BMCM reported in the literature.4 This disease primarily occurs in pre-menopausal women and is associated with a history of pelvic inflammatory disease, prior abdominal surgery, and endometriosis.4,5 The pathogenesis of this disease remains controversial, with possible etiologies including a neoplastic versus a reactive process.5 In the literature, a few case reports discuss a possible genetic or familial association with BMCM.6 Specifically, one report describes a man with familial Mediterranean fever who developed BMCM. Although familial Mediter-ranean fever is associated with malignant mesothelioma, he had only BMCM, and did not suffer from malignant mesothelioma.6 A genetic evaluation and chromosomal analysis were not able to identify a specific genetic cause of the family’s pattern of disease. This case report describes two female siblings diagnosed with BMCM. In addition, a third sister also had findings consistent with BMCM, however, the discrete histological diagnosis was never confirmed.

  14. An insidious risk factor for cardiovascular disease: benign prostatic hyperplasia.

    Science.gov (United States)

    Karatas, Omer Faruk; Bayrak, Omer; Cimentepe, Ersin; Unal, Dogan

    2010-10-29

    Patients with benign prostatic hyperplasia (BPH) and lower urinary tract symptoms (LUTSs) have a considerably higher prevalence of cardiovascular disease (CVD) than the general population in old age. Many hypotheses have been created to explain traditional clinical risk factors of CVD, including age, male gender, cigarette smoking, inheritance, high blood pressure (BP), obesity, elevated fasting plasma glucose, diabetes mellitus, dyslipidemia, decreased physical activity and metabolic syndrome; or nontraditional risk factors such as oxidative stress, inflammation, vascular calcification, malnutrition, homocysteine and genetic variation. Although these risk factors are important in CVD pathophysiology and clinical presentation, there is still no single theory sufficient to provide an adequate explanation for all the properties of CVD. We speculate that by causing nocturia-induced sleep disturbances, BP variability, increased sympathetic activity, non-dipping BP variations; BPH may be an insidious risk factor for CVD. Benign prostate hyperplasia may be related to increased BP, coronary ischemic hearth disease or other cardiovascular pathologic conditions. This attention on BPH may produce a new approach to the diagnosis and treatment of CVD. Although the underlying mechanisms are still exactly unclear, further prospective randomized controlled studies are needed to identify if patients with BPH/LUTS is higher risk for CVD. PMID:19359054

  15. Conservative resection for benign tumors of the proximal pancreas

    Institute of Scientific and Technical Information of China (English)

    Hai Huang; Xin Dong; Shun-Liang Gao; Yu-Lian Wu

    2009-01-01

    AIM:To evaluate the safety and long-term prognosis of conservative resection (CR) for benign or borderline tumor of the proximal pancreas.METHODS:We retrospectively analyzed 20 patients who underwent CR at the Second Affiliated Hospital of Zhejiang University School of Medicine between April 2000 and October 2008.For pancreaticojejunostomy,a modified invagination method,continuous circular invaginated pancreaticojejunostomy (CCI-PJ) was used.Modified continuous closed lavage (MCCL) was performed for patients with pancreatic fistula.RESULTS:The indications were:serous cystadenomas in eight patients,insulinomas in six,non-functional islet cell tumors in three and solid pseudopapillary tumors in three.Perioperative mortality was zero and morbidity was 25%.Overall,pancreatic fistula was present in 25% of patients.At a mean follow up of 42.7 mo,all patients were alive with no recurrence and no new-onset diabetes mellitus or exocrine dysfunction.CONCLUSION:CR is a safe and effective procedure for patients with benign tumors in the proximal pancreas,with careful CCI-PJ and postoperative MCCL.

  16. Holmium-166 therapy of malignant and benign diseases

    Energy Technology Data Exchange (ETDEWEB)

    Park, C.H. [Ajou Univ. School of Medicine, Suwon (Korea)

    1999-07-01

    Holmium-166 (Ho-166), one of the lanthanide radionuclides and produced upon neutron irradiation of naturally abundant Ho-165, is an almost ideal radionuclide for therapeutic purposes. The reasons for this are: (1) it is a strong beta emitter (Emax = 1.86 MeV) with maximum range in soft-tissue of 8.4 mm, (2) it has a short physical half-life of 26.9 hours, (3) it emits a gamma photon (81 keV, 5.4%) that can be used for external imaging of post-therapy monitoring purpose. Clinical trials of Ho-166 therapy for various malignancies and benign conditions are under way in Korea, {sup 166}Ho(NO{sub 3}) solution is applied into the balloon following percutaneous transfemoral coronary angioplasty (PTCA) in an attempt to inhibit neointimal hyperplasia incident to ballooning injury. Chitosan obtained by deacetylation of naturally abundant chitin is complexed with Ho-166 by mixing acidic chitosan solution at a room temperature with higher than 99% labelling yield. The Ho-166 complex is stable in vitro and vivo. Another benign condition, rheumatoid joint disease, is treated by local administration of the agent into the knee joint for radionuclide synovectomy. Malignant conditions being treated with Ho-166-CHICO (chitosan complex) include cystic brain tumours, malignant ascites and pleural effusion, hepatocellular carcinomas, recurrent melanoma and recurrent rectal carcinomas. Our clinical experience with Ho-166 or Ho-166-CHICO therapy is presented. (orig.)

  17. ENVIRONMENTAL BENIGN MITIGATION OF MICROBIOLOGICALLY INFLUENCED CORROSION (MIC)

    International Nuclear Information System (INIS)

    The overall program objective is to develop and evaluate environmental benign agents or products that are effective in the prevention, inhibition, and mitigation of microbially influenced corrosion (MIC) in the internal surfaces of metallic natural gas pipelines. The goal is one or more environmental benign, a.k.a. ''green'' products that can be applied to maintain the structure and dependability of the natural gas infrastructure. The technical approach for this quarter has been to evaluate a number of real world pipeline sources for microbial communities or consortia that form biofilms under laboratory simulations of pipelines. The microorganisms will be identified using classical and molecular microbiological tools and there activities under pipeline simulating conditions will be studied. The quarter saw the collection of the first samples from the industry for isolation of the microorganisms, as well as the design and construction of the laboratory-scale pipeline simulators. Methods development for MIC and biofilm microbial isolations and identification, and laboratory design and construction of pipeline simulators were the only activities. At this stage of the study (first quarter), only preliminary results are available

  18. MR features of physiologic and benign conditions of the ovary

    International Nuclear Information System (INIS)

    In reproductive women, various physiologic conditions can cause morphologic changes of the ovary, resembling pathologic conditions. Benign ovarian diseases can also simulate malignancies. Magnetic resonance imaging (MRI) can play an important role in establishing accurate diagnosis. Functional cysts should not be confused with cystic neoplasms. Corpus luteum cysts typically have a thick wall and are occasionally hemorrhagic. Multicystic lesions that may mimic cystic neoplasms include hyperreactio luteinalis, ovarian hyperstimulation syndrome, and polycystic ovary syndrome. Recognition of clinical settings can help establish diagnosis. In endometrial cysts, MRI usually provides specific diagnosis; however, decidual change during pregnancy should not be confused with secondary neoplasm. Peritoneal inclusion cysts can be distinguished from cystic neoplasms by recognition of their characteristic configurations. Ovarian torsion and massive ovarian edema may mimic solid malignant tumors. Recognition of normal follicles and anatomic structures is useful in diagnosing these conditions. In pelvic inflammatory diseases, transfascial spread of the lesion should not be confused with invasive malignant tumors. Radiologic identification of abscess formation can be a diagnostic clue. Many benign tumors, including teratoma, Brenner tumor, and sex-cord stromal tumor, frequently show characteristic MRI features. Knowledge of MRI features of these conditions is essential in establishing accurate diagnosis and determining appropriate treatment. (orig.)

  19. Benign skin tumors in association with systemic malignancy

    Directory of Open Access Journals (Sweden)

    K. Didem Yazganoğlu

    2013-12-01

    Full Text Available There are various types of benign skin tumors in association with the complex nature of the skin. A minor part of them may be associated with visceral malignancies. This review focuses on the benign skin tumors that are described to have well-known associations with systemic malignancies or those with controversial associations. These tumors and the associated conditions are as follows: seborrheic keratosis/ Leser-Trélat sign, lentigo simplex/Peutz Jeghers and Carney syndrome, sebaceous tumors/ Muir-Torre syndrome, fibrofolliculoma- trichodiskoma/ Birt-Hogg-Dubé syndrome, trichoepitheliomacylindroma- spiradenoma/ Brooke-Spiegler syndrome, leiomyoma/multiple cutaneous and uterin leiomyomatosis syndrome, glomeruloid hemangioma/ POEMS syndrome, venous malformation/ Maffucci syndrome, mucosal neuroma/ multiple endocrine neoplasia type 2B, juvenile xanthogranuloma/ juvenile chronic myeloid leukemia. It is important to know the skin tumors related with visceral malignancies in part of a syndrome or in association with a sign as this may yield an earlier recognition of these malignancies.

  20. MR features of physiologic and benign conditions of the ovary

    Energy Technology Data Exchange (ETDEWEB)

    Tamai, Ken; Saga, Tsuneo; Kido, Aki; Kataoka, Masako; Umeoka, Shigeaki; Togashi, Kaori [Kyoto University, Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto (Japan); Koyama, Takashi [Kyoto University Hospital, Department of Radiology, Kyoto (Japan); Fujii, Shingo [Kyoto University, Department of Gynecology and Obstetrics, Graduate School of Medicine, Kyoto (Japan)

    2006-12-15

    In reproductive women, various physiologic conditions can cause morphologic changes of the ovary, resembling pathologic conditions. Benign ovarian diseases can also simulate malignancies. Magnetic resonance imaging (MRI) can play an important role in establishing accurate diagnosis. Functional cysts should not be confused with cystic neoplasms. Corpus luteum cysts typically have a thick wall and are occasionally hemorrhagic. Multicystic lesions that may mimic cystic neoplasms include hyperreactio luteinalis, ovarian hyperstimulation syndrome, and polycystic ovary syndrome. Recognition of clinical settings can help establish diagnosis. In endometrial cysts, MRI usually provides specific diagnosis; however, decidual change during pregnancy should not be confused with secondary neoplasm. Peritoneal inclusion cysts can be distinguished from cystic neoplasms by recognition of their characteristic configurations. Ovarian torsion and massive ovarian edema may mimic solid malignant tumors. Recognition of normal follicles and anatomic structures is useful in diagnosing these conditions. In pelvic inflammatory diseases, transfascial spread of the lesion should not be confused with invasive malignant tumors. Radiologic identification of abscess formation can be a diagnostic clue. Many benign tumors, including teratoma, Brenner tumor, and sex-cord stromal tumor, frequently show characteristic MRI features. Knowledge of MRI features of these conditions is essential in establishing accurate diagnosis and determining appropriate treatment. (orig.)

  1. Benign occipital lobe seizures: Natural progression and atypical evolution

    Directory of Open Access Journals (Sweden)

    Prithika Chary

    2013-01-01

    Full Text Available Benign occipital seizure syndromes are benign childhood epilepsy syndromes and are mainly of two types, Panayiotopoulos syndrome, an autonomic epilepsy and idiopathic childhood occipital epilepsy of Gastaut (ICOE-G including the idiopathic photosensitive occipital lobe epilepsy. Although both these types are categorized as occipital seizures, they are distinct in presentation and management. They can also be tricky to diagnose as visual symptoms may not always be the presenting feature and it is also not very easy to elicit visual hallucinations during history taking. These seizures have a good response to treatment; however, there could be atypical evolution and refractoriness to treatment especially with ICOE-G. We describe three children who presented with visual and non-visual symptoms and the electroencephalography (EEG in all the three cases showed occipital paroxysms. We have emphasized the clues in the clinical history and EEG leading to the diagnosis of these distinct epilepsy syndromes. We have also discussed the natural course of these epilepsy syndromes with some atypical evolution, which clinicians need to be aware of during treatment of these children.

  2. ENVIRONMENTAL BENIGN MITIGATION OF MICROBIOLOGICALLY INFLUENCED CORROSION (MIC)

    Energy Technology Data Exchange (ETDEWEB)

    J.R. Paterek; G. Husmillo; V. Trbovic

    2003-01-01

    The overall program objective is to develop and evaluate environmental benign agents or products that are effective in the prevention, inhibition, and mitigation of microbially influenced corrosion (MIC) in the internal surfaces of metallic natural gas pipelines. The goal is one or more environmental benign, a.k.a. ''green'' products that can be applied to maintain the structure and dependability of the natural gas infrastructure. The technical approach for this quarter were isolation and cultivation of MIC-causing microorganisms from corroded pipeline samples, optimizing parameters in the laboratory-scale corrosion test loop system and testing the effective concentrations of Capsicum sp. extracts to verify the extent of corrosion on metal coupons by batch culture method. A total of 22 strains from the group of heterotrophic, acid producing, denitrifying and sulfate reducing bacteria were isolated from the gas pipeline samples obtained from Northern Indiana Public Service Company in Trenton, Indiana. They were purified and will be sent out for identification. Bacterial strains of interest were used in antimicrobial screenings and test loop experiments. Parameters for the laboratory-scale test loop system such as gas and culture medium flow rate; temperature; inoculation period; and length of incubation were established. Batch culture corrosion study against Desulfovibrio vulgaris showed that one (S{sub 1}M) out of the four Capsicum sp. extracts tested was effective in controlling the corrosion rate in metal coupons by 33.33% when compared to the untreated group.

  3. ENVIRONMENTAL BENIGN MITIGATION OF MICROBIOLOGICALLY INFLUENCED CORROSION (MIC)

    Energy Technology Data Exchange (ETDEWEB)

    J.R. Paterek

    2002-03-01

    The overall program objective is to develop and evaluate environmental benign agents or products that are effective in the prevention, inhibition, and mitigation of microbially influenced corrosion (MIC) in the internal surfaces of metallic natural gas pipelines. The goal is one or more environmental benign, a.k.a. ''green'' products that can be applied to maintain the structure and dependability of the natural gas infrastructure. The technical approach for this quarter has been to evaluate a number of real world pipeline sources for microbial communities or consortia that form biofilms under laboratory simulations of pipelines. The microorganisms will be identified using classical and molecular microbiological tools and there activities under pipeline simulating conditions will be studied. The quarter saw the collection of the first samples from the industry for isolation of the microorganisms, as well as the design and construction of the laboratory-scale pipeline simulators. Methods development for MIC and biofilm microbial isolations and identification, and laboratory design and construction of pipeline simulators were the only activities. At this stage of the study (first quarter), only preliminary results are available.

  4. ENVIRONMENTAL BENIGN MITIGATION OF MICROBIOLOGICALLY INFLUENCED CORROSION (MIC)

    Energy Technology Data Exchange (ETDEWEB)

    J.R. Paterek; G. Husmillo

    2002-11-01

    The overall program objective is to develop and evaluate environmental benign agents or products that are effective in the prevention, inhibition, and mitigation of microbially influenced corrosion (MIC) in the internal surfaces of metallic natural gas pipelines. The goal is one or more environmental benign, a.k.a. ''green'' products that can be applied to maintain the structure and dependability of the natural gas infrastructure. The technical approach for this quarter were monitoring the development of Desulfovibrio species biofilm using the continuous flow cell system, evaluation of pepper compounds by microtiter plate assay for mitigating and inhibiting biofilm formation, and testing the effective concentrations to verify the extent of corrosion on metal coupons. Biofilm formation of Desulfovibrio vulgaris and D. desulfuricans was monitored and documented over a 7-day period. The use of a continuous flow cell system proved to be efficient and non-destructive in studying biofilm growth. Live/Dead BacLight was an efficient stain to determine cell viability. The extracts showed 9-25% biofilm formation inhibition against the two organisms, and 18-19% activity in detaching the already formed biofilm. Preliminary data were obtained on the extent of corrosion of metal coupons when treated with pepper extracts as against the untreated ones. Confirmatory tests are underway. A presentation was prepared and give at the US DOE NETL meeting on gas and petroleum infrastructure. The presentation is include as an addition to this report.

  5. ENVIRONMENTALLY BENIGN MITIGATION OF MICROBIOLOGICALLY INFLUENCED CORROSION (MIC)

    Energy Technology Data Exchange (ETDEWEB)

    J. Robert Paterek; Gemma Husmillo

    2002-07-01

    The overall program objective is to develop and evaluate environmental benign agents or products that are effective in the prevention, inhibition, and mitigation of microbially influenced corrosion (MIC) in the internal surfaces of metallic natural gas pipelines. The goal is one or more environmental benign, a.k.a. ''green'' products that can be applied to maintain the structure and dependability of the natural gas infrastructure. Capsicum sp. extracts and pure compounds were screened for their antimicrobial activity against MIC causing bacteria. Studies on the ability of these compounds to dissociate biofilm from the substratum were conducted using microtiter plate assays. Tests using laboratory scale pipeline simulators continued. Preliminary results showed that the natural extracts possess strong antimicrobial activity being comparable to or even better than the pure compounds tested against strains of sulfate reducers. Their minimum inhibitory concentrations had been determined. It was also found that they possess bactericidal properties at minimal concentrations. Biofilm dissociation activity as assessed by microtiter plate assays demonstrated varying degrees of differences between the treated and untreated group with the superior performance of the extracts over pure compounds. Such is an indication of the possible benefits that could be obtained from these natural products. Confirmatory experiments are underway.

  6. The Clinical and Neurophysiological Features of Epileptic Syndromes Associated with Benign Focal Epileptiform Discharges of Childhood

    OpenAIRE

    N. A. Ermolaenko; I A Buchneva; Zakharova, E. I.

    2014-01-01

    Benign focal epileptiform discharge of childhood (BFEDC) is an age-dependent pattern determined in electroencephalograms (EEGs), which is associated with idiopathic benign focal epilepsy (BFE). Studies of BFE revealed symptomatic phenocopies in patients with cerebral struc- tural abnormalities in such conditions as infantile cerebral palsy and malformations. Some arguments against the «benign» nature of BFEDC are presented, since BFEDC may impair various cognitive functions and behavior (e.g....

  7. Multiple and bilateral benign cystic teratomas of ovary with broad ligament leiomyoma: a case report

    OpenAIRE

    Choukimath S.M; Ramalingappa C.A

    2012-01-01

    Background: Benign cystic teratoma is the most common tumor of ovary. Though bilateralism is seen in 10-15% of the cases, bilateral and multiple benign cystic teratomas are rare and very few cases have been reported in the literature. Aim: We present a case of bilateral and multiple benign cystic teratomas with a broad ligament leiomyoma. Case findings: A 38 –year- old female presented with lower abdominal pain of 5 months duration. Ultrasonography of abdomen showed bilateral multiple adnexal...

  8. Ultrasmall cationic superparamagnetic iron oxide nanoparticles as nontoxic and efficient MRI contrast agent and magnetic-targeting tool

    Directory of Open Access Journals (Sweden)

    Uchiyama MK

    2015-07-01

    thigh by a magnet showing its potential as magnetically targeted carriers of therapeutic and diagnostic agents. Summarizing, cationic ultrasmall superparamagnetic iron oxide nanoparticles are nontoxic and efficient magnetic resonance imaging contrast agents useful as platform for the development of new materials for application in theranostics.Keywords: cationic USPIOs, MRI, contrast agent, magnetic targeting, in vivo toxicity, intravital microscopy

  9. Breast cancer stem-like cells are inhibited by a non-toxic aryl hydrocarbon receptor agonist.

    Directory of Open Access Journals (Sweden)

    Gérald J Prud'homme

    Full Text Available BACKGROUND: Cancer stem cells (CSCs have increased resistance to cancer chemotherapy. They can be enriched as drug-surviving CSCs (D-CSCs by growth with chemotherapeutic drugs, and/or by sorting of cells expressing CSC markers such as aldehyde dehydrogenase-1 (ALDH. CSCs form colonies in agar, mammospheres in low-adherence cultures, and tumors following xenotransplantation in Scid mice. We hypothesized that tranilast, a non-toxic orally active drug with anti-cancer activities, would inhibit breast CSCs. METHODOLOGY/FINDINGS: We examined breast cancer cell lines or D-CSCs generated by growth of these cells with mitoxantrone. Tranilast inhibited colony formation, mammosphere formation and stem cell marker expression. Mitoxantrone-selected cells were enriched for CSCs expressing stem cell markers ALDH, c-kit, Oct-4, and ABCG2, and efficient at forming mammospheres. Tranilast markedly inhibited mammosphere formation by D-CSCs and dissociated formed mammospheres, at pharmacologically relevant concentrations. It was effective against D-CSCs of both HER-2+ and triple-negative cell lines. Tranilast was also effective in vivo, since it prevented lung metastasis in mice injected i.v. with triple-negative (MDA-MB-231 mitoxantrone-selected cells. The molecular targets of tranilast in cancer have been unknown, but here we demonstrate it is an aryl hydrocarbon receptor (AHR agonist and this plays a key role. AHR is a transcription factor activated by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD, polycyclic aromatic hydrocarbons and other ligands. Tranilast induced translocation of the AHR to the nucleus and stimulated CYP1A1 expression (a marker of AHR activation. It inhibited binding of the AHR to CDK4, which has been linked to cell-cycle arrest. D-CSCs expressed higher levels of the AHR than other cells. Knockdown of the AHR with siRNA, or blockade with an AHR antagonist, entirely abrogated the anti-proliferative and anti-mammosphere activity of tranilast

  10. DIAGNOSIS AND MANAGEMENT BENIGN PAROXYSMAL POSITIONAL VERTIGO (BPPV

    Directory of Open Access Journals (Sweden)

    Putu Prida Purnamasari

    2013-05-01

    Full Text Available Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Benign Paroxysmal Positional Vertigo (BPPV is one of the most frequent Neurotology disorders. Benign Paroxysmal Positional Vertigo is a vestibular disorder in which 17% -20% of patients complained of vertigo. In the general population the prevalence of BPPV is between 11 to 64 per 100,000 (prevalence 2.4%. Benign Paroxysmal Positional Vertigo is a disturbance in the inner ear with positional vertigo symptoms that occur repeatedly with the typical nystagmus paroxysmal. The disorders can be caused either by canalithiasis or cupulolithiasis and could in theory be about three semicircular canals, although superior canal (anterior is very rare. The most common is the form of the posterior canal, followed by a lateral. The diagnosis of BPPV can be enforced based on history and physical examination, including some tests such as Dix-Hallpike test, caloric test, and Supine Roll test. The diagnosis of BPPV is also classified according to the types of channels. Management of BPPV include non-pharmacological, pharmacological and operations. Treatment is often used non-pharmacological includes several maneuvers such as Epley maneuver, Semount maneuver, Lempert maneuver, forced prolonged position and Brandt-Daroff exercises. /* 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;}

  11. Does thyroid stunning exist? A model with benign thyroid disease

    Energy Technology Data Exchange (ETDEWEB)

    Sabri, O.; Zimny, M.; Schreckenberger, M.; Meyer-Oelmann, A.; Reinartz, P.; Buell, U. [Clinic of Nuclear Medicine, Aachen Univ. of Technology (Germany)

    2000-11-01

    With regard to the treatment of differentiated non-medullary thyroid carcinoma, there is controversy over whether radiation from a diagnostic radioiodine ({sup 131}I) application really does have a suppressive effect on the uptake of subsequent therapeutic {sup 131}I (so-called thyroid stunning). However, inherent difficulties in exact remnant/metastatic tissue volumetry make it difficult to quantify how much diagnostic {sup 131}I is actually absorbed (absorbed energy dose) and hence to decide whether a threshold absorbed dose exists beyond which such stunning would occur. Since in benign thyroid disease the target volume can be readily quantified by ultrasonography, we sought to determine definitely whether stunning of thyroid cells occurs upon a second application of radioiodine 4 days following the first one. We therefore studied 171 consecutive patients with benign thyroid disease (diffuse goitre, Graves' disease, toxic nodular goitre) who received two-step {sup 131}I therapy during a single in-patient stay. For application of both calculated {sup 131}I activities we performed kinetic dosimetry of {sup 131}I uptake, effective half-life and absorbed dose. At the second application, patients showed significant stunning (a 31.7% decrease in {sup 131}I uptake, from 34.7%{+-}15.4% at first application to 23.7%{+-}12.3% at second application, P<0.0005) without a significant difference in effective half-life (4.9{+-}1.3 vs 5.0{+-}1.7 days, P>0.2). ANOVA showed that the extent of stunning was influenced significantly only by the absorbed energy dose at first application (F=13.5, P<0.0005), while first-application {sup 131}I activity, target volume, gender and thyroid function had no influence (all F{<=}0.71, all P>0.4). There was no significant correlation between extent of thyroid stunning and first-application {sup 131}I activity (r=0.07, P>0.3), whereas there was a highly significant correlation between thyroid stunning and first absorbed energy dose (r=0.64, P

  12. Gleason Score 6 - Prostate Cancer or Benign Variant?

    Science.gov (United States)

    Knüchel, Ruth

    2015-01-01

    The leading motivation behind wanting to call a 'malignant' prostate lesion 'benign' is the evidence of indolent prostate cancer that is not associated with a fatal outcome and in part makes therapeutic measures such as surgery and radiotherapy appear like overtreatment for some or possibly the majority of such patients. The present article reviews the definitions of 'precancerous lesion' and 'cancer' from a histopathologic point of view as the basis and gold standard for diagnosis. It is clear that with the 2 modifications implemented since its first publication, the Gleason score as the grading system for prostate cancer has shifted towards a low malignant subgroup diagnosed as Gleason 6. The recommendation of the International Society of Urological Pathology to change the Gleason score to a 5-tiered system, starting with grade group 1, is presented here, and may help doctor-patient communication especially in the active surveillance setting. PMID:26633167

  13. Lacunar infarcts: no black holes in the brain are benign.

    Science.gov (United States)

    Norrving, Bo

    2008-08-01

    Lacunar infarcts--small subcortical infarcts that result from occlusion of a single penetrating artery--account for about one quarter of all ischaemic strokes. However, there are many diagnostic pitfalls, and causes other than penetrating small vessel disease in up to one third of cases. Recent studies have shown that the prognosis after lacunar infarcts is not benign; the risk of recurrent stroke is no lower than for other ischaemic stroke subtypes, and there is an increased risk for cognitive decline, dementia and death in the long term. Furthermore, silent small vessel disease in the brain at the time of an index stroke has significant prognostic implications. In the acute phase, response to intravenous thrombolysis appears to be similar to other subtypes of ischaemic strokes. Antiplatelet drugs, careful blood pressure control, statins and modification of lifestyle risk factors are key elements in secondary prevention after lacunar infarcts. PMID:18644908

  14. ROLE OF CELECOXIB IN BENIGN BREAST DISEASE: RANDOMISED CONTROL TRIAL

    Directory of Open Access Journals (Sweden)

    Soumen Das

    2012-06-01

    Full Text Available Benign Breast Disease (BBD, commonest cause of morbidity in females due to breast diseases, still offers therapeutic challenge. Several drug therapies (with Evening Primrose Oil, Danazol etc have been tried, but none made gold standard. Reports on effect of Cox-2 inhibitors are scarce. This randomized control trial aims at determination of effect of Cox- inhibitors (Celecoxib in BBD in comparison to Evening Primrose Oil (EPO . Celecoxib showed better reduction in lump size (in 80% than EPO group (in 50%. Pain reduction was excellent in COX -2 groups as compared to EPO group. Recurrence rate was also lower in Celecoxib group at 10 weeks. Side effects were almost nil in both the groups. Celecoxib is better than EPO in the management of BBD. Short course therapy with COX-2 inhibitors gives good pain relief, greater reduction in lump size, low recurrence with minimum side effects.

  15. Endoscopic incisional therapy for benign esophageal strictures: Technique and results.

    Science.gov (United States)

    Samanta, Jayanta; Dhaka, Narendra; Sinha, Saroj Kant; Kochhar, Rakesh

    2015-12-25

    Benign esophageal strictures refractory to the conventional balloon or bougie dilatation may be subjected to various adjunctive modes of therapy, one of them being endoscopic incisional therapy (EIT). A proper delineation of the stricture anatomy is a prerequisite. A host of electrocautery and mechanical devices may be used, the most common being the use of needle knife, either standard or insulated tip. The technique entails radial incision and cutting off of the stenotic rim. Adjunctive therapies, to prevent re-stenosis, such as balloon dilatation, oral or intralesional steroids or argon plasma coagulation can be used. The common strictures where EIT has been successfully used are Schatzki's rings (SR) and anastomotic strictures (AS). Short segment strictures (safety profile and acceptable long term patency. PMID:26722613

  16. Current clinical management strategies for benign prostatic hyperplasia

    Institute of Scientific and Technical Information of China (English)

    ZHANG Xiang-hua

    2008-01-01

    @@ This article summarizes the major new findings on clinical management for benign prostatic hyperplasia (BPH) that were presented at the annual meeting of the American Urological Association (AUA) in May 2008.The management of symptomatic BPH has been changed significantly over the last decade in response to the availability of new treatment options.Prior to the 1980s,open prostatectomy was the only widely accepted intervention for BPH.Since then,the advent of new medical therapies for BPH and the introduction of a range of minimally invasive therapies have provided for men with lower urinary tract symptoms (LUTS) secondary to BPH.1 In this year's AUA meeting,several new findings were reported in the filed of BPH which involved epidemiology,clinical progression,drug therapy and new technologies in surgical therapy of BPH.

  17. Ambulatory major surgery of benign tumors of the thyroid gland

    International Nuclear Information System (INIS)

    A descriptive and prospective study on the practice of ambulatory major surgery to eliminate benign tumours of the thyroid gland, was carried out in the General Surgery Service of 'Dr. Joaquin Castillo Duany' Teaching Clinical Surgical Hospital in Santiago de Cuba during the years 1996-2008, both included, through a previous clinical evaluation of 74 patients in the Endocrinology Outpatient Department, where it was decided that they could definitely have a surgical treatment. The female sex, the age groups from 31 to 45 years, the hemithyroidectomy as surgical technique, acupuncture as analgesic procedure and the follicular adenoma as cytohistological result prevailed in the case material. Mild complications occurred in 5 members of the sample, but recovery was absolute in all, so that even 72 of them were discharged before the 24 hours. Due to its good acceptance, this surgical method is beneficial for patient and hospital institutions.(author)

  18. The link between benign prostatic hyperplasia and prostate cancer

    DEFF Research Database (Denmark)

    Ørsted, David Dynnes; Bojesen, Stig E

    2013-01-01

    therapy. Furthermore, risk factors such as prostate inflammation and metabolic disruption have key roles in the development of both diseases. Despite these commonalities, BPH and prostate cancer exhibit important differences in terms of histology and localization. Although large-scale epidemiological......Benign prostatic hyperplasia (BPH) and prostate cancer are among the most common diseases of the prostate gland and represent significant burdens for patients and health-care systems in many countries. The two diseases share traits such as hormone-dependent growth and response to antiandrogen...... studies have shown that men with BPH have an increased risk of prostate cancer and prostate-cancer-related mortality, it remains unclear whether this association reflects a causal link, shared risk factors or pathophysiological mechanisms, or detection bias upon statistical analysis. Establishing BPH...

  19. Coastal and Offshore Wind Energy Generation: Is It Environmentally Benign?

    Directory of Open Access Journals (Sweden)

    Rafael Perez-Dominguez

    2010-07-01

    Full Text Available Offshore and coastal wind power is one of the fastest growing industries in many areas, especially those with shallow coastal regions due to the preferable generation conditions available in the regions. As with any expanding industry, there are concerns regarding the potential environmental effects which may be caused by the installation of the offshore wind turbines and their associated infrastructure, including substations and subsea cables. These include the potential impacts on the biological, physical and human environments. This review discusses in detail the potential impacts arising from offshore wind farm construction, and how these may be quantified and addressed through the use of conceptual models. It concludes that while not environmentally benign, the environmental impacts are minor and can be mitigated through good siting practices. In addition, it suggests that there are opportunities for environmental benefits through habitat creation and conservation protection areas.

  20. Treatment of malignant and benign biliary obstructions with metal stents

    International Nuclear Information System (INIS)

    The palliative treatment of malignant bilary tract obstructions using a metal stent is now an established procedure in clinical practice. An endoscopic, transpapillary approach is the first choice for implantation of the stent. If it is not possible to insert the stent in this way, which is often the case with high obstructions, a percutaneous approach is chosen. It appears to be beneficial to use a metal stent with a finemeshed net such as, for example, the Wall stent. Metal stents have a higher patency rate than plastic stents so that the primary choice of a metal stent is justified. Coated stents have not yet shown any major advantages. In cases of stent occlusion the coaxial implantation of a plastic stent seems to be the most efficient. In cases of benign biliary tract stenoses, a metal stent should only be implanted after a careful evaluation of all possible surgical modalities and exploitation of balloon dilatation and long-term splinting methods. (orig.)

  1. Synthesis of a Potent Vinblastine: Rationally Designed Added Benign Complexity.

    Science.gov (United States)

    Allemann, Oliver; Brutsch, Manuela; Lukesh, John C; Brody, Daniel M; Boger, Dale L

    2016-07-13

    Many natural products, including vinblastine, have not been easily subjected to simplifications in their structures by synthetic means or modifications by late-stage semisynthetic derivatization in ways that enhance their biological potency. Herein, we detail a synthetic vinblastine that incorporates added benign complexity (ABC), which improves activity 10-fold, and is now accessible as a result of advances in the total synthesis of the natural product. The compound incorporates designed added molecular complexity but no new functional groups and maintains all existing structural and conformational features of the natural product. It constitutes a member of an analogue class presently inaccessible by semisynthetic derivatization of the natural product, by its late-stage functionalization, or by biosynthetic means. Rather, it was accessed by synthetic means, using an appropriately modified powerful penultimate single-step vindoline-catharanthine coupling strategy that proceeds with a higher diastereoselectivity than found for the natural product itself. PMID:27356080

  2. Economic issues and the management of benign prostatic hyperplasia.

    Science.gov (United States)

    Holtgrewe, H L

    1995-09-01

    Enormous financial resources are expended worldwide on the treatment of the urologic complications and symptoms induced by benign prostatic hyperplasia (BPH). Even for its surgical management, where the best data exist, current international accounting of these expenditures remains very poorly documented. On February 8, 1994, the Department of Health and Human Services of the US government released clinical guidelines for the diagnosis and management of BPH. Imaging of the upper urinary tract as a routine diagnostic procedure is not recommended in these guidelines unless a comorbidity indicating its need exists. Diagnostic cystoscopy to assist in the decision of the need to treat is not recommended. Adherence to these two principles along with adherence to the strategies of management presented in the guidelines and discussed herein has the potential of achieving profound financial savings without impairing quality of care worldwide.

  3. Benign mesothelioma of peritoneum presenting as a pelvic mass

    International Nuclear Information System (INIS)

    A large solitary multiloculated pelvic cyst in a 40-year-old woman with chronic pelvic pain was diagnosed to be a Multicystic Benign Mesothelioma (MBM) of peritoneum at laparotomy. Operative findings showed dense adhesions between uterus and bladder anteriorly, small intestines and pouch of Douglas posteriorly, a right ovarian cyst cm containing clear serous fluid and two nodular deposits were seen in the pouch of Douglas, small multiple deposits was found over the mesentery of small intestine and parietal peritoneum. Total abdominal hysterectomy with bilateral oophorectomy and infracolic omentectomy was done. During surgery, there was injury to the small intestine hence, resection of 10 inches of small intestine with re-anastomosis was carried out. Postoperative recovery was satisfactory. At 3 years follow-up, patient is symptom-free. (author)

  4. Pediatricians diagnosis in oral benign pathology of the newborn

    Directory of Open Access Journals (Sweden)

    Durán Gutiérrez Américo

    2014-07-01

    Full Text Available Knowledge of oral pathology of the newborn is important for the pediatric odontologist and also for pediatricians in order to diagnose and adequately approach it. The newborn oral cavity has specific anatomical features which health care team must know how to identify benign oral conditions. The more common are: Bohn nod- ules, Epstein pearls, Fordyce granules, Riga Fede ulcer, eruption hematoma, candidiasis, herpes simplex, difficult dental eruption, lymphangioma, natal and neonatal teeth. For those teeth whether or no they have carried or worn edges should be pulled out if they affect oral function or if they are the cause of Riga Fede ulceration. Surgical treatment is also indicated for congenital epulis, mucocele, ranula and hemangioma. A successful treatment, is based on a good diagnosis and interdisciplinary treatment. This article briefly describes the most common oral conditions of newborns in order to orient the specialist (not the dentist with practical recommendations for early and timely treatment.

  5. Cerebral metabolism of glucose in benign hereditary chorea

    International Nuclear Information System (INIS)

    Benign hereditary chorea (BHC) is an autosomal dominant disorder characterized by chorea of early onset with little or no progression. There is marked clinical variability in this disease with some subjects having onset in infancy and others with onset in early adulthood. In contrast to Huntington's disease (HD), there is no dementia. Computed tomography is normal in all subjects with no evidence of caudate nucleus atrophy. We present the results of positron emission tomography using 18F-2-fluorodeoxyglucose on three patients with this disorder from two families. Cerebral glucose metabolism in one patient was decreased in the caudate nucleus, as previously reported in HD. The other two persons from a second family showed a relative decrease in metabolic rates of glucose in the caudate when compared with the thalamus. It appears that caudate hypometabolism is not specific for HD. These findings suggest that the caudate nucleus may play a significant role in the pathophysiology of some persons with BHC

  6. Hepatic steatosis: A benign disease or a silent killer

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Steatosis is a common feature of many liver diseases, namely non-alcoholic steatohepatitis (NASH) and hepatitis C virus (HCV) infection, but the pathogenic mechanisms differ. Insulin resistance (IR), a key feature of metabolic syndrome, is crucial for NASH development, associated with many underlying genetically determined or acquired mitochondrial and metabolic defects and culminates to inflammation and progression to fibrosis. This may have potential implications for new drug therapy. In HCV-related disease, steatosis impacts both fibrosis progression and response to treatment. Steatosis in HCV-related disease relates to both viral factors (HCV genotype 3), and host factors (alcohol consumption, overweight, hyperlipidemia, diabetes). Among others, IR is a recognized factor. Hepatic steatosis is reported to be associated with disturbance in the signaling cascade of interferon and downregulation of its receptors. Thus, hepatic steatosis should not be considered a benign feature, but rather a silent killer.

  7. MICRO LARYNGEAL SURGERY: 25 CASES OF BENIGN LESIONS OF LARYNX

    Directory of Open Access Journals (Sweden)

    Shanta Nibedita

    2014-10-01

    Full Text Available : Micro Laryngeal Surgery (MLS is a procedure where the larynx is seen with the help of endoscope and the view is magnified by use of an operating microscope. This has numerous advantages in regard to delineating the extent of lesion and performing a satisfactory excision or biopsy. This is the procedure of choice in assessment as well as treatment of benign lesions of larynx. Patients who are voice users were benefited by the procedure by getting back their normal voice. Study group comprise of 25 patients with age group varying from 12-48 years. Various abnormalities were detected among these patients, vocal nodule being the commonest. Other pathologies were vocal cord polyp, Reinke’s Oedema, ventricular cyst, chronic laryngitis, tuberculosis and papilomatosis of larynx. MLS is safe, effective and smoothly performed procedure giving a person back his normal voice

  8. Benign anlage tumour: a very unusual neck mass.

    Science.gov (United States)

    Parihar, Shivani; Gohil, Rohit; Oparka, Richie; Kennedy, Ceilidh

    2016-05-18

    A 44-year-old woman presented with a slow-growing asymptomatic neck swelling at the left medial clavicle. Haematological and biochemical work up was normal and an ultrasound confirmed the swelling, but needle aspiration was non-diagnostic. As lymphoma was the main differential diagnosis, the swelling was completely excised. Immunohistochemistry yielded a rare lesion, suspected to represent a myoepithelial/mixed cellularity tumour of soft tissue. The extreme rarity of these tumours required a confirmatory secondary opinion, which ultimately led to it being identified as a benign anlage tumour (previously known as an ectopic hamartomatous thymoma) This case highlights the fact that thorough assessment of patients with neck swellings should be undertaken to rule out sinister causes-keeping in mind more rare differentials-helping to guide final management.

  9. Benign chronic orofacial pain. Clinical criteria and therapeutic approaches.

    Science.gov (United States)

    Dworkin, S F

    1983-09-01

    Trigeminal neuralgia and temporomandibular joint (TMJ) pain-dysfunction syndrome are the most common benign orofacial pain disorders. Because orofacial pain can arise from many sources and can be exacerbated by emotional stress, diagnosis is complex. Primary trigeminal neuralgia (tic douloureux) is characterized by severe paroxysms of pain often initiated by stimuli applied to trigger zones. Atypical facial neuralgia is a more loosely defined collection of orofacial neuralgias with variable distribution of pain and age of onset. Treatment (ie, pharmacologic and surgical procedures, nerve blocks, alcohol injection) is often based on the theoretical biases of clinicians. The most common clinical findings in TMJ pain-dysfunction syndrome are localized facial pain, mandibular dysfunction, and joint sounds. Therapy includes use of drugs to relieve pain and relax muscles, elimination of occlusal discrepancies, and surgical procedures. Psychologic referral is usually considered a last resort. PMID:6889199

  10. Complications of stent placement for benign stricture of gastrointestinal tract

    Institute of Scientific and Technical Information of China (English)

    Ying-Sheng Cheng; Ming-Hua Li; Wei-Xiong Chen; Ni-Wei Chen; Qi-Xin Zhuang; Ke-Zhong Shang

    2004-01-01

    AIM: To observe the frequent complications of stent placement for stricture of the gastrointestinal tract and to find proper treatment.METHODS: A total number of 140 stents were inserted in 138 patients with benign stricture of the gastrointestinal tract. The procedure was completed under fluoroscopy in all of the patients.RESULTS: Stents were successfully placed in all the 138 patients. Pains occurred in 23 patients (16.7%), slight or dull pains were found in 21 patients and severe chest pain in 2 respectively.For the former type of pain, the patients received only analgesia or even no treatment, while peridural anesthesics was conducted for the latter condition. Reflux occurred in 16 of these patients (11.6%) after stent placement. It was managed by common antireflux procedures. Gastrointestinal bleeding occurred in 13 patients (9.4%), and was treated by hemostat. Restenosis of the gastrointestinal tract occurred in 8 patients (5.8%), and was apparently associated with hyperplasia of granulation tissue. In 2 patients, the second stent was placed under X-ray guidance. The granulation tissue was removed by cauterization through hot-node therapy under gastroscope guidance in 3 patients, and surgical reconstruction was performed in another 3 patients. Stent migration occurredin 5 patients (3.6%), and were extracted with the aid of a gastroscope. Food-bolus obstruction was encountered in 2 patients (1.4%) and was treated by endoscope removal. No perforation occurred in all patients.CONCLUSION: Frequent complications after stent placement for benign stricture of the gastrointestinal tract include pain,reflux, bleeding, restenosis, stent migration and food-bolus obstruction. They can be treated by drugs, the second stent placement or gastroscopic procedures according to the specific conditions.

  11. ENDOSCOPIC STENT FOR PALLIATING MALIGNANT AND BENIGN BILIARY OBSTRUCTION

    Institute of Scientific and Technical Information of China (English)

    缪林; 范志宁; 季国忠; 文卫; 蒋国斌; 吴萍; 刘政; 黄光明

    2004-01-01

    Objective: To study the techniques of placement of memory alloy plating gold biliary stent and plastic stent for palliation of malignant and benign biliary obstruction, and to assess its clinical effectiveness. Methods: The patients in plastic stent group included paplilla of duodenum inflamational strictures (n=24), common bile duct inflammational inferior segment strictures (n=4), choledocholithiasis (n=5), bile leak (n=11), bile duct surgery injurey (n=7) and pancreatic carcinoma (n=1). The patients in plating gold stent group included common bile duct carcinoma (n=5) and pancreatic carcinoma (n=6). Under fluoroscopic guidance the stent was inserted into biliary obstruction sites from oral cavity in all cases. Complications, liver function and blood serum amylase were investigated during the study period. Results: Successful stent placement was achieved in all cases. After operation of 7 days, in gold biliary stent groups, the rates of decrease of blood serum total bilirubin, glutamic-pyruvic transaminase, r-glutamyl transpeptidase and alkaline phosphatase were 67.16%, 58.37%, 40.63% and 41.54% respectively. In plastic stent group, the rates of decrease of STB, ALT, r-GT and AKP were 53.24%, 55.03%, 37.15%, 34.12% respectively. Early complication included post-ERCP pancreatitis and cholangititis. Occlusion of stent was the major late complication. Conclusion: Memory alloy plating gold biliary stent and plastic stent were safe and efficacious methods for malignant and benign biliary obstruction, and could improve patient's living quality. Plastic stent was an efficient complement for therapy of bile leak and bile duct injury.

  12. Robotic Trachelectomy After Supracervical Hysterectomy for Benign Gynecologic Disease

    Science.gov (United States)

    Aoun, Joelle; Hanna, Rabbie; Papalekas, Eleni; Schiff, Lauren; Theoharis, Evan; Eisenstein, David

    2016-01-01

    Background and Objectives: A renewed interest in the supra cervical approach to hysterectomy has created a cohort of patients with a retained cervix at risk of persistent symptoms requiring a subsequent trachelectomy. The objective of this study was to evaluate the efficacy of robotic trachelectomy after a previous supracervical hysterectomy. Methods: This is a retrospective chart review of women who had robotic trachelectomy after supracervical hysterectomy for benign gynecologic disease from January 2009 through October 2014. Results: Eleven patients underwent robotic trachelectomy for benign conditions during the observed period. Prior supracervical hysterectomy had been performed for pelvic pain (8/11, 73%), abnormal uterine bleeding (7/11, 64%), and dysmenorrhea (5/11, 45%). In 10 of 11 patients, the symptoms leading to robotic trachelectomy were the same as those leading to supracervical hysterectomy. The time from hysterectomy to recurrence of symptoms ranged from 0.5 to 26 months (median, 6), whereas the time interval from previous surgery to robotic trachelectomy ranged from 1 to 57 months (median, 26). Mean age and body mass index at robotic trachelectomy were 42 ± 5.4 years and 32 ± 6.1 kg/m2. Mean length of surgery was 218 ± 88 minutes (range, 100–405). There was 1 major postoperative complication involving bladder perforation and subsequent vesicovaginal fistula (VVF). Endometriosis was seen in 27% of pathologic specimens and cervicitis in another 27%; 45% showed normal tissue histology. In 6 (55%) cases, symptoms leading to trachelectomy resolved completely after surgery, and the other 5 (45%) patients reported a significant improvement. Conclusions: Although trachelectomy can be a challenging surgery, our experience suggests that the robotic approach may be a valuable means of achieving safe and reproducible outcomes. PMID:27493470

  13. Benign prostatic hyperplasia: age-related tissue-remodeling.

    Science.gov (United States)

    Untergasser, Gerold; Madersbacher, Stephan; Berger, Peter

    2005-03-01

    Aging and androgens are the two established risk factors for the development of benign prostatic hyperplasia (BPH) and benign prostatic enlargement (BPE), which can lead to lower urinary tract symptoms (LUTS) in elderly men. BPH, consisting of a nodular overgrowth of the epithelium and fibromuscular tissue within transition zone and periurethral areas, is first detectable around the fourth decade of life and affects nearly all men by the ninth decade. The pathogenesis of BPH is still largely unresolved, but multiple partially overlapping and complementary theories have been proposed, all of which seem to be operative at least to some extent. In addition to nerve-, endocrine- and immune system, local para- and luminocrine pleiotrope mechanisms/factors are implicated in the prostatic tissue-remodeling process. Prostate tissue-remodeling in the transition zone is characterized by: (i) hypertrophic basal cells, (ii) altered secretions of luminal cells leading to calcification, clogged ducts and inflammation, (iii) lymphocytic infiltration with production of proinflammatory cytokines, (iv) increased radical oxygen species (ROS) production that damages epithelial and stromal cells, (v) increased basic fibroblast (bFGF) and transforming growth factor beta (TGF-beta 1) production leading to stromal proliferation, transdifferentiation and extracellular matrix production, (vi) altered autonomous innervation that decreases relaxation and leads to a high adrenergic tonus, (vii) and altered neuroendocine cell function and release of neuroendocrine peptides (NEP). This review summarizes the multifactorial nature of prostate tissue remodeling in elderly men with symptomatic BPH with a particular focus on changes of cell-cell interactions and cell functions in the human aging prostate.

  14. ENVIRONMENTALLY BENIGN MITIGATION OF MICROBIOLOGICALLY INFLUENCED CORROSION (MIC)

    Energy Technology Data Exchange (ETDEWEB)

    J. Robert Paterek; Gemma Husmillo; Amrutha Daram; Vesna Trbovic; Teri Storino

    2003-04-01

    The overall program objective is to develop and evaluate environmentally benign agents or products that are effective in the prevention, inhibition, and mitigation of microbially influenced corrosion (MIC) in the internal surfaces of metallic natural gas pipelines. The goal is to develop one or more environmentally benign (a.k.a. ''green'') products that can be applied to maintain the structure and dependability of the natural gas infrastructure. The technical approach for this quarter includes the application of new methods of Capsicum sp. (pepper) extraction by soxhlet method and analysis of a new set of extracts by thin layer chromatography (TLC) and high performance liquid chromatography (HPLC); isolation and cultivation of MIC-causing microorganisms from corroded pipeline samples; and evaluation of antimicrobial activities of the old set of pepper extracts in comparison with major components of known biocides and corrosion inhibitors. Twelve new extracts from three varieties of Capsicum sp. (Serrano, Habanero, and Chile de Arbol) were obtained by soxhlet extraction using 4 different solvents. Results of TLC done on these extracts showed the presence of capsaicin and some phenolic compounds, while that of HPLC detected capsaicin and dihydrocapsaicin peaks. More tests will be done to determine specific components. Additional isolates from the group of heterotrophic, acid-producing, denitrifying and sulfate-reducing bacteria were obtained from the pipeline samples submitted by gas companies. Isolates of interest will be used in subsequent antimicrobial testing and test-loop simulation system experiments. Results of antimicrobial screening of Capsicum sp. extracts and components of known commercial biocides showed comparable activities when tested against two strains of sulfate-reducing bacteria.

  15. Catalytic Hydrogenation of Acetone to Isopropanol: An Environmentally Benign Approach

    Directory of Open Access Journals (Sweden)

    Ateeq Rahman

    2011-01-01

    Full Text Available The catalytic hydrogenation of acetone is an important area of catalytic process to produce fine chemicals. Hydrogenation of acetone has important applications for heat pumps, fuel cells or in fulfilling the sizeable demand for the production of 2-propanol. Catalytic vapour phase hydrogenation of acetone has gained attention over the decades with variety of homogeneous catalysts notably Iridium, Rh, Ru complexes and heterogeneous catalysts comprising of Raney Nickel, Raney Sponge, Ni/Al2O3, Ni/SiO2, or Co-Al2O3, Pd, Rh, Ru, Re, or Fe/Al2O3 supported on SiO2 or MgO and even CoMgAl, NiMg Al layered double hydroxide, Cu metal, CuO, Cu2O. Nano catalysts are developed for actone reduction Ni maleate, cobalt oxide prepared in organic solvents. Author present a review on acetone hydrogenation under different conditions with various homogeneous and heterogeneous catalysts studied so far in literature and new strategies to develop economic and environmentally benign approach. ©2010 BCREC UNDIP. All rights reserved(Received: 16th June 2010, Revised: 18th October 2010; Accepted: 25th October 2010[How to Cite:Ateeq Rahman. (2010. Catalytic Hydrogenation of Acetone to Isopropanol: An Environmentally Benign Approach. Bulletin of Chemical Reaction Engineering and Catalysis, 5(2: 113-126. doi:10.9767/bcrec.5.2.798.113-126][DOI: http://dx.doi.org/10.9767/bcrec.5.2.798.113-126 || or local:  http://ejournal.undip.ac.id/index.php/bcrec/article/view/798

  16. ENVIRONMENTALLY BENIGN MITIGATION OF MICROBIOLOGICALLY INFLUENCED CORROSION (MIC)

    Energy Technology Data Exchange (ETDEWEB)

    John J. Kilbane II; William Bogan

    2004-01-31

    The overall program objective is to develop and evaluate environmentally benign agents or products that are effective in the prevention, inhibition, and mitigation of microbially influenced corrosion (MIC) in the internal surfaces of metallic natural gas pipelines. The goal is to develop one or more environmentally benign (a.k.a. ''green'') products that can be applied to maintain the structure and dependability of the natural gas infrastructure. The technical approach for this quarter included the fractionation of extracts prepared from several varieties of pepper plants, and using several solvents, by high performance liquid chromatography (HPLC). A preliminary determination of antimicrobial activities of the new extracts and fractions using a growth inhibition assay, and evaluation of the extracts ability to inhibit biofilm formation was also performed. The analysis of multiple extracts of pepper plants and fractions of extracts of pepper plants obtained by HPLC illustrated that these extracts and fractions are extremely complex mixtures of chemicals. Gas chromatography-mass spectrometry was used to identify the chemical constituents of these extracts and fractions to the greatest degree possible. Analysis of the chemical composition of various extracts of pepper plants has illustrated the complexity of the chemical mixtures present, and while additional work will be performed to further characterize the extracts to identify bioactive compounds the focus of efforts should now shift to an evaluation of the ability of extracts to inhibit corrosion in mixed culture biofilms, and in pure cultures of bacterial types which are known or believed to be important in corrosion.

  17. A CLINICAL STUDY OF BENIGN LESIONS OF PINNA

    Directory of Open Access Journals (Sweden)

    Srirangaprasad

    2016-02-01

    Full Text Available BACKGROUND AND OBJECTIVES To study the clinical aspects of benign lesions of pinna and to evaluate aetiopathological factors, prevalence and management options. METHODS The study included 115 patients during the period from January 2013 to December 2013. The selection criteria included patients presenting with swellings of pinna which included keloids, seromas, sebaceous cyst, preauricular sinus, haemangioma, dermoid and neurofibroma. A detailed clinical history regarding onset, predisposing factors and associated conditions was documented and analysed. RESULTS Of total 115 cases in our study, 66 cases (57% presented with keloid followed by 33 cases (29% of pseudocyst of auricle, sebaceous cyst were seen in 10 cases, i.e. 9% and only 1 case of Neurofibroma, Haemangioma and Dermoid was diagnosed (<1%; 94 percent of patients presenting with Keloid were females; 88% of them had unilateral and just 12% had bilateral disease. Trauma was the factor in causation of pseudocyst of auricle in 11 cases (34%, diabetes also was seen in 3 cases (9%. Of all 33 cases of pseudocyst of auricle, 27 cases (82% were managed by window procedure and 6 cases (18% were managed with aspiration. CONCLUSION Trauma is the most important factor in causation of number of benign lesions of pinna. Other factors being high ear piercing through the cartilage. Diabetes mellitus plays a significant role and should be controlled simultaneously. Wide bore needle aspiration can be done for some of the cases of seroma patients who have recurrence and other cases can be managed by window procedure. Other lesions like keloid, sebaceous cyst, haemangioma and dermoid can be managed by complete surgical excision. A firm pressure bandage should be applied in most of the cases after surgery. Neurofibroma can be managed conservatively.

  18. Beneficial effect of combined aspiration and interstitial laser therapy in patients with benign cystic thyroid nodules

    DEFF Research Database (Denmark)

    Døssing, H; Bennedbaek, F N; Hegedüs, L

    2006-01-01

    The aim of this study was to evaluate the effect of combined cyst aspiration and ultrasound-guided interstitial laser photocoagulation (ILP) on recurrence rate and the volume of benign cystic thyroid nodules. 10 euthyroid outpatients with a solitary and cytologically benign partially cystic thyroid...

  19. Differentiation between Benign and Malignant Solid Thyroid Nodules Using an US Classification System

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Young Hun; Kim, Dong Wook; In, Hyun Sin; Park, Ji Sung; Kim, Sang Hyo; Eom, Jae Wook; Kim, Bomi [Busan Paik Hospital, Inje University College of Medicine, Busan (Korea, Republic of); Lee, Eun Joo [Dongnam Institute of Radiological and Medical Science, Busan (Korea, Republic of); Rho, Myung Ho [Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of)

    2011-10-15

    To evaluate the diagnostic accuracy of a new ultrasound (US) classification system for differentiating between benign and malignant solid thyroid nodules. In this study, we enrolled 191 consecutive patients who received real-time US and subsequent US diagnoses for solid thyroid nodules, and underwent US-guided fine-needle aspiration. Each thyroid nodule was prospectively classified into 1 of 5 diagnostic categories by real-time US: 'malignant,' 'suspicious for malignancy,' 'borderline,' 'probably benign,' and 'benign'. We evaluated the diagnostic accuracy of thyroid US and the cut-off US criteria by comparing the US diagnoses of thyroid nodules with cytopathologic results. Of the 191 solid nodules, 103 were subjected to thyroid surgery. US categories for these 191 nodules were malignant (n = 52), suspicious for malignancy (n = 16), borderline (n = 23), probably benign (n 18), and benign (n = 82). A receiver-operating characteristic curve analysis revealed that the US diagnosis for solid thyroid nodules using the 5-category US classification system was very good. The sensitivity, specificity, positive and negative predictive values, and accuracy of US diagnosis were 86%, 95%, 91%, 92%, and 92%, respectively, when benign, probably benign, and borderline categories were collectively classified as benign (negative). The diagnostic accuracy of thyroid US for solid thyroid nodules is high when the above-mentioned US classification system is applied.

  20. Spontaneous rupture of benign mediastinal teratoma : A report of two cases

    Directory of Open Access Journals (Sweden)

    K S Madhusudhan

    2012-01-01

    Full Text Available Benign mediastinal teratomas are commonly asymptomatic and seldom cause complications. Spontaneous rupture into the pleura is rare and cross-sectional imaging is crucial in its early detection and planning a proper surgical approach. We report two cases of spontaneous pulmonary and pleural rupture of benign mediastinal teratoma and discuss the imaging appearances.

  1. Social Perception in Children with Intellectual Disabilities: The Interpretation of Benign and Hostile Intentions

    Science.gov (United States)

    Leffert, J. S.; Siperstein, G. N.; Widaman, K. F.

    2010-01-01

    Background: A key aspect of social perception is the interpretation of others' intentions. Children with intellectual disabilities (IDs) have difficulty interpreting benign intentions when a negative event occurs. From a cognitive processing perspective, interpreting benign intentions can be challenging because it requires integration of…

  2. High concentrations of protein test substances may have non-toxic effects on Daphnia magna: implications for regulatory study designs and ecological risk assessments for GM crops.

    Science.gov (United States)

    Raybould, Alan; Burns, Andrea; Hamer, Mick

    2014-01-01

    Laboratory testing for possible adverse effects of insecticidal proteins on non-target organisms (NTOs) is an important part of many ecological risk assessments for regulatory decision-making about the cultivation of insect-resistant genetically modified (IRGM) crops. To increase confidence in the risk assessments, regulatory guidelines for effects testing specify that representative surrogate species for NTOs are exposed to concentrations of insecticidal proteins that are in excess of worst-case predicted exposures in the field. High concentrations in effects tests are achieved by using protein test substances produced in microbes, such as Escherichia coli. In a study that exposed Daphnia magna to a single high concentration of a microbial test substance containing Vip3Aa20, the insecticidal protein in MIR162 maize, small reductions in growth were observed. These effects were surprising as many other studies strongly suggest that the activity of Vip3Aa20 is limited to Lepidoptera. A plausible explanation for the effect on growth is that high concentrations of test substance have a non-toxic effect on Daphnia, perhaps by reducing its feeding rate. A follow-up study tested that hypothesis by exposing D. magna to several concentrations of Vip3Aa20, and a high concentration of a non-toxic protein, bovine serum albumin (BSA). Vip3Aa20 and BSA had sporadic effects on the reproduction and growth of D. magna. The pattern of the effects suggests that they result from non-toxic effects of high concentrations of protein, and not from toxicity. The implications of these results for regulatory NTO effects testing and ERA of IRGM crops are discussed.

  3. Treatment of benign ureteral stricture by double J stents using high-pressure balloon angioplasty

    Institute of Scientific and Technical Information of China (English)

    YU Hua-liang; YE Lin-yang; LIN Mao-hu; YANG Yu; MIAO Rui; HU Xiao-juan

    2011-01-01

    Background Balloon dilatation angioplasty is a minimally invasive surgery for treating benign ureteral stricture. The aim of this study was to investigate the effect of placing double J (D-J) stents using high-pressure balloon angioplasty in treating benign ureteral stricture.Methods A total of 42 patients (48 cases) with benign ureteral stricture (42 had benign ureteral stricture) were investigated by inserting dual D-J stents using high-pressure balloon angioplasty. The control group contained 50 patients (57 cases) employing the conventional balloon angioplasty with a single D-J stent inserted for comparison.Results The overall effective rate of the treated and control groups was 87.8% (36/41) and 62.7% (32/51), respectively (P <0.05).Conclusion This new approach produces a better curative effect than the conventional balloon angioplasty with a single D-J stent insertion in treating benign ureteral stricture.

  4. Surgical Excision of Benign Papillomas Diagnosed with Core Biopsy: A Community Hospital Approach

    International Nuclear Information System (INIS)

    Our goal was to assess the value of surgical excision of benign papillomas of the breast diagnosed on percutaneous core biopsy by determining the frequency of upgrade to malignancies and high risk lesions on a final surgical pathology. We reviewed 67 patients who had biopsies yielding benign papilloma and underwent subsequent surgical excision. Surgical pathology of the excised lesions was compared with initial core biopsy pathology results. 54 patients had concordant benign core and excisional pathology. Cancer (ductal carcinoma in situ and invasive ductal carcinoma) was diagnosed in five (7%) patients. Surgery revealed high-risk lesions in 8 (12%) patients, including atypical ductal hyperplasia, atypical lobular hyperplasia, and lobular carcinoma in situ. Cancer and high risk lesions accounted for 13 (19%) upstaging events from benign papilloma diagnosis. Our data suggests that surgical excision is warranted with core pathology of benign papilloma

  5. Surgical Excision of Benign Papillomas Diagnosed with Core Biopsy: A Community Hospital Approach

    Directory of Open Access Journals (Sweden)

    Eka Rozentsvayg

    2011-01-01

    Full Text Available Our goal was to assess the value of surgical excision of benign papillomas of the breast diagnosed on percutaneous core biopsy by determining the frequency of upgrade to malignancies and high risk lesions on a final surgical pathology. We reviewed 67 patients who had biopsies yielding benign papilloma and underwent subsequent surgical excision. Surgical pathology of the excised lesions was compared with initial core biopsy pathology results. 54 patients had concordant benign core and excisional pathology. Cancer (ductal carcinoma in situ and invasive ductal carcinoma was diagnosed in five (7% patients. Surgery revealed high-risk lesions in 8 (12% patients, including atypical ductal hyperplasia, atypical lobular hyperplasia, and lobular carcinoma in situ. Cancer and high risk lesions accounted for 13 (19% upstaging events from benign papilloma diagnosis. Our data suggests that surgical excision is warranted with core pathology of benign papilloma.

  6. Treatment of benign intracranial meningioma: the role of radiotherapy

    International Nuclear Information System (INIS)

    Purpose/Objective: To determine the role of radiotherapy (RT) in primary treatment of benign intracranial meningiomas and to assess patient and treatment characteristics predictive of outcome. Materials and Methods: 262 patients with benign intracranial meningiomas eligible for 2-year minimum follow-up (median, 8.2 years) were analyzed for the impact of age, Karnofsky performance status, histology and behavior, location, and type of treatment on local control and cause-specific survival. Treatment groups include surgery alone (n=229), surgery plus postoperative RT (n=21), and RT alone (n=12). Extent of surgical excision was graded by Simpson's classification (Grade 1-3 = total excision [TE], Grade 4 = subtotal excision [SE]). Median dose delivered with RT alone was 50.4 Gy in 28 fractions, and postoperatively it was 52.5 Gy in 30 fractions. Survival was determined by the Kaplan-Meier method, and univariate and multivariate analyses used the forward stepwise progression of the chi squares with the log rank test. Results: Overall 15-year local control and cause-specific survival was 68% and 78%, respectively. Fifteen-year local control rates for patients treated with TE, SE, and SE + RT were 76%, 30%, and 87%, respectively (p-bar = .0001). Fifteen-year cause-specific survival rates for patients treated with TE, SE, and SE + RT were 88%, 51%, and 86%, respectively (p-bar = .0003). The degree of excision (Simpson's classification 1 vs 2 vs 3) within totally excised lesions was not predictive of local control or cause-specific survival. Five-year local control and cause-specific survival for patients treated with RT alone were 92% and 100%, respectively. Univariate and multivariate analysis revealed that treatment group (SE alone vs others) and atypical histology or behavior were significant factors for local control. Patients treated with SE alone had significantly worse local control rates (p-bar .0001). Patients without atypical histology or behavior had a 15-year

  7. A high throughput live transparent animal bioassay to identify non-toxic small molecules or genes that regulate vertebrate fat metabolism for obesity drug development

    Directory of Open Access Journals (Sweden)

    Woollett Laura A

    2008-08-01

    Full Text Available Abstract Background The alarming rise in the obesity epidemic and growing concern for the pathologic consequences of the metabolic syndrome warrant great need for development of obesity-related pharmacotherapeutics. The search for such therapeutics is severely limited by the slow throughput of animal models of obesity. Amenable to placement into a 96 well plate, zebrafish larvae have emerged as one of the highest throughput vertebrate model organisms for performing small molecule screens. A method for visually identifying non-toxic molecular effectors of fat metabolism using a live transparent vertebrate was developed. Given that increased levels of nicotinamide adenine dinucleotide (NAD via deletion of CD38 have been shown to prevent high fat diet induced obesity in mice in a SIRT-1 dependent fashion we explored the possibility of directly applying NAD to zebrafish. Methods Zebrafish larvae were incubated with daily refreshing of nile red containing media starting from a developmental stage of equivalent fat content among siblings (3 days post-fertilization, dpf and continuing with daily refreshing until 7 dpf. Results PPAR activators, beta-adrenergic agonists, SIRT-1 activators, and nicotinic acid treatment all caused predicted changes in fat, cholesterol, and gene expression consistent with a high degree of evolutionary conservation of fat metabolism signal transduction extending from man to zebrafish larvae. All changes in fat content were visually quantifiable in a relative fashion using live zebrafish larvae nile red fluorescence microscopy. Resveratrol treatment caused the greatest and most consistent loss of fat content. The resveratrol tetramer Vaticanol B caused loss of fat equivalent in potency to resveratrol alone. Significantly, the direct administration of NAD decreased fat content in zebrafish. Results from knockdown of a zebrafish G-PCR ortholog previously determined to decrease fat content in C. elegans support that future GPR

  8. Familial benign hypercalcaemia. Study of a large family.

    Science.gov (United States)

    Menko, F H; Bijvoet, O L; Fronen, J L; Sandler, L M; Adami, S; O'Riordan, J L; Schopman, W; Heynen, G

    1983-01-01

    Twenty-seven hypercalcaemic subjects were identified in three generations of a family. There were no clinical complications of chronic hypercalcaemia, but five had had parathyroid surgery which was unsuccessful in four. Twenty of the twenty-seven subjects were compared with twenty-four normocalcaemic controls from the same family and the findings were also compared with those from forty patients with surgically proven primary hyperparathyroidism. The relation between the serum and urinary calcium levels was studied by means of an oral calcium loading test. The ratio of calcium clearance to creatinine clearance was normal in this family (but elevated in the patients with primary hyperparathyroidism) and the concentration of parathyroid hormone was normal, as was the total urinary excretion of cyclic AMP. Thus, there was no evidence of either suppressed or increased parathyroid activity in this familial condition. Basal urinary calcium excretion was normal under steady-state conditions indicating that the hypercalcaemia could not be attributed to either increased bone resorption or increased calcium absorption from the gut. In accordance with this, the serum levels of 1,25-dihydroxycholecalciferol were normal. The hypercalcaemia in this condition can be accounted for in full by an increase in renal tubular reabsorption of calcium, and thus differs from that of primary hyperparathyroidism in which there is increased production of calcium from gut and/or bone as well as an increase in renal tubular reabsorption of calcium. Although the serum phosphate and renal tubular reabsorption of phosphate were both low in patients with familial benign hypercalcaemia, they were not as low as in patients with the same degree of hypercalcaemia due to primary hyperparathyroidism. The changes in phosphate transport in familial benign hypercalcaemia could be explained as a secondary effect of the increased filtered load of calcium in the kidney. The tendency towards hypermagnesaemia in

  9. Genetic alterations in benign, preneoplastic and malignant breast lesions

    Directory of Open Access Journals (Sweden)

    Mehmet Esref Kabalar

    2012-01-01

    Full Text Available Context: The c-erbB-2 proto-oncogene is a member of the epidermal growth factor receptor family and has been associated with a more aggressive breast tumor biology and resistance to some types of treatments. Aims: The aim is to investigate the correlation among bcl-2 and c-erbB-2 and the micronucleus (MN formation in patients with early breast cancer (BC. Materials and Methods: This study was conducted between May 2010 and December 2011. We analyzed the MN frequencies in 15 patients with invasive breast carcinoma (IBC, 13 patients with intraductal proliferative lesion (IDPL and 12 benign breast lesion (BBL. The sample consisted of 40 formalin-fixed, paraffin-embedded blocks of benign and malignant breast tissue. The specimens were evaluated for bcl-2 or c-erbB-2 immunoreactivity was semi-quantitatively evaluated in at least 1000 cells examined under the microscope at 40Χ magnification and recorded as the percentage of c-erbB-2 and bcl-2 positive tumor cells over the total number of cells examined in the same area. The percentage scores were subsequently categorized using the 5% cut-off point for positive staining. Results: The MN was significantly increased in IBC and in IDPL patients compared to BBL patients (3.82 ± 0.17 and 2.37 ± 0.52, respectively, vs. 1.61 ± 0.40, P < 0.001. On other hand, the MN frequencies in IBC patients were higher than those in IDPL patients (3.82 ± 0.17 vs. 2.37 ± 0.52, P < 0.01. c-erbB-2, had the highest record in IBC (60%, and the score was not observed in both IDPL and BBL: bcl-2 immunostaining was also assessed, the lowest recorded score was in IBC (46.66% and the highest in both BBL and IDPL (100%. Furthermore, there was a significantly difference in the mean MN frequency between c-erbB-2 positive IBC patients (4.06 ± 0.48 and c-erbB-2 negative IBC patients (3.44 ± 0.39 (P < 0.05. Conclusions: Our results suggest that increased chromosome / DNA instabilities may be associated with the pathogenesis of

  10. The role of combination medical therapy in benign prostatic hyperplasia.

    Science.gov (United States)

    Greco, K A; McVary, K T

    2008-12-01

    To review key trials of monotherapy and combination therapy of alpha(1)-adrenergic receptor antagonists (alpha(1)-ARAs), 5alpha-reductase inhibitors (5alphaRIs) and anti-muscarinic agents in the treatment of lower urinary tract symptoms (LUTS) associated with benign prostatic hyperplasia (BPH). To assess the safety and efficacy of combination therapies for LUTS associated with BPH, a search of the MEDLINE and Cochrane databases (1976-2008) was conducted for relevant trials and reviews using the terms benign prostatic hyperplasia, lower urinary tract symptoms, alpha(1)-adrenergic receptor antagonists, 5alpha-reductase inhibitors, anti-muscarinics, anticholinergics, combination therapy, alfuzosin, doxazosin, tamsulosin, terazosin, dutasteride, finasteride, tolterodine, flavoxate, propiverine, oxybutynin, erectile dysfunction, sildenafil, vardenafil and tadalafil. Data from the Medical Therapy of Prostatic Symptoms (MTOPS) study indicated a role for long-term use of alpha(1)-ARAs and 5alphaRIs in combination. In the MTOPS study, combination therapy with the alpha(1)-ARA doxazosin and the 5alphaRI finasteride was significantly more effective than either component alone in reducing symptoms (P=0.006 vs doxazosin monotherapy; Pfinasteride monotherapy) and in lowering the rate of clinical progression (Pdutasteride resulted in a significantly greater decrease in International Prostate Symptom Score (IPSS) when compared with either monotherapy. Several recent trials have studied the efficacy of combining alpha(1)-ARAs and anti-muscarinic agents in the treatment of BPH. These studies have found this combination to result in statistically significant benefits in quality of life scores, patient satisfaction, urinary frequency, storage symptoms and IPSS scores. Studies have not shown an increased risk of urinary retention associated with the use of anti-muscarinics in a highly select cohort of men with BPH. The available data suggest that combination therapy can be beneficial

  11. ENVIROMENTALLY BENIGN MITIGATION OF MICROBIOLOGICALLY INFLUENCED CORROSION (MIC)

    Energy Technology Data Exchange (ETDEWEB)

    J. Robert Paterek; Gemma Husmillo; Amrutha Daram; Vesna Trbovic

    2003-10-31

    The overall program objective is to develop and evaluate environmentally benign agents or products that are effective in the prevention, inhibition, and mitigation of microbially influenced corrosion (MIC) in the internal surfaces of metallic natural gas pipelines. The goal is to develop one or more environmentally benign (a.k.a. ''green'') products that can be applied to maintain the structure and dependability of the natural gas infrastructure. The technical approach for this quarter includes the application of the method of fractionation of the extracts by high performance liquid chromatography (HPLC); determination of antimicrobial activities of the new extracts and fractions using a growth inhibition assay, and evaluation of the extracts' ability to inhibit biofilm formation. We initiated the delivery system for these new biocides in the test cell and in mixtures of foam components and biocides/anti-biofilms. A total of 51 fractions collected by HPLC from crude extracts that were obtained from three varieties of Capsicum sp. (Serrano, Habanero, Chile de Arbol) were subjected to growth inhibition tests against two SRB strains, D. vulgaris and D. desulfuricans. Five fractions showed growth inhibition against both strains while seven inhibited D. desulfuricans only. The crude extracts did not show growth inhibition on both strains but were proven to be potent in preventing the formation of biofilm. Growth inhibition tests of the same set of crude extracts against Comamonas denitrificans did not show positive results. The fractions will be subjected to biofilm inhibition and dissociation assay as well. The delivery system to be evaluated first was foam. The ''foam pig'' components of surfactants and water were tested with the biocide addition. The first chemical and physical parameters to be tested were pH and surfactants. Tests using the fractionated pepper extracts are progressing rapidly. Gas chromatographic analysis

  12. Benign thyroid disorders, radioiodine therapy and diagnosis related groups (DRGs): aspects of cost/benefit

    International Nuclear Information System (INIS)

    The increasing prevalence of goiter and thyroid nodules in older patients is accompanied by an increasing frequency of treatment and cost. Cost-effectiveness is given for programs of prophylaxis (primary prevention, e.g. alimentary iodine supplementation), for programs of screening (secondary prevention. e.g. TSH-screening), and for therapeutic strategies to avoid complications of thyroid dysfunction (atrial fibrillation, myocardial infarction, death for cardiac reasons) and to minimize iatrogenic complications (tertiary prevention). Examples of tertiary prevention are radioiodine-therapy of Graves' disease in patients who have an increased risk of relapse after antithyroid drugs (ATD), radioiodine therapy of ouvert or subclinical hyperthyroidism, and radioiodine therapy of large goiters in older patients or in patients suffering from a relevant co-morbidity. A cost-effectiveness-analysis for different therapeutic strategies of Graves' disease has been published using a lifelong time-horizon. The ablative radioiodine dose-regime is cost-effective as a first line therapy if the risk of relapse after ATD exceeds 60%. Cost-minimization-analysis, comparing resection of goiter and radioiodine, has shown lower cost of radioiodine therapy for toxic multinodular goiter up to 100 ml and for Graves' disease up to 60 ml goiter volume. Medical aspects (volume of goiter, uptake of nodules, regressive goiter, suspicion on malignancy, patients' age, co-morbidity, patients' decision) remain decisive for the choice of treatment. (orig.)

  13. Evaluation for Madigan's prostatectomy in patients with benign prostatic hyperplasia

    Institute of Scientific and Technical Information of China (English)

    Li-Min LIAO; Bing-Yi SHI; Chun-Quan LIANG; Werner SCH(..)AFER

    2001-01-01

    To comparatively evaluate the efficacy and post-operative complications of the Madigan's prostatectomy (MPC) and suprapubic prostatectomy (SPPC). Methods: A total of 43 patients with benign prostatic hyperplasia were divided into two groups: 21 underwent MPC and 22, SPPC. In all the patients, the international prostate symptom score (IPSS) and urinary pressure-flow studies were assessed before and 6 months after operation. The International Continence Society (ICS) nomogram, Abrams-Griffiths (AG) number and linear passive urethral resistance relation analysis (L-PURR) were used to diagnose and grade bladder outlet obstruction (BOO). The IPSS and the urodynamic parameters before and after operation, as well as the advantages and post-operative complications were recorded and compared. Results: Patients of both the MPC and SPPC groups had a significant improvement in IPSS and urodynamic parameters. Obstruction was relieved in 81.0% of MPC and 86.4 % of SPPC patients. MPC has the advantages of the absence of postoperative hematuria and post-catheter stricture, a shorter period of hospitalization, and lower incidence of retrograde ejaculation and erectile dysfunction. Conclusion: Both MPC and SPPC can effectively relieve BOO. MPC has certain advantages and a lower incidence of complications as compared with SPPC.

  14. Cognitive Findings in Benign Childhood Epilepsy with Occipital Paroxysms

    Directory of Open Access Journals (Sweden)

    Ebru Kolsal

    2014-12-01

    Full Text Available Aim: The aim of this study was to evaluate the cognitive and visual perceptive functions in children with childhood epilepsy with occipital paroxysms (CEOP. Material and Method: Hospital charts of children ages 1 to 18 years who admitted to pediatric neurology out-patient clinic between 2009 and 2010 were reviewed. Twenty one children with a diagnosis of CEOP were identified. Sixteen of these children who accepted to include the study were evaluated with neuropsychological tests. Results: Two of five patients who were evaluated with Denver developmental screening test were found to have lower scores than their reference standards. Remaining 11 patients were evaluated with Wechsler Scales of Intelligence tests, 4 were mildly mental retarded and 1 had null intelligence. Eleven patients were also evaluated with Bender Gestalt Visual Motor Test and 7of them had disturbances in visual perception. Reading speed and writing norm tests were applied to 9 literate patients and 7 of them showed slower reading ability and writing ability was found worse in 6 patients. Discussion: The absence of neurological and neuropsylogical deficits has long been considered as a prerequisite for diagnosis of benign childhood partial epilepsies. However, only a few studies describing the cognitive profile of patients with CEOP have been published. The present study has demonstrated that the patients with CEOP had varying degree of cognitive dysfunction and disturbance in visual perception. In order to provide appropriate intervention, cognitive functions should be assessed in children with CEOP.

  15. Benign retroperitoneal schwannoma presenting as colitis: A case report

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    We report a case of a patient presenting with clinical, radiological and endoscopic features of colitis due to a compressive left para-aortic mass. Total open surgical excision was performed, which resulted in complete resolution of colitis. Histopathology and immunohistochemistry revealed benign retroperitoneal schwannoma. These neural sheath tumors rarely occur in the retroperitoneum. They are usually asymptomatic but as they enlarge they may compress adjacent structures, which leads to a wide spectrum of nonspecific symptoms, including lumbar pain, headache, secondary hypertension, abdominal pain and renal colicky pain. CT and MR findings show characteristic features, but none are specific. Schwannoma can be isolated sporadic lesions, or associated with schwannomatosis or neurofibromatosis type Ⅱ (NF2). Although they vary in biological and clinical behavior, their presence is, in nearly every case, due to alterations or absence of the NF2 gene, which is involved in the growth regulation of Schwann cells. Both conditions were excluded by thorough mutation analysis. Diagnosis is based on histopathological examination and immunohistochemistry. Total excision is therapeutic and has a good prognosis. Schwannomatosis and NF2 should be excluded through clinical diagnostic criteria. Genetic testing of NF2 is probably not justified in the presence of a solitary retroperitoneal schwannoma.

  16. Imaging features of Benign fibrous histiocytoma of bone

    International Nuclear Information System (INIS)

    Objective: To evaluate the imaging features of benign fibrous histiocytoma (BFH). Methods: Imaging data were retrospectively collected and reviewed in 11 patients with pathologically proved BFH. Of the 11 patients, X-ray was performed in all patients,MR scans in 6 patients, and CT scans in 4 patients. Results: All lesions detected were a solitary lesion.The distribution of BFH was in the tibia (n=5), femur (n=3), fibula (n=1), sacrum (n=1), and thoracic vertebrae (n=1). X-ray features included eccentric osteolytic lesions in 7 patients and centric in 2 patients, with clear boundary and thinning of the cortex, and 7 patients with varying degrees of ossified border were found. CT scan shows bone destruction with density similar to soft tissue. The majority of lesions (n=3) were observed in the expanding shell of bone, 2 patients in the tibia and 1 patient in the thoracic lesions with cortical bone perforation. The thoracic lesion as soft tissue mass was detected. All of the lesions detected in CT showed no periosteal reaction. In patients with MR images, hypo to isointense signal intensity on T1WI and hyperintense signal intensity on T2WI was found. All lesions on post-contrast T1WI were detected with homogeneous or heterogeneous lesion with moderate or significant enhancement. Conclusion: Imaging features were typical for MFH which is useful tool helping correct diagnosis of MFH. (authors)

  17. Recent advancement of therapeutic endoscopy in theesophageal benign diseases

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    Over the past 30 years, the field of endoscopy haswitnessed several advances. With the advent ofendoscopic mucosal resection, removal of large mucosallesions have become possible. Thereafter, endoscopicsubmucosal resection was refined, permitting en blocremoval of large superficial neoplasms. Such techniqueshave facilitated the development of antirefluxmucosectomy, a promising novel treatment for gastroesophagealreflux. The introduction and use of overthe scope clips has allowed for endoscopic closureof defects in the gastrointestinal tract, which weretraditionally treated with surgical intervention. With thedevelopment of per-oral endoscopic myotomy (POEM),the treatment of achalasia and spastic disorders ofthe esophagus have been revolutionized. From thesubmucosal tunnelling technique developed for POEM,Per oral endoscopic tumor resection of subepithelialtumors was made possible. Simultaneously, advancesin biotechnology have expanded esophageal stentingcapabilities with the introduction of fully covered metaland plastic stents, as well as biodegradable stents.Once deemed a primarily diagnostic tool, endoscopy hasquickly transcended to a minimally invasive interventionand therapeutic tool. These techniques are reviewedwith regards to their application to benign disease ofthe esophagus.

  18. Clinical research of benign infantile convulsions with mild gastroenteritis

    Directory of Open Access Journals (Sweden)

    Wei-bing LI

    2014-03-01

    Full Text Available Cases of benign infantile convulsions with mild gastroenteritis (BICE treated in our hospital from 2008 to 2012 were analyzed retrospectively. Among the 65 cases of convulsions with acute diarrhea, there were 18 cases of BICE, 15 cases of febrile seizures, 13 cases of epilepsy, 6 cases of viral encephalitis, 6 cases of hyponatremia encephalopathy, 3 cases of hypernatremia encephalopathy, 2 cases of toxic encephalopathy, and 2 cases of hypocalcemia convulsion. The convulsion occurred mostly during the first 2 d of the illness and was in a generalized tonic or tonic-clonic form. Positive rotavirus antigens in the BICE patients were detected in 83.33% (15/18. Phenobarbital was administered after the first convulsion (5-10 mg/kg, and diazepam was given intravenously in case of recurrence (0.10-0.30 mg/kg. BICE occurs frequently in infantile and controlling relapse is the main purpose. The prognosis is good. doi: 10.3969/j.issn.1672-6731.2014.03.019

  19. Combination pharmacological therapies for the management of benign prostatic hyperplasia.

    Science.gov (United States)

    Cohen, Seth A; Parsons, J Kellogg

    2012-04-01

    Benign prostatic hyperplasia (BPH) is a highly prevalent condition of older men caused by unregulated growth of the prostate gland. Clinical trials of medical therapy for BPH have consistently demonstrated that combined therapy with an α(1)-adrenergic receptor (AR) antagonist and a 5α-reductase inhibitor is superior to either agent alone. The addition of anticholinergic therapy to a treatment regimen could effectively improve symptoms in men with persistent storage lower urinary tract symptoms (LUTS) who have not seen a benefit with an α(1)-AR antagonist or 5α-reductase inhibitor. Among α(1)-AR antagonists, doxazosin, terazosin, tamsulosin, and alfuzosin, although with slight differences in adverse event profiles, are equivalent in effectiveness and efficacy. No data in the form of direct comparator trials exist to suggest a difference in clinical efficacy of finasteride and dutasteride, the two 5α-reductase inhibitors currently available. Current American Urological Association guidelines do not recommend phytotherapy or dietary supplements in any combination for the medical management of BPH. The current literature supports the safety and efficacy of the combination of an α(1)-AR antagonist and a 5α-reductase inhibitor in the treatment of symptomatic BPH and, in select patients, the use of an α(1)-AR antagonist and anticholinergic medication in the treatment of LUTS suggestive of BPH. PMID:22428659

  20. Benign prostatic hyperplasia (BPH) management in the primary care setting.

    Science.gov (United States)

    Kapoor, Anil

    2012-10-01

    Benign prostate hyperplasia (BPH) occurs in up to 50% of men by age 50, and the incidence increases with age. This common clinical problem is diagnosed by history, including the International Prostate Symptom Score (IPSS) questionnaire, and physical examination by digital rectal examination (DRE). Initial management for BPH includes lifestyle modification, and smooth muscle relaxant alpha blocker therapy. Alpha blockers usually take effect quickly within 3-5 days, and have minimal side effects. Current commonly used alpha blockers include the selective alpha blockers tamsulosin (Flomax), alfusosin (Xatral), and silodosin (Rapaflo). For patients with larger prostates, the 5-alpha reductase inhibitor class (finasteride (Proscar) and dutasteride (Avodart)) work effectively to shrink prostate stroma resulting in improved voiding. The 5-ARI class of drugs, in addition to reducing prostate size, also reduce the need for future BPH-related surgery, and reduce the risk of future urinary retention. Drugs from the phosphodiesterase-5 (PDE-5) inhibitor class may now be considered for treating BPH. Once daily 5 mg tadalafil has been shown to improve BPH-related symptoms and is currently approved to treat patients with BPH. Referral to a urologist can be considered for patients with a rising prostate-specific antigen (PSA), especially while on 5-ARI, failure of urinary symptom control despite maximal medical therapy, suspicion of prostate cancer, hematuria, recurrent urinary infections, urinary retention, or renal failure. Currently the primary care physician is armed with multiple treatment options to effectively treat men with symptomatic BPH. PMID:23089343

  1. TRANSURETHRAL RESECTION VERSUS TRANSVESICAL APPROACH FOR BENIGN PROSTATIC HYPERPLASIA

    Directory of Open Access Journals (Sweden)

    Karbhari

    2015-01-01

    Full Text Available BACKGROUND: Benign Prostatic Hyperplasia (BPH is a common disease in elderly people. Different surgical treatment options were available in which transvesical and transurethral resection of prostate are commonly employed for BPH in our set up. AIM : To compare the immediate complications, hospital stay, days of immobilization, duration of indwelling catheter, mortality and morbidity. MATERIALS AND METHODS: A comparative study was conducted between August 2012 to August 2014, which involved patients underwent TURP and transvesical prostatectomy. Patients having associated complications and post - op morbidities were compared. RESULTS: Commonest affected age group was 50 - 90 yrs. (M ean age 69.6 yrs. . 14 patients developed immediate significant postoperative complications in both, the procedures. 11patients developed significant delayed post - operative complications in transvesical procedure. In TURP no delayed complications. In transvesical procedure average postop erative hospital stay was 16.08 days. In TURP it was 6.24 days. Compared to transvesical procedure days of immobilization (6.48 days and indwelling catheterization (6.12 days is significantly lower in TURP 3.12 days and 2.60 days respectively. Morbidities were more in transvesical prostatectomy and none in TURP. There was no mortality in this study. CONCLUSION: TURP has definite advantage over the transvesical suprapubic prostectomy, because of shorter period of hospitalization, postoperative complications are less frequent, shorter duration and less severe. It has got lowest mortality and morbidity rates.

  2. Results of radioiodine therapy of benign thyroid disease

    International Nuclear Information System (INIS)

    The goal of this work is the quantification of therapy results of a radioiodine therapy with Iodine 131 on 367 patients with the following benign thyroid diseases: euthyroidal struma, hyperthyroidism, hyperthyroidal struma and autonomous adenoma. 1. Euthyroidal struma - subjective improvement and objective diminution of the struma by 63%, subjective or objective improvement by 21% of the patients. Including the probable successful therapies the success rate was all together 90.1%. 2. Hyperthyroidism - after one-time/more-time (18.6%) radioiodine therapy the success rate was 71.5/85.7% including latent (8.6/10.0%) and manifest (7.1/8.5%) hypothroidism. 3. Hyperthyroidal struma - after one-time/more-time (16.9%) radioiodine therapy the success rate was 74.7/90.1% including latent (-/5.7%) and manifest (1.4/2.8%) hypothyroidism. 4. Autonomous adenoma - after one-time/two-time (5.2%) radioiodine therapy the success rate was 80.5/84.6% including 15.5% latent hypothyroidism. The results will be discussed in comparison to published data and to operation and thyrostatic treatment. (TRV)

  3. Suppression of benign prostate hyperplasia by Kaempferia parviflora rhizome

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    Kazuya Murata

    2013-01-01

    Full Text Available Background: Kaempferia parviflora rhizome is used as a folk medicine in Thailand for the treatment of various symptoms. In the present study, the inhibitory activities of extract from K. parviflora rhizome against 5a-reductase (5aR were subjected. Furthermore, the effects of the extract from K. parviflorar hizome in benign prostate hyperplasia (BPH were studied using the model mice. Materials and Methods: Preparations of extracts from the rhizomes of K. parviflora, Curcuma zedoaria and Zingiber officinale, and methoxyflavones isolated from K. parviflora was used for 5aR inhibition assay. The effects of K. parviflora extract on growth suppression for the prostates and seminal vesicles were performed based on the Hershberger′s method. The K. parviflora extract was administered to castrated mice for 14 days. Results: K. parviflora extract showed more potent inhibitory activity on 5aR than C. zedoaria and Z. officinale extracts. The active principles were identified as 3,5,7,3′,4′-pentamethoxyflavone and 5,7,3′,4′-tetramethoxyflavone by activity guided fractionation. Furthermore, K. parviflora extract suppressed the weights of prostates and seminal vesicles in BPH model rats by daily administration for 14 days. Conclusion: These results indicate that K. parviflora extract can be a promising agent for the treatment of BPH.

  4. Contact laser vaporization of the prostate for benign prostatic hypertrophy

    Science.gov (United States)

    Gomella, Leonard G.; Lotfi, M. A.; Milam, Douglas F.; Albala, David; Reagan, Gary

    1994-05-01

    The contact laser applications for the removal of the enlarged prostate are distinctly different than the majority of non-contact Nd:YAG lasers that rely on coagulation necrosis and delayed sloughing. Contact Nd:YAG laser allows cutting, coagulation and vaporization of tissue with minimal penetration beyond the contact surface. Using the contact laser prostatectomy technique, the contact laser probe directly touches and immediately vaporizes the prostatic tissue under the probe. The net result is the immediate removal of the obstructing tissue, in a manner similar to the standard electrosurgical TURP. This immediate removal of tissue offers the patient treated with the contact laser the potential for decreased catheter time and a more rapid resolution of symptoms. Our initial experience suggests that the contact technique may be better suited for the smaller prostate gland (i.e. less than 30 gm). The contact laser may also be used for a procedure termed the `laser assisted TURP': a standard electrosurgical TURP is performed and the contact laser is used for hemostasis. Several investigators have reported non-randomized results of the contact technique with good outcomes. A prospective randomized trial of the contact laser prostatectomy vrs the electrosurgical TURP is underway. The contact laser vaporization of the prostate holds great promise for the treatment of symptomatic benign prostatic hypertrophy: it is virtually bloodless and allows immediate visualization of the TUR defect.

  5. Evaluation of Amelotin Expression in Benign Odontogenic Tumors

    Directory of Open Access Journals (Sweden)

    Daiana Paula Stolf

    2013-10-01

    Full Text Available Objective: Amelotin (AMTN is highly and selectively expressed by odontogenic epithelium-derived ameloblasts throughout the maturation stage of enamel formation. The protein is secreted and concentrated at the basal lamina interface between ameloblasts and the mineralized enamel matrix. Odontogenic tumors (OT are characterized by morphological resemblance to the developing tooth germ. OT vary from slowly expanding, encapsulated tumors to locally aggressive and destructive lesions. The purpose of this study was to determine the expression profile of AMTN in benign odontogenic tumors and to correlate it with specific features of the lesions. Methods: Immunohistochemical staining for AMTN was performed on human ameloblastoma, ameloblastic fibroma (AF, ameloblastic fibro-odontoma (AFO, odontoma, adenomatoid odontogenic tumor (AOT and calcifying cystic odontogenic tumor (CCOT. Results: Generally, ameloblastoma and AF did not stain for AMTN. A strong signal was detected in ameloblast-like layers of AFO and odontoma. Epithelial cells in AOT did not stain for AMTN, while calcifying areas of extracellular eosinophilic matrix were intensely stained. Interestingly, ghost cells present in odontomas and CCOT revealed variable staining, again in association with calcification foci. Conclusions: Amelotin expression was consistently detected in tumors presenting differentiated ameloblasts and obvious matrix deposition. Additionally, the presence of the protein in the eosinophilic matrix and small mineralized foci of AOT and calcification areas of ghost cells may suggest a role for AMTN in the control of mineralization events. [J Interdiscipl Histopathol 2013; 1(5.000: 236-245

  6. Role of laser therapy in benign prostate hyperplasia (BPH)

    Science.gov (United States)

    de Riese, Werner T.; Sharpe, Brent A.; Aronoff, David B.; Mittemeyer, Bernhard T.

    2001-05-01

    Benign prostatic hyperplasia (BPH) is a common disease in males older than 50 years of age. 75-80% of this population is considered to have some degree of BPH causing clinical symptoms and requiring urological treatment. Transurethral resection of the prostate (TUR-P) is currently the standard surgical treatment modality for BPH. In an attempt to minimize the need for hospitalization and the associated perioperative and postoperative morbidity, alternatives have been sought. Various types of laser techniques such as interstitial laser coagulation and side-firing technology have been proposed. Numerous studies have shown that laser procedures safely and effectively reduce the volume of the prostate. Intra- and postoperative bleeding are nearly unknown complications for laser procedures, whereas this is the most relevant complication for the TUR-P. Due to significant tissue edema after laser treatment, patients commonly show delayed time to void adequately and, therefore, catheter drainage is often necessary for 3 to 21 days. Retrograde ejaculation is reported to occur less (0- 10%) compared to TUR-P (greater than 60%). Urinary tract infections are very common after interstitial laser coagulation. Although not many long-term clinical data are available, various studies have shown that BPH patients improve in symptom score, flow rate and post-void residual up to 3 years after laser treatment. This paper presents a concise review of efficacy, advantages and disadvantages of the most frequently used laser techniques as well as the long-term clinical data compared to TUR-P.

  7. Benign prostatic hyperplasia: An overview of existing treatment

    Directory of Open Access Journals (Sweden)

    Neelima Dhingra

    2011-01-01

    Full Text Available Benign prostatic hyperplasia (BPH is the most common condition in aging men, associated with lower urinary tract symptoms (LUTS. A better understanding of the prostate physiology, function, and pathogenesis has led to the development of promising agents, useful in the management of LUTS in men. The specific approach used to treat BPH depends upon number of factors like age, prostrate size, weight, prostate-specific antigen level, and severity of the symptoms. 5α-reductase inhibitors decrease the production of dihydrotestosterone within the prostate, which results in decreased prostate volume, increased peak urinary flow rate, improvement of symptoms, decreased risk of acute urinary retention, and need for surgical intervention. α1 -adrenergic receptor (α1 -AR antagonists decrease LUTS and increase urinary flow rates in men with symptomatic BPH, but do not reduce the long-term risk of urinary retention or need for surgical intervention. Clinical efficacy of either 5α-reductase inhibitor or α1 -AR antagonist has been further improved by using combination therapy; however, long-term outcomes are still awaited. Many more potential new therapies are under development that may improve the treatment of BPH. This article gives a brief account of rationale and efficacy of different treatment options presently available in the management of BPH.

  8. Cervical removal at hysterectomy for benign disease. Risks and benefits.

    Science.gov (United States)

    Hasson, H M

    1993-10-01

    An assessment of the risks and benefits of total and subtotal hysterectomy for benign disease was performed using the published literature, including a MEDLINE search, on all studies dealing with hysterectomy and related topics from 1946 to 1992. The shift from subtotal to total hysterectomy occurred before cytologic screening was accepted. Currently, SIL is diagnosed by cytology, evaluated by colposcopy and treated preferentially with cone biopsy. Prophylactic removal of the cervix does not eliminate the risk of cancer: it may shift the risk to the vaginal epithelium. The cervix has a role in sexual arousal and orgasm, probably due to stimulation of the Frankenhauser uterovaginal plexus. Bladder and bowel dysfunction following total hysterectomy may be related to loss of nerve ganglia closely associated with the cervix. Increased operative and postoperative morbidity, vaginal shortening, vault prolapse, abnormal cuff granulations and oviductal prolapse are other disadvantages of total hysterectomy. The cervix is not a useless organ and should not be removed during hysterectomy without a proper indication. PMID:8263867

  9. Endoscopic incisional therapy for benign esophagealstrictures: Technique and results

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    Benign esophageal strictures refractory to the conventionalballoon or bougie dilatation may be subjected to variousadjunctive modes of therapy, one of them beingendoscopic incisional therapy (EIT). A proper delineationof the stricture anatomy is a prerequisite. A host ofelectrocautery and mechanical devices may be used,the most common being the use of needle knife, eitherstandard or insulated tip. The technique entails radialincision and cutting off of the stenotic rim. Adjunctivetherapies, to prevent re-stenosis, such as balloon dilatation,oral or intralesional steroids or argon plasma coagulationcan be used. The common strictures where EIT has beensuccessfully used are Schatzki's rings (SR) and anastomoticstrictures (AS). Short segment strictures (〈 1 cm) havebeen found to have the best outcome. When comparedwith routine balloon dilatation, EIT has equivalent resultsin treatment na?ve cases but better long term outcomein refractory cases. Anecdotal reports of its use in othertypes of strictures have been noted. Post procedurecomplications of EIT are mild and comparable to dilatationtherapy. As of the current evidence, incisional therapy canbe used for management of refractory AS and SR withrelatively short stenosis (〈 1 cm) with good safety profileand acceptable long term patency.

  10. Environmentally Benign Technology for Efficient Warm-White Light Emission

    Science.gov (United States)

    Shen, Pin-Chun; Lin, Ming-Shiun; Lin, Ching-Fuh

    2014-06-01

    Nowadays efficient down conversion for white light emission is mainly based on rare-earth doped phosphors or cadmium-containing quantum dots. Although they exhibit high luminescence efficiency, the rare-earth mining and cadmium pollution have so far led to extremely high environmental cost, which conflicts the original purpose of pursuing efficient lighting. Here, we explore a new strategy to achieve efficient luminescence conversion based on polymer-decorated nanoparticles. The ZnO and Mn2+ doped ZnS nanoparticles are encapsulated by poly(9,9-di-n- hexylfluorenyl-2,7-diyl). The resultant core-shell nanocomposites then encompass three UV-to-visible luminescence conversion routes for photon emissions at blue, green, and orange colors, respectively. As a result, the color temperature is widely tunable (2100 K ~ 6000 K), so candle light or pure white light can be generated. The quantum yield up to 91% could also be achieved. Such rare-earth-element free nanocomposites give the bright perspectives for energy-saving, healthy, and environmentally benign lighting.

  11. Role of benign ovarian cysts in the development of adenomyosis

    Science.gov (United States)

    Alam, Sadaf; Ahmad, Sajjad; Khan, Muhammad M.; Nasir, Sabeen; Sharif, Naveed; Ziaullah, Sara; Khalid, Ahmareen; Rauf, Fozia

    2016-01-01

    Objectives: To assess the association of adenomyotic foci with co-existing benign ovarian cysts. Methods: This prospective cross-sectional study consisted of 100 consecutive hysterectomy specimens referred to Histopathology Section of Pathology Department, Peshawar Medical College, Peshawar, Pakistan by its attached teaching hospitals from January 2011 to December 2012. Hematoxylin and eosin stained sections were examined for adenomyotic foci and the presence of co-existent ovarian cysts. For evaluation of estrogen receptor (ER) status immunohistochemical stains were applied and H-scoring system was used with a score >50 as positive. Results: Out of the 100 hysterectomy specimens, 25 cases had both adenomyosis and ovarian cysts. The ER status of adenomyotic foci was positive in 20% cases and negative in 80% cases. The commonest type of ovarian cyst was hemorrhagic luteal cyst (28%), followed by serous and mucinous cystadenoma (20%) each. Out of the 28% cases of functional cysts, 71.5% were ER positive and 28.5% were ER negative. The p-value for association of ER status of adenomyotic foci with functional cysts was 0.0004; however, p-value was not significant in comparing cases with controls. All 72% cases of nonfunctional cysts were ER negative. However, 44% of functional cysts were not associated with adenomyotic foci. Conclusion: This study concludes that besides functional ovarian cysts, other local factors may be responsible for the development of adenomyosis. PMID:27570851

  12. Environmentally benign destruction of waste energetic materials (EMs)

    International Nuclear Information System (INIS)

    Studies by the U. S. Army Corps of Engineers during 1991-1997 involving various methods for the destruction of waste generated by pyrotechnic, explosive and propellant materials are described. The methods assessed and evaluated include controlled incineration (CI), wet air oxidation (WAO), and hydrothermal oxidation (HTO), using a U.S. Army triple-base propellant as the initial common standard for all destructor comparative testing. All three of these methods has special feed line restrictions requiring mechanical diminution and comminution of the energetic material which, for safety reasons, cannot be used with contaminated heterogeneous production wastes. Supercritical fluid extraction with carbon dioxide, alkaline hydrolysis, electrolysis and fluid cutting with very high pressure water jets and liquid nitrogen are alternate technologies that were evaluated as pre-treatment for production wastes. Wet air oxidation and electrochemical reduction studies were conducted using the U.S. Navy double propellant NOSIH-AA2, which contains a lead-based ballistic modifier. Wet air oxidation and hydrothermal oxidation studies were done using potassium dinitramide phase-stabilized nitrate as an oxidizer. All of these technologies are considered to be suitable for the environmentally benign destruction of pyrotechnic materials, including fireworks. 17 refs., 8 tabs., 4 figs

  13. Fibronectin Pattern in Benign Hyperplasia and Cancer of the Prostate

    Directory of Open Access Journals (Sweden)

    Miroslava M. Janković

    2008-01-01

    Full Text Available Fibronectin (FN is a multifunctional glycoprotein involved in cell-matrix interactions. It exhibits a complex pattern of forms differing in respect to aminoacid and oligosaccharide composition. In this study we examined glycobiochemical and functional properties of the FN in benign prostatic hyperplasia (BPH and prostatic cancer (PCa, attempting to resolve disease-related differences. Two BPH sera pools and three PCa sera pools were used as the FN source. The affinity-purified molecule was characterized by SDS-PAGE, immuno- and lectin blot, lectin-affinity chromatography and adhesion assay. BPH FN existed as intact molecule, giving the main immunoreactive band at 220 kDa. In contrast, PCa FN comprised three main immunoreactive fragments of 140, 110 and 90 kDa. As for glycosylation the ratio of altogether lectin-reactive PCa FN was different from that of BPH FN manifested as a decrease of Con A- and an increase of LCA-reactive moieties. Fibroblasts adhered to both FN preparations in a concentration dependent manner, but with a significantly lower efficiency to PCa FN. The results obtained showing distinct structural characteristics of PCa FN compared to BPH FN could be important for modulation of its ligand and recognition properties expressed as gain or loss of functions or as specific markers of its origin.

  14. Magnetic resonance imaging in the diagnosis of benign and malignant pelvic tumors; Magnetresonanztomographie benigner und maligner Tumoren des weiblichen Beckens

    Energy Technology Data Exchange (ETDEWEB)

    Hauth, E.A.M.; Stattaus, J.; Debatin, J.F.; Ruehm, S.G. [Universitaetsklinikum Essen (Germany). Inst. fuer Diagnostische und Interventionelle Radiologie

    2004-06-01

    Magnetic resonance imaging (MRI) is an accepted imaging method for diagnosing diseases of the female pelvis. This review article describes the role of MR imaging for the diagnosis of benign and malignant pelvic tumors. Sagittal T2-weighted fast spin echo sequences can be effectively applied to diagnose leiomyomas of the uterus and provide exact pretreatment measurements of size and localization. In the diagnostic work-up endometrial carcinoma, fat-saturated, T1-weighted gradient echo sequences make it possible to determine precisely how deep myometrial infiltration extends and what tissue should be included in preoperative treatment planning. In cervical cancer staging, MRI permits both assessment of local tumor extent and determination of tumor volume for planning and monitoring radiotherapy. The usefulness of MRI in cervical cancer staging is, however, limited since not all early-stage cancer (FIGO stage I A and small stage I B tumors) can be detected. Hence, it appears that the use of MRI as a screening method for cervical cancer cannot be recommended. MRI can distinguish between benign and malignant ovarian tumors with high sensitivity and specificity. Standard and fat-saturated T1-weighted sequences usually can diagnose teratomas with a specificity of 100%. Axial fat-saturated, contrast enhanced T1-weighted spin echo sequences are useful in the staging of malignant ovarian tumors since they facilitate evaluation of their internal structure and will disclose peritoneal metastases. Besides staging of ovarian cancer, MRI can be applied for localization and for monitoring treatment response. (orig.) [German] Die Magnetresonanztomographie (MRT) gilt als etabliertes Verfahren in der bildgebenden Diagnostik von Pathologien des weiblichen Beckens. Die vorliegende Uebersichtsarbeit beschreibt die Rolle der MRT in der Diagnostik benigner und maligner Tumoren unter Verwendung geeigneter Untersuchungstechniken. Sagittale T2-gewichtete FSE-Sequenzen sind zur Diagnostik von

  15. Global N-acetylaspartate concentration in benign and non-benign multiple sclerosis patients of long disease duration

    Energy Technology Data Exchange (ETDEWEB)

    Achtnichts, Lutz [Departments of Neurology and Neuroradiology, University Hospital Basel, Petersgraben 4, CH-4031 Basel (Switzerland); Gonen, Oded, E-mail: oded.gonen@nyumc.org [Department of Radiology, New York University School of Medicine, 660 First Avenue, 4th Floor, New York, NY 10016 (United States); Rigotti, Daniel J.; Babb, James S. [Department of Radiology, New York University School of Medicine, 660 First Avenue, 4th Floor, New York, NY 10016 (United States); Naegelin, Yvonne [Departments of Neurology and Neuroradiology, University Hospital Basel, Petersgraben 4, CH-4031 Basel (Switzerland); Penner, Iris-Katharina; Bendfeldt, Kerstin [Department of Cognitive Psychology and Methodology, University of Basel, Missionsstrasse 60/62, 4055 Basel (Switzerland); Hirsch, Jochen; Amann, Michael; Kappos, Ludwig [Departments of Neurology and Neuroradiology, University Hospital Basel, Petersgraben 4, CH-4031 Basel (Switzerland); Gass, Achim [Departments of Neurology and Neuroradiology, University Hospital Basel, Petersgraben 4, CH-4031 Basel (Switzerland); Dept. of Neurology, Universitaetsmedizin Mannheim, University of Heidelberg (Germany)

    2013-12-01

    Background and objective: To examine whether clinically benign multiple sclerosis patients (BMS) show similar losses of their global N-acetylaspartate (NAA) neuronal marker relative to more clinically disabled patients of similar disease duration. Methods: The whole-brain NAA concentration (WBNAA) was acquired with whole-head non-localizing proton MR spectroscopy. Fractional brain parenchymal volume (fBPV), T{sub 2} and T{sub 1} lesion loads, were obtained from the MRI in: (i) 24 BMS patients: 23.1 ± 7.2 years disease duration, median Expanded Disability Status Scale (EDSS) score of 2.0 (range: 0–3); (ii) 26 non-benign MS patients (non-BMS), 24.5 ± 7.4 years disease duration, median EDSS of 4.0 (range: 3.5–6.5); (iii) 15 healthy controls. Results: Controls’ 12.4 ± 2.3 mM WBNAA was significantly higher than the BMS's and non-BMS's 10.5 ± 2.4 and 9.9 ± 2.1 mM (both p < 0.02), but the difference between the patients’ groups was not (p > 0.4). Likewise, the controls’ 81.2 ± 4.5% fBPV exceeded the BMS and non-BMS's 77.0 ± 5.8% and 76.3 ± 8.6% (p < 0.03), which were also not different from one another (p > 0.7). BMS patients’ T{sub 1}-hypointense lesion load, 2.1 ± 2.2 cm{sup 3}, was not significantly different than the non-BMS's 4.1 ± 5.4 cm{sup 3} (p > 0.08) and T{sub 2}-hyperintense loads: 6.0 ± 5.7 cm{sup 3} and 8.7 ± 7.8 cm{sup 3}, were also not different (p > 0.1). Conclusions: WBNAA differentiates normal controls from MS patients but does not distinguish BMS from more disabled MS patients of similar disease duration. Nevertheless, all MS patients who remain RR for 15+ years suffered WBNAA loss similar to the average RR MS population at fourfold shorter disease duration suggesting relative global neuronal sparing or leveling-off of the neurodegeneration rate.

  16. Non-Toxic Metabolic Management of Metastatic Cancer in VM Mice: Novel Combination of Ketogenic Diet, Ketone Supplementation, and Hyperbaric Oxygen Therapy.

    Science.gov (United States)

    Poff, A M; Ward, N; Seyfried, T N; Arnold, P; D'Agostino, D P

    2015-01-01

    The Warburg effect and tumor hypoxia underlie a unique cancer metabolic phenotype characterized by glucose dependency and aerobic fermentation. We previously showed that two non-toxic metabolic therapies - the ketogenic diet with concurrent hyperbaric oxygen (KD+HBOT) and dietary ketone supplementation - could increase survival time in the VM-M3 mouse model of metastatic cancer. We hypothesized that combining these therapies could provide an even greater therapeutic benefit in this model. Mice receiving the combination therapy demonstrated a marked reduction in tumor growth rate and metastatic spread, and lived twice as long as control animals. To further understand the effects of these metabolic therapies, we characterized the effects of high glucose (control), low glucose (LG), ketone supplementation (βHB), hyperbaric oxygen (HBOT), or combination therapy (LG+βHB+HBOT) on VM-M3 cells. Individually and combined, these metabolic therapies significantly decreased VM-M3 cell proliferation and viability. HBOT, alone or in combination with LG and βHB, increased ROS production in VM-M3 cells. This study strongly supports further investigation into this metabolic therapy as a potential non-toxic treatment for late-stage metastatic cancers. PMID:26061868

  17. Revealing the Function and the Structural Model of Ts4: Insights into the "Non-Toxic" Toxin from Tityus serrulatus Venom.

    Science.gov (United States)

    Pucca, Manuela B; Cerni, Felipe A; Peigneur, Steve; Bordon, Karla C F; Tytgat, Jan; Arantes, Eliane C

    2015-07-01

    The toxin, previously described as a "non-toxic" toxin, was isolated from the scorpion venom of Tityus serrulatus (Ts), responsible for the most severe and the highest number of accidents in Brazil. In this study, the subtype specificity and selectivity of Ts4 was investigated using six mammalian Nav channels (Nav1.2→Nav1.6 and Nav1.8) and two insect Nav channels (DmNav1 and BgNav). The electrophysiological assays showed that Ts4 specifically inhibited the fast inactivation of Nav1.6 channels, the most abundant sodium channel expressed in the adult central nervous system, and can no longer be classified as a "non-toxic peptide". Based on the results, we could classify the Ts4 as a classical α-toxin. The Ts4 3D-structural model was built based on the solved X-ray Ts1 3D-structure, the major toxin from Ts venom with which it shares high sequence identity (65.57%). The Ts4 model revealed a flattened triangular shape constituted by three-stranded antiparallel β-sheet and one α-helix stabilized by four disulfide bonds. The absence of a Lys in the first amino acid residue of the N-terminal of Ts4 is probably the main responsible for its low toxicity. Other key amino acid residues important to the toxicity of α- and β-toxins are discussed here. PMID:26153865

  18. Improved efficiency of a large-area Cu(In,Ga)Se₂ solar cell by a nontoxic hydrogen-assisted solid Se vapor selenization process.

    Science.gov (United States)

    Wu, Tsung-Ta; Hu, Fan; Huang, Jyun-Hong; Chang, Chia-ho; Lai, Chih-chung; Yen, Yu-Ting; Huang, Hou-Ying; Hong, Hwen-Fen; Wang, Zhiming M; Shen, Chang-Hong; Shieh, Jia-Min; Chueh, Yu-Lun

    2014-04-01

    A nontoxic hydrogen-assisted solid Se vapor selenization process (HASVS) technique to achieve a large-area (40 × 30 cm(2)) Cu(In,Ga)Se2 (CIGS) solar panel with enhanced efficiencies from 7.1 to 10.8% (12.0% for active area) was demonstrated. The remarkable improvement of efficiency and fill factor comes from improved open circuit voltage (Voc) and reduced dark current due to (1) decreased interface recombination raised from the formation of a widened buried homojunction with n-type Cd(Cu) participation and (2) enhanced separation of electron and hole carriers resulting from the accumulation of Na atoms on the surface of the CIGS film. The effects of microstructural, compositional, and electrical characteristics with hydrogen-assisted Se vapor selenization, including interdiffusion of atoms and formation of buried homojunction, were examined in detail. This methodology can be also applied to CIS (CuInSe2) thin film solar cells with enhanced efficiencies from 5.3% to 8.5% (9.4% for active area) and provides a facile approach to improve quality of CIGS and stimulate the nontoxic progress in the large scale CIGS PV industry.

  19. Structures and antifouling properties of low surface energy non-toxic antifouling coatings modified by nano-SiO2 powder

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Antifouling coatings are used to improve the speed and energy efficiency of ships by preventing or- ganisms, such as barnacles and weed, building up on the underwater hull and helping the ships movement through the water. Typically, marine coatings are tributyltin self-polishing copolymer paints containing toxic molecules called biocides. They have been the most successful in combating bio- fouling on ships, but their widespread use has caused severe pollution in the marine ecosystem. The low surface energy marine coating is an entirely non-toxic alternative, which reduces the adhesion strength of marine organisms, facilitating their hydrodynamic removal at high speeds. In this paper, the novel low surface energy non-toxic marine antifouling coatings were prepared with modified acrylic resin, nano-SiO2, and other pigments. The effects of nano-SiO2 on the surface structure and elastic modulus of coating films have been studied, and the seawater test has been carried out in the Dalian Bay. The results showed that micro-nano layered structures on the coating films and the lowest surface energy and elastic modulus could be obtained when an appropriate mass ratio of resin, nano-SiO2, and other pigments in coatings approached. The seawater exposure test has shown that the lower the sur- face energy and elastic modulus of coatings are, the less the marine biofouling adheres on the coating films.

  20. Structures and antifouling properties of low surface energy non-toxic antifouling coatings modified by nano-SiO2 powder

    Institute of Scientific and Technical Information of China (English)

    CHEN MeiLing; QU YuanYuan; YANG Li; GAO Hong

    2008-01-01

    Antifouling coatings are used to improve the speed and energy efficiency of ships by preventing or-ganisms, such as barnacles and weed, building up on the underwater hull and helping the ships movement through the water. Typically, marine coatings are tributyltin self-polishing copolymer paints containing toxic molecules called biocides. They have been the most successful in combating bio-fouling on ships, but their widespread use has caused severe pollution in the marine ecosystem. The low surface energy marine coating is an entirely non-toxic alternative, which reduces the adhesion strength of marine organisms, facilitating their hydrodynamic removal at high speeds. In this paper, the novel low surface energy non-toxic marine antifouling coatings were prepared with modified acrylic resin, nano-SiO2, and other pigments. The effects of nano-SiO2 on the surface structure and elastic modulus of coating films have been studied, and the seawater test has been carried out in the Dalian Bay. The results showed that micro-nano layered structures on the coating films and the lowest surface energy and elastic modulus could be obtained when an appropriate mass ratio of resin, nano-SiO2, and other pigments in coatings approached. The seawater exposure test has shown that the lower the sur-face energy and elastic modulus of coatings are, the less the marine biofouling adheres on the coating films.

  1. Non-Toxic Metabolic Management of Metastatic Cancer in VM Mice: Novel Combination of Ketogenic Diet, Ketone Supplementation, and Hyperbaric Oxygen Therapy.

    Directory of Open Access Journals (Sweden)

    A M Poff

    Full Text Available The Warburg effect and tumor hypoxia underlie a unique cancer metabolic phenotype characterized by glucose dependency and aerobic fermentation. We previously showed that two non-toxic metabolic therapies - the ketogenic diet with concurrent hyperbaric oxygen (KD+HBOT and dietary ketone supplementation - could increase survival time in the VM-M3 mouse model of metastatic cancer. We hypothesized that combining these therapies could provide an even greater therapeutic benefit in this model. Mice receiving the combination therapy demonstrated a marked reduction in tumor growth rate and metastatic spread, and lived twice as long as control animals. To further understand the effects of these metabolic therapies, we characterized the effects of high glucose (control, low glucose (LG, ketone supplementation (βHB, hyperbaric oxygen (HBOT, or combination therapy (LG+βHB+HBOT on VM-M3 cells. Individually and combined, these metabolic therapies significantly decreased VM-M3 cell proliferation and viability. HBOT, alone or in combination with LG and βHB, increased ROS production in VM-M3 cells. This study strongly supports further investigation into this metabolic therapy as a potential non-toxic treatment for late-stage metastatic cancers.

  2. Expression, purification, and characterization of protective MPT64 antigen protein and identification of its multimers isolated from nontoxic Mycobacterium tuberculosis H37Ra.

    Science.gov (United States)

    Chu, Teng-Ping J; Yuann, Jeu-Ming P

    2011-05-01

    MPT64, a secreted protein of Mycobacterium tuberculosis (MTB), stimulates the immune reactions within cells and is a protective antigen that is lost by the bacilli Calmette-Guérin (BCG) vaccine during propagation. To minimize the toxicity caused by MTB, we used the MPT64 gene encoded by nontoxic H37Ra MTB to carry out genetic expansion via polymerase chain reaction and gene clone MPT64. The plasmid DNA encoded MPT64 was expressed at 20°C for 22 H, and a large quantity of MPT64 was obtained. In the absence of urea, MPT64 multimers with subunits being covalently connected via disulfide bonds were detected by Western blot showing strong protein-protein interactions, as evidenced by the formation of MPT64 tetramers. Finally, with urea of decreasing concentrations, we refolded MPT64 purified in the presence of urea and determined its secondary structures using circular dichroism. MPT64 was found to contain 2.2% α-helix, 50.9% β-sheet, 19.5% turn, and 27.4% random coil. The molecular weight of MPT64 was determined by a matrix-assisted laser desorption ionization-time of flight mass spectrometer and found to be 23,497 Da, very close to the theoretical molecular weight of MPT64. The results presented here provide a sound basis for future biochemical and biophysical studies of MPT64 or any other proteins encoded by nontoxic H37Ra MTB.

  3. Detection of helicobacter pylori in benign laryngeal lesions by polymerase chain reaction: a cross sectional study

    Directory of Open Access Journals (Sweden)

    Izadi Farzad

    2012-04-01

    Full Text Available Abstract Background Although Helicobacter Pylori (HP was detected in some cases of chronic laryngitis, the results were not confirmed by polymerase chain reaction (PCR. By this time, it has not been found in laryngeal lesions by in house PCR, the most sensitive method for detecting the genome tracks. Regarding the previous results and also few numbers of studies about the presence of HP in benign laryngeal lesions, specifically by PCR, we aimed to investigate the presence of HP in benign laryngeal lesions by in-house PCR. Methods The samples were taken from 55 patients with benign laryngeal lesions and frozen in −20°C. One milliliter (ml of lysis buffer was added to 100 mg (mg of each sample and the tube was placed in 56°C overnight. Then DNA extraction was carried out. Results To find HP DNA, in-house PCR was performed that revealed 5 positive results among 55 patients with benign laryngeal lesions. Of them, 3 were polyp, 1 was nodule and 1 was papilloma. Conclusion Although the number of positive results was not a lot in this study, it was in contrast with previous studies which could not find any HP tracks in benign laryngeal lesions by other methods. More studies about the prevalence of HP in benign laryngeal lesions improve judging about the effect of this infection on benign laryngeal lesions.

  4. Benign cystic mesothelioma of the appendix presenting in a woman: a case report

    LENUS (Irish Health Repository)

    O' Connor, Donal B

    2010-12-03

    Abstract Introduction Benign cystic mesothelioma or peritoneal inclusion cysts are rare benign abdominal tumors usually occurring in females of reproductive age. These cysts present as abdominopelvic pain or masses but are often found on imaging or incidentally at surgery. They are commonly associated with pelvic inflammatory disease, endometriosis, or ovarian cysts. We report what is, to the best of our knowledge, the first case of a benign cystic mesothelioma complicating a presentation of acute appendicitis. Case Presentation A 19-year-old Irish Caucasian woman presented with abdominal pain. Imaging suggested appendicitis with abscess formation. She was treated with antibiotics and scheduled for interval appendicectomy. At laparoscopy, an unusual cystic mass was found arising from the appendix. Histology revealed benign cystic mesothelioma. Conclusion We report what is, to the best of our knowledge, the first case of a benign cystic mesothelioma arising from the appendix and complicating a presentation of acute appendicitis. This is a benign pathology, but recurrences are not uncommon. Benign cystic mesothelioma should be included in the differential when investigating pelvic masses or abscesses associated with either appendicitis or pelvic inflammatory disease in women.

  5. Development of SCAR marker specific to non-toxic Jatropha curcas L. and designing a novel multiplexing PCR along with nrDNA ITS primers to circumvent the false negative detection

    KAUST Repository

    Mastan, Shaik G.

    2011-05-10

    Jatropha curcas L., a multipurpose shrub, has acquired significant economic importance for its seed oil which can be converted to biodiesel an emerging alternative to petro-diesel. In addition to the commercial value, it is also having medicinal and even high nutritional value to use as animal fodder which is limited due to the toxicity. Development of molecular marker will enable to differentiate non-toxic from toxic variety of J. curcas in a mixed population and also for quality control since the toxic components of J. curcas has deleterious effect on animals. In the present study, the efforts were made to generate the specific SCAR marker for toxic and/or non-toxic J. curcas from RAPD markers. Among the markers specific for toxic and non-toxic varieties, four were selected, purified, cloned, sequenced, and designed primers out of which one set of primers NT-JC/SCAR I/OPQ15-F and R could able to discriminate the non-toxic with toxic Jatropha by giving expected 430 bp size amplification in non-toxic variety. Furthermore, novel multiplex PCR was designed using the nrDNA ITS primers to overcome the false negatives. Present work also demonstrates utility of the conserved regions of nrDNA coding genes in ruling out the artifacts in PCR-like false negatives frequently occur in SCAR due to various reasons. The specific SCAR markers generated in the present investigation will help to distinguish non-toxic from toxic varieties of J. curcas or vice versa, and isolated marker along with designed multiplex protocol has applications in quality control for selective cultivation of non-toxic variety and will also assist in breeding and molecular mapping studies. © 2011 Springer Science+Business Media, LLC.

  6. Benign breast lesions detected by positron emission tomography-computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Benveniste, Ana P., E-mail: apbenveniste@mdanderson.org [Department of Diagnostic Radiology,The University of Texas MD Anderson Cancer Center, Houston, TX (United States); Yang, Wei, E-mail: wyang@mdanderson.org [Department of Diagnostic Radiology,The University of Texas MD Anderson Cancer Center, Houston, TX (United States); Benveniste, Marcelo F., E-mail: mfbenveniste@mdanderson.org [Department of Diagnostic Radiology,The University of Texas MD Anderson Cancer Center, Houston, TX (United States); Mawlawi, Osama R., E-mail: omawlawi@mdanderson.org [Department of imaging physics, The University of Texas MD Anderson Cancer Center, Houston, TX (United States); Marom, Edith M., E-mail: emarom@mdanderson.org [Department of Diagnostic Radiology,The University of Texas MD Anderson Cancer Center, Houston, TX (United States)

    2014-06-15

    {sup 18}F-fluorodeoxyglucose positron emission computed tomography (FDG PET-CT) is widely used in the initial staging and response evaluation of patients with malignancy. This review describes a spectrum of benign breast findings incidentally detected by FDG PET-CT at staging that may be misinterpreted as malignancy. We describe the pattern of distribution and intensity of FDG uptake in a spectrum of benign breast diseases with their corresponding typical morphological imaging characteristics to help the nuclear medicine physician and/or general radiologist identify benign lesions, avoiding unnecessary breast imaging work-up and biopsies.

  7. Prevalence of Helicobacter pylori in benign gastric ulcers in a cohort of Sri Lankan patients.

    Science.gov (United States)

    Wijetunge, S; Kotakadeniya, R; Noordeen, F; Buharideen, S M; Samarasinghe, B; Dharmapala, A; Galketiya, K B

    2015-12-01

    Helicobacter pylori prevalence is decreasing globally and prevalence of non H. pylori gastric ulcers is increasing. The following study was conducted to assess the prevalence of H. pylori in benign gastric ulcers in a sample of Sri Lankan patients. This was a cross-sectional study of 59 dyspeptic patients with benign gastric ulcers. Multiple endoscopic gastric biopsies were obtained and histology, immunohistochemistry and polymerase chain reaction were performed for H. pylori detection. An immunochromatography assay was performed to detect blood anti H. pylori antibodies. Four (6.8%) were positive for H. pylori. Therefore, it is likely that most benign gastric ulcers are of non-H. pylori aetiology.

  8. Ultrasound-guided sclerotherapy for benign non-thyroid cystic mass in the neck

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Ji Hoon [Dept. of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul (Korea, Republic of)

    2014-04-15

    Surgical excision has traditionally been the treatment of choice for benign non-thyroid cystic neck masses, including lymphatic malformation, ranula, branchial cleft cyst, thyroglossal duct cyst, and parathyroid cyst. However, there is a tendency toward recurrence after surgery, and surgery may be accompanied by complications, including nerve injuries, vascular injuries, and scar formation. Ultrasound-guided sclerotherapy using various agents has been challenged and successfully applied as an alternative treatment for benign non-thyroid cystic neck masses. This report reviews the available sclerosing agents and describes the applications of sclerotherapy to the treatment of benign cystic masses in the neck.

  9. Radiological and clinical observation on benign prostatic hyperplasia

    International Nuclear Information System (INIS)

    A radiological and clinical observation was made on 77 cases of benign prostatic hyperplasia admitted to the department of Urology, Cho-Sun University Hospital during the period from January 1972 to December 1979 and following results were obtained. 1. Incidence of PBH was 8.1% to 953 total inpatients, 11.3% to 679 male inpatients, and 34.5% to male inpatients of 50 years more. 2. Majority of cases was found in 7th and 8th decades (80.5%) with mean age of 69.4 years old. 3. A gradual tendency of annual increase of the cases was observed and the mean interval elapsed from initial symptoms to visit was 29.9 months. Common symptoms were dysuria in 72 cases (93.5%), hematuria in 53 cases (68.8%), frequency in 51 cases (66.2%) and 12 cases (15.6%) were acute urinary retention. 4. I. V. P. findings of BPH were elevation of the bladder base in 71 cases (92.2%), trabeculation of the bladder wall in 58 cases (75.3%), hypertrophy of the bladder in 24 cases (31.2%) and the complications-hydronephrosis and hydroureter 16 cases (20.8%), bladder diverticula 9 cases (11.7%) and bladder stone were 5 cases (6.5%). 5. Cystourethrographic findings of the posterior urethra with 33 cases of PBH were smooth, gentle sloping in 28 cases 84.8%), widening in sagittal plane in 23 cases (69.7%), elongation and narrowing of the urethra in 26 cases (78.8%)

  10. Various treatment options for benign prostatic hyperplasia: A current update.

    Science.gov (United States)

    Shrivastava, Alankar; Gupta, Vipin B

    2012-01-01

    In benign prostatic hyperplasia (BPH) there will be a sudden impact on overall quality of life of patient. This disease occurs normally at the age of 40 or above and also is associated with sexual dysfunction. Thus, there is a need of update on current medications of this disease. The presented review provides information on medications available for BPH. Phytotherapies with some improvements in BPH are also included. Relevant articles were identified through a search of the English-language literature indexed on MEDLINE, PUBMED, Sciencedirect and the proceedings of scientific meetings. The search terms were BPH, medications for BPH, drugs for BPH, combination therapies for BPH, Phytotherapies for BPH, Ayurveda and BPH, BPH treatments in Ayurveda. Medications including watchful waitings, Alpha one adrenoreceptor blockers, 5-alpha reductase inhibitors, combination therapies including tamsulosin-dutasteride, doxazosin-finasteride, terazosin-finasteride, tolterodine-tamsulosin and rofecoxib-finasteride were found. Herbal remedies such as Cernilton, Saxifraga stolonifera, Zi-Shen Pill (ZSP), Orbignya speciosa, Phellodendron amurense, Ganoderma lucidum, Serenoa Repens, pumpkin extract and Lepidium meyenii (Red Maca) have some improvements on BPH are included. Other than these discussions on Ayurvedic medications, TURP and minimally invasive therapies (MITs) are also included. Recent advancements in terms of newly synthesized molecules are also discussed. Specific alpha one adrenoreceptor blockers such as tamsulosin and alfuzosin will remain preferred choice of urologists for symptom relief. Medications with combination therapies are still needs more investigation to establish as preference in initial stage for fast symptom relief reduced prostate growth and obviously reduce need for BPH-related surgery. Due to lack of proper evidence Phytotherapies are not gaining much advantage. MITs and TURP are expensive and are rarely supported by healthcare systems. PMID:22923974

  11. Genetic alterations in benign lesions: Chronic gastritis and gastric ulcer

    Institute of Scientific and Technical Information of China (English)

    Ana Cristina Gobbo César; Marília de Freitas Calmon; Patrícia Maluf Cury; Alaor Caetano; Aldenis Albaneze Borim; Ana Elizabete Silva

    2006-01-01

    AIM: To investigate the occurrence of chromosome 3, 7,8, 9, and 17 aneuploidies, TP53 gene deletion and p53 protein expression in chronic gastritis, atrophic gastritis and gastric ulcer, and their association with H pylori infection.METHODS: Gastric biopsies from normal mucosa (NM,n = 10), chronic gastritis (CG,n =38), atrophic gastritis (CAG, n=13) and gastric ulcer (GU, n = 21) were studied using fluorescence in situ hybridization (FISH) and immunohistochemical assay. A modified Giemsa staining technique and PCR were used to detect H pylori. An association of the gastric pathologies and aneuploidies with H pylori infection was assessed.RESULTS: Aneuploidies were increasingly found from CG (21%) to CAG (31%) and to GU (62%), involving mainly monosomy and trisomy 7, trisomies 7 and 8, and trisornies 7, 8 and 17, respectively. A significant association was found between H pylori infection and aneuploidies in CAG (P= 0.0143) and GU (P= 0.0498). No TP53 deletion was found in these gastric lesions, but p53-positive immunoreactivity was detected in 45% (5/11) and 12% (2/17) of CG and GU cases, respectively. However, there was no significant association between p53 expression and H pylori infection.CONCLUSION: The occurrence of aneuploidies in benign lesions evidences chromosomal instability in early stages of gastric carcinogenesis associated with H pylori infection, which may confer proliferative advantage. The increase of p53 protein expression in CG and GU may be due to overproduction of the wild-type protein related to an inflammatory response in mucosa.

  12. Does Dysphagia Indicate Recurrence of Benign Esophageal Strictures?

    Directory of Open Access Journals (Sweden)

    Olle Ekberg

    1995-01-01

    Full Text Available Esophageal dilatation in dysphagic patients with benign strictures is usually considered successful if the patients' dysphagia is alleviated. However, the relation between dysphagia and the diameter of a stricture is not well understood. Moreover, the dysphagia may also be caused by an underlying esophageal motor disorder. In order to compare symptoms and objective measurements of esophageal stricture, 28 patients were studied with interview and a radiologic esophagram. The latter included swallowing of a solid bolus. All patients underwent successful balloon dilatation at least one month prior to this study. Recurrence of a stricture with a diameter of less than 13 mm was diagnosed by the barium swallow in 21 patients. Recurrence of dysphagia was seen in 15 patients. Thirteen patients denied any swallowing symptoms. Chest pain was present in 9 patients. Of 15 patients with dysphagia 2 (13% had no narrowing but severe esophageal dysmotility. Of 13 patients without dysphagia 9 (69% had a stricture with a diameter of 13 mm or less. Of 21 patients with a stricture of 13 mm or less 14 (67% were symptomatic while 7 (33% were asymptomatic. Four of 11 patients with retrosternal pain had a stricture of less than 10 mm. Three patients with retrosternal pain and obstruction had severe esophageal dysmotility. Whether or not the patients have dysphagia may be more related to diet and eating habits than to the true diameter of their esophageal narrowing. We conclude that the clinical history is non-reliable for evaluating the results of esophageal stricture dilatation. In order to get an objective measurement of therapeutic outcome, barium swallow including a solid bolus is recommended.

  13. Benign intracranial hypertension associated to blood coagulation derangements

    Directory of Open Access Journals (Sweden)

    Niglio Alferio

    2006-12-01

    Full Text Available Abstract Background Benign Intracranial Hypertension (BIH may be caused, at least in part, by intracranial sinus thrombosis. Thrombosis is normally due to derangements in blood coagulation cascade which may predispose to abnormal clotting activation or deficiency in natural inhibitors' control. The aim of the study is to examine the strength of the association between risk factors for thrombosis and BIH. Patients and methods The incidence of prothrombotic abnormalities among a randomly investigated cohort of 17 patients with BIH, was compared with 51 healthy subjects matched for sex, age, body mass index, height and social background. Results The number of subjects with protein C deficiency was significantly higher in patients than in controls (3 vs 1, p Increased plasma levels of prothrombin fragment 1+2, fibrinopeptide A (FPA, and PAI-1 were demonstrated in patients group (5.7 ± 1.15 nM vs 0.45 ± 0.35 nM; 8.7 ± 2.5 ng/mL vs 2.2 ± 1.25 ng/mL; 45.7 ± 12.5 ng/mL vs 8.5 ± 6.7 ng/mL, respectively; p Discussion In agreement with other authors our data suggest a state of hypercoagulability in BIH associated with gene polymorphisms. Our findings also showed that mutations in cardiovascular genes significantly discriminate subjects with a BIH history. The association between coagulation and gene derangements, usually regarded to as cryptogenic, may suggest a possible pathogenetic mechanism in BIH. So, a prothrombotic tendency may exist that would, at least in part, explain some cases of BIH. Although based on a small population, these findings raise the exciting possibility of using these haemostatic factors as markers for selecting high-risk subjects in BIH disease.

  14. Outcome of Transurethral Plasmakinetic Vaporization for Benign Prostatic Hyperplasia

    Directory of Open Access Journals (Sweden)

    Magdy El-Tabey

    2015-04-01

    Full Text Available Purpose To assess the outcome of transurethral plasmakinetic vaporization (PKVP in the management of benign prostatic hyperplasia (BPH. Patients and methods From August 2010 to May 2012, 60 patients with obstructive LUTS due to BPH were included in the study. All patients were evaluated by International Prostate Symptom Score (IPSS, general examination, digital rectal examination, PSA, routine laboratory examinations, pelvi-abdominal ultrasound, trans-rectal ultrasound, and uroflowmetry. Patients with Qmax of 8 and a prostate volume of >40 mL underwent transurethral PKVP. Results Mean age of the patients was 66.8±4.5 years. The mean times of the operation, post-operative bladder irrigation, and post-operative catheterization were 63.8±13.9 minutes, 15.2±5.7 hours, and 23.9±5.2 hours, respectively. At 3 months of follow-up, there were significant reductions in the mean IPSS from 23.4±3.5 to 9.2±3.7 (P=0.4, mean PSA from 3.03±2.2 ng/mL to 1.2±1.04 ng/mL (P value=0.02, mean post voiding residual urine from 149.8±59.5 mL to 46.9±24.1 mL (P value <0.01, and mean prostate volume from 72.8±10.3 mL to 22.7±6.1 mL (P value <0.01. Also, there was a statistically significant increase in the mean Q max. from 8.7±2.4 mL/s to 19.5±3.5 mL/s (P value <0.01. Conclusion PKVP is an effective and safe treatment option in the management of symptomatic BPH.

  15. Outbreeding lethality between toxic Group I and nontoxic Group III Alexandrium tamarense spp. isolates: Predominance of heterotypic encystment and implications for mating interactions and biogeography

    Science.gov (United States)

    Brosnahan, Michael L.; Kulis, David M.; Solow, Andrew R.; Erdner, Deana L.; Percy, Linda; Lewis, Jane; Anderson, Donald M.

    2010-02-01

    We report the zygotic encystment of geographically dispersed isolates in the dinoflagellate species complex Alexandrium tamarense, in particular, successful mating of toxic Group I and nontoxic Group III isolates. However, hypnozygotes produced in Group I/III co-cultures complete no more than three divisions after germinating. Previous reports have suggested a mate recognition mechanism whereby hypnozygotes produced in co-cultures could arise from either homotypic (inbred) or heterotypic (outbred) gamete pairs. To determine the extent to which each occurs, a nested PCR assay was developed to determine parentage of individual hypnozygotes. The vast majority of hypnozygotes from pairwise Group I/III co-cultures were outbred, so that inviability was a result of hybridization, not inbreeding. These findings support the assertion that complete speciation underlies the phylogenetic structure of the Alexandrium tamarense species complex. Additionally, the ribosomal DNA (rDNA) copy numbers of both hybrid and single ribotype hypnozygotes were reduced substantially from those of haploid motile cells. The destruction of rDNA loci may be crucial for the successful mating of genetically distant conjugants and appears integral to the process of encystment. The inviability of Group I/III hybrids is important for public health because the presence of hybrid cysts may indicate ongoing displacement of a nontoxic population by a toxic one (or vice versa). Hybrid inviability also suggests a bloom control strategy whereby persistent, toxic Group I blooms could be mitigated by introduction of nontoxic Group III cells. The potential for hybridization in nature was investigated by applying the nested PCR assay to hypnozygotes from Belfast Lough, Northern Ireland, a region where Group I and III populations co-occur. Two hybrid cysts were identified in 14 successful assays, demonstrating that Group I and III populations do interbreed in that region. However, an analysis of mating data

  16. Musculoskeletal adipose tumors of the extremities : benign vs malignancy in MR imaging

    International Nuclear Information System (INIS)

    The purpose of this study was to evaluate the MR findings of benign and malignant musculoskeletal adipose tumors and to determine the points of difference between these two types. This study involved 41 histopathologically proven cases; 26 were benign lipoma and 15 were liposarcoma. T1- and T2-weighted images were obtained in all cases and enhancement study was performed in 15 cases of benign lipoma and 14 of liposarcoma. To determine MR findings and possible differences between the two groups, we retrospectively analyzed size, location, margin, degree of signal intensity, homogeneity, enhancement pattern and internal septa, as seen on MR images. Homogeneity of signal intensity, enhancing pattern and internal septa might be useful MR findings for the differential diagnosis of benign lipoma and liposarcoma. (author). 18 refs., 4 figs

  17. Liver Metastases 9 Years after Removal of a Malignant Insulinoma Which Was Initially Considered Benign

    Directory of Open Access Journals (Sweden)

    Abel Gonzalez-Gonzalez

    2006-03-01

    Full Text Available Context :Insulinomas may be regarded as potentially malignant. A long follow-up period is needed to detect any possible recurrence, even if the initial diagnosis was of a benign insulinoma. Case report :We present the case of a 76- year-old woman with liver metastases due to a malignant insulinoma, which had been diagnosed as benign after its complete removal 9 years earlier. Conclusions :This case shows the difficulty of distinguishing between benign and malignant insulinomas when there is no initial evidence of metastases. This fact poses the need to conduct a long follow-up period in order to detect any possible recurrence even if the initial diagnosis was one of a benign insulinoma.

  18. DNA Cytometry and Nuclear Morphometry in Ovarian Benign, Borderline and Malignant Tumors

    Directory of Open Access Journals (Sweden)

    Amina A. Gamal el Din

    2015-10-01

    CONCLUSION: We suggest that DNA ploidy and nuclear area combined, may be adjuncts to histopathology; in ovarian serous and mucinous benign, borderline and malignant neoplasms; identifying the aggressive borderline tumours.

  19. Gallium scanning in differentiating malignant from benign asbestos-related pleural disease

    International Nuclear Information System (INIS)

    In order to assess the utility of 67gallium citrate in delineating malignant pleural mesothelioma from benign asbestos-related pleural disease, 49 patients with malignant mesothelioma and 16 with benign asbestos-related pleural disease were studied. Seven patients with malignant mesothelioma had no history of asbestos exposure, while the remaining 58 patients were exposed. Forty-three of the 49 patients (88%) with malignant mesothelioma had a positive 67gallium scan including 36 of the 42 (86%) patients with asbestos exposure and all 7 patients without a history of asbestos exposure. Three of 16 patients (19%) with benign asbestos-related pleural disease had a positive scan. 67Gallium radionuclide imaging is nonspecific but may be valuable in noninvasive monitoring of asbestos-exposed populations, which have a high risk for the late development of benign and/or malignant pleural disease

  20. Biomarkers for the diagnosis of prostatic inflammation in benign prostatic hyperplasia

    NARCIS (Netherlands)

    Robert, G.Y.M.; Smit, F.; Hessels, D.; Jannink, S.A.; Karthaus, H.F.M.; Aalders, T.; Jansen, K.; Taille, A. De La; Mulders, P.F.A.; Schalken, J.A.

    2011-01-01

    BACKGROUND: Chronic prostatic inflammation could be a central mechanism in benign prostatic hyperplasia (BPH) progression. Currently, the histological examination of prostate biopsies remains the only way to diagnose prostatic inflammation. Our objective was to find new noninvasive biomarkers for th

  1. Transphyseal spread of benign tumors and infections in pediatric patients: A series of six cases

    Directory of Open Access Journals (Sweden)

    Bagaria Vaibhav

    2005-06-01

    Full Text Available Epiphyseal extension of benign pathology is regarded as an infrequent occurrence. This observation has been attributed to anatomical and biochemical phenomenon unique to physeal cartilage. We report a retrospective series of six patients over a period of 4 years, diagnosed with benign pathologies that showed crossing of an open physeal plate by the disease. Four of these cases were infections and two were benign tumors. The patients were aged between 5 and 11 years, all of them were treated at a tertiary referral centre and followed up for a minimum period of 6 months to evaluate the progress of disease. The findings are more than just a pathological curiosity as they alter the management and surgical procedure that needs to be performed for these conditions. The recognition of the fact that benign tumors may occasionally present with transphyseal spread will prevent unjustified radical procedures that are best reserved for aggressive malignant conditions.

  2. Benign infantile seizures and paroxysmal dyskinesia caused by an SCN8A mutation

    DEFF Research Database (Denmark)

    Gardella, Elena; Becker, Felicitas; Møller, Rikke S;

    2015-01-01

    OBJECTIVE: Benign familial infantile seizures (BFIS), paroxysmal kinesigenic dyskinesia (PKD), and their combination - known as infantile convulsions and paroxysmal choreoathetosis (ICCA) - are related autosomal dominant diseases. PRRT2 (proline-rich transmembrane protein 2 gene) has been...

  3. Benign giant mediastinal schwannoma presenting as cardiac tamponade in a woman: a case report

    Directory of Open Access Journals (Sweden)

    Sekiya Mitsuaki

    2011-02-01

    Full Text Available Abstract Introduction Mediastinal schwannomas are typically benign and asymptomatic, and generally present no immediate risks. We encountered a rare case of a giant benign posterior mediastinal schwannoma, complicated by life-threatening cardiac tamponade. Case presentation We report the case of a 72-year-old Japanese woman, who presented with cardiogenic shock. Computed tomography of the chest revealed a posterior mediastinal mass 150 cm in diameter, with pericardial effusion. The cardiac tamponade was treated with prompt pericardial fluid drainage. A biopsy was taken from the mass, and after histological examination, it was diagnosed as a benign schwannoma, a well-encapsulated non-infiltrating tumor, originating from the intrathoracic vagus nerve. It was successfully excised, restoring normal cardiac function. Conclusion Our case suggests that giant mediastinal schwannomas, although generally benign and asymptomatic, should be excised upon discovery to prevent the development of life-threatening cardiopulmonary complications.

  4. Treatment of malignant and benign biliary obstructions with metal stents; Behandlung maligner und benigner biliaerer Obstruktionen mit Metallstents

    Energy Technology Data Exchange (ETDEWEB)

    Hausegger, K.A.; Kugler, C. [Graz Univ. (Austria). Radiologische Klinik

    2000-04-01

    The palliative treatment of malignant bilary tract obstructions using a metal stent is now an established procedure in clinical practice. An endoscopic, transpapillary approach is the first choice for implantation of the stent. If it is not possible to insert the stent in this way, which is often the case with high obstructions, a percutaneous approach is chosen. It appears to be beneficial to use a metal stent with a finemeshed net such as, for example, the Wall stent. Metal stents have a higher patency rate than plastic stents so that the primary choice of a metal stent is justified. Coated stents have not yet shown any major advantages. In cases of stent occlusion the coaxial implantation of a plastic stent seems to be the most efficient. In cases of benign biliary tract stenoses, a metal stent should only be implanted after a careful evaluation of all possible surgical modalities and exploitation of balloon dilatation and long-term splinting methods. (orig.) [German] Die palliative Behandlung maligner Gallengangsobstruktionen mittels Metallstents ist ein in der klinischen Routine etabliertes Verfahren. Primaer wird der endoskopisch transpapillaere Zugang zur Stentimplantation gewaehlt. Ist eine Stentimplantation auf diesem Weg nicht moeglich, was bei hohen Obstruktionen haeufiger vorkommt, erfolgt die Stentimplantation ueber den perkutanen Zugang. Es scheint sinnvoll, Metallstents mit einem engen Gitternetz wie zum Beispiel den Wallstent zu verwenden. Metallstents haben eine hoehere Offenheitsrate als Plastikstents, so dass die primaere Implantation dieser Stents gerechtfertigt ist. Ummantelte Stents haben bisher keinen wesentlichen Vorteil gebracht. Bei Stentokklusion duerfte die koaxiale Implantation eines Plastikstents am effektivsten sein. Bei benignen Gallengangsstenosen sollten Metallstents nur nach gruendlicher Evaluation der chirurgischen Sanierungsmoeglichkeiten und Ausschoepfung der Moeglichkeiten der Ballondilatation und Langzeitschienung implantiert

  5. Contrast-enhanced ultrasound is helpful in the differentiation of malignant and benign breast lesions

    Energy Technology Data Exchange (ETDEWEB)

    Zhao Hongjia; Xu Rong; Ouyang Qiufang [Department of Ultrasound, The Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou (China); Chen Lidian [Fujian University of Traditional Chinese Medicine, Fuzhou (China)], E-mail: lidianchen87@yahoo.com; Dong Baowei [Department of Ultrasound, PLA 301 General Hospital, Beijing (China); Huihua Ye [Department of Ultrasound, The Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou (China)

    2010-02-15

    Objective: To evaluate the significance of contrast-enhanced ultrasound (CEUS) examination in differential diagnosis of malignant and benign breast lesions. Methods: Seventy-one patients with seventy-six breast tumors are selected randomly. CEUS examinations were performed before and after bolus injection of the contrast agent SonoVue (Bracco, Milan, Italy). Specific sonographic quantification software, Qontrast, was adopted to determine the morphology of vessels. Wash-in and wash-out parameters of each lesion were assessed for both procedures. Results: The final histopathological findings distinguished 45 malignant and 31 benign from all of the lesions. Following SonoVue administration different perfusion phases could be identified: early (0-1 min), mid (1-4 min) and late (4-6 min) phases. In the early phase, CEUS identified 91.1% of malignant tumors characterized by a claw-shaped enhancement, while 83.9% of benign tumors had a homogeneous enhancement, with a statistically significant difference between the two enhancement patterns ({chi}{sup 2} = 43.16, P < 0.01). Moreover, contrast medium persistence in the late phase was helpful in the identification of benign and malignant tumors ({chi}{sup 2} = 46.88, P < 0.01): contrast medium was present in 88.9% of malignant tumors, while in only 9.7% of the benign tumors. The study showed that various parametric imaging color maps for peak intensity and time to peak were mostly suggestive of malignancy, while quite uniform peak intensity and time to peak of color maps were the characteristic of benign tumors. The study also found that malignant lesions presented with a higher maximum intensity signal than benign ones (P < 0.05) on the time-intensity curves. Conclusions: CEUS cooperating with conventional US shows improved accuracy in differentiating between malignant and benign breast tumors. It could be a reliable diagnostic method of breast lesions.

  6. AUA SYMPTOM SCORE - A SIMPLE TOOL FOR ASSESSMENT OF BENIGN PROSTATIC HYPERPLASIA IN A RURAL SETTING

    OpenAIRE

    SP Patel; VK Srivastava

    2013-01-01

    Background: Benign Prostatic Hyperplasia (BPH) is one of the most common disease in ageing men and can be associated with Lower Urinary Tract Symptoms (LUTS) that affect quality of life by interfering with normal daily activities. The American Urological Association Symptoms Index (AUA-SI) is recommended as symptom scoring instrument to be used in initial assessment of each patient presenting with symptoms of prostatism. Objective: To assess the severity of symptoms in Benign Prostatic Hy...

  7. Comparative Study between Febrile Convulsions and Benign Convulsions Associated with Viral Gastroenteritis

    OpenAIRE

    Yu, Jaesung; Jung, Keeyoon; Kang, Hoseok

    2011-01-01

    Background and Purpose: This study was performed to compare the clinical features between febrile convulsions and benign convulsions associated with viral gastroenteritis. Methods: We retrospectively reviewed the medical records of 706 children admitted to the Sunlin Hospital for either febrile convulsions or benign convulsions with viral gastroenteritis, between January 1, 2006, and December 31, 2009. We classified them into group A for febrile convulsions (N = 631), group B for non-rotaviru...

  8. Cellular schwannoma: a rare spinal benign nerve-sheath tumor with a pseudosarcomatous appearance: case report

    OpenAIRE

    Landeiro José Alberto; Ribeiro Carlos Henrique; Galdino Alexandre C.; Taubman Elizabeth; Guarisch Alfredo J.

    2003-01-01

    We report a case of cellular schwannoma, a rare benign nerve-sheath tumor in a 27 year-old woman. It was presented as a voluminous lesion in the paraspinal region that caused lumbar vertebral body destruction. These features, in association to the microscopic aspects of a hypercellular, pleomorphic neoplasm may lead to a false impression of a malignant tumor. Therefore, it is important to have an accurate examination to confirm the benign nature of this tumor thus avoiding unnecessary therapy.

  9. DNA Cytometry and Nuclear Morphometry in Ovarian Benign, Borderline and Malignant Tumors

    OpenAIRE

    Amina A. Gamal el Din; Manal A. Badawi; Shereen E. Abdel Aal; Ibrahim, Nihad A; Morsy, Fatma A.; SHAFFIE, Nermeen M.

    2015-01-01

    BACKDROUND: Ovarian carcinoma is a leading cause of death in gynecological malignancy. Ovarian surface epithelial serous and mucinous tumours are classified as benign, borderline, and malignant. The identification of borderline tumours most likely to act aggressively remains an important clinical issue. AIM: This work aimed to study DNA ploidy and nuclear area in ovarian serous and mucinous; benign, borderline and malignant tumours. MATERIAL AND METHODS: This study included forty ovar...

  10. Role of endoscopic retrograde cholangiopancreatography in the management of benign biliary strictures: What’s new?

    OpenAIRE

    Ferreira, Rosa; Loureiro, Rui; Nunes, Nuno; Santos, António Alberto; Maio, Rui; Cravo, Marília; Duarte, Maria Antónia

    2016-01-01

    Benign biliary strictures comprise a heterogeneous group of diseases. The most common strictures amenable to endoscopic treatment are post-cholecystectomy, post-liver transplantation, related to primary sclerosing cholangitis and to chronic pancreatitis. Endoscopic treatment of benign biliary strictures is widely used as first line therapy, since it is effective, safe, noninvasive and repeatable. Endoscopic techniques currently used are dilation, multiple plastic stents insertion and fully co...

  11. Plastic or metal stents for benign extrahepatic biliary strictures: a systematic review

    OpenAIRE

    Vleggaar Frank P; van Boeckel Petra GA; Siersema Peter D

    2009-01-01

    Abstract Background Benign biliary strictures may be a consequence of surgical procedures, chronic pancreatitis or iatrogenic injuries to the ampulla. Stents are increasingly being used for this indication, however it is not completely clear which stent type should be preferred. Methods A systematic review on stent placement for benign extrahepatic biliary strictures was performed after searching PubMed and EMBASE databases. Data were pooled and evaluated for technical success, clinical succe...

  12. Benign pleomorphic adenoma of minor salivary gland showing perineural invasion: a rare entity.

    Science.gov (United States)

    Jayaram, Rahul; Patel, Dipen; Santhanam, Vijay

    2015-01-01

    Perineural invasion is a rare and sporadically reported histological finding in relation to benign lesions. We present a case of a benign pleomorphic adenoma of a minor salivary gland of the cheek, exhibiting perineural involvement. There have been no previously reported cases of minor salivary gland pleomorphic adenomas exhibiting this phenomenon. This is also the first report of this rare feature in surgical literature pertaining to the head and neck region.

  13. Caveolin-1 expression in benign and malignant lesions of the breast

    OpenAIRE

    Kiesel Ludwig; Bürger Horst; Kersting Christian; Liedtke Cornelia; Wülfing Pia

    2007-01-01

    Abstract Background Caveolin-1 is thought to have an important impact on both signal transduction and mediation of intracellular processes. Furthermore, it has been suggested that Caveolin-1 may contribute to certain steps of carcinogenesis in various types of cancer. We examined the potential clinical relevance of Caveolin-1 in normal, benign and malignant breast tissue specimens. Methods Using tissue microarray (TMA) technology cases of invasive breast cancer, DCIS, benign breast disease (i...

  14. Interstitial laser photocoagulation (ILP) of benign cystic thyroid nodules--a prospective randomized trial

    DEFF Research Database (Denmark)

    Døssing, Helle; Bennedbæk, Finn Noe; Hegedüs, Laszlo

    2013-01-01

    Recurrence rate, after aspiration, in cystic thyroid nodules is very high. Interstitial laser photocoagulation (ILP) is a minimally invasive procedure that reduces the need for surgery in patients with a benign solid thyroid nodule.......Recurrence rate, after aspiration, in cystic thyroid nodules is very high. Interstitial laser photocoagulation (ILP) is a minimally invasive procedure that reduces the need for surgery in patients with a benign solid thyroid nodule....

  15. Outcomes and quality of life issues in the pharmacological management of benign prostatic hyperplasia (BPH)

    OpenAIRE

    Cambio, Angelo J; Evans, Christopher P.

    2007-01-01

    Background Benign prostatic hyperplasia (BPH) is a common disease of the aging male population. BPH treatment includes a variety of pharmacological and surgical interventions. The goal of this paper is to review the natural history of BPH, outcomes of pharmacological management, effects on quality of life (QoL), future pharmacotherapies, and associated patient-focused perspectives. Materials and methods Medline searches for the keywords benign prostatic hyperplasia, BPH, alpha blockers, 5 alp...

  16. Methylation Imprinting of H19 and SNRPN Genes in Human Benign Ovarian Teratomas

    OpenAIRE

    Miura, K; Obama, M.; Yun, K.; Masuzaki, H; Ikeda, Y.; Yoshimura, S.; Akashi, T; Niikawa, N; Ishimaru, T; Jinno, Y.

    1999-01-01

    In humans, studies of female germ cells are very limited by ethics. The current study investigated the usefulness of benign ovarian teratomas as a substitute for ova in analyses of imprinted genes. Twenty-five human benign ovarian teratomas were typed with 45 microsatellite DNA markers and classified according to their genotypic features. Two oppositely imprinted genes, H19 and SNRPN, were then chosen for analysis of their methylation states in these tumors. These analyses revealed that benig...

  17. A benign teratoma presenting as an obstruction of the nasal cavity: a case report

    OpenAIRE

    Cukurova Ibrahim; Gumussoy Murat; Yaz Aytekin; Bayol Umit; Yigitbasi Orhan

    2012-01-01

    Abstract Introduction Teratoma refers to a neoplasm that recapitulates all three germ layers. Teratomas may be histologically mature and oncologically benign. Teratomas may also be histologically immature while being oncologically benign, or they may harbor malignant components and have the potential to exhibit an aggressive biological behavior. Teratomas of the head and neck are extremely rare and usually present in the neonatal period. As a general rule, pediatric teratomas of the head and ...

  18. Pathologic observations of the duodenum in 615 consecutive duodenal specimens: I. benign lesions

    OpenAIRE

    Terada, Tadashi

    2012-01-01

    The author investigated histopathology of 615 consecutive duodenal specimens in our pathology laboratory. Computer search of the duodenal lesions was performed. Review of histological slides was done, when appropriate. The duodenal specimens were composed of 567 benign lesions and 48 malignant lesions. The 567 benign lesions were composed of chronic non-specific duodenitis in 334 cases (60.0%), duodenal ulcer in 101 cases (17,8%), heterotopic gastric mucosa in 81 cases (14.3%), hyperplastic p...

  19. Parotid tumor : differentiation of benign vs malignant tumors, based on CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Shin, K. H.; Lee, N. J.; Kim, J. H.; Seol, H. Y.; Chung, K. B.; Suh, W. H. [Anam Hospital, Korea Univ. Medical Center, Seoul (Korea, Republic of)

    1997-03-01

    To determine the CT findings by which between benign and malignant parotid tumors, may be diferntiated. The CT findings of 58 cases of parotid gland tumors confirmed by surgery and histopathology were retrospectively analyzed by two radiologists;there were 42 cases of benign and 16 of malignant tumors. CT findings for differentiation were location, size, density, margin, calcification within tumors, necrosis, cystic change, invasion of extraglandular structure and lymphadenopathy. In benign parotid tumors, the margins of mass were clear in 34 cases (81%), irregular in 3 (7%), and indeterminate in 5 (12%). Necrotic changes were seen in 24 cases (57%) and lymphadenopathy in 1 (2%), but there was no extraglandular invasion. In 38 of 42 benign tumors the CT diagnosis for benignancy was correct. In malignant tumors, the margins were irregular in 11 cases (69%) and clear in 5 cases (31%). Evidence of extraglandular extension was seen in 6 cases (38%) and lymphadenopathy in 2 cases (13%). The CT diagnosis for malignancy was correct in 11 of 16 cases. Irregularities in tumor margin and findings of extraglandular extension are the most helpful indicators by which benign and malignant parotid tumors may be differentiated.

  20. Contribution of diffusion-weighted MR imaging for predicting benignity of complex adnexal masses

    Energy Technology Data Exchange (ETDEWEB)

    Thomassin-Naggara, Isabelle [Hopital Tenon, Assistance Publique Hopitaux de Pariss, Department of Radiology, Paris (France); Universite Rene Descartes, LRI-EA4062, Paris (France); Darai, Emile [Hopital Tenon, Assistance Publique Hopitaux de Pariss, Department of Gynecology-Obstetrics, Paris (France); Cuenod, Charles A.; Fournier, Laure [Universite Rene Descartes, LRI-EA4062, Paris (France); Hopital Europeen Georges Pompidou (HEGP), Assistance Publique Hopitaux de Paris, Department of Radiology, Paris (France); Toussaint, Irwin; Marsault, Claude; Bazot, Marc [Hopital Tenon, Assistance Publique Hopitaux de Pariss, Department of Radiology, Paris (France)

    2009-06-15

    The purpose of this study was to prospectively assess the contribution of diffusion-weighted MR imaging (DWI) for characterizing complex adnexal masses. Seventy-seven women (22-87 years old) with complex adnexal masses (30 benign and 47 malignant) underwent MR imaging including DWI before surgery. Conventional morphological MR imaging criteria were recorded in addition to b{sub 1,000} signal intensity and apparent diffusion coefficient (ADC) measurements of cystic and solid components. Positive likelihood ratios (PLR) were calculated for predicting benignity and malignancy. The most significant criteria for predicting benignity were low b{sub 1,000} signal intensity within the solid component (PLR = 10.9), low T2 signal intensity within the solid component (PLR = 5.7), absence of solid portion (PLR = 3.1), absence of ascites or peritoneal implants (PLR = 2.3) and absence of papillary projections (PLR = 2.3). ADC measurements did not contribute to differentiating benign from malignant adnexal masses. All masses that displayed simultaneously low signal intensity within the solid component on T2-weighted and on b{sub 1,000} diffusion-weighted images were benign. Alternatively, the presence of a solid component with intermediate T2 signal and high b{sub 1,000} signal intensity was associated with a PLR of 4.5 for a malignant adnexal tumour. DWI signal intensity is an accurate tool for predicting benignity of complex adnexal masses. (orig.)

  1. Diagnostic value of CD-10 marker in differentiating of papillary thyroid carcinoma from benign thyroid lesions

    Directory of Open Access Journals (Sweden)

    Mojgan Mokhtari

    2014-01-01

    Full Text Available Background: Using of CD10 in accordance with clinical and histological features of thyroid lesions could be used as both diagnostic and prognostic tool, which consequently influence the management and their prognosis for survival of patients with thyroid neoplasms especially papillary thyroid carcinoma (PTC. The aim of this study was to determine its expression in PTC and different benign thyroid lesions. Materials and Methods: In this descriptive-analytic, cross-sectional study, paraffin-embedded tissues of patients with definitive pathologic diagnosis of different benign thyroid lesions and PTC were retrieved. Immunostained sections of each slides was performed using immunohistochemistry methods and expression of CD10 was compared in two groups of benign thyroid lesions and PTC. Results: From selected cases 134 sections studied in two groups of PTC (n = 67 and benign thyroid lesions (n = 67. CD10 were immunohistochemically positive in 29.9% of PTC cases, but in none of the thyroid benign lesions (0% (P 0.05. Conclusion: The results of the current study indicate that due to the higher expression of CD10 in PTC than benign thyroid lesions it might be used for differentiating mentioned lesions. But for using it as a diagnostic tool further studies with larger sample size and determination of its sensitivity, specificity and cut-off point is necessary.

  2. Contribution of diffusion-weighted MR imaging for predicting benignity of complex adnexal masses

    International Nuclear Information System (INIS)

    The purpose of this study was to prospectively assess the contribution of diffusion-weighted MR imaging (DWI) for characterizing complex adnexal masses. Seventy-seven women (22-87 years old) with complex adnexal masses (30 benign and 47 malignant) underwent MR imaging including DWI before surgery. Conventional morphological MR imaging criteria were recorded in addition to b1,000 signal intensity and apparent diffusion coefficient (ADC) measurements of cystic and solid components. Positive likelihood ratios (PLR) were calculated for predicting benignity and malignancy. The most significant criteria for predicting benignity were low b1,000 signal intensity within the solid component (PLR = 10.9), low T2 signal intensity within the solid component (PLR = 5.7), absence of solid portion (PLR = 3.1), absence of ascites or peritoneal implants (PLR = 2.3) and absence of papillary projections (PLR = 2.3). ADC measurements did not contribute to differentiating benign from malignant adnexal masses. All masses that displayed simultaneously low signal intensity within the solid component on T2-weighted and on b1,000 diffusion-weighted images were benign. Alternatively, the presence of a solid component with intermediate T2 signal and high b1,000 signal intensity was associated with a PLR of 4.5 for a malignant adnexal tumour. DWI signal intensity is an accurate tool for predicting benignity of complex adnexal masses. (orig.)

  3. Value of thyroid nodule ultrasonic strain elastography quantitative analysis in judging benignancy or malignancy of nodules

    Institute of Scientific and Technical Information of China (English)

    Hai-Yun Zhao; Hai-Xia Liu; Wei Tong; Jin-Zhong Huang; Chun Xiang

    2016-01-01

    Objective:To analyze the value of thyroid nodule ultrasonic strain elastography quantitative analysis in judging benignancy or malignancy of nodules.Methods: Patients diagnosed with thyroid nodule and receiving ultrasonic strain elastography quantitative analysis in our hospital were selected for study and divided into benign group and malignant group according to fine needle biopsy or the pathological results after surgical resection; mean strain values of quantitative indicators, blue region area and disorder of ultrasonic strain elastography, expression levels of malignant biological molecules in nodule tissue as well as the contents of serum tumor markers were detected.Results:Mean strain value of malignant group was lower than that of benign group, blue region area and disorder were higher than those of benign group, and standard deviation, complexity, kurtosis, skewness, contrast, equality, consistency and correlation were without significant differences; mRNA contents ofFascin-1, S100A4, STAT3, TC-1, MUC1 andMUC15 in thyroid nodules as well as serum Midkine, Galectin-3, CEACAM1 and TFF3 contents of malignant group were significantly higher than those of benign group, negatively correlated with mean strain value and positively correlated with blue region area and disorder.Conclusions:Mean strain values of quantitative indicators, blue region area and disorder of thyroid nodule ultrasonic strain elastography can judge benign or malignant nodules and assess the malignant degree.

  4. Metabolic Profiling of Human Benign and Malignant Pulmonary Nodules Using Mass Spectrometry-Based Metabolomics

    Directory of Open Access Journals (Sweden)

    Choon Nam Ong

    2013-07-01

    Full Text Available Solitary pulmonary nodule (SPN or coin lesion is a mass in the lung and can be commonly found in chest X-rays or computerized tomography (CT scans. However, despite the advancement of imaging technologies, it is still difficult to distinguish malignant cancer from benign SPNs. Here we investigated the metabolic profiling of patients with benign and malignant pulmonary nodules. A combination of gas chromatography/mass spectrometry (GC/MS and liquid chromatography/mass spectrometry (LC/MS was used to profile the plasma metabolites in 17 patients with malignant SPNs, 15 patients with benign SPNs and 20 healthy controls. The metabolic profiles were assayed using OPLS-DA, and further analyzed to identify marker metabolites related to diseases. Both GC/MS- and LC/MS-derived models showed clear discriminations in metabolic profiles among three groups. It was found that 63 metabolites (12 from GC/MS, 51 from LC/MS contributed to the differences. Of these, 48 metabolites showed same change trend in both malignant and benign SPNs as compared with healthy controls, indicating some common pathways including inflammation and oxidative injury shared by two diseases. In contrast, 14 metabolites constituted distinct profiles that differentiated malignant from benign SPNs, which might be a unique biochemical feature associated with lung cancer. Overall, our data suggested that integration of two highly sensitive and complementary metabolomics platforms could enable a comprehensive metabolic profiling and assist in discrimination malignant from benign SPNs.

  5. Diagnostic value of maspin in distinguishing adenocarcinoma from benign biliary epithelium on endoscopic bile duct biopsy.

    Science.gov (United States)

    Chen, Lihong; Huang, Kevin; Himmelfarb, Eric A; Zhai, Jing; Lai, Jin-Ping; Lin, Fan; Wang, Hanlin L

    2015-11-01

    Histopathologic distinction between benign and malignant epithelia on endoscopic bile duct biopsy can be extremely challenging due to small sample size, crush artifact, and a propensity for marked inflammatory and reactive changes after stent placement. Our previous studies have shown that the insulin-like growth factor II mRNA-binding protein 3, S100P, and the von Hippel-Lindau gene product (pVHL) can help the distinction. This study analyzed 134 endoscopic bile duct biopsy specimens (adenocarcinoma 45, atypical 31, and benign 58) by immunohistochemistry for the expression of maspin, a serine protease inhibitor. The results demonstrated that (1) maspin expression was more frequently detected in malignant than in benign biopsies; (2) malignant biopsies frequently showed diffuse, strong/intermediate, and combined nuclear/cytoplasmic staining patterns for maspin, which were much less commonly seen in benign biopsies; (3) the malignant staining patterns for maspin observed in atypical biopsies were consistent with follow-up data showing that 67% of these patients were subsequently diagnosed with adenocarcinoma; (4) a maspin+/S100P+/pVHL- staining profile was seen in 75% of malignant biopsies but in none of the benign cases. These observations demonstrate that maspin is a useful addition to the diagnostic immunohistochemical panel (S100P, pVHL, and insulin-like growth factor II mRNA-binding protein 3) to help distinguish malignant from benign epithelia on challenging bile duct biopsies. PMID:26362203

  6. Scalable and Environmentally Benign Process for Smart Textile Nanofinishing.

    Science.gov (United States)

    Feng, Jicheng; Hontañón, Esther; Blanes, Maria; Meyer, Jörg; Guo, Xiaoai; Santos, Laura; Paltrinieri, Laura; Ramlawi, Nabil; Smet, Louis C P M de; Nirschl, Hermann; Kruis, Frank Einar; Schmidt-Ott, Andreas; Biskos, George

    2016-06-15

    A major challenge in nanotechnology is that of determining how to introduce green and sustainable principles when assembling individual nanoscale elements to create working devices. For instance, textile nanofinishing is restricted by the many constraints of traditional pad-dry-cure processes, such as the use of costly chemical precursors to produce nanoparticles (NPs), the high liquid and energy consumption, the production of harmful liquid wastes, and multistep batch operations. By integrating low-cost, scalable, and environmentally benign aerosol processes of the type proposed here into textile nanofinishing, these constraints can be circumvented while leading to a new class of fabrics. The proposed one-step textile nanofinishing process relies on the diffusional deposition of aerosol NPs onto textile fibers. As proof of this concept, we deposit Ag NPs onto a range of textiles and assess their antimicrobial properties for two strains of bacteria (i.e., Staphylococcus aureus and Klebsiella pneumoniae). The measurements show that the logarithmic reduction in bacterial count can get as high as ca. 5.5 (corresponding to a reduction efficiency of 99.96%) when the Ag loading is 1 order of magnitude less (10 ppm; i.e., 10 mg Ag NPs per kg of textile) than that of textiles treated by traditional wet-routes. The antimicrobial activity does not increase in proportion to the Ag content above 10 ppm as a consequence of a "saturation" effect. Such low NP loadings on antimicrobial textiles minimizes the risk to human health (during textile use) and to the ecosystem (after textile disposal), as well as it reduces potential changes in color and texture of the resulting textile products. After three washes, the release of Ag is in the order of 1 wt %, which is comparable to textiles nanofinished with wet routes using binders. Interestingly, the washed textiles exhibit almost no reduction in antimicrobial activity, much as those of as-deposited samples. Considering that a realm

  7. Scalable and Environmentally Benign Process for Smart Textile Nanofinishing.

    Science.gov (United States)

    Feng, Jicheng; Hontañón, Esther; Blanes, Maria; Meyer, Jörg; Guo, Xiaoai; Santos, Laura; Paltrinieri, Laura; Ramlawi, Nabil; Smet, Louis C P M de; Nirschl, Hermann; Kruis, Frank Einar; Schmidt-Ott, Andreas; Biskos, George

    2016-06-15

    A major challenge in nanotechnology is that of determining how to introduce green and sustainable principles when assembling individual nanoscale elements to create working devices. For instance, textile nanofinishing is restricted by the many constraints of traditional pad-dry-cure processes, such as the use of costly chemical precursors to produce nanoparticles (NPs), the high liquid and energy consumption, the production of harmful liquid wastes, and multistep batch operations. By integrating low-cost, scalable, and environmentally benign aerosol processes of the type proposed here into textile nanofinishing, these constraints can be circumvented while leading to a new class of fabrics. The proposed one-step textile nanofinishing process relies on the diffusional deposition of aerosol NPs onto textile fibers. As proof of this concept, we deposit Ag NPs onto a range of textiles and assess their antimicrobial properties for two strains of bacteria (i.e., Staphylococcus aureus and Klebsiella pneumoniae). The measurements show that the logarithmic reduction in bacterial count can get as high as ca. 5.5 (corresponding to a reduction efficiency of 99.96%) when the Ag loading is 1 order of magnitude less (10 ppm; i.e., 10 mg Ag NPs per kg of textile) than that of textiles treated by traditional wet-routes. The antimicrobial activity does not increase in proportion to the Ag content above 10 ppm as a consequence of a "saturation" effect. Such low NP loadings on antimicrobial textiles minimizes the risk to human health (during textile use) and to the ecosystem (after textile disposal), as well as it reduces potential changes in color and texture of the resulting textile products. After three washes, the release of Ag is in the order of 1 wt %, which is comparable to textiles nanofinished with wet routes using binders. Interestingly, the washed textiles exhibit almost no reduction in antimicrobial activity, much as those of as-deposited samples. Considering that a realm

  8. Estimated costs of treatment of benign prostate hyperplasia in Brazil

    Directory of Open Access Journals (Sweden)

    Haylton J. Suaid

    2003-06-01

    Full Text Available INTRODUCTION: The treatment of benign prostate hyperplasia (BPH presents 2 options: medical or surgical, and there are doubts about what is the best treatment since 80% of patients who undergo surgery become asymptomatic and 10 to 40% of those under medical regimen undergo surgery within a 5 years period. It is difficult to assess the actual costs of treating BPH in Brazil due to several factors, among them regional particularities and the scarcity of current statistical data. PATIENTS AND METHODS: Recently, in the Ribeirão Preto area, São Paulo, Brazil, the IPSS (International Prostatic Symptoms Score and quality of life were verified in 934 volunteers. It was determined the percentage of individuals with ages ranging from 40 to 79 years with moderate symptoms (score 8-19 and with severe symptoms (score 20-35, values for which are indicated medical and surgical treatment, respectively, according to the Brazilian Society of Urology consensus on BPH. Data on Brazilian population in that age range were obtained from the Brazilian Institute of Geography and Statistics referent to the year of 2000. It was determined the number of patients, according to the criteria above, subjected to either one of the treatments mentioned. Surgical costs of prostate transurethral resection were researched according to Unified Health System - SUS tables (US$ 173 and of Brazilian Medical Society - AMB with a mean cost in 3 hospitals of US$ 933. Drug costs were calculated by the annual mean price (US$ 355 of 4 alpha-blockers (tamsulosin, alfuzosin, doxazosin and terazosin. RESULTS: The estimated population for medical treatment was 5,397,321 individuals, with a cost corresponding to US$ 1,916,489,055.00. The estimated population for surgical treatment was 2,040,299 men, what would represent a cost of US$ 353,291,204.00 based on the SUS table and of US$ 1,904,279,066.00 based on AMB with hospital expenses included. CONCLUSION: All theses facts induce us to predict

  9. Improved Methods for Production Manufacturing Processes in Environmentally Benign Manufacturing

    Directory of Open Access Journals (Sweden)

    Yan-Yan Wang

    2011-09-01

    Full Text Available How to design a production process with low carbon emissions and low environmental impact as well as high manufacturing performance is a key factor in the success of low-carbon production. It is important to address concerns about climate change for the large carbon emission source manufacturing industries because of their high energy consumption and environmental impact during the manufacturing stage of the production life cycle. In this paper, methodology for determining a production process is developed. This methodology integrates process determination from three different levels: new production processing, selected production processing and batch production processing. This approach is taken within a manufacturing enterprise based on prior research. The methodology is aimed at providing decision support for implementing Environmentally Benign Manufacturing (EBM and low-carbon production to improve the environmental performance of the manufacturing industry. At the first level, a decision-making model for new production processes based on the Genetic Simulated Annealing Algorithm (GSAA is presented. The decision-making model considers not only the traditional factors, such as time, quality and cost, but also energy and resource consumption and environmental impact, which are different from the traditional methods. At the second level, a methodology is developed based on an IPO (Input-Process-Output model that integrates assessments of resource consumption and environmental impact in terms of a materials balance principle for batch production processes. At the third level, based on the above two levels, a method for determining production processes that focus on low-carbon production is developed based on case-based reasoning, expert systems and feature technology for designing the process flow of a new component. Through the above three levels, a method for determining the production process to identify, quantify, assess, and optimize the

  10. Dosimetry prior to I-131-therapy of benign thyroid disease

    International Nuclear Information System (INIS)

    The activity to be administered in I-131 therapy of benign thyroid disease is determined by the radiation absorbed dose necessary to cure the disease, the target mass, and the residence time of the I-131 in the target volume. Data from 73 patients with complete sets of uptake measurements 2, 6, 24, 48, and 96 (n = 53) or 120 (n = 20) hours after oral administration of 1 MBq I-131 were used to deduce residence times from subsets of 3, 2, or only 1 measurement for each individual. The values were compared to those obtained with the reference method, i.e. a fit of an uptake function based on a 2-compartment model to all 5 measurements, to quantify the errors introduced by the less demanding assessments. Deviations are less than 10% if the 2- compartment uptake function is fitted to only 3 values measured after 6, 24, and 96-120 h. Use of 2, 24, and 96-120 h data results in errors > 20% in individual patients. The effective half-lives as determined from 2 measurements after 24 and 96-120 h correlate well with those deduced from the reference method with larger deviations in individuals with slow iodine kinetics and late maximal uptake. Residence times determined from the 24 h uptake, assuming linear increase during the first day, and the effective half-life limited to maximum 8 days underestimate the actual values systematically in patients with long and short half-lives. These errors can be eliminated by a modification of the calculation method resulting in deviations less than 14% in all but one individual for this procedure. The accuracy of methods based on only one retention value increases with the time of measurement after the administration of I-131. While systematic errors up to a factor of two occur if the 24 h uptake is used for the estimate, deviations are less than 18% for measurements after 120 h. The results suggest that only one late uptake assessment warrants residence time estimates with an acceptable error. Given the high inherent uncertainties in the

  11. Clinical characteristics of patients with benign nonlesional temporal lobe epilepsy

    Directory of Open Access Journals (Sweden)

    Kim J

    2016-07-01

    studies with a much larger population are warranted. Keywords: epilepsy, benign temporal lobe epilepsy, nonlesional temporal lobe epilepsy

  12. Transition to non-toxic gunshot use in Olympic shooting: policy implications for IOC and UNEP in resolving an environmental problem.

    Science.gov (United States)

    Thomas, Vernon George; Guitart, Raimon

    2013-10-01

    Olympic shooters discharge, annually, thousands of tons of lead shot which pose toxic risks to animals and may pollute both surface and ground waters. Non-toxic steel shot is an acceptable and effective substitute, but International Shooting Sports Federation (ISSF) rules prevent its adoption. The present policy and rules of the ISSF on lead shot use contravene the International Olympic Committee (IOC) Charter position on environmental protection. The United Nations Environment Programme (UNEP), a formal Olympic partner on environmental protection, has no stated policy on contamination from lead ammunition, despite having declared lead a Priority Area for remedial action, and is pressing to remove lead from the global human environment. The IOC Sport and Environment Commission and UNEP could examine the continued use of lead shot ammunition and advise the IOC Executive Board on appropriate changes in policy and rules that could halt the massive lead shot contamination of shooting range environments world-wide. PMID:23529514

  13. Preparation of Non-Toxic Adhesive Using Waste Polystyrene Plastic Foam%废聚苯乙烯泡沫塑料制备无毒胶粘剂

    Institute of Scientific and Technical Information of China (English)

    叶先运

    2001-01-01

    This paper presents the preparation technology of non-toxic adhesive from waste polystyrene plastic foam by using a well-selected organic solvent and industrial oil.The compressive shearing strength(wood to wood) of the adhesive is 2.2 MPa.The process is simple and realiable without any further polution,and it can be easily popularized.%用无毒或低毒有机溶剂与工业油料,结合一定工艺将废聚苯乙烯泡沫塑料制成无毒胶粘剂,胶粘剂的压缩剪切强度(木材与木材)达2.2MPa,且工艺简单,稳定可靠,不产生二次污染,便于推广应用。

  14. Nontoxic, Inexpensive, Ammonium Chloride-Mediated (In Water) Synthesis of Some Novel 1,5-benzothiazepine Derivatives and Their Antimicrobial Activity

    International Nuclear Information System (INIS)

    In the present study, a new, nontoxic, easy and inexpensive method for the synthesis of 1,5-benzothiazepine derivatives was described and a mechanism for this reactions was proposed. Ammonium chloride which is inexpensive and readily available reagent catalyzes the thia-michael addition reaction of thiols in water efficiently. 1,5-benzothiazepines derivatives were synthesized by the condensation reactions of o-aminothiophenol (o-ATP) with chalcone derivatives by using saturated solution of NH/sub 4/Cl in water. The products were characterized by the elemental analysis, NMR and FT-IR techniques. Synthesized compounds were tested for antimicrobial activity against. Staphylococcus aureus ATCC 6538, Escherichia coli ATCC 25922, Bacillus subtilis IMG22 and Candida albicans ATCC 10231. Among the synthesized compounds 2b was found to be most active derivative against Escherichia coli ATCC 25922 and Candida albicans ATCC 10231. The other compounds didn't exhibit any activity against the other test microorganisms. (author)

  15. Cu2ZnSnS4 (CZTS) nanoparticle based nontoxic and earth-abundant hybrid pn-junction solar cells.

    Science.gov (United States)

    Saha, Sudip K; Guchhait, Asim; Pal, Amlan J

    2012-06-14

    A heterojunction between a layer of CZTS nanoparticles and a layer of fullerene derivatives forms a pn-junction. We have used such an inorganic-organic hybrid pn-junction device for solar cell applications. As routes to optimize device performance, interdot separation has been reduced by replacing long-chain ligands of the quantum dots with short-chain ligands and thickness of the CZTS layer has been varied. We have shown that the CZTS-fullerene interface could dissociate photogenerated excitons due to the depletion region formed at the pn-junction. From capacitance-voltage characteristics, we have determined the width of the depletion region, and compared it with the parameters of devices based on the components of the heterojunction. The results demonstrate solar cell applications based on nontoxic and earth-abundant materials. PMID:22539133

  16. The development of non-toxic ionic-crosslinked chitosan-based microspheres as carriers for the controlled release of silk sericin.

    Science.gov (United States)

    Aramwit, Pornanong; Ekasit, Sanong; Yamdech, Rungnapha

    2015-10-01

    Silk sericin is recently shown to possess various biological activities for biomedical applications. While various sericin carriers were developed for drug delivery system, very few researches considered sericin as a bioactive molecule itself. In this study, sericin incorporated in the chitosan-based microspheres was introduced as a bioactive molecule and bioactive carrier at the same time. The chitosan/sericin (CH/SS) microspheres at different composition (80/20, 70/30, 60/40, and 50/50) were successfully fabricated using anhydroustri-polyphosphate (TPP) as a polyanionic crosslinker. The microspheres with an average size of 1-4 μm and narrow size distribution were obtained. From FT-IR spectra, the presence of both chitosan and sericin in the microspheres confirmed the occurrence of ionic interaction that crosslink them within the microspheres. We also found that the CH/SS microspheres prepared at 50/50 could encapsulate sericin at the highest percentage (37.28%) and release sericin in the most sustained behavior, possibly due to the strong ionic interaction of the positively charged chitosan and the negatively charged sericin. On the other hand, the composition of CH/SS had no effect on the degradation rate of microspheres. All microspheres continuously degraded and remained around 20% after 14 days of enzymatic degradation. This explained that the ionic crosslinkings between chitosan and sericin could be demolished by the enzyme and hydrolysis. Furthermore, we have verified that all CH/SS microspheres at any concentrations showed non-toxicity to L929 mouse fibroblast cells. Therefore, we suggested that the non-toxic ionic-crosslinked CH/SS microspheres could be incorporated in wound dressing material to achieve the sustained release of sericin for accelerated wound healing. PMID:26233725

  17. The potentiation effect makes the difference: Non-toxic concentrations of ZnO nanoparticles enhance Cu nanoparticle toxicity in vitro

    Energy Technology Data Exchange (ETDEWEB)

    Li, Lingxiangyu [State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 (China); Fernández-Cruz, María Luisa; Connolly, Mona [Departamento de Medio Ambiente, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Madrid 28040 (Spain); Conde, Estefanía; Fernández, Marta [Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid 28040 (Spain); Schuster, Michael [Department of Chemistry, Technische Universität München, Garching 85747 (Germany); Navas, José María, E-mail: jmnavas@inia.es [Departamento de Medio Ambiente, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Madrid 28040 (Spain)

    2015-02-01

    Here we examined whether the addition of a non-toxic concentration (6.25 μg/mL) of zinc oxide nanoparticles (ZnONPs: 19, 35 and 57 nm, respectively) modulates the cytotoxicity of copper nanoparticles (CuNPs, 63 nm in size) in the human hepatoma cell line HepG2. The cytotoxic effect of CuNPs on HepG2 cells was markedly enhanced by the ZnONPs, the largest ZnONPs causing the highest increase in toxicity. However, CuNPs cytotoxicity was not affected by co-incubation with medium containing only zinc ions, indicating the increase in toxicity might be attributed to the particle form of ZnONPs. Transmission electron microscopy (TEM) revealed the presence of CuNPs and ZnONPs inside the cells co-exposed to both types of NP and outflow of cytoplasm through the damaged cell membrane. Inductively coupled plasma mass spectrometry (ICP-MS) determined an increase in the concentration of zinc and a decrease in that of copper in co-exposed cells. On the basis of these results, we propose that accumulation of large numbers of ZnONPs in the cells alters cellular membranes and the cytotoxicity of CuNPs is increased. - Highlights: • ZnONPs at non-toxic concentrations increased the toxicity of CuNPs in vitro. • ZnONPs of larger size provoked a stronger synergistic effect with CuNPs. • The synergistic effect was attributed to the particle fraction of ZnONPs.

  18. Induction and transfer of resistance to poisoning by Amorimia pubiflora in sheep whith non-toxic dosis of the plant and ruminal content

    Directory of Open Access Journals (Sweden)

    Marciel Becker

    2016-04-01

    Full Text Available ABSTRACT: Amorimiapubiflora (Malpighiaceae, which contains sodium monofluoroacetate (MFA is the main cause of "sudden death" in cattle in the Brazilian state of Mato Grosso. This research investigated the induction of resistance to the poisoning in sheep by the continuous administration of non-toxic doses of the plant and also the possibility to transfer this resistance to other sheep by the transfaunation of ruminal fluid. For this a group of four sheep (G1 received daily doses of 0.5g kg-1 for 20 days and after an interval of 15 days were challenged with three daily doses of 1g kg-1 for 3 days. Also the transfer of resistance to A. pubiflora poisoning was evaluated by transfaunation of rumen fluid (100ml for 10 days from G1 sheep to five sheep (G2, followed by challenge with the dose of 1g kg-1 for 3 days (G2D2 and after a three-day interval they received a single dose of 3g kg-1 (G2D3. The degree of resistance was evaluated by monitoring the onset of clinical signs, heart rate, and outcome of the poisoning compared with the control groups, which were challenged with three daily doses of 1g kg1 (G3 and with a single dose of 3g kg-1 (G4. Clinical parameters evaluated in Groups G1 and G2 were significantly less pronounced than those observed in G3 and G4 (control (P<0.05. Sheep in G4 (control died after receiving a single dose of 3g kg-1, while those in G2 (transfaunated survived. These findings demonstrated that consumption of non-toxic doses of A. pubiflora induced resistance in sheep and that this resistance can be transferred by transfaunation. New experiments are needed to determine the most efficient ways to induce resistance and to use this technique in the field to prevent the poisoning.

  19. Nontoxic concentration of DNA-PK inhibitor NU7441 radio-sensitizes lung tumor cells with little effect on double strand break repair.

    Science.gov (United States)

    Sunada, Shigeaki; Kanai, Hideki; Lee, Younghyun; Yasuda, Takeshi; Hirakawa, Hirokazu; Liu, Cuihua; Fujimori, Akira; Uesaka, Mitsuru; Okayasu, Ryuichi

    2016-09-01

    High-linear energy transfer (LET) heavy ions have been increasingly employed as a useful alternative to conventional photon radiotherapy. As recent studies suggested that high LET radiation mainly affects the nonhomologous end-joining (NHEJ) pathway of DNA double strand break (DSB) repair, we further investigated this concept by evaluating the combined effect of an NHEJ inhibitor (NU7441) at a non-toxic concentration and carbon ions. NU7441-treated non-small cell lung cancer (NSCLC) A549 and H1299 cells were irradiated with X-rays and carbon ions (290 MeV/n, 50 keV/μm). Cell survival was measured by clonogenic assay. DNA DSB repair, cell cycle distribution, DNA fragmentation and cellular senescence induction were studied using a flow cytometer. Senescence-associated protein p21 was detected by western blotting. In the present study, 0.3 μM of NU7441, nontoxic to both normal and tumor cells, caused a significant radio-sensitization in tumor cells exposed to X-rays and carbon ions. This concentration did not seem to cause inhibition of DNA DSB repair but induced a significant G2/M arrest, which was particularly emphasized in p53-null H1299 cells treated with NU7441 and carbon ions. In addition, the combined treatment induced more DNA fragmentation and a higher degree of senescence in H1299 cells than in A549 cells, indicating that DNA-PK inhibitor contributes to various modes of cell death in a p53-dependent manner. In summary, NSCLC cells irradiated with carbon ions were radio-sensitized by a low concentration of DNA-PK inhibitor NU7441 through a strong G2/M cell cycle arrest. Our findings may contribute to further effective radiotherapy using heavy ions. PMID:27341700

  20. Nostocyclopeptide-M1: a potent, nontoxic inhibitor of the hepatocyte drug transporters OATP1B3 and OATP1B1.

    Science.gov (United States)

    Herfindal, Lars; Myhren, Lene; Kleppe, Rune; Krakstad, Camilla; Selheim, Frode; Jokela, Jouni; Sivonen, Kaarina; Døskeland, Stein O

    2011-04-01

    We have isolated a novel cyanobacterial cyclic peptide (nostocyclopeptide M1; Ncp-M1) that blocks the hepatotoxic action of microcystin (MC) and nodularin (Nod). We show here that Ncp-M1 is nontoxic to primary hepatocytes in long-term culture. Ncp-M1 does not affect any known intracellular targets or pathways involved in MC action, like protein phosphatases, CaM-KII, or ROS-dependent cell death effectors. In support of this conclusion Ncp-M1 had no protective effect when microinjected into cells. Rather, the antitoxin effect was solely due to blocked hepatocyte uptake of MC and Nod. The hepatic uptake of MC and Nod is mainly via the closely related organic anion transporters OATP1B1 and OATP1B3, which also mediate hepatic transport of endogenous metabolites and hormones as well as drugs. OATP1B3 is also expressed in some aggressive cancers, where it confers apoptosis resistance. We show that Ncp-M1 inhibits transport through OATP1B3 and OATP1B1 expressed in HEK293 cells. The Ncp-M1 molecule has several nonproteinogenic amino acids and an imino bond, which hamper its synthesis. Moreover, a cyclic all L-amino acid heptapeptide analogue of Ncp-M1 also inhibits the OATP1B1/1B3 transporters, and with higher OATP1B3 preference than Ncp-M1 itself. The nontoxic Ncp-M1 and its synthetic cyclic peptide analogues thus provide new tools to probe the role of OATB1B1/1B3 mediated drug and metabolite transport in liver and cancer cells. They can also serve as scaffolds to design new, exopeptidase resistant OATP1B3-specific modulators.

  1. Facile promoter deletion in Escherichia coli in response to leaky expression of very robust and benign proteins from common expression vectors

    Directory of Open Access Journals (Sweden)

    Kawe Martin

    2009-01-01

    Full Text Available Abstract Background Overexpression of proteins in Escherichia coli is considered routine today, at least when the protein is soluble and not otherwise toxic for the host. We report here that the massive overproduction of even such "benign" proteins can cause surprisingly efficient promoter deletions in the expression plasmid, leading to the growth of only non-producers, when expression is not well repressed in the newly transformed bacterial cell. Because deletion is so facile, it might impact on high-throughput protein production, e.g. for structural genomics, where not every expression parameter will be monitored. Results We studied the high-level expression of several robust non-toxic proteins using a T5 promoter under lac operator control. Full induction leads to no significant growth retardation. We compared expression from almost identical plasmids with or without the lacI gene together in strains expressing different levels of LacI. Any combination without net overexpression of LacI led to an efficient promoter deletion in the plasmid, although the number of growing colonies and even the plasmid size – all antibiotic-resistant non-producers – was almost normal, and thus the problem not immediately recognizable. However, by assuring sufficient repression during the initial establishment phase of the plasmid, deletion was completely prevented. Conclusion The deletions in the insufficiently repressed system are caused entirely by the burden of high-level translation. Since the E. coli Dps protein, known to protect DNA against stress in the stationary phase, is accumulated in the deletion mutants, the mutation may have taken place during a transient stationary phase. The cause of the deletion is thus distinct from the well known interference of high-level transcription with plasmid replication. The deletion can be entirely prevented by overexpressing LacI, a useful precaution even without any signs of stress caused by the protein.

  2. {sup 18}F-PET imaging: frequency, distribution and appearance of benign lesions; Die Positronenemissionstomographie des Skelettsystems mit {sup 18}FNa: Haeufigkeit, Befundmuster und Verteilung benigner Veraenderungen

    Energy Technology Data Exchange (ETDEWEB)

    Schirrmeister, H.; Kotzerke, J.; Rentschler, M.; Traeger, H.; Fenchel, S.; Diederichs, C.G.; Reske, S.N. [Ulm Univ. (Germany). Abt. Nuklearmedizin; Nuessle, K. [Ulm Univ. (Germany). Abt. fuer Roentgendiagnostik

    1998-09-01

    Purpose: We evaluated the frequency, distribution and appearance of benign lesions in {sup 18}F-PET scans. Methods: Between March 1996 and May 1997, {sup 18}F-PET scans were performed in 59 patients in addition to conventional planar bone scintigraphy. Eleven patients were subjected to additional SPECT imaging. The main indication was searching for bone metastases (58 pat.). The diagnosis was confirmed radiologically. Results: With {sup 18}F-PET in 39 patients (66,1%) 152 benign lesions, mostly located in the spine were detected. {sup 99m}Tc bone scans revealed 45 lesions in 10 patients. Osteoarthritis of the intervertebral articulations (69%) or of the acromioclavicular joint (15%) were the most common reasons for degenerative lesions detected with {sup 18}F-PET. Osteophytes appeared as hot lesions located at two adjacent vertebral endplates. Osteoarthritis of the intervertebral articulations showed an enhanced tracer uptake at these localizations, whereas endplate fractures of the vertebral bodies appeared very typically; solitary fractures of the ribs could not be differentiated from metastases. Rare benign lesions were not studied. Conclusion: Most of the degenerative lesions (84%) detected with {sup 18}F-PET had a very typical appearance and could be detected with the improved spatial resolution and advantages of a tomographic technique. {sup 18}F-PET had an increased accuracy in detecting degenerative bone lesions. (orig.) [Deutsch] Ziel: Wir untersuchten Haeufigkeit und Befundmuster benigner Skelettveraenderungen mit {sup 18}F-PET. Material und Methoden: Zwischen 3/96 und 5/97 untersuchten wir 59 Patienten mit {sup 18}F-PET zusaetzlich zur planaren, bei 11 Patienten durch SPECT ergaenzten konventionellen Skelettszintigraphie (KS). Hauptindikation war die Metastasensuche (58 Pat.). Die Befundkontrolle erfolgte radiologisch. Ergebnisse: {sup 18}F-PET zeigte bei 39 Patienten (66,1%) 152 meist in der Wirbelsaeule lokalisierte, benigne Mehranreicherungen. Mit der

  3. Differentiation of benign and malignant ulcers of the stomach on computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Seo, Im Jeong; Kim, Suk; Lee, Jun Woo; Jeong, Yeon Joo; Choo, Ki Seok; Lee, Suk Hong; Kim, Gwang Ha; Kim, Tae Oh; Jo, Hong Jae [Pusan National University College of Medicine, Busan (Korea, Republic of)

    2006-10-15

    We wanted to determine the multidetector computed tomography (MDCT) findings for differentiating benign ulcers from malignant ones. 18 clinicopathologically proven benign ulcers that had been detected by both endoscopy and MDCT were the focus of this study. 26 ulcerative advanced gastric cancers and 26 early gastric cancers with ulceration, all of which had been surgically proven, were selected as a control group. Five of the 26 early gastric cancers that were confined to the mucosa and that were not detected on CT were excluded in this study. The following CT findings were reviewed by two radiologists; ulcer size, the degree of enhancement and the thickness of inner enhancing layer in the ulcer base, the total thickness and the enhancing inner layer thickness in the largest part of the thickened ulcer mound, the presence of ulcer that projected beyond the healthy lumen, and the presence of perigastric fat infiltration and perigastric lymphadenopathy. An indiscernible thin-walled ulcer base (less than 1.5 mm) and suboptimal enhancement of the ulcer base for the discrimination of benign gastric ulcers from the malignant gastric ulcers showed sensitivities of 100% (18/18) and 78% (14/18), respectively, with specificities of 98% (46/47) and 92% (43/47), respectively. Ulcer projection was more significantly present in benign ulcer (13/18, 72%) than in the malignant gastric ulcers (7/47, 15%). The enhancing inner layer thickness in the ulcer mound was significantly greater in the AGC (mean; 7.4 mm) than in the benign gastric ulcers (mean, 2.2 mm). There were insignificant differences for ulcer size, total thickness of the ulcer mound, the perigastric fat infiltration and perigastric lymphadenopathy between the benign and malignant gastric ulcers. MDCT is an additional helpful diagnostic tool when benign gastric ulcers are histologically difficult to distinguish from malignant gastric ones.

  4. Differentiating benign from malignant bone tumors using fluid-fluid level features on magnetic resonance imaging

    Energy Technology Data Exchange (ETDEWEB)

    Yu, Hong; Cui, Jian Ling; Cui, Sheng Jie; Sun, Ying Cal; Cui, Feng Zhen [Dept. of Radiology, The Third Hospital of Hebei Medical University, Hebei Province Biomechanical Key Laborary of Orthopedics, Shijiazhuang, Hebei (China)

    2014-12-15

    To analyze different fluid-fluid level features between benign and malignant bone tumors on magnetic resonance imaging (MRI). This study was approved by the hospital ethics committee. We retrospectively analyzed 47 patients diagnosed with benign (n = 29) or malignant (n = 18) bone tumors demonstrated by biopsy/surgical resection and who showed the intratumoral fluid-fluid level on pre-surgical MRI. The maximum length of the largest fluid-fluid level and the ratio of the maximum length of the largest fluid-fluid level to the maximum length of a bone tumor in the sagittal plane were investigated for use in distinguishing benign from malignant tumors using the Mann-Whitney U-test and a receiver operating characteristic (ROC) analysis. Fluid-fluid level was categorized by quantity (multiple vs. single fluid-fluid level) and by T1-weighted image signal pattern (high/low, low/high, and undifferentiated), and the findings were compared between the benign and malignant groups using the chi2 test. The ratio of the maximum length of the largest fluid-fluid level to the maximum length of bone tumors in the sagittal plane that allowed statistically significant differentiation between benign and malignant bone tumors had an area under the ROC curve of 0.758 (95% confidence interval, 0.616-0.899). A cutoff value of 41.5% (higher value suggests a benign tumor) had sensitivity of 73% and specificity of 83%. The ratio of the maximum length of the largest fluid-fluid level to the maximum length of a bone tumor in the sagittal plane may be useful to differentiate benign from malignant bone tumors.

  5. E-cadherin and calretinin as immunocytochemical markers to differentiate malignant from benign serous effusions

    Institute of Scientific and Technical Information of China (English)

    Dong-Nan He; Hua-Sheng Zhu; Kun-He Zhang; Wen-Jian Jin; Wei-Ming Zhu; Ning Li; Jie-Shou Li

    2004-01-01

    AIM: To investigate the expressions of E-cadherin and calretinin in exfoliated cells of serous effusions and evaluate their values in distinguishing malignant effusions from benign ones.METHODS: Fresh serous effusion specimens werecentrifuged and exfoliated cells were collected. Cells were then processed with a standardized procedure, including paraformaldehyde fixation, BSA-PBS solution washing and smears preparation. E-cadherin and calretinin were detected by immunocytochemistry (ICC).RESULTS: In the exfoliated cells of serous effusions, most of carcinoma cells only expressed E-cadherin, and most of mesothelial cells only expressed calretinin, and benign cells (lymphocytes and granulocytes) did not express either of them. For E-cadherin, 85.7% (30/35) of malignant effusions and 8.1% (3/37) of benign fluids were ICC-positive (P<0.001).The sensitivity of E-cadherin ICC in the diagnosis of malignant effusions was 85.7%, specificity 91.9%, and diagnostic rate 88.9%. For calretinin, 94.6% (35/37) of benign effusions and 11.4% (4/35) of malignant effusions were ICC-positive (P<0.001). The sensitivity of calretinin ICC in the diagnosis of benign effusions was 94.6%,specificity 88.6%, and diagnostic rate 91.7%. For diagnosis of benign and malignant effusions by combining E-cadherin ICC and calretinin ICC, the specificities were up to 100%and 97.1%, respectively.CONCLUSION: E-cadherin ICC and calretinin ICC are sensitive and specific in differential diagnosis of benign and malignant serous effusion specimens and specificities are evidently improved when both markers are combined.

  6. Differentiating benign from malignant bone tumors using fluid-fluid level features on magnetic resonance imaging

    International Nuclear Information System (INIS)

    To analyze different fluid-fluid level features between benign and malignant bone tumors on magnetic resonance imaging (MRI). This study was approved by the hospital ethics committee. We retrospectively analyzed 47 patients diagnosed with benign (n = 29) or malignant (n = 18) bone tumors demonstrated by biopsy/surgical resection and who showed the intratumoral fluid-fluid level on pre-surgical MRI. The maximum length of the largest fluid-fluid level and the ratio of the maximum length of the largest fluid-fluid level to the maximum length of a bone tumor in the sagittal plane were investigated for use in distinguishing benign from malignant tumors using the Mann-Whitney U-test and a receiver operating characteristic (ROC) analysis. Fluid-fluid level was categorized by quantity (multiple vs. single fluid-fluid level) and by T1-weighted image signal pattern (high/low, low/high, and undifferentiated), and the findings were compared between the benign and malignant groups using the chi2 test. The ratio of the maximum length of the largest fluid-fluid level to the maximum length of bone tumors in the sagittal plane that allowed statistically significant differentiation between benign and malignant bone tumors had an area under the ROC curve of 0.758 (95% confidence interval, 0.616-0.899). A cutoff value of 41.5% (higher value suggests a benign tumor) had sensitivity of 73% and specificity of 83%. The ratio of the maximum length of the largest fluid-fluid level to the maximum length of a bone tumor in the sagittal plane may be useful to differentiate benign from malignant bone tumors.

  7. Role of Duplex Power Doppler Ultrasound in Differentiation between Malignant and Benign Thyroid Nodules

    Energy Technology Data Exchange (ETDEWEB)

    Algin, Oktay [Ataturk Training and Research Hospital Bilkent, Ankara (Turkmenistan); Algin, Efnan [Gazi University Medical Faculty, Ankara (Turkmenistan); Gokalp, Gokhan; Ocakog, Gokhan; Erdog an, Cuneyt; Saraydaroglu, Ozlem; Ercan Tuncel, Prof [Uludag University Medical Faculty, Bursa (Turkmenistan)

    2010-12-15

    To evaluate the usage of duplex power Doppler ultrasound (PDUS) for the differentiation of benign and malignant thyroid nodules. We prospectively examined 77 thyroid nodules in 60 patients undergoing ultrasound-guided fine needle aspiration biopsy (FNAB). Each nodule was described according to size, inner structure, borders, parenchymal echogenicity, peripheral halo formation, and the presence of calcification (Bmode ultrasound findings). Vascularity as determined by PDUS imaging was defined as non-vascular, peripheral, central, or of mixed type. For each nodule, the pulsatility index (PI) and resistive index (RI) values were obtained. Results of FNAB and surgical pathological examination (if available) were used as a proof of final diagnosis to categorize all nodules as benign or malignant. A receiver operating characteristic (ROC) curve analysis was performed to establish cut-off, sensitivity, and specificity values associated with RI-PI values. A significant relationship was observed between malignancy and irregular margins, microcalcifications, and hypoechogenicity on ultrasound examination (p < 0.05). The pattern of vascularity as determined by PDUS analysis was not a statistically significant criterion to suggest benign or malignant disease in this study (p > 0.05). The central, peripheral, and mean RI-PI values were higher in malignant nodules when compared to the other cytologies (p < 0.05). Vascularity is not a useful parameter for distinguishing malignant from benign thyroid nodules. However, RI and PI values are useful in distinguishing malignant from benign thyroid nodules

  8. Bone tumors with an associated pathologic fracture: Differentiation between benign and malignant status using radiologic findings

    Energy Technology Data Exchange (ETDEWEB)

    Bae, Ji Hyun; Lee, In Sook; Song, You Seon [Pusan National University School of Medicine, Pusan National University Hospital, Busan (Korea, Republic of); Kim, Jeung Il [Dept. of Radiology, Yeungnam University College of Medicine, Yeungnam University Medical Center, Daegu (Korea, Republic of); Lee, Moon Sung [Dept. of Radiology, Keimyung University College of Medicine, Dongsan Medical Center, Daegu (Korea, Republic of); Lee, Young Hwan [Dept. of Radiology, Catholic University of Daegu College of Medicine, Daegu Catholic University Hospital, Daegu (Korea, Republic of); Song, Jong Woon [Dept. of Radiology, Inje University College of Medicine, Haeundae Paik Hospital, Busan (Korea, Republic of)

    2015-10-15

    To determine whether benign and malignant bone tumors with associated pathologic fractures can be differentiated using radiologic findings. Seventy-eight patients (47 men and 31 women, age range: 1-93 years) with a bone tumor and an associated pathologic fracture from 2004 to 2013 constituted the retrospective study cohort. The tumor size, margin, and enhancement patterns; the presence of sclerotic margin, the peritumoral bone marrow, soft tissue edema, extra-osseous soft tissue mass, intratumoral cystic/hemorrhagic/necrotic regions, mineralization/sclerotic regions, periosteal reaction and its appearance; and cortical change and its appearance were evaluated on all images. Differences between the imaging characteristics of malignant and benign pathologic fractures were compared using Pearson's chi-square test and the 2-sample t-test. There were 22 benign and 56 malignant bone tumors. Some factors were found to significantly differentiate between benign and malignant tumors; specifically, ill-defined tumor margin, the presence of sclerotic tumor margin and an extra-osseous soft tissue mass, the absence of cystic/necrotic/hemorrhagic portions in a mass, the homogeneous enhancement pattern, and the presence of a displaced fracture and of underlying cortical change were suggestive of malignant pathologic fractures. Some imaging findings were helpful for differentiating between benign and malignant pathologic fractures.

  9. Diagnosis of benign and metastatic bone lesions on breast MRI in patients with breast cancer

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Bo Bae; Hwang, Ji Young; Cha, Eun Suk [Dept. of Radiology, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul (Korea, Republic of)

    2014-02-15

    To differentiate between the MRI findings for benign bone lesion and metastasis detected by breast MRI in patients with breast cancer and to evaluate the conspicuity of bone lesions according to MR sequences. In 14 patients with 15 bone lesions, the MRI findings were statistically analyzed to differentiate between benign bone lesion and metastasis. We considered margin, signal intensity on T2-weighted image (T2WI) with spectral attenuated inversion recovery (SPAIR), enhancement, and patterns of bone lesions (focal mass, diffuse infiltration, and extraosseous soft tissue change), as well as the conspicuity of bone lesions in each MR sequence. There was a statistically significant difference in the frequency of a solitary focal mass pattern between benign bone lesion and metastasis (p = 0.044). The margin, signal intensity on T2WI with SPAIR, and enhancement were not significantly different between benign bone lesion and metastasis. Both T2WI with SPAIR and delayed phase of contrast enhanced MRI were superior to other sequences in terms of lesion conspicuity. A solitary focal mass pattern indicates a high probability of benign bone lesion on breast MRI in patients with breast cancer. Bone lesions tend to have greater conspicuity on T2WI with SPAIR and delayed phase image of contrast enhanced MRI, compared to results for other MR sequences.

  10. The Management of Benign Concordant MRI-guided Brest Biopsies: Lessons Learned.

    Science.gov (United States)

    Lee, Su-Ju; Mahoney, Mary C; Redus, Zachary

    2015-01-01

    After benign concordant magnetic resonance imaging (MRI)-guided breast biopsy, initial follow-up MRI at 6 months is often recommended for confirmation. This study was undertaken to determine the proper management of stable lesions on initial follow-up MRI and whether such follow-up can be safely deferred to 12 months. Retrospective review of 240 MRI-guided biopsies identified 156 benign concordant lesions. 85 eligible cases received follow-up MRI and constitute the study population. On initial follow-up MRI, 72 of 85 lesions appeared adequately sampled, 12 were stable and underwent further MRI follow-up, and 1 was benign on subsequent surgery. No cancers were diagnosed at the biopsy sites on either 6- or 12-month follow-up MRI. Among the 12 stable lesions, four were masses and eight were nonmass enhancements. One of the stable masses enlarged on 24-month follow-up MRI and proved malignant. All stable nonmass lesions were benign on long-term follow-up. After benign concordant MRI-guided breast biopsy, a stable mass has a 25% probability of malignancy in our series. Re-biopsy of such masses should be strongly considered. Stable nonmass lesions may be followed with subsequent MRI without rebiopsy. Deferral of initial follow-up MRI to 12 months may be acceptable.

  11. Diagnosis of benign and metastatic bone lesions on breast MRI in patients with breast cancer

    International Nuclear Information System (INIS)

    To differentiate between the MRI findings for benign bone lesion and metastasis detected by breast MRI in patients with breast cancer and to evaluate the conspicuity of bone lesions according to MR sequences. In 14 patients with 15 bone lesions, the MRI findings were statistically analyzed to differentiate between benign bone lesion and metastasis. We considered margin, signal intensity on T2-weighted image (T2WI) with spectral attenuated inversion recovery (SPAIR), enhancement, and patterns of bone lesions (focal mass, diffuse infiltration, and extraosseous soft tissue change), as well as the conspicuity of bone lesions in each MR sequence. There was a statistically significant difference in the frequency of a solitary focal mass pattern between benign bone lesion and metastasis (p = 0.044). The margin, signal intensity on T2WI with SPAIR, and enhancement were not significantly different between benign bone lesion and metastasis. Both T2WI with SPAIR and delayed phase of contrast enhanced MRI were superior to other sequences in terms of lesion conspicuity. A solitary focal mass pattern indicates a high probability of benign bone lesion on breast MRI in patients with breast cancer. Bone lesions tend to have greater conspicuity on T2WI with SPAIR and delayed phase image of contrast enhanced MRI, compared to results for other MR sequences.

  12. Bone tumors with an associated pathologic fracture: Differentiation between benign and malignant status using radiologic findings

    International Nuclear Information System (INIS)

    To determine whether benign and malignant bone tumors with associated pathologic fractures can be differentiated using radiologic findings. Seventy-eight patients (47 men and 31 women, age range: 1-93 years) with a bone tumor and an associated pathologic fracture from 2004 to 2013 constituted the retrospective study cohort. The tumor size, margin, and enhancement patterns; the presence of sclerotic margin, the peritumoral bone marrow, soft tissue edema, extra-osseous soft tissue mass, intratumoral cystic/hemorrhagic/necrotic regions, mineralization/sclerotic regions, periosteal reaction and its appearance; and cortical change and its appearance were evaluated on all images. Differences between the imaging characteristics of malignant and benign pathologic fractures were compared using Pearson's chi-square test and the 2-sample t-test. There were 22 benign and 56 malignant bone tumors. Some factors were found to significantly differentiate between benign and malignant tumors; specifically, ill-defined tumor margin, the presence of sclerotic tumor margin and an extra-osseous soft tissue mass, the absence of cystic/necrotic/hemorrhagic portions in a mass, the homogeneous enhancement pattern, and the presence of a displaced fracture and of underlying cortical change were suggestive of malignant pathologic fractures. Some imaging findings were helpful for differentiating between benign and malignant pathologic fractures

  13. MRI findings of ovarian tumors : differentiation of benign from malignant lesions

    Energy Technology Data Exchange (ETDEWEB)

    Yun, Hee Ja; Lee, Min Hee; Lim, Soo Mi; Kim, Hyae Young; Baek, Seung Yon; Lee, Sun Wha [Ewha Womans Univ. College of Medicine, Seoul (Korea, Republic of); Ko, Eun Joo [Eulgi Medical Center, Seoul (Korea, Republic of); Lee, Myung Sook [Samsung Cheil Hospital, Seoul (Korea, Republic of)

    1997-05-01

    To evaluate the usefulness of MRI findings in the differentiation of benign from malignant ovarian lesions. Using MR findings, 29 surgically proven ovarian masses in 22 patients (14 bilateral tumors) were evaluated Twenty-one benign tumors in 16 patients(5 simple cysts, 4 mucinous cystadenomas, 4 serous cystadenomas, 4 endometriomas, 3 cystic teratomas and 1 tuboovarian abscess), and eight malignant tumors in six patients(4 serous papillary cystadenocarcinomas and 4 mucinous cystadenocarcinomas) were included. MRI was performed with SE T1WI, FSE T2WI and Gd-T1WI. MRI findings of lesion size, thickness of wall and of internal septations, number of internal septations, nodularities, and ancillary findings such as adhesion in the pelvic cavity, dissemination, ascites and 1ymphadenopathy were retrospectively analyzed. Malignant ovarian lesions were larger(18cm : 11cm) and had more internal septations, more solid components and nodularities(63% : 5%) than benign lesions. On T1WI, cystic lesions, both benign and malignant, showed low signal intensity. Hemorrhage, fat components and mucin containing lesions showed high signals and solid components and nodularities were isointense with muscle on T1WI. Solid components and nodularities were well-enhanced after gadolinium enhancement. Adhesion(50% : 10%), dissemination(38% : 0%) and ascites(63% : 24%) were more frequent in malignant lesions. MRI, especially with gadolinium-enhanced T1WI is useful in the differentiation of benign from malignant ovarian lesions.

  14. Pulmonary Benign Metastasizing Leiomyoma from the Uterine Leiomyoma: A Case Report

    International Nuclear Information System (INIS)

    Benign metastasizing leiomyoma (BML) is a rare condition described as multiple well-differentiated leiomyomas at sites distant from the uterus. Apart from lungs it has also been reported in lymph nodes, heart, brain, bone, skin, eye and spinal cord. We present a case of pulmonary benign metastasizing leiomyoma in a female patient admitted to our hospital with suspicion of left adnexal tumor. A 45-year-old woman was referred to our hospital with suspicion of left adnexal tumor. The control transvaginal ultrasound examination performed at admission to the Gynecological Department excluded adnexal neoplasm. However, a large amount of fluid within the Douglas pouch raised the oncological concern. The patient underwent myomectomy in 2005. In the same year she was diagnosed with multiple lung nodules and underwent pulmonary wedge resection with the diagnosis of pulmonary benign metastasizing leiomyoma being stated. The decision of reevaluation of the specimen, control CT and puncture of the Douglas pouch fluid was made. Computed tomography performed at the Department of Diagnostic Imaging and Interventional Radiology of the Pomeranian Medical University Hospital revealed multiple, bilateral nodules. The microscopic examination of the samples confirmed the initial diagnosis of benign metastasizing leiomyoma with no evidence of neoplastic cells within the fluid. Pulmonary benign metastasizing leiomyoma is a rare entity. However, it should be always taken into consideration in women with a previous or coincident history of uterine leiomyoma, especially when no evidence of other malignancy is present

  15. Solid pseudopapillary carcinoma of the pancreas: differentiation from benign solid pseudopapillary tumour using CT and MRI

    International Nuclear Information System (INIS)

    Aim: To describe the computed tomography (CT) and magnetic resonance imaging (MRI) findings that differentiate solid pseudopapillary carcinomas (SPC) from benign solid pseudopapillary tumours (SPT) of the pancreas. Materials and methods: Preoperative CT or MRI images for 26 patients (eight patients with SPC and 18 patients with SPT) were retrospectively reviewed. In addition to the general morphological features, the presence of pancreatic duct dilation, vascular invasion, and extrapancreatic metastases were comparatively assessed. Results: There were no significant differences between pancreatic SPC and benign SPT with respect to tumour size, location, capsule thickness, internal composition, and pattern of calcification, nor was there any correlation with the age and gender of the patients. Pancreatic duct dilation was present in four of the eight (50%) SPC patients, and was absent in all benign SPT patients (p = 0.005). Vascular encasement by the tumour (n = 2) and hepatic metastases (n = 2) were also exclusively demonstrated in SPC patients. Multivariate logistic regression analysis showed that pancreatic duct dilation (p = 0.001), vessel encasement (p = 0.027), and metastasis (p = 0.027) were the variables that can be used to differentiate SPC from benign SPT. Conclusion: SPC of the pancreas may help to differentiate from benign SPT using the imaging features of aggressive behaviour of pancreatic duct dilation and vessel encasement with or without extrapancreatic metastases

  16. Ocular vestibular evoked myogenic potential in patients with benign paroxysmal positional vertigo

    Directory of Open Access Journals (Sweden)

    Mozhgan Masoom

    2014-06-01

    Full Text Available Background and Aim: Since utricle is the main damaged organ in benign paroxysmal positional vertigo (BPPV, ocular vestibular evoked myogenic potential (oVEMP may be an appropriate method to evaluate the utricule dysfunction and the effect of disease recurrence rate on it. This study aimed to record myogenic potential in patients with benign paroxysmal positional vertigo.Methods: In a cross-sectional study, ocular myogenic potential was recorded in 25 healthy subjects and 20 patients with benign paroxysmal positional vertigo using 500 Hz-tone bursts (95 dB nHL.Results: In the affected ear, mean amplitude was lower and mean threshold was higher than those in the unaffected ear and in the normal group (p<0.05. Mean amplitude asymmetry ratio of patients was more than the healthy subjects (p0.05. Frequencies of abnormal responses in the affected ears were higher than in unaffected ears and in the normal group (p<0.05. Furthermore, the patients with recurrent vertigo showed more abnormalities than the patients with non-recurrent (p=0.030.Conclusion: In the recurrent benign paroxysmal positional vertigo, ocular vestibular evoked myogenic potential showed more damage in the utricle, suggesting this response could be used to evaluate the patients with benign paroxysmal positional vertigo.

  17. Discovery of potent, novel, non-toxic anti-malarial compounds via quantum modelling, virtual screening and in vitro experimental validation

    Directory of Open Access Journals (Sweden)

    Kaludov Nikola

    2011-09-01

    Full Text Available Abstract Background Developing resistance towards existing anti-malarial therapies emphasize the urgent need for new therapeutic options. Additionally, many malaria drugs in use today have high toxicity and low therapeutic indices. Gradient Biomodeling, LLC has developed a quantum-model search technology that uses quantum similarity and does not depend explicitly on chemical structure, as molecules are rigorously described in fundamental quantum attributes related to individual pharmacological properties. Therapeutic activity, as well as toxicity and other essential properties can be analysed and optimized simultaneously, independently of one another. Such methodology is suitable for a search of novel, non-toxic, active anti-malarial compounds. Methods A set of innovative algorithms is used for the fast calculation and interpretation of electron-density attributes of molecular structures at the quantum level for rapid discovery of prospective pharmaceuticals. Potency and efficacy, as well as additional physicochemical, metabolic, pharmacokinetic, safety, permeability and other properties were characterized by the procedure. Once quantum models are developed and experimentally validated, the methodology provides a straightforward implementation for lead discovery, compound optimizzation and de novo molecular design. Results Starting with a diverse training set of 26 well-known anti-malarial agents combined with 1730 moderately active and inactive molecules, novel compounds that have strong anti-malarial activity, low cytotoxicity and structural dissimilarity from the training set were discovered and experimentally validated. Twelve compounds were identified in silico and tested in vitro; eight of them showed anti-malarial activity (IC50 ≤ 10 μM, with six being very effective (IC50 ≤ 1 μM, and four exhibiting low nanomolar potency. The most active compounds were also tested for mammalian cytotoxicity and found to be non-toxic, with a

  18. Treatment of the benign bone tumors including femoral neck lesion using compression hip screw and synthetic bone graft

    OpenAIRE

    Nakamura Tomoki; Matsumine Akihiko; Asanuma Kunihiro; Matsubara Takao; Sudo Akihiro

    2015-01-01

    Purpose: The proximal femur is one of the most common locations for benign bone tumors and tumor like conditions. We describe the clinical outcomes of the surgical treatment of benign lesions of the proximal femur including femoral neck using compression hip screw and synthetic bone graft. Methods: Thirteen patients with benign bone tumors or tumor like conditions of the proximal femur including femoral neck were surgically treated. Their average age at the time of presentatio...

  19. Effectiveness and Safety of Endoscopic Treatment of Benign Biliary Strictures Using a New Fully Covered Self Expandable Metal Stent

    OpenAIRE

    Wagh, Mihir S.; Disaya Chavalitdhamrong; Koorosh Moezardalan; Chauhan, Shailendra S.; Gupte, Anand R.; Michael J. Nosler; Forsmark, Chris E.; Draganov, Peter V.

    2013-01-01

    Background. In patients with benign biliary strictures, the use of fully covered self-expandable metal stents (SEMS) has been proposed as an alternative to plastic stenting, but high quality prospective data are sparse. This study was performed to evaluate the long-term effectiveness and safety of a new fully covered SEMS for benign biliary strictures. Methods. All consecutive patients with benign biliary strictures were treated with placement of a fully covered SEMS (WallFlex) for 6 mon...

  20. Time resolved optical biopsy spectroscopy of normal, benign and malignant tissues from NADH and FAD changes

    Science.gov (United States)

    Masilamani, V.; Das, B. B.; Secor, J.; AlSalhi, M.; Amer, S. B.; Farhat, K.; Rabah, D.; Alfano, R. R.

    2012-01-01

    Histo pathological examination is the gold standard to discriminate between benign and malignant growth of tissue. But this is invasive and stressful. Hence many non invasive imaging techniques, such as CT, MRI, PET, etc are employed, each having certain advantages and disadvantages. In this context optical biopsy is a newly emerging technique, since it employs non-ionizing radiation like light or laser, which could be shined directly or launched through optical fiber to reach any part of the body. This paper reports results of time resolved emission spectra of 24 excised tissue sample (normal control=12; benign=4; malignant=8) of breast and prostate, employing a 390nm, 100 fs, Ti-Sapphire laser pulses. The fluorescence decay times were measured using streak camera and fitted for single and bi- exponential decays with reliability of 97%. Our results show the distinct difference between normal, benign and malignant tissues attributed changes of NADH and FAD levels.