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Sample records for brachiocephalic veins

  1. Brachiocephalic trunk and left brachiocephalic vein injuries following penetrating right sternoclavicular junction trauma: a case report

    Institute of Scientific and Technical Information of China (English)

    KONG Ling-wen; TAN Yuan-kang; DU Ding-yuan; SU Hong-jie; ZHANG Wei-ming; ZHAO Xing-ji

    2013-01-01

    A 46-year-old male sustained severe penetrating injury by a sharp instrument to his right upper sternoclavicular junction.The wound tract was from suprasternal notch to mediastinum.Exploratory operation via median sternotomy under general anesthesia found a large mediastinal septum hematoncus,as well as brachiocephalic trunk and left brachiocephalic vein injuries.The perforating vascular wounds were repaired with 5-0 prolene suture.He was recovered uneventfully and discharged 9 days after operation.There was no sequel found during 7 years follow-up.

  2. The Hunter pulmonary angiography catheter for a brachiocephalic vein approach.

    Science.gov (United States)

    Rosen, Galia; Kowalik, Karen J; Ganguli, Suverano; Hunter, David W

    2006-01-01

    The purpose of this work was to describe our experience in performing pulmonary angiography using the Hunter pulmonary catheter, manufactured by Cook, Inc., which is a modified 6F pigtail catheter with a "C-shaped" curve, designed for a brachiocephalic vein approach. One hundred twenty-three patients underwent pulmonary angiograms using the Hunter catheter between August 1997 and January 2002. Operator comments were gathered in 86 (70%) of the cases. The operator was, if possible, the most junior resident on the service. Thirty-nine operators participated in the survey. Efficacy, safety, and ease of use of the catheter were determined by operators' comments and ECG observations during the procedure. Corroborating clinical data were gathered from medical records. In 68 (79%) of the procedures that were commented upon, the operator described insertion into the pulmonary artery (PA) as easy; only 2 (2%) indicated difficulty in accessing the PA. In 41 (63%) of the bilateral angiograms that were commented upon, the operator described accessing the left PA from the right PA as easy; only 6 (9%) rated it as difficult and all were with an older technique in which the catheter was withdrawn to the pulmonary bifurcation without a wire or with only the soft tip of the wire in the pigtail and then rotated to the left main pulmonary artery. Thirty-one of the 41 patients who demonstrated premature ventricular contractions (PVCs) had a previous history of heart disease. Nineteen of the 39 patients who did not have PVCs had a history of heart disease (p = 0.018). The maneuverability and shape of the Hunter catheter make pulmonary angiography an easy procedure, even for operators with minimal experience and limited technical proficiency. PVCs demonstrated a statistically significant correlation with a positive patient history for cardiac disease, rather than being a universal risk.

  3. Stenting of the Superior Vena Cava and Left Brachiocephalic Vein with Preserving the Central Venous Catheter in Situ

    Energy Technology Data Exchange (ETDEWEB)

    Isfort, Peter; Penzkofer, Tobias; Goerg, Fabian; Mahnken, Andreas H. [University Hospital RWTH Aachen, Aachen(Korea, Republic of)

    2011-10-15

    Stenting of the central veins is well established for treating localized venous stenosis. The techniques regarding catheter preservation for central venous catheters in the superior vena cava have been described. We describe here a method for stent implantation in the superior vena cava and the left brachiocephalic vein, and principally via a single jugular venous puncture, while saving a left sided jugular central venous catheter in a patient suffering from central venous stenosis of the superior vena cava and the left brachiocephalic vein.

  4. Bilateral brachiocephalic vein compression: an unusual and rare presentation of multinodular goitre.

    Science.gov (United States)

    McNeill, Caitlin Jane; Sinnott, Joseph Dalby; Howlett, David

    2016-10-08

    An interesting and rare case where a longstanding multinodular goitre causes sudden onset symptoms of superior vena cava obstruction. The symptoms were caused by bilateral brachiocephalic vein compression against the first rib. The patient's symptoms included upper limb and facial swelling, whereas her lower limbs were not oedematous (figure 1). The patient underwent CT imaging which showed a multinodular retrosternal thyroid filling the space created by the first rib, sometimes known as the thoracic outlet. The goitre expanded sufficiently to compress the brachiocephalic vein on both sides as shown in figures 2 and 3. This prevented venous drainage from the upper limbs and head. The goitre was also large enough to cause deviation of the trachea although there was no airway compromise. This case is interesting as it is very rare for a benign condition such as a multinodular goitre to cause symptoms of superior vena cava obstruction.

  5. Vertebral body enhancement mimicking sclerotic osseous lesions in the setting of bilateral brachiocephalic vein thrombosis.

    Science.gov (United States)

    Berritto, Daniela; Abboud, Salim; Kosmas, Christos; Riherd, Daniel; Robbin, Mark

    2015-02-01

    Contrast enhancement of the vertebral body marrow may be seen secondary to collateral venous blood flow via the vertebral venous plexus in the setting of superior vena cava obstruction. We report a 48-year-old woman presenting with bilateral brachiocephalic vein obstruction and multilevel thoracic spine hyperdensities as seen on venous-phase CT angiography (CTA), initially concerning for sclerotic neoplastic lesions. A contrast-enhanced CT of the neck obtained 1 day prior to the chest CTA did not demonstrate any osseous abnormality, and inspection of the chest CTA demonstrated filling of perivertebral venous collateral vessels. The abnormal vertebral body enhancement was therefore feltsecondary to retrograde collateral venous flow via the basivertebral venous plexus in the setting of functional SVC obstruction. Vertebral body enhancement should be considered in patients with thoracic central venous obstruction when enhancement or apparent sclerosis of the vertebral bodies is seen on CTA.

  6. Left Brachiocephalic Vein Cannulation in Bicaval Venous Drainage Is Safe, Effective, and Technically Advantageous.

    Science.gov (United States)

    Aazami, Mathias Hossain; Gholoobi, Arash; Amini, Shahram; Abdollahi-Moghadam, Alireza; Soltani, Ghassem

    2016-04-01

    Direct cannulation of both venae cavae (bicaval venous cannulation) is the gold standard for right atrial isolation in intracavitary surgery, but there has been no consensus about an alternative site. Therefore, we studied an alternative method for bicaval venous drainage in which the left brachiocephalic vein (LBCV) is cannulated instead of the superior vena cava. From 2012 through 2014, we performed routine LBCV cannulation in 150 consecutive patients as part of bicaval venous drainage before right atrial isolation. We prospectively collected demographic information, operative data, total pump and LBCV cannula flows with their respective calculated and indexed rates, central venous pressures, and perioperative complications. All patients survived surgery. There were no adverse technical outcomes or functional deficits associated with the technique. The mean indexed LBCV cannula flow was 1,520 ± 216 mL/min/m(2), representing an LBCV cannula-to-calculated pump-flow ratio of 64%. The mean central venous pressure during right atrial isolation was 3.7 ± 1.9 mmHg. Cannulation of the LBCV is intrinsically a safe and reproducible procedure with proven hemodynamic adequacy. Its versatility can be an asset to surgical techniques and perfusion methods. Furthermore, the hemodynamic results in our series promise alternative intrathoracic and extracardiac cannulation sites for mini-extracorporeal circulation, on-pump beating-heart procedures, and short-term circulatory assist device implementation.

  7. A Primary Primitive Neuroectodermal Tumor Arising from Left Subclavian Vein and Extending along Left Brachiocephalic Vein and Superior Vena Cava into Right Atrium.

    Science.gov (United States)

    Wang, Jian; Wang, Weici; Li, Yiqing; Jin, Bi; Yu, Miao; Liu, Wenqi; Yao, Shaohua; Liao, Yonggui; Ouyang, Chenxi

    2015-01-01

    Primitive neuroectodermal tumor (PNET) is an extremely rare malignancy thought to be derived from fetal neuroectodermal precursor cells. It usually occurs in central and peripheral nervous system or soft tissue and bone, while intravenous or intracavitary PNET is considered as an extremely rare tumor. We reported a case of a 44-year-old woman who presented with the left unilateral facial and neck swelling. Magnetic resonance imaging revealed a tape-shaped solid mass within left subclavian vein, left brachiocephalic vein, superior vena cava, and right atrium; the proximal end proportion occupied almost the entire right atrium with a pedicle flip protruded into the right ventricle. Ultrasonography revealed an irregular hypoechnoic mass arising from the left subclavian vein, which extended along the left brachiocephalic vein and superior vena cava into the right atrium and up to the right ventricle. Positron emission tomography-computed tomography revealed several hypermetabolic thyroid nodules with no evidence of intravenous hyperactive lesion. The patient underwent tumor resection under cardiopulmonary bypass. At 15 days postoperatively, total thyroidectomy and resection of the left subclavian vein were simultaneously performed. The patient received chemotherapy and radiotherapy later. Histologically, the neoplasm displayed small, round, blue cells with hyperchromatic nuclei and scant cytoplasm. The neoplastic cells showed a strong immunopositivity for CD99, synaptophysin, CD56, CD57, and friend leukemia integration 1, thus confirming a diagnosis of the PNET. Histopathological examination of the thyroid showed papillary carcinoma. Thus, this PNET had no definitive organ or tissue of origin, which primarily originated from the left subclavian vein with tumor extension along the superior vena cava to the right ventricle.

  8. Cephalic arch stenosis in autogenous brachiocephalic hemodialysis fistulas: results of cutting balloon angioplasty

    DEFF Research Database (Denmark)

    Heerwagen, Søren Thorup; Lönn, Lars; Schroeder, Torben V;

    2010-01-01

    Cephalic arch stenosis is a known cause of hemodialysis access failure in patients with brachiocephalic fistulas (BCFs). Outcomes of endovascular treatment are affected by resistance of the stenosis to balloon dilation, a high vein rupture rate and the development of early restenosis. The purpose...

  9. Cephalic arch stenosis in autogenous brachiocephalic hemodialysis fistulas: results of cutting balloon angioplasty

    DEFF Research Database (Denmark)

    Heerwagen, Søren Thorup; Lönn, Lars; Schroeder, Torben V;

    2010-01-01

    Cephalic arch stenosis is a known cause of hemodialysis access failure in patients with brachiocephalic fistulas (BCFs). Outcomes of endovascular treatment are affected by resistance of the stenosis to balloon dilation, a high vein rupture rate and the development of early restenosis. The purpose...... of this retrospective study was to report outcomes after cutting balloon angioplasty (CBA) of cephalic arch stenosis....

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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  13. Diverticulum of the brachiocephalic trunk - angiography and embryological explanation

    Energy Technology Data Exchange (ETDEWEB)

    Pfefferkorn, J.R.; Lunkenheimer, A.; Loeser, H.; Hilgenberg, F.

    1983-03-01

    A diverticulum of the brachiocephalic trunk is described in 5 children with unilateral absence of the pulmonary artery, in a child with tetralogy of Fallot, and in an other child with Bland-White-Garland syndrome. The diverticulum is a remnant of a contralateral ductus arteriosus, which closed after birth and represents the origin of the distal part of the sixth aortic arch.

  14. Successful therapy of brachiocephalic arteriogastric fistula after esophagectomy.

    Science.gov (United States)

    Nagai, Yohei; Watanabe, Masayuki; Ikeda, Osamu; Nakasone, Yutaka; Sakaguchi, Hisashi; Kunitomo, Ryuji; Yamashita, Yasuyuki; Baba, Hideo

    2011-10-01

    We report the case of an 86-year-old man, who had undergone subtotal esophagectomy and reconstruction with a gastric tube through the retrosternal route 7 years ago, who was referred for treatment of a brachiocephalic arteriogastric fistula. An emergency stent-graft placement was performed to prevent massive bleeding from the fistula. After 2 weeks, a follow-up esophagogastroscopy revealed that the gastric tube ulcer had been penetrated, and the stent graft was exposed. Therefore, surgical treatment was indicated. After a carotid-carotid arterial bypass graft was made, the brachiocephalic artery was resected with the stent graft and the gastric wall. The defect between the cervical esophagus and the remnant gastric tube was replaced by a free jejunal graft. The patient tolerated these procedures well and was transferred to the referral hospital 3 months after surgery. Therefore, both an early diagnosis and the administration of multidisciplinary treatment are essential to save patients presenting with an arterioenteric fistula.

  15. Symptomatic obstruction of the brachiocephalic and left subclavian arteries obscured by aortic stenosis.

    Science.gov (United States)

    Hashim, Peter W; Assi, Roland; Grecu, Loreta; Dardik, Alan

    2014-04-01

    Stenosis or occlusion of the brachiocephalic artery represents an uncommon cause of cerebrovascular insufficiency. We report a patient with combined brachiocephalic and left subclavian obstruction with clinical manifestations of lightheadedness, syncope, and left-sided weakness who remained misdiagnosed essentially because of symmetrical pressures in the upper extremities. Aortic valve replacement for aortic stenosis failed to provide symptomatic relief. Eventual stenting of the brachiocephalic trunk resolved the patient's symptoms. Our report highlights the diagnostic challenges in this case of bilateral supraaortic vessel disease and shows that equal upper extremity pressures do not rule out brachiocephalic artery obstruction.

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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  3. Varicose Veins

    Science.gov (United States)

    Varicose veins are swollen, twisted veins that you can see just under the skin. They usually occur in ... of the body. Hemorrhoids are a type of varicose vein. Your veins have one-way valves that help ...

  4. [Acute Postoperative Negative Pressure Pulmonary Edema Caused by the Compression of Brachiocephalic Artery].

    Science.gov (United States)

    Tagawa, Miki; Iwai, Hidetaka; Fukatsu, Ken; Shimada, Mami; Hirabayashi, Yoshihiro

    2016-06-01

    We report a case of negative-pressure pulmonary edema occurring by tracheal obstruction caused by the brachiocephalic artery. The patient had deformed thorax with cerebral palsy, which deformed thorax placing the brachiocephalic artery high over the trachea, resulting in close and tight contact between the artery and trachea. Additional deformity of the thorax associated with myotonic attacks after general anesthesia might shorten the distance between the sternal notch and the vertebral body, resulting in the tracheal obstruction by the artery.

  5. Surgical treatment of brachiocephalic vessel involvement in Takayasu's arteritis

    Institute of Scientific and Technical Information of China (English)

    WU Xin; DUAN Hong-yong; GU Yong-quan; LI Jian-xin; CHEN Bing; WANG Zhong-gao; ZHANG Jian

    2010-01-01

    Background Takayasu's arteritis (TA) is a chronic idiopathic inflammatory disease that affects large and medium size arteries. The brachiocephalic trunk is the most frequently involved site in TA, and multi-vessel lesions are common. Surgical treatment includes vessel reconstruction surgery and percutaneous transluminal angioplasty (PTA). Herein, we report our preliminary experience with surgical treatment of cerebral ischemia caused by cervical arterial lesions due to TA.Methods From January 2000 to December 2007, 38 patients with cerebral ischemia caused by cervical arterial occlusive lesions due to TA were treated surgically. There were three males and 35 females, with an age range of 15-42 years (mean 26.5 years). All patients had operative repairs undertaken. Twenty eight patients received bypass operation and 10 patients received percutaneous transluminal angioplasty. One case with coronary stenosis received coronary artery bypass simultaneously. Patients were followed up for 11 months to eight years.Results There were no peri-operative deaths in cerebrovascular reconstruction patients. Symptoms of cerebral ischemia were improved or cured in 25 of 38 patients. There was a low incidence of cerebral reperfusion syndrome. Two patients died at five and seven years after surgery due to heart failure. Another 8 patients (20%) required further surgery for stenosis (5 patients) or anastomotic aneurysms (3 patients). Percutaneous transluminal angioplasty was performed successfully for treatment of aortic and renal lesions. Repeated angioplasty for revascularization was performed in six PTA cases with restenosis after 5-24 months.Conclusions When cerebral perfusion has potential to be affected by TA, a definitive corrective procedure is advised when the patient is relatively stable. Although the recurrence rate is very high, percutaneous transluminal angioplasty is the first choice procedure. Bypass operation is optimal for brachiocephalic-vessel involvement in TA

  6. Left common carotid artery arising from brachiocephalic trunk and their aberrant course displacing trachea

    Directory of Open Access Journals (Sweden)

    Pratiksha Yadav

    2016-09-01

    Full Text Available Bovine arch commonly refer a group of congenital variations in the branches of arch of aorta, in which there is aberrant origin of left common carotid artery. These are usually detected incidentally, however rarely they can cause dysphagia lusoria. We report a case of bovine arch and aberrant left common carotid artery in a 62 years old female who had come with complaint of mild dyspnea. On radiograph there was superior mediastinal widening and shift of trachea to right side. CT scan was advised for further evaluation. On CECT there was only two main branches arised from arch of aorta, brachiocephalic trunk and right subclavian artery. There was aberrant origin of left common carotid artery seen from brachiocephalic trunk. The brachiocephalic trunk was very tortuous and displacing trachea to right side. [Int J Res Med Sci 2016; 4(9.000: 4220-4222

  7. Diagnosis of Brachiocephalic Thrombophlebitis as the Cause of Fever of Unknown Origin by 18F-FDG-PET/CT

    Directory of Open Access Journals (Sweden)

    Anastas Demirev

    2015-02-01

    Full Text Available Fever of unknown origin (FUO represents a challenge in diagnosis and treatment. The role of 18Ffluorodeoxyglucose positron emission tomography (FDG-PET / computed tomography (CT in the differential diagnosis of this entity is presently well established. We report the case of a patient with infectious/inflammatory symptoms but no evident localization and subsequent relapse, in which PET/CT showed its ability to not only determine the exact localization of a thrombophlebitic focus as cause of FUO, but also to monitor and determine the success of treatment. After performing a FDG-PET/CT and detecting a thrombophlebitis in the brachiocephalic vein, low molecular heparins were introduced in the course of therapy. Soon (about 24 hours thereafter, clinical symptoms significantly decreased and could no longer be observed. After continuing the antibiotic and anticoagulant therapy for 4 weeks, a follow-up PET/CT scan was performed. That scan no longer showed abnormal uptake in the previous intravascular localization. Consequently, we suggest that PET/CT is a diagnostic modality feasible to identify and monitor therapy response of intravascular thrombophlebitic foci.

  8. Diagnosis of Brachiocephalic Thrombophlebitis as the Cause of Fever of Unknown Origin by 18F-FDG-PET/CT

    Science.gov (United States)

    Demirev, Anastas; Brans, Boudewijn; Vanmolkot, Floris; Graaf, Rick De; Mottaghy, Felix; Bucerius, Jan

    2015-01-01

    Fever of unknown origin (FUO) represents a challenge in diagnosis and treatment. The role of 18Ffluorodeoxyglucose positron emission tomography (FDG-PET) / computed tomography (CT) in the differential diagnosis of this entity is presently well established. We report the case of a patient with infectious/inflammatory symptoms but no evident localization and subsequent relapse, in which PET/CT showed its ability to not only determine the exact localization of a thrombophlebitic focus as cause of FUO, but also to monitor and determine the success of treatment. After performing a FDG-PET/CT and detecting a thrombophlebitis in the brachiocephalic vein, low molecular heparins were introduced in the course of therapy. Soon (about 24 hours) thereafter, clinical symptoms significantly decreased and could no longer be observed. After continuing the antibiotic and anticoagulant therapy for 4 weeks, a follow-up PET/CT scan was performed. That scan no longer showed abnormal uptake in the previous intravascular localization. Consequently, we suggest that PET/CT is a diagnostic modality feasible to identify and monitor therapy response of intravascular thrombophlebitic foci. PMID:25800595

  9. Successful surgical repair of impending rupture of a pseudoaneurysm of the brachiocephalic artery with prior reconstruction of the carotid artery

    Energy Technology Data Exchange (ETDEWEB)

    Miyahara, Ken; Maeda, Masanobu; Sakai, Yoshimasa; Sakurai, Hajime; Murayama, Hiroomi; Hasegawa, Hiroki [Social Insurance Chukyo Hospital, Nagoya (Japan)

    2003-01-01

    We report the successful repair of impending rupture of a pseudoaneurysm of the brachiocephalic artery (BCA) in a 70-year-old man. He had undergone a mediastinal tumor resection through a median sternotomy in 1995. Pathological examination revealed non-Hodgkin's lymphoma. Two years later, he underwent radiation therapy of 65 Gray for metastasis to the supraclavicular lymph nodes. On January 18, 2000, plastic surgeons planned to perform a pectoralis major musculocutaneous flap to repair a radiation skin ulcer. During the operation, the BCA was lacerated, possibly in an area of radiation tissue damage. We performed a prosthetic graft (10-mm Gelseal) replacement of the BCA. The right subclavian artery had to be ligated. Postoperative digital subtraction angiography (DSA) showed excellent reconstruction of the artery. Magnetic resonance angiography of the brain showed a deficit in the anterior communicating artery and stenosis of the posterior communicating artery, which indicated that the reconstruction procedure was reasonable. Seven months later, on August 18, 2000, the patient was transferred to our hospital because of swelling of the right neck and oozing from the previous cutaneous wound. CT scan and DSA demonstrated the presence of a pseudoaneurysm of the proximal anastomosis site, which required emergency surgery. Before this third sternotomy, a saphenous vein graft was interposed between both external carotid arteries. Removal of the prosthetic graft and resection of the pseudoaneurysm were performed under mild hypothermia and cardiopulmonary bypass with left common carotid arterial perfusion. Then, the wound was closed completely using a left pectoralis major musculocutaneous flap. The postoperative course was uneventful and DSA showed good patency of the graft and intracranial arteries. The patient was discharged without neurological complications. We conclude that prior reconstruction of the carotid artery is a safe and effective procedure for patients

  10. Anatomy of the bovine ascending aorta and brachiocephalic artery found unfavorable for total artificial heart implant.

    Science.gov (United States)

    Karimov, Jamshid H; Sunagawa, Gengo; Such, Kimberly A; Sale, Shiva; Golding, Leonard A R; Moazami, Nader; Fukamachi, Kiyotaka

    2015-12-01

    The biocompatibility assessment of the Cleveland Clinic continuous-flow total artificial heart is an important part of the device developmental program. Surgical and postoperative management are key factors in achieving optimal outcomes. However, the presence of vascular anatomical abnormalities in experimental animal models is often unpredictable and may worsen the expected outcomes. We report a technical impediment encountered during total artificial heart implantation complicated by unfavorable bovine anatomy of the ascending aorta and brachiocephalic arterial trunk.

  11. Traumatic pseudoaneurysm of the brachiocephalic artery following medianoscopy: initial endovascular repair followed by open surgery--a case report.

    Science.gov (United States)

    Biebl, Matthias; Neuhauser, B; Perkmann, R; Tauscher, T; Waldenberger, P; Fraedrich, G

    2003-06-01

    Endovascular stent graft repair of traumatic vessel injuries is gaining worldwide acceptance as a minimally invasive alternative to open surgical repair. However, effective endovascular repair fails if the aneurysm is not completely excluded. Conversion to open surgery may be unavoidable in such cases. Herein we describe the case of a 45-year-old man who was referred to our hospital with a pseudoaneurysm of the proximal brachiocephalic artery caused by biopsy during diagnostic medianoscopy. The pseudoaneurysm was primarily treated by stent-graft implantation into the proximal brachiocephalic artery. As a result of the unfavorable location of the lesion exclusion of the aneurysm failed and the initial therapy had to be extended to open reconstruction of the brachiocephalic artery. A bypass procedure from the aortic arch to the right common carotid artery was performed with reinsertion of the right subclavian artery to exclude the pseudoaneurysm.

  12. Varicose vein - noninvasive treatment

    Science.gov (United States)

    Sclerotherapy; Laser therapy - varicose veins; Radiofrequency vein ablation; Endovenous thermal ablation; Ambulatory phlebectomy; Transilluminated power phlebotomy; Endovenous laser ablation; Varicose vein ...

  13. Deep Vein Thrombosis

    Science.gov (United States)

    Deep vein thrombosis, or DVT, is a blood clot that forms in a vein deep in the body. Most deep vein ... the condition is called thrombophlebitis. A deep vein thrombosis can break loose and cause a serious problem ...

  14. Varicose vein stripping

    Science.gov (United States)

    ... vein stripping; Venous reflux - vein stripping; Venous ulcer - veins Images Circulatory system References American Family Physician. Management of varicose veins. www.aafp.org/afp/2008/1201/p1289.html . ...

  15. Transposition of cephalic vein to rescue hemodialysis access arteriovenous fistula and treat symptomatic central venous obstruction

    Directory of Open Access Journals (Sweden)

    Felipe Jose Skupien

    2014-03-01

    Full Text Available It is known that stenosis or central venous obstruction affects 20 to 50% of patients who undergo placement of catheters in central veins. For patients who are given hemodialysis via upper limbs, this problem causes debilitating symptoms and increases the risk of loss of hemodialysis access. We report an atypical case of treatment of a dialysis patient with multiple comorbidities, severe swelling and pain in the right upper limb (RUL, few alternative sites for hemodialysis vascular access, a functioning brachiobasilic fistula in the RUL and severe venous hypertension in the same limb, secondary to central vein occlusion of the internal jugular vein and right brachiocephalic trunk. The alternative surgical treatment chosen was to transpose the RUL cephalic vein, forming a venous necklace at the anterior cervical region, bypassing the site of venous occlusion. In order to achieve this, we dissected the cephalic vein in the right arm to its junction with the axillary vein, devalved the cephalic vein and anastomosed it to the contralateral external jugular vein, providing venous drainage to the RUL, alleviating symptoms of venous hypertension and preserving function of the brachiobasilic fistula.

  16. Isolated left brachiocephalic artery with the right aortic arch: A rare differential of large patent ductus arteriosus

    Science.gov (United States)

    Dubey, Gajendra; Gupta, Saurabh Kumar; Kothari, Shyam Sundar

    2017-01-01

    We report a case of isolation of the left brachiocephalic artery with the right aortic arch in a 9-year-old male child masquerading as large patent ductus arteriosus with left-to-right shunt. We have emphasized the subtle clinical findings which served as clues to the diagnosis. PMID:28163435

  17. Anatomical variation of thyroid veins on contrast-enhanced multi-detector row computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Tomita, Hayato, E-mail: m04149@yahoo.co.jp [Department of Radiology, St. Marianna University School of Medicine, Yokohama City Seibu Hospital, 1197-1 Yasashicho, Asahi-ku, Yokohama, Kanagawa 241-0811 (Japan); Yamada, Takayuki; Murakami, Kenji; Hashimoto, Kazuki; Tazawa, Yoko; Kumano, Reiko [Department of Radiology, St. Marianna University School of Medicine, Yokohama City Seibu Hospital, 1197-1 Yasashicho, Asahi-ku, Yokohama, Kanagawa 241-0811 (Japan); Nakajima, Yasuo [Department of Radiology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa 216-8511 (Japan)

    2015-05-15

    Highlights: • This is the first study to demonstrate the anatomy of thyroid veins on contrasted-enhanced MDCT. • Identifying the thyroid vein on MDCT prior to selective venous sampling of parathyroid hormone provides clinical information to interventional radiologist. • Detecting especially the inferior thyroid veins with individual variability in numbers, locations, and lengths may have an effect on SVS for HPT and decrease the difficulty and time of the procedure. - Abstract: Objective: The objective of this study was to clarify the anatomical variation of thyroid veins into the systemic vein using contrast-enhanced multi-detector row computed tomography (MDCT). Design and methods: : The subjects were 80 patients (34 males and 46 females; mean age, 50.1 years; age range, 15–92 years) with neck diseases who underwent MDCT. The number and location of inflow points of the thyroid veins into the systemic vein, and the length from the junction of bilateral brachiocephalic veins to the orifice of inferior thyroid vein were investigated by reviewing the axial and coronal images. Results: All superior thyroid veins were detected. Right and left middle thyroid veins were identified in 39 and 29 patients, respectively. Right inferior thyroid veins, left inferior thyroid veins, and common trunks were detected in 43, 46, and 39 patients, respectively; in five patients, two left thyroid veins were identified. All left inferior thyroid veins and 34 common trunks flowed into the innominate vein, while right ones had some variations in inflow sites. Mean lengths were 3.01 ± 1.30 cm (range, 0.5–6.19) and 2.04 ± 0.91 cm (0.5–4.4) in the left inferior thyroid vein and common trunk, and 1.96 ± 1.05 cm (0.81–4.8) and 1.65 ± 0.69 cm (0.63–2.94) in the right one flowing into the right internal jugular vein and the innominate vein, respectively. Conclusions: The numbers and orifices of thyroid veins were identified at high rates on contrast-enhanced MDCT. This

  18. Portal Vein Thrombosis

    OpenAIRE

    Hakan Demirci

    2016-01-01

    Portal vein thrombosis is an important cause of presinusoidal portal hypertension. Portal vein thrombosis commonly occurs in patient with cirrhosis, malignancy and prothrombotic states. Patients with acute portal vein thrombosis have immediate onset. Patients with chronic portal vein thrombosis have developed portal hypertension and cavernous portal transformation. Portal vein thrombosis is diagnosed with doppler ultrasound, computed tomography and magnetic resonance imaging. Therapy with low...

  19. Isolated left innominate vein aneurysm: A rare cause of mediastinal widening

    Directory of Open Access Journals (Sweden)

    S G Dua

    2011-01-01

    Full Text Available Mediastinal widening in an adult is mostly nodal in origin. Occasionally vascular aneurysms may be the underlying cause, in which case the aorta or its branches are most frequently involved. Thoracic venous aneurysms, on the other hand, have been reported only in anecdotes, with fusiform aneurysm of the superior vena cava being the commonest. Isolated aneurysms involving the brachiocephalic/innominate vein are extremely rare. We describe detection of a saccular aneurysm of the innominate vein, as the underlying cause of mediastinal widening seen on a chest radiograph in a 42-year-old asymptomatic woman. The characteristic radiological findings of thoracic venous aneurysms are described with particular reference to the importance of multiplanar computed tomography in such settings. Also discussed is the role of imaging in the diagnosis and guiding the management of this rare entity.

  20. Thrombosis of the superior vena cava and auxiliary branches in patients with indwelling catheterization of the internal jugular vein

    Institute of Scientific and Technical Information of China (English)

    LI Han; WANG Shi-xiang; WANG Wei; XU Chen; SHEN Shen; YU Ling; ZHANG Gui-zhi

    2009-01-01

    Background Central venous thrombosis is a serious and life-threatening complication in hemodialysis (HD) patients with an indwelling catheter. The present study aimed to investigate the prevalence and characteristics of thrombosis of the superior vena cava and auxiliary branches in Chinese HD patients with an indwelling internal jugular venous catheter and to explore its risk factors.Methods Fifty-four patients on maintenance hemodialysis (MHD) with an indwelling catheter were enrolled in this cross-sectional study. The thrombosis of the internal jugular vein, subclavical vein, brachiocephalic vein and superior vena cava was assessed by vascular ultrasound. Collected were data on age, gender, ultrafiltration volume, Kt/V, blood pressure, levels of hemoglobin, serum albumin, lipid, calcium, and phosphorus, and parathyroid hormone.Results The patients were given short- or long-term double lumen central venous catheters. Among them, 42 patients had the catheter placed into the right internal jugular vein, and 12 patients into the left internal jugular vein. Different degrees of central venous thrombosis were found in 33 patients (61.1%). The prevalence of thrombosis in the jugular vein, brachiocephalic vein, subclavical vein and superior vena cava was 61.1% (33/54), 44.4% (24/54), 16.7% (9/54) and 5.6% (3/54), respectively. Among the 33 HD patients with central venous thrombosis, the percentages for one, two, three and four affected veins were 27.3% (9/33), 45.4% (15/33), 18.2% (6/33) and 9.1% (3/33), respectively. Twelve (12/33, 36.4%) of the 33 HD patients with central venous thrombosis had clinical symptoms. Nine patients (27.3%) had edema of the upper extremity and 3 (9.1%) had new-onset symptoms of pulmonary embolism such as cough, chest distress and short breath. The incidences of diabetes mellitus and malignant tumor and levels of lipoprotein a and homocysteic acid were significantly higher in the HD patients with central venous thrombosis than in those without

  1. Portal Vein Thrombosis

    Directory of Open Access Journals (Sweden)

    Hakan Demirci

    2016-01-01

    Full Text Available Portal vein thrombosis is an important cause of presinusoidal portal hypertension. Portal vein thrombosis commonly occurs in patient with cirrhosis, malignancy and prothrombotic states. Patients with acute portal vein thrombosis have immediate onset. Patients with chronic portal vein thrombosis have developed portal hypertension and cavernous portal transformation. Portal vein thrombosis is diagnosed with doppler ultrasound, computed tomography and magnetic resonance imaging. Therapy with low molecular weight heparin achieves recanalization in more than half of acute cases.

  2. Endovascular recanalization of superior vena cava,brachiocephalic, and subclavian venous occlusions caused by nonmalignant lesions

    Institute of Scientific and Technical Information of China (English)

    YE Meng; SHI Ya-xue; HUANG Xiao-zhong; ZHAO Yi-ping; ZHANG Hao; ZHANG Ji-wei

    2012-01-01

    Background Endovascular recanalization (EVR) is becoming the primary therapy for patients with central venous (brachiocephalic,subclavian,and superior vena cava) occlusion (CVO) caused by benign etiology.In this study,we retrospectively analyzed our experience in using EVR to treat benign CVO in 10 patients between April 2005 and September 2010.Methods The mean age of the patients was 65.3 years,2/10 cases were female,and the origin of cause of CVO in 7/10 cases was the hemodialysis access in the upper extremity.The patients were treated with primary stent placement and evaluated with immediate technical success rate and post-interventional patency rate after the procedure.Results Eight patients were treated successfully with stent placement and experienced symptomatic relief immediately.No technical complications were observed during EVR treatment.Patients were followed up by ultrasonography and venography.Median follow-up was 13 months,Three patients required secondary procedures to maintain patency.Conclusions EVR is an effective and safe treatment in patients with benign CVO.It provides immediate symptom relief and maintains a continuous access for hemodialysis.

  3. Reconstruction of the left-sided brachiocephalic trunk after vascular ring operation in left-handed child with Kommerell's diverticulum.

    Science.gov (United States)

    Haponiuk, Ireneusz; Paczkowski, Konrad; Chojnicki, Maciej; Jaworski, Radosław; Steffens, Mariusz; Szofer-Sendrowska, Aneta; Kwaśniak, Ewelina; Zieliński, Jacek; Gierat-Haponiuk, Katarzyna

    2013-01-01

    We report a case of a 2-year-old girl with prenatal diagnosis of vascular ring composed of a right-sided aortic arch, a left ligamentum arteriosum, and a left subclavian artery (arteria lusoria sin) originating from a retroesophageal Kommerell's diverticulum, who was referred for surgery with symptoms related to local compression - severe dysphagia and respiratory disorders. Through the left posterolateral thoracotomy, a ligamentum arteriosum between the Kommerell's diverticulum and the left pulmonary artery was divided and because of left-handedness of the child a brachiocephalic trunk was reconstructed in the fashion of anastomosis of the left subclavian artery and the left common carotid artery, originating from the ascending aorta.

  4. Endovascular procedures in the treatment of obstructive lesions of brachiocephalic arteries

    Directory of Open Access Journals (Sweden)

    Sagić Dragan

    2002-01-01

    Full Text Available Background. To assess the early effects, possible risks, and long term results of percutaneous transluminal angioplasty (PTA of brachiocephalic trunk (BT and subclavian arteries (SA. Methods. During the period of 11 years, in 92 patients (57 males - 62%, mean age 53,5 ± 7,8 years 93 PTA of SA/BT were performed; 70 (75% lesions were stenosis, while 23 (25% lesions were occlusions with mean diameter stenosis percent of 83,1 ± 6,2%. Clinical indications were: vertebrobasilar insufficiency (n=57, upper limb ischemia (n=40, coronary steal syndrome (n=4 and scheduled aorto-coronary bypass, using internal thoracic artery (ITA (n=4 asymptomatic patients. Mean lesion length was 22 ± 8 mm. Results. Eighty one (87% out of 93 lesions were successfully dilated; all of 12 (13% failures were due to unsuccessful recanalisation of occluded arteries. In 10 patients 10 stents were implanted (2 in BT and 8 in left SA. There were 6 (6.5% procedural complications: 1 dissection, 1 thrombosis of the left SA, transient ischemic attack in 2 patients, and 2 cases of dislocation of atheromatous plaque from the right SA into the right common carotid artery. During the follow-up of 48 ± 3 months, 16 (20% restenoses were treated by PTA (n=7 or operatively (n=9. Primary and secondary patency for all lesions treated during 11 years was 87% and 80%, respectively (stenosis: 97% and 89%; occlusions: 58% and 58%. Conclusion. PTA with or without stenting was relatively simple, efficient and safe procedure. It required short hospitalization with low treatment costs. If any of suboptimal results or chronic occlusions were present, the implantation of endovascular stents should have been considered.

  5. Portal Vein Thrombosis

    Directory of Open Access Journals (Sweden)

    Ronny Cohen

    2015-01-01

    Full Text Available Portal vein thrombosis (PVT is the blockage or narrowing of the portal vein by a thrombus. It is relatively rare and has been linked with the presence of an underlying liver disease or prothrombotic disorders. We present a case of a young male who presented with vague abdominal symptoms for approximately one week. Imaging revealed the presence of multiple nonocclusive thrombi involving the right portal vein, the splenic vein, and the left renal vein, as well as complete occlusion of the left portal vein and the superior mesenteric vein. We discuss pathogenesis, clinical presentation, and management of both acute and chronic thrombosis. The presence of PVT should be considered as a clue for prothrombotic disorders, liver disease, and other local and general factors that must be carefully investigated. It is hoped that this case report will help increase awareness of the complexity associated with portal vein thrombosis among the medical community.

  6. Focus on Varicose Veins

    Science.gov (United States)

    ... smaller than varicose veins and may cause symptoms. Spider veins typ - ically do not cause symptoms, and treatment for these is frequently cosmetic unless symptoms are present. Vein problems are among the most common chronic conditions in North America. In fact, more people lose work time from ...

  7. [Comparative assessment of immediate outcomes of surgical treatment of patients with coronary artery disease and lesion of the brachiocephalic arteries].

    Science.gov (United States)

    Drozhzhin, E V; Ibragimov, O R; Koval'chuk, D N; Efanov, Iu M; Zor'kin, A A; Ibragimova, E A; Urvantseva, I A

    2014-01-01

    From 2000 to 2011, a total of 52 patients with combined atherosclerotic lesions of the coronary and brachiocephalic arteries were subjected to a single-stage operation. Depending on the type of operative intervention, all patients were subdivided into two groups: Group One comprising 13 patients who underwent coronary artery bypass grafting (CABG) in a combination with simultaneous stenting of the internal carotid artery, and Group Two consisting of 39 patients subjected to CABG with simultaneous carotid endarterectomy. Assessing the intraoperative parameters revealed that in Group One patients the average duration of operations was significantly lower (179.6±6.4 minutes versus 273.2±5.6 minutes in Group Two, partery with the development of intestinal gangrene and peritonitis. In the structure of hospital complications cardiac insufficiency was prevalent (23.1% and 59.0% for Groups One and Group Two patients, respectively, pcoronary and brachiocephalic arteries makes it possible to increase the overall survival rate in patients suffering this disease and to decrease the incidence rate of ischaemic impairments of the coronary and cerebral circulation. The hybrid method of treatment on arteries of various vascular basins may be an alternative to carotid endarterectomy and CABG, especially in patients running high surgical risk.

  8. [Right ovarian vein syndrome].

    Science.gov (United States)

    Arvis, G

    1985-01-01

    Right ovarian vein syndrome is revealed in pregnancy by right lumbar pains, and even by nephritic colics. It results from a congenital malposition of the right ovarian vein, which presses the right ureter on the external iliac artery. Diagnosis is by intravenous urography and retrograde ureteral pyelography. If pain persists despite treatment by analgesics, it may be necessary to place a double-J catheter, and to operate after delivery to ligate the ovarian vein.

  9. Postpartum renal vein thrombosis.

    Science.gov (United States)

    Rubens, D; Sterns, R H; Segal, A J

    1985-01-01

    Renal vein thrombosis in adults is usually a complication of the nephrotic syndrome. Rarely, it has been reported in nonnephrotic women postpartum. The thrombosis may be a complication of the hypercoagulable state associated with both the nephrotic syndrome and pregnancy. Two postpartum patients with renal vein thrombosis and no prior history of renal disease are reported here. Neither patient had heavy proteinuria. In both cases, pyelonephritis was suspected clinically and the diagnosis of renal vein thrombosis was first suggested and confirmed by radiologic examination. Renal vein thrombosis should be considered in women presenting postpartum with flank pain.

  10. What Causes Varicose Veins?

    Science.gov (United States)

    ... blood flow, and thin, stretched walls. The middle image shows where varicose veins might appear in a leg. Figure A shows ... blood flow, and thin, stretched walls. The middle image shows where varicose veins might appear in a leg. Older age or ...

  11. Congenital preduodenal portal vein

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Sang Jin; Hwang, Mi Soo; Huh, Young Soo; Park, Bok Hwan [College of Medicine, Youngnam University, Gyeongsan (Korea, Republic of)

    1991-03-15

    Congenital preduodenal portal vein, first reported by Knight in 1921, is an extremely rare congenital anomaly in which the portal vein passes anteriorly to the duodenum rather than posteriorly in its normal location. It is of surgical significance because it may cause difficulties in operations involving the gall bladder, biliary duct, or duodenum. Recently, we experienced 2 cases of preduodenal portal vein. One was found during surgical exploration for the diagnosis and correction of malrotation of the bowels and the other in a 3 day-old male newborn associated with dextrocardia, situs inversus, and duodenal obstruction by diaphragm. We report these 2 cases with a review of the literature.

  12. Umbilical and portal vein calcification following umbilical vein catheterization

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, K.; Fendel, H.; Hartl, M.

    1989-07-01

    Calcifications of the umbilical vein and intrahepatic branches of the portal vein developed in a newborn who had inserted an umbilical vein catheter for 11 days postnatally. The calcified intrahepatic portal veins can still be demonstrated sonographically at the age of three years, whereby these calcifications were no longer detectable radiologically. (orig.).

  13. Deep vein thrombosis.

    Science.gov (United States)

    Bandyopadhyay, Gargi; Roy, Subesha Basu; Haldar, Swaraj; Bhattacharya, Rabindra

    2010-12-01

    Occlusive clot formation in the veins causes venous thrombosis, the site most common in the deep veins of leg, called deep vein thrombosis. The clot can block blood flow and when it breaks off, called an embolism which in turn can damage the vital organs. Venous thrombosis occurs via three mechanisms ie, Virchow's triad. The mechanisms are decreased flow rate of blood, damage to the blood vessel wall and an increased tendency of the blood to clot. There are several factors which can increase a person's risk for deep vein thrombosis. The symptoms of deep vein thrombosis in the legs are pain, swelling and redness of the part. One variety of venous thrombosis is phlegmasia alba dolens where the leg becomes pale and cool. Investigations include Doppler ultrasound examination of the limb, D-dimer blood test, plethysmography of the legs, x-rays to show vein in the affected area (venography). Hospitalisation is necessary in some cases with some risk factors. The mainstream of treatment is with anticoagulants, mostly low molecular weight heparin for 6 months. Deep venous thrombosis is a rising problem. Early diagnosis and treatment is associated with a good prognosis.

  14. Mesenteric vein thrombosis: CT identification

    Energy Technology Data Exchange (ETDEWEB)

    Rosen, A.; Korobkin, M.; Silverman, P.M.; Dunnick, N.R.; Kelvin, F.M.

    1984-07-01

    Superior mesenteric vein thrombosis was identified on computed tomographic scans in six patients. In each case, contrast-enhanced scans showed a high-density superior mesenteric vein wall surrounding a central filling defect. Four fo the six patients had isolated superior mesenteric vein thrombosis. A fifth patient had associated portal vein and splenic vein thrombosis, and the sixth patient had associated portal vein and inferior vena cava thrombosis. One of the six patients had acute ischemic bowel disease. The other five patients did not have acute ischemic bowel symptoms associated with their venous occlusion. This study defines the computed tomographic appearance of mesenteric vein thrombosis.

  15. Deep Vein Thrombosis

    Centers for Disease Control (CDC) Podcasts

    2012-04-05

    This podcast discusses the risk for deep vein thrombosis in long-distance travelers and ways to minimize that risk.  Created: 4/5/2012 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 4/5/2012.

  16. Retinal vein occlusion

    Science.gov (United States)

    ... decrease the risk of retinal vein occlusion. These measures include: Eating a low-fat diet Getting regular exercise Maintaining an ideal weight Not smoking Aspirin or other blood thinners may help prevent blockages in the other eye. Controlling diabetes may ...

  17. [Ovarian vein syndrome].

    Science.gov (United States)

    Ferrero Doria, R; Guzmán Valls, P; López Alba, J; Tomás Ros, M; Rico Galiano, J L; Fontana Compiano, L O

    1996-04-01

    The Ovarian Vein Syndrome has been the subject of controversy ever since first described as such by Clark in 1964. This is an uncommon entity within urologic sings and symptoms which appears as a recurrent nephritic colic coinciding with menstruation or during the immediately preceding days. The authors review a clinical case from our Urology Service, including some considerations on the case.

  18. The vein collar

    DEFF Research Database (Denmark)

    Lundgren, F; Schroeder, Torben Veith

    2012-01-01

    Randomized studies evaluating the effect of a vein collar at the distal anastomosis of PTFE-grafts show conflicting results. The study of the Joint Vascular Research Group (JVRG) of UK found improved primary patency while the Scandinavian Miller Collar Study (SCAMICOS) found neither any effect...

  19. Endovenous treatments for varicose veins

    NARCIS (Netherlands)

    R.R. van den Bos (Renate)

    2011-01-01

    textabstractEndovenous treatment is currently one of the most frequently used methods for treating varicose veins in the Netherlands. Varicose veins are tortuous and enlarged veins due to weakening in the vein’s wall or valves. They are manifestations of chronic venous disease (CVD), which may lead

  20. [The value of transendoscopy thermometry of gastric mucosa in the evaluation of blood flow in patients with osteoarthrosis and atherosclerosis by duplex ultrasound of extracranial brachiocephalic arteries].

    Science.gov (United States)

    Chopeĭ, I V; Bratasiuk, A M; Chopeĭ, O I; Myhovych, I I; Hanynets', P P; Kanchiĭ, V M; Bychko, M M; Madi, Iu Iu

    2014-01-01

    The pathogenesis of gastric mucosa lesions in elderly and senile people has many factors. It's based on contradiction between protective factors (mucus secretion, prostaglandins, bicarbonate, microcirculation, regeneration, etc.) and aggression factors (hydrochloric acid, pepsin, bile acids, pancreatic enzymes, bacteria). In addition, such important factors as neurohumoral disorders, nutrition and vascularization of the gastric mucosa have attached. The aim of the study was to evaluate the possible relations between microcirculation and data of gastric mucosa transendoscopy thermometry in elderly and senile patients with atherosclerosis confirmed by duplex ultrasound of extracranial brachiocephalic arteries.

  1. Varicosity of the pulmonary veins

    Energy Technology Data Exchange (ETDEWEB)

    Leicher-Dueber, A.; Lindner, P.; Schild, H.; Plewe, G.

    1986-04-01

    Varicosity of the pulmonary veins is a rare anomaly of the pulmonary vascular system. The varices do not usually change in size over years, do not cause symptoms and need no therapy. However, raised left atrial pressure can cause increase in the diameter of pulmonary vein varices. A case of lung vein varicosity in the right middle and upper lobe associated with coarctation of the aorta and an anomalous upper-middle lobe vein was observed over a period of 10 years. Increase in left atrial pressure (aortic and relative mitral regurgitation) led to enlargement of the pulmonary veins.

  2. 左右肘静脉注射对比剂对CT增强效果的影响%Effect of contrast medium by left or right side ulnar vein injection on the quality of enhanced CT images

    Institute of Scientific and Technical Information of China (English)

    陈辉; 张欣; 张新力; 褚爱鹏

    2011-01-01

    目的 比较左右肘静脉注射对比剂对CT增强效果的影响.方法 选择行胸部平扫加增强CT扫描患者165例,按分层抽样的方法分为青年组(60岁)70例;按照随机数字表法再分为左肘静脉注射组77例、右肘静脉注射组88例.所有病例均采用多层螺旋CT,扫描范围从肺尖至肺底,注射对比剂后60 s进行增强扫描.测量左头臂静脉横跨主动脉弓(或头臂动脉)前方与胸骨柄后缘之间的前后径线,对比分析其前后径线大小与CT增强效果的关系.结果 青年组与老年组左头臂静脉横跨主动脉弓(或头臂动脉)前方与胸骨柄后缘之间的前后径线比较差异有统计学意义(P0.05).左肘静脉注射组和右肘静脉注射组CT值分别为(106±24)、(149±29)HU,两组比较差异有统计学意义(P 60 years old ) 70 cases, and then patients were divided into two groups by random digits table with left side ulnar vein injection (left vein group, 77 cases ) and right side ulnar vein injection ( right vein group, 88 cases ) . Anteroposterior dimension between posterior border of manubrium sterni and anterior border of aortic arch (or brachiocephalic artery) where left brachiocephalic vein acrossing was measured and analyzed with relation of image quality. Results The anteroposterior dimension showed a statistical significant difference between young age group and elder age group(P 0.05). The CT value in left vein group and right vein group was (106 ?24 ), (149 ?29 ) HU respectively, and there was statistical difference between two groups (P<0.05). The good quality CT image in left vein group and right vein group was 61.0% (47/77),79.5% (70/88), and there was statistical difference (P <0.05). Conclusion CT contrast enhancement examination with right ulnar vein injection rather than left side may improve the quality of images by avoiding compression of left brachiocephalic vein in some patients .

  3. Retroaortic left renal vein joining the left common iliac vein

    Energy Technology Data Exchange (ETDEWEB)

    Brancatelli, G.; Galia, M.; Finazzo, M.; Sparacia, G.; Pardo, S.; Lagalla, R. [Dept. of Radiology ' ' P. Cignolini' ' , Univ. of Palermo (Italy)

    2000-11-01

    Retroaortic left renal vein joining the left common iliac vein is a rare congenital anomaly in the development of the inferior vena cava. To our knowledge, only one case has been reported in the literature; however, its imaging features have never been described. A 27-year-old male presented with a 1-year history of recurrent right flank pain, dysuria, hematuria, and fever (39 C). Computed tomography and MR venography showed a retroaortic left renal vein joining the left common iliac vein. We present the CT and MR venography findings and discuss their feasibility in showing this congenital anomaly. (orig.)

  4. Cephalic vein aneurysm.

    Science.gov (United States)

    Faraj, Walid; Selmo, Francesca; Hindi, Mia; Haddad, Fadi; Khalil, Ismail

    2007-11-01

    Cephalic vein aneurysms are rare malformations that may develop in any part of the vascular system, and their history, presentation, and management vary depending on their site. The etiology of venous aneurysms remains unclear, although several theories have been elaborated. Venous aneurysms are unusual vascular malformations that occur equally between the sexes and are seen at any age; they can present as either a painful or a painless subcutaneous mass. No serious complications have been reported from upper extremity venous aneurysms. Surgical excision is the definitive management for most of these. The case reported here presented with a painless and mobile, soft, subcutaneous mass that caused only cosmetic concern.

  5. A RARE CASE OF EXTENSIVE THROMBOSIS OF INFERIOR VENA CAVA, PORTAL VEIN, SPLENIC VEIN AND SUPERIOR MESENTRIC VEIN

    Directory of Open Access Journals (Sweden)

    Giridhar

    2015-03-01

    Full Text Available While the most common presentation of venous thromboembolic disease is deep vein thrombosis (DVT or pulmonary thromboembolism, rarer manifestations are thrombosis of jugular vein, cerebral sinus and inferior vena cava. Here we are presenting a rare case of inferior vena caval thrombosis with multiple thrombus in portal vein, splenic vein and superior mesenteric vein

  6. Historical Overview of Varicose Vein Surgery

    NARCIS (Netherlands)

    van den Bremer, Jephta; Moll, Frans L.

    2010-01-01

    Varicose veins are as old as Hippocrates. Varicose vein treatments come and go. Surgery for varicose vein disease is one of the commonest elective general surgical procedures. The history of varicose vein surgery has been traced. We note the first descriptions of varicose veins, and we particularly

  7. phenoVein - A software tool for leaf vein segmentation and analysis

    OpenAIRE

    Bühler, Jonas; Rishmawi, Louai; Pflugfelder, Daniel; Huber, Gregor; Scharr, Hanno; Hülskamp, Martin; Koornneef, Maarten; SCHURR, ULRICH; Jahnke, Siegfried

    2015-01-01

    phenoVein is a software tool dedicated to automated segmenting and analyzing images of leaf veins. It includes comfortable manual correction features. Advanced image filtering automatically emphasizes veins from background and compensates for local brightness inhomogeneities. Phenotypical leaf vein traits being calculated are total vein density, vein lengths and widths and skeleton graph statistics. For determination of vein widths, a model based vein edge estimation approach has been impleme...

  8. Agenesis of the iliac veins.

    Science.gov (United States)

    Thomas, M L; Posniak, H V

    1984-01-01

    Three case reports of patients with the rare anomaly of agenesis of the iliac veins are presented. It is emphasised that full phlebographic investigation should be carried out in such patients before surgical treatment is considered. It is pointed out that surgical ablation may exacerbate the symptoms of leg swelling and varicose veins for which the patients seek advice.

  9. Leiomyosarcoma of the renal vein

    Directory of Open Access Journals (Sweden)

    Lemos Gustavo C.

    2003-01-01

    Full Text Available Leiomyosarcoma of the renal vein is a rare tumor of complex diagnosis. We presented a case of renal vein leiomyosarcoma detected in a routine study. The primary treatment was complete surgical removal of the mass. In cases where surgical removal is not possible the prognosis is poor, with high rates of local recurrence and distant spread.

  10. Infrared imaging of varicose veins

    Science.gov (United States)

    Noordmans, Herke Jan; de Zeeuw, Raymond; Verdaasdonk, Ruud M.; Wittens, Cees H. A.

    2004-06-01

    It has been established that varicose veins are better visualized with infrared photography. As near-infrared films are nowadays hard to get and to develop in the digital world, we investigated the use of digital photography of varicose veins. Topics that are discussed are illumination setup, photography and digital image enhancement and analysis.

  11. 10-Minute Conultation Varicose veins

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    A 55 year old woman presents with a history of tortuous veins on both legs and a related ache towards the end of the day.She finds these veins unsightly and would like to know whether she can have them treated.

  12. [The possibilities for the transcranial monitoring of the blood flow in the circle of Willis arteries during operations on the brachiocephalic arteries and in heart operations].

    Science.gov (United States)

    Kuntsevich, G I; Kaĭdash, A N; Ter-Khachaturova, I E; Kovalevskaia, O A

    1995-01-01

    The paper gives the results of arterial blood flow monitoring in the circle of Willis via transcranial Doppler during 81 reparative operations on brachiocephalic arteries (including carotid endarterectomy from the internal carotid artery in 32 patients). Transcranial monitoring of blood flow supports the fact that there is a collateral reflow along the cerebral arteries during removal of the common carotid artery and that there is a relationship between the status of great arteries and arteries of Willis' circle. The paper also summaries the results of a comprehensive ultrasound study of 9 patients who have undergone reparative and plastic operations on the cardiac valves during extracorporeal circulation and general hypothermia. Blood flow was intraoperatively monitored in the arteries of the basis cerebri by using transcranial duplex scanning with colour Doppler flow mapping to evaluate not only hemodynamics, but also the embolic situation, as well as to check up how air was removed from the cardiac cavities by transesophageal echocardiography.

  13. Sagittal vein thrombosis caused by central vein catheter.

    Directory of Open Access Journals (Sweden)

    Feridoun Sabzi

    2015-03-01

    Full Text Available Cerebral venous thrombosis, including thrombosis of cerebral veins and major dural sinuses, is an uncommon disorder in the general population. However, it has a higher frequency among patients younger than 40 years of age, patients with thrombophilia, pregnant patients or those receiving hormonal contraceptive therapy or has foreign body such as catheter in their veins or arterial system. In this case report, we described clinical and radiological findings in a patient with protein C-S deficiency and malposition of central vein catheter.

  14. Vein matching using artificial neural network in vein authentication systems

    Science.gov (United States)

    Noori Hoshyar, Azadeh; Sulaiman, Riza

    2011-10-01

    Personal identification technology as security systems is developing rapidly. Traditional authentication modes like key; password; card are not safe enough because they could be stolen or easily forgotten. Biometric as developed technology has been applied to a wide range of systems. According to different researchers, vein biometric is a good candidate among other biometric traits such as fingerprint, hand geometry, voice, DNA and etc for authentication systems. Vein authentication systems can be designed by different methodologies. All the methodologies consist of matching stage which is too important for final verification of the system. Neural Network is an effective methodology for matching and recognizing individuals in authentication systems. Therefore, this paper explains and implements the Neural Network methodology for finger vein authentication system. Neural Network is trained in Matlab to match the vein features of authentication system. The Network simulation shows the quality of matching as 95% which is a good performance for authentication system matching.

  15. Neonatal renal vein thrombosis.

    Science.gov (United States)

    Brandão, Leonardo R; Simpson, Ewurabena A; Lau, Keith K

    2011-12-01

    Neonatal renal vein thrombosis (RVT) continues to pose significant challenges for pediatric hematologists and nephrologists. The precise mechanism for the onset and propagation of renal thrombosis within the neonatal population is unclear, but there is suggestion that acquired and/or inherited thrombophilia traits may increase the risk for renal thromboembolic disease during the newborn period. This review summarizes the most recent studies of neonatal RVT, examining its most common features, the prevalence of acquired and inherited prothrombotic risk factors among these patients, and evaluates their short and long term renal and thrombotic outcomes as they may relate to these risk factors. Although there is some consensus regarding the management of neonatal RVT, the most recent antithrombotic therapy guidelines for the management of childhood thrombosis do not provide a risk-based algorithm for the acute management of RVT among newborns with hereditary prothrombotic disorders. Whereas neonatal RVT is not a condition associated with a high mortality rate, it is associated with significant morbidity due to renal impairment. Recent evidence to evaluate the effects of heparin-based anticoagulation and thrombolytic therapy on the long term renal function of these patients has yielded conflicting results. Long term cohort studies and randomized trials may be helpful to clarify the impact of acute versus prolonged antithrombotic therapy for reducing the morbidity that is associated with neonatal RVT.

  16. A Vein Map Biometric System

    Directory of Open Access Journals (Sweden)

    Felix Fuentes

    2013-08-01

    Full Text Available There is increasing demand world-wide, from government agencies and the private sector for cutting-edge biometric security technology that is difficult to breach but userfriendly at the same time. Some of the older tools, such as fingerprint, retina and iris scanning, and facial recognition software have all been found to have flaws and often viewed negatively because of many cultural and hygienic issues associated with them. Comparatively, mapping veins as a human barcode, a new technology, has many advantages over older technologies. Specifically, reproducing a three-dimensional model of a human vein system is impossible to replicate. Vein map technology is distinctive because of its state-of-the-art sensors are only able to recognize vein patterns if hemoglobin is actively flowing through the person

  17. [Surgery of essential varicose veins].

    Science.gov (United States)

    Maraval, M

    1994-03-15

    Idiopathic varicose veins of the lower limbs are a frequent but benign disorder. Surgery is only a moment in the course of the disease. Although not the only treatment of essential varicose veins, surgery by an experienced team performing crossectomy, stripping by intussusception using a stripper, and phlebectomy gives fully satisfactory results, both to patient and to physician, in over 80% of cases. New techniques were recently developed that, at present, have not confirmed early hopes.

  18. Portal Vein Thrombosis in non cirrhotic patients

    NARCIS (Netherlands)

    M.C.W. Spaander (Manon)

    2010-01-01

    textabstractExtrahepatic portal vein thrombosis (EPVT) is the most common cause of portal hypertension in non- cirrhotic patients. EPVT has been defined as an obstruction of the extrahepatic portal vein with or without involvement of the intrahepatic portal veins. Although the portal vein accounts f

  19. Extrahepatic portal vein obstruction and portal vein thrombosis in special situations: Need for a new classification

    Directory of Open Access Journals (Sweden)

    Zeeshan A Wani

    2015-01-01

    Full Text Available Extrahepatic portal vein obstruction is a vascular disorder of liver, which results in obstruction and cavernomatous transformation of portal vein with or without the involvement of intrahepatic portal vein, splenic vein, or superior mesenteric vein. Portal vein obstruction due to chronic liver disease, neoplasm, or postsurgery is a separate entity and is not the same as extrahepatic portal vein obstruction. Patients with extrahepatic portal vein obstruction are generally young and belong mostly to Asian countries. It is therefore very important to define portal vein thrombosis as acute or chronic from management point of view. Portal vein thrombosis in certain situations such as liver transplant and postsurgical/liver transplant period is an evolving area and needs extensive research. There is a need for a new classification, which includes all areas of the entity. In the current review, the most recent literature of extrahepatic portal vein obstruction is reviewed and summarized.

  20. [Peculiarities of the course of arterial hypertension in patients with atherosclerotic stenoses of brachiocephalic arteries before and after surgery on carotid arteries].

    Science.gov (United States)

    Kosacheva, N B; Tuev, A V

    2013-01-01

    Study aim was to investigate relationship between atherosclerosis of carotid arteries (CA) and the presence of arterial hypertension (AH) and possibilities of correction of AH after surgery. We examined 70 patients with episodes of elevation of arterial pressure (AP) scheduled for surgical interventions on brachiocephalic arteries (BCA) because of CA stenoses (n=50, group 1) or anomalies of BCA development (n=20, group 2). Before operation patients of group 1 had higher mean AP than patients of group 2 (103.6+/-11.3 and 91.7+/-6.6 mm Hg, respectively, p=0.00007). This difference disappeared after surgery. In postoperative period in patients with CA stenoses levels of both systolic and diastolic AP decreased (from 145.1+/-14.7 to 135.6+/-12.3, p=0.02; and from 83.3+/-10.2 78.1+/-9.7 mm Hg, =0.02, respectively). In group 2 no significant AP reduction was observed. Thus AP elevation in patients with involvement of BCA to a considerable degree is caused by CA stenosis. Surgical treatment of these patients facilitates lowering of AP.

  1. Angiosarcoma of common iliac vein

    Science.gov (United States)

    Ibis, Kamuran; Usta, Ufuk; Cosar, Rusen; Ibis, Cem

    2015-01-01

    Angiosarcoma is a rare malignant tumour of endothelial cells. Primary angiosarcoma of venous origin is extremely rare, and has a very poor prognosis. A 63-year-old woman with retroperitoneal mass underwent en bloc resection on a part of iliac vein followed by adjuvant radiotherapy. No recurrence was detected during 3 years of follow-up. PMID:25596292

  2. Clinical studies on inferior right hepatic veins

    Institute of Scientific and Technical Information of China (English)

    Xue Xing; Hong Li; Wei-Guo Liu

    2007-01-01

    BACKGROUND:Many small veins are called accessory, short hepatic veins in addition to the right, middle and left hepatic veins. The size of these veins varied from a pinhole to 1 cm; the size of inferior right hepatic veins (IRHVs) is thicker than that of short hepatic veins or more than 1 cm occasionally. Adults have a higher incidence rate of the IRHV. DATA SOURCES:A literature search of the PubMed database was conducted and research articles were reviewed. RESULTS:The size of IRHVs is related to the size of the right hepatic vein, i.e. the larger the diameter of the right hepatic vein, the smaller the diameter of the IRHVs, and vice versa. The IRHVs are divided into superior, medial and inferior groups, separately named the superior, medial and inferior right hepatic veins according to the position of the IRHV entering the inferior vena cava. The superior right hepatic vein mainly drains the superior part of segmentⅦ, and the medial right hepatic vein drains the middle part of segmentⅦ. A thicker IRHV mainly drains segmentⅥ and the inferior part of segmentⅦ and a thinner IRHV drains the inferior part of segmentⅤ. CONCLUSIONS:The clinical signiifcance of these studies on IRHVs is varied: (1) Hepatic caudate lobe resection could be introduced after study on the veins of that lobe. (2) It is very important to identify the draining region of the IRHV for guiding hepatic segmentectomy. The postero-inferior area of the right lobe can be preserved along with the hypertrophic IRHV even if the entire main right hepatic vein is resected during segmentectomy ofⅦ andⅧwith right hepatic vein resection for patients with primary liver cancer. (3) The ligation of the major hepatic vein for the treatment of juxtahepatic vein injury is recommended because of severe hemorrhagic shock and dififculty in

  3. Common femoral vein reconstruction using internal jugular vein after blast injury.

    Science.gov (United States)

    Holt, Andrew M; West, Charles A; Davis, James A; Gilani, Ramyar; Askenasy, Eric

    2014-10-01

    Common femoral vein traumatic injuries are rare. Surgical management is controversial and by nature case specific. In this report, we present an unusual case of an isolated common femoral vein injury from a gunshot blast repaired with an interposition internal jugular vein bypass. To our knowledge, this is the first reported case of an isolated common femoral vein reconstructed in this manner.

  4. Who Is at Risk for Varicose Veins?

    Science.gov (United States)

    ... may raise your risk for varicose veins. The normal wear and tear of aging may cause the valves in your veins to weaken and not work well. Gender Women tend to get varicose veins more often than men. Hormonal changes that occur during puberty, pregnancy, and menopause (or ...

  5. Radiological aspects of portal vein embolization

    NARCIS (Netherlands)

    van Lienden, K.P.

    2012-01-01

    This thesis deals with liver regeneration after portal vein embolization (PVE) or portal vein ligation (PVL). Several aspects of these portal vein occlusion techniques are evaluated in clinical and experimental studies. In addition, the role of dynamic liver function tests and CT-volumetry in risk a

  6. Cephalic veins in coronary artery bypass surgery

    DEFF Research Database (Denmark)

    Licht, P; Jakobsen, Erik; Lerbjerg, G;

    1996-01-01

    Various alternative conduits for aortocoronary bypass grafting have been suggested when the saphenous vein quality is inadequate. During a 10-year period we have used the cephalic vein in 39 patients. Eighteen entered an angiographic follow-up study. A total of 31 arm vein grafts were used with 4...

  7. Reflux venous flow in dural sinus and internal jugular vein on 3D time-of-flight MR angiography

    Energy Technology Data Exchange (ETDEWEB)

    Jang, Jinhee; Kim, Bum-soo; Kim, Bom-yi; Choi, Hyun Seok; Jung, So-Lyung; Ahn, Kook-Jin; Byun, Jae Young [The Catholic University of Korea, Department of Radiology, Seoul St. Mary' s Hospital, School of Medicine, Seoul (Korea, Republic of)

    2013-10-15

    Reflux venous signal on the brain and neck time-of-flight magnetic resonance angiography (TOF MRA) is thought to be related to a compressed left brachiocephalic vein. This study is aimed to assess the prevalence of venous reflux flow in internal jugular vein (IJV), sigmoid sinus/transverse sinus (SS/TS), and inferior petrosal sinus (IPS) on the brain and neck TOF MRA and its pattern. From the radiology database, 3,475 patients (1,526 men, 1,949 women, age range 19-94, median age 62 years) with brain and neck standard 3D TOF MRA at 3 T and 1.5 T were identified. Rotational maximal intensity projection images of 3D TOF MRA were assessed for the presence of reflux flow in IJV, IPS, and SS/TS. Fifty-five patients (1.6 %) had reflux flow, all in the left side. It was more prevalent in females (n = 43/1,949, 2.2 %) than in males (n = 12/1,526, 0.8 %) (p = 0.001). The mean age of patients with reflux flow (66 years old) was older than those (60 years old) without reflux flow (p = 0.001). Three patients had arteriovenous shunt in the left arm for hemodialysis. Of the remaining 52 patients, reflux was seen on IJV in 35 patients (67.3 %). There were more patients with reflux flow seen on SS/TS (n = 34) than on IPS (n = 25). Venous reflux flow on TOF MRA is infrequently observed, and reflux pattern is variable. Because it is exclusively located in the left side, the reflux signal on TOF MRA could be an alarm for an undesirable candidate for a contrast injection on the left side for contrast-enhanced imaging study. (orig.)

  8. A New Multimodal Biometric System Based on Finger Vein and Hand Vein Recognition

    OpenAIRE

    Randa Boukhris Trabelsi; Alima Damak Masmoudi; Dorra Sellami Masmoudi

    2013-01-01

    As a reliable and robust biological characteristic, the vein pattern increases more and more the progress in biometric researches. Generally, it was shown that single biometric modality recognition is not able to meet high performances. In this paper, we propose a new multimodal biometric system based on fusion of both hand vein and finger vein modalities. For finger vein recognition, we employ the Monogenic Local Binary Pattern (MLBP), and for hand vein recognitionan Improved Gaussian Matche...

  9. Deep vein thrombosis in pregnancy.

    Science.gov (United States)

    Colman-Brochu, Stephanie

    2004-01-01

    This article provides a review of the incidence, pathophysiology, and treatment of deep vein thrombosis (DVT) in pregnancy, a rare but serious complication of pregnancy. The incidence of DVT in pregnancy varies widely, but it is a leading cause of maternal morbidity in both the United States and the United Kingdom. Risk factors during pregnancy include prolonged bed rest or immobility, pelvic or leg trauma, and obesity. Additional risk factors are preeclampsia, Cesarean section, instrument-assisted delivery, hemorrhage, multiparity, varicose veins, a previous history of a thromboembolic event, and hereditary or acquired thrombophilias such as Factor V Leiden. Heparin is the anticoagulant of choice to treat active thromboembolic disease or to administer for thromboprophylaxis, but low molecular-weight heparin is being used with increasing frequency in the pregnant woman. Perinatal nurses should be aware of the symptoms, diagnostic tools, and treatment options available to manage active thrombosis during pregnancy and in the intrapartum and postpartum periods.

  10. FINGER-VEIN RECOGNITION SYSTEMS

    Directory of Open Access Journals (Sweden)

    A.Haritha Deepthi

    2015-10-01

    Full Text Available As the Person‟s/Organization‟s Private information‟s are becoming very easy to access, the demand for a Simple, Convenient, Efficient, and a highly Securable Authentication System has been increased. In considering these requirements for data Protection, Biometrics, which uses human physiological or behavioral system for personal Identification has been found as a solution for these difficulties. However most of the biometric systems have high complexity in both time and space. So we are going to use a Real time Finger-Vein recognition System for authentication purposes. In this paper we had implemented the Finger Vein Recognition concept using MATLAB R2013a. The features used are Lacunarity Distance, Blanket Dimension distance. This has more accuracy when compared to conventional methods.

  11. Management of varicose veins and venous insufficiency.

    Science.gov (United States)

    Hamdan, Allen

    2012-12-26

    Chronic venous disease, reviewed herein, is manifested by a spectrum of signs and symptoms, including cosmetic spider veins, asymptomatic varicosities, large painful varicose veins, edema, hyperpigmentation and lipodermatosclerosis of skin, and ulceration. However, there is no definitive stepwise progression from spider veins to ulcers and, in fact, severe skin complications of varicose veins, even when extensive, are not guaranteed. Treatment options range from conservative (eg, medications, compression stockings, lifestyle changes) to minimally invasive (eg, sclerotherapy or endoluminal ablation), invasive (surgical techniques), and hybrid (combination of ≥1 therapies). Ms L, a 68-year-old woman with varicose veins, is presented. She has had vein problems over the course of her life. Her varicose veins recurred after initial treatment, and she is now seeking guidance regarding her current treatment options.

  12. [ENDOVENOUS LASER TREATMENT FOR VARICOSE VEINS].

    Science.gov (United States)

    Tezuka, Masahiro; Kanaoka, Yuji; Ohki, Takao

    2015-05-01

    Varicose veins are a common condition attecting approximately 10 million patients in Japan. The main cause of varicose veins is reflux of the saphenous vein, and conventional treatment for several decades was stripping the affected saphenous vein and phlebectomy. Endovenous laser treatment (EVLT) is a less-invasive treatment method in which the saphenous vein is ablated with a laser under local anesthesia. EVLT has been approved by the Japanese Ministry of Health, Labor and Welfare since 2011, and we have performed EVLT on 5,160 legs with saphenous insufficiency with no severe complications including deep vein thrombosis except for one case of arteriovenous fistula. EVLT appears to be a safe, effective treatment option for varicose veins with saphenous insufficiency.

  13. Mortality after portal vein embolization

    Science.gov (United States)

    Lee, Eung Chang; Park, Sang-Jae; Han, Sung-Sik; Park, Hyeong Min; Lee, Seung Duk; Kim, Seong Hoon; Lee, In Joon; Kim, Hyun Beom

    2017-01-01

    Abstract Portal vein embolization (PVE) is increasingly performed worldwide to reduce the possibility of liver failure after extended hepatectomy, by inducing future liver remnant (FLR) hypertrophy and atrophy of the liver planned for resection. The procedure is known to be very safe and to have few procedure-related complications. In this study, we described 2 elderly patients with Bismuth–Corlette type IV Klatskin tumor who underwent right trisectional PVE involving the embolization of the right portal vein, the left medial sectional portal branch, and caudate portal vein. Within 1 week after PVE, patients went into sepsis combined with bile leak and died within 1 month. Sepsis can cause acute liver failure in patients with chronic liver disease. In this study, the common patient characteristics other than sepsis, that is, trisectional PVE; chronic alcoholism; aged >65 years; heart-related comorbidity; and elevated serum total bilirubin (TB) level (7.0 mg/dL) at the time of the PVE procedure in 1 patient, and concurrent biliary procedure, that is, percutaneous transhepatic biliary drainage in the other patient might have affected the outcomes of PVE. These cases highlight that PVE is not a safe procedure. Care should be taken to minimize the occurrence of infectious events because sepsis following PVE can cause acute liver failure. Additionally, prior to performing PVE, the extent of PVE, chronic alcohol consumption, age, comorbidity, long-lasting jaundice, concurrent biliary procedure, etc. should be considered for patient safety. PMID:28178122

  14. Undivided Retromandibular Vein Continuing As External Jugular Vein With Facial Vein Draining Into It : An Anatomical Variation

    Directory of Open Access Journals (Sweden)

    Shahnaz Choudhary, Ashwani K Sharma, Harbans Singh

    2010-10-01

    Full Text Available Despite the fact that the blueprint of the whole body is unravelled, faultlessly during the growth anddevelopment of an animal; but amazingly variations do occur. During routine dissection of head and neckin a middle aged cadaver in the Post Graduate Department of Anatomy of this medical college, we foundvariation in the formation of external jugular vein on both sides, which was formed by the continuation ofundivided trunk of retromandibular vein. The facial vein and posterior auricular vein were the tributaries ofexternal jugular vein. The sound anatomical knowledge of variations of the veins of head and neck isessential to the success of surgical procedures. The embryological evaluation of the above anomaly wasdone and compared with the available literature which showed that the observed variation was rare

  15. The umbilical and paraumbilical veins of man.

    Science.gov (United States)

    Martin, B F; Tudor, R G

    1980-03-01

    During its transit through the umbilicus structural changes occur in the thick wall of the extra-abdominal segment of the umbilical vein whereby the components of the intra-abdominal segment acquire an essentially longitudinal direction and become arranged in fibro-elastic and fibro-muscular zones. The vein lumen becomes largely obliterated by asymmetrical proliferation of loose subendothelial conective tissue. The latter forms a new inner zone within which a small segment of the lumen persists in an eccentric position. This residual lumen transmits blood to the portal system from paraumbilical and systemic sources, and is retained in the upper part of the vein, even in old age. A similar process of lumen closure is observed in the ductus venosus. In early childhood the lower third of the vein undergoes breakdown, with fatty infiltration, resulting in its complete division into vascular fibro-elastic strands, and in old age some breakdown occurs in the outermost part of the wall of the upper two thirds. The paraumbilical veins are thick-walled and of similar structure to the umbilical vein. Together they constitute an accessory portal system which is confined between the layers of the falciform ligament and is in communication with the veins of the ventral abdominal wall. The constituents form an ascending series, namely, Burow's veins, the umbilical vein, and Sappey's inferior and superior veins. The main channel of Sappey's inferior veins may be the remnant of the right umbilical vein since it communicates with the right rectus sheath and often communicates directly with the portal system within the right lobe of the liver. The results are of significance in relation to clinical usage of the umbilical vein.

  16. Palm Vein Verification Using Gabor Filter

    Directory of Open Access Journals (Sweden)

    Ali Mohsin Al-Juboori

    2013-01-01

    Full Text Available Palm vein authentication is one of the modern biometric techniques, which employs the vein pattern in the human palm to verify the person. The merits of palm vein on classical biometric (e.g. fingerprint, iris, face are a low risk of falsification, difficulty of duplicated and stability. In this research, a new method is proposed for personal verification based on palm vein features. In the propose method, the palm vein images are firstly enhanced and then the features are extracted by using bank of Gabor filters. Then Fisher Discriminated Analysis (FDA is used to reduce the dimension of the features vectors. For vein pattern verification, this work uses Nearest Neighbors method. The EER of the proposed method is 0.2335%.

  17. Preduodenal portal vein: its surgical significance.

    Science.gov (United States)

    Makey, D A; Bowen, J C

    1978-11-01

    Preduodenal portal vein is a rare anatomical variant which may be one of many anomalies in the neonate with duodenal "atresia." Preduodenal portal vein also may be an occasional finding in an adult undergoing biliary, gastric, or pancreatic surgery. Awareness and recognition of the anomaly are essential for the avoidance of injury during such operations. We report here a symptomless patient whose preduodenal portal vein was discovered at cholecystectomy.

  18. Small hepatic veins Budd-Chiari syndrome.

    Science.gov (United States)

    Riggio, Oliviero; Marzano, Chiara; Papa, Alessia; Pasquale, Chiara; Gasperini, Maria Ludovica; Gigante, Antonietta; Valla, Dominique Charles; Plessier, Aurélie; Amoroso, Antonio

    2014-05-01

    Budd-Chiari syndrome is a rare disorder characterized by hepatic venous outflow obstruction at any level from the small hepatic veins to the atrio-caval junction, in the absence of heart failure or constrictive pericarditis. Various imaging modalities are available for investigating the gross hepatic vascular anatomy but there are rare forms of this disease where the obstruction is limited to the small intrahepatic veins, with normal appearance of the large hepatic veins at imaging. In this cases only a liver biopsy can demonstrate the presence of a small vessels outflow block. We report two cases of small hepatic veins Budd-Chiari syndrome.

  19. Sonographic Findings in Fetal Renal Vein Thrombosis.

    Science.gov (United States)

    Gerber, Rebecca E; Bromley, Bryann; Benson, Carol B; Frates, Mary C

    2015-08-01

    We present the sonographic findings of fetal renal vein thrombosis in a series of 6 patients. The mean gestational age at diagnosis was 31.2 weeks. Four cases were unilateral, and 2 were bilateral. The most common findings were renal enlargement and intrarenal vascular calcifications, followed by increased renal parenchymal echogenicity. Inferior vena cava thrombosis was found in 4 patients and common iliac vein thrombosis in 2. Fetal renal vein thrombosis is an uncommon diagnosis with characteristic sonographic findings. The presence of these findings should prompt Doppler interrogation of the renal vein and inferior vena cava to confirm the diagnosis.

  20. Leiomyosarcoma of the external iliac vein.

    Science.gov (United States)

    Fukuda, Wakako; Taniguchi, Satoshi; Fukuda, Ikuo

    2012-06-01

    Leiomyosarcoma of the iliac vein is an uncommon tumor. We report a case of a 63-year-old Japanese woman with leiomyosarcoma of the right external iliac vein. The patient complained of right inguinal pain and swelling. Computed tomography demonstrated a mass surrounding the right external iliac artery and vein. Metastases in the lungs and liver were found. Complete resection of the tumor along with the involved vessels was performed. Polytetrafluoroethylene grafts were used to reconstruct the vessels. Pathological examination revealed leiomyosarcoma of the external iliac vein. Although the prognosis of leiomyosarcoma is poor, en bloc tumor resection is the treatment of choice.

  1. phenoVein - A tool for leaf vein segmentation and analysis

    OpenAIRE

    Bühler, J.; Rishmawi, L.; Pflugfelder, D.; Huber, G; Scharr, H.; Hülskamp, M; Koornneef, M.; Schurr, U; Jahnke, S.

    2015-01-01

    Precise measurements of leaf vein traits are an important aspect of plant phenotyping for ecological and genetic research. Here, we present a powerful and user-friendly image analysis tool named phenoVein. It is dedicated to automated segmenting and analyzing of leaf veins in images acquired with different imaging modalities (microscope, macrophotography, etc.), including options for comfortable manual correction. Advanced image filtering emphasizes veins from the background and compensates f...

  2. Endovenous laser therapy for varicose veins

    NARCIS (Netherlands)

    Disselhoff, B.C.V.M.

    2008-01-01

    This thesis describes the technique of endovenous laser ablation and the outcome of various series of patients with varicose veins due to reflux in the great saphenous vein, treated by endovenous laser ablation or cryostripping in a single-centre study. This study has shown clear advantages of endov

  3. PORTAL VEIN THROMBOSIS-ULTRASOUND IMAGING

    Directory of Open Access Journals (Sweden)

    Trajkovska Meri

    2016-07-01

    Full Text Available Portal venous system, apart from the main portal vein, includes its tributaries: superior and inferior mesenteric vein, as well as splenic vein, so the term portal venous thrombosis encompasses a broad spectrum of pathological conditions. Usually, one or more causative factors can be recognized, either local endothelial/ flow disturbances, or systemic inherited /acquired conditions. Portal vein thrombosis can be associated with benign or malignant disorders. Weather we are speaking about acute or chronic thrombosis, the clinical presentation is different. Acute thrombosis can be presented in a wide range, from mild abdominal discomfort to a state of intestinal ischemia and life-threatening infarction. Chronic thrombosis is usually recognized when variceal bleeding or other symptoms of portal hypertension express. Fast and accurate diagnosis sometimes is a life-saving procedure, especially in acute vascular alterations. Recently, due to the improvement of imaging procedures the number of patients with diagnosed portal vein thrombosis is increasingly growing. With a negative predictive value of 98% color Doppler ultrasound is considered as imaging modality of choice in detecting portal vein thrombosis. Based on large studies it is presumed that overall risk of getting portal vein thrombosis during lifetime is 1% in general population, but much bigger 5%-15% in cirrhotic patients. Existence of specific ultrasound criteria, if fulfilled, has ensured that diagnosis of portal vein thrombosis is fast and non-invasive. Procedure is convenient for the patient and healthcare providers, and above all, allows prompt treatment preventing further deterioration.

  4. Generating and analyzing synthetic finger vein images

    NARCIS (Netherlands)

    Hillerström, Fieke; Kumar, Ajay; Veldhuis, Raymond

    2014-01-01

    Abstract: The finger-vein biometric offers higher degree of security, personal privacy and strong anti-spoofing capabilities than most other biometric modalities employed today. Emerging privacy concerns with the database acquisition and lack of availability of large scale finger-vein database have

  5. Improving the management of varicose veins.

    Science.gov (United States)

    Onida, Sarah; Lane, Tristan R A; Davies, Alun H

    2013-01-01

    Up to 30% of the UK population are affected by varicose veins. They are a manifestation of increased venous pressure in the lower limb caused by impaired venous return. Primary varicosities result from poor drainage from the superficial to the deep venous system. Secondary varicosities arise as a result of underlying pathology impeding venous drainage, such as deep venous thrombosis or increased intra-abdominal pressure caused by a mass, pregnancy or obesity. Patients with bleeding varicose veins should be referred to a vascular service immediately. Referral is also indicated in the following cases: symptomatic primary or recurrent varicose veins; lower limb skin changes thought to be caused by chronic venous insufficiency; superficial vein thrombosis and suspected venous incompetence; a venous leg ulcer or healed venous leg ulcer. Imaging is crucial in the assessment of the superficial and deep venous system to enable assessment of venous competence. The gold standard imaging technique is colour duplex ultrasonography. Duplex ultrasound should be used to confirm the diagnosis of varicose veins and the extent of truncal reflux, and to plan treatment for patients with suspected primary or recurrent varicose veins. Superficial vein ligation, phlebectomy and stripping have been the mainstay of treatment. In recent years, new techniques have been developed that are minimally invasive, enabling treatment of superficial venous incompetence with reduced morbidity. NICE recommends that endothermal ablation, in the form of radiofrequency or laser treatment, should be offered as treatment for patients with confirmed varicose veins and truncal reflux.

  6. Assessment and management of patients with varicose veins.

    Science.gov (United States)

    Allen, Louise

    Varicose veins are enlarged superficial veins found in the legs. This article explores the anatomy and physiology of the venous system to assist nurses to assess, manage and treat patients with varicose veins.

  7. Radiological features of azygous vein aneurysm.

    Science.gov (United States)

    Choudhary, Arabinda Kumar; Moore, Michael

    2014-04-01

    Mediastinal masses are most commonly associated with malignancy. Azygous vein aneurysm is a very rare differential diagnosis of mediastinal mass. We report here three cases of azygous vein aneurysm including children and adult patients. In the pediatric patient it was further complicated by thrombosis and secondary pulmonary embolism. We describe the radiological features on CXR, MRI, CT, PET-CT, US and angiogram and their differential diagnosis. Imaging findings of continuity with azygous vein, layering of contrast medium on enhanced CT and dynamic MRA showing filling of the mass at the same time as the azygous vein without prior enhancement will be strongly suggestive of azygous vein aneurysm with transtracheal ultrasound being the definitive test in these patients. It is important to keep a vascular origin mass in the differential diagnosis of mediastinal masses. Also, in young healthy patients with pulmonary embolism, a vascular etiology such as azygous vein aneurysm should be carefully evaluated. This article will help the clinicians to learn about the imaging features of azygous vein aneurysm on different imaging modalities.

  8. Portal vein gas in emergency surgery

    Directory of Open Access Journals (Sweden)

    Mahmood Hind

    2008-07-01

    Full Text Available Abstract Background Portal vein gas is an ominous radiological sign, which indicates a serious gastrointestinal problem in the majority of patients. Many causes have been identified and the most important was bowel ischemia and mesenteric vascular accident. The presentation of patients is varied and the diagnosis of the underlying problem depends mainly on the radiological findings and clinical signs. The aim of this article is to show the clinical importance of portal vein gas and its management in emergency surgery. Methods A computerised search was made of the Medline for publications discussing portal vein gas through March 2008. Sixty articles were identified and selected for this review because of their relevance. These articles cover a period from 1975–2008. Results Two hundreds and seventy-five patients with gas in the portal venous system were reported. The commonest cause for portal vein gas was bowel ischemia and mesenteric vascular pathology (61.44%. This was followed by inflammation of the gastrointestinal tract (16.26%, obstruction and dilatation (9.03%, sepsis (6.6%, iatrogenic injury and trauma (3.01% and cancer (1.8%. Idiopathic portal vein gas was also reported (1.8%. Conclusion Portal vein gas is a diagnostic sign, which indicates a serious intra-abdominal pathology requiring emergency surgery in the majority of patients. Portal vein gas due to simple and benign cause can be treated conservatively. Correlation between clinical and diagnostic findings is important to set the management plan.

  9. [Results of duplex scanning of brachiocephalic arteries and estimation of the lipid spectrum in coronary heart disease and arterial hypertension in indigenous and alien population of Yamalo-Nenetsky Autonomous District].

    Science.gov (United States)

    Gapon, L I; Sereda, T V; Leont'eva, A V; Gul'tiaeva, E P

    2013-01-01

    The work aimed at studying atherosclerotic lesions in brachiocephalic arteries and lipid spectrum in coronary heart disease (CHD) and arterial hypertension (AH) in indigenous and alien population of Yamalo-Nenetsky Autonomous District. It included 200 patients with CHD and AH (men and women aged 21-55 years, mean 48.2 +/- 07 yr). They were allocated to indigenous and alien groups (100 persons each). The patients matched for age and sex were examined by duplex scanning based at an outpatient facility (Salekhard). The indigenous population showed more pronounced thickening of the intima-media complex (IMC) of the common carotid artery (p = 0.001) and more frequent lesions of the main head arteries with stenosis of different severity (especially in internal carotid arteries). Total cholesterol, LDLP and atherogenicity index were similar in both groups and higher than normal. Indigenous subjects had less atherogenic structure of the lipid spectrum due to lower TG and VLDLP but higher HDLP levels.

  10. Ventriculoatrial shunting via the azygos vein.

    Science.gov (United States)

    Balasubramaniam, C; DuBois, J J; Laurent, J P; Pokorny, W J; Harberg, F J; Cheek, W R

    1990-06-01

    The treatment of hydrocephalus has evolved through many stages but the "cure" is still elusive. It is not unusual for the neurosurgeon to find that the commonly used routes for catheter placement or sites for drainage of cerebrospinal fluid (CSF) cannot be employed. The azygos vein was used to gain access to the right atrium when the CSF could not be drained into the peritoneal cavity, nor could the neck veins be used to place the catheter into the right atrium. The azygos vein is a convenient and safe route to reach the right atrium in selected patients.

  11. [FEATURES LIVER TRANSPLANTATION IN PORTAL VEIN THROMBOSIS].

    Science.gov (United States)

    Abbasov, P A

    2015-07-01

    In 2012 - 2013 years in 265 patients for liver transplantation was performed, including in 224 (84.5%)--from a living donor, in 41 (15.5%)--from the dead body. Using a Foley catheter to stop bleeding, and the imposition of vascular sutures during endovenectomy in portal vein thrombosis (PVT) and its possible damage under all conditions. In particular, PVT IV degree (Grade IV) in order to restore blood flow in the graft using the left gastric and renal vein is an alternative, if they are cryopreserved vein may be suitably used.

  12. Portal Decompression Using the Inferior Mesenteric Vein

    Directory of Open Access Journals (Sweden)

    Paolo Gorini

    1998-01-01

    Full Text Available We report five patients with variceal hemorrhage, in three cases secondary to diffuse thrombosis of the portal, superior mesenteric and splenic veins. Mesenteric angiography demonstrated patency of the inferior mesenteric vein (IMV in each, and successful portal decompression by anastomosis of the IMV to the left renal vein (n=4 or the inferior vena cava (n=1 was accomplished. Bleeding was permanently controlled: four patients have survived from one to eight years post-operatively. Because shunt procedures utilizing the IMV are technically straightforward, subtotally decompress the portal system and avoid the right upper quadrant, they may be advantageous in certain clinical settings.

  13. Varicose veins--Who should be referred?

    Science.gov (United States)

    Onida, Sarah; Davies, Alun H; Franklin, Ian

    2015-11-01

    Varicose veins are a common, progressive condition in the UK, with significant negative effects on patients' quality of life. Despite their prevalence, access to secondary care for the assessment and treatment of varicose veins can be variable throughout the country.The National Institute of Health and Care Excellence guidelines developed in 2013 provide evidence-based guidance on the referral, assessment, and management of the patient with venous disease.In this article, we review the development of the guidelines for the management of varicose veins over the last 15 years, highlighting the latest changes in referral criteria.

  14. VeinPLUS: A Transillumination and Reflection-based Hand Vein Database

    OpenAIRE

    Gruschina, Alexander

    2015-01-01

    This paper gives a short summary of work related to the creation of a department-hosted hand vein database. After the introducing section, special properties of the hand vein acquisition are explained, followed by a comparison table, which shows key differences to existing well-known hand vein databases. At the end, the ROI extraction process is described and sample images and ROIs are presented.

  15. Vein of Galen Malformation: Outcome after Embolization

    Directory of Open Access Journals (Sweden)

    J Gordon Millichap

    2003-12-01

    Full Text Available The neurodevelopmental outcome after endovascular treatment of vein of Galen malformation (VOGM in 27 patients seen between 1983 and 2002 was assessed by chart review and parental questionnaires at the University of California, San Francisco.

  16. [Retinal vein occlusion in a young patient].

    Science.gov (United States)

    Zemba, Mihail; Ochinciuc, Uliana; Sarbu, Laura; Avram, Corina; Camburu, Raluca; Stamate, Alina

    2013-01-01

    We present a case report of a 27 years old pacient with central retinal vein occlussion and macular edema. The pacient has a significant reduction of the macular aedema with complete recovery of vision after the treatment.

  17. The umbilical and paraumbilical veins of man.

    OpenAIRE

    Martin, B F; Tudor, R G

    1980-01-01

    During its transit through the umbilicus structural changes occur in the thick wall of the extra-abdominal segment of the umbilical vein whereby the components of the intra-abdominal segment acquire an essentially longitudinal direction and become arranged in fibro-elastic and fibro-muscular zones. The vein lumen becomes largely obliterated by asymmetrical proliferation of loose subendothelial conective tissue. The latter forms a new inner zone within which a small segment of the lumen persis...

  18. Primary leiomyosarcoma of the innominate vein.

    Science.gov (United States)

    Illuminati, Giulio; Miraldi, Fabio; Mazzesi, Giuseppe; D'urso, Antonio; Ceccanei, Gianluca; Bezzi, Marcello

    2007-01-01

    Primary venous leiomyosarcoma is rare. We report the case of a primary leiomyosarcoma of the left innominate vein, with neoplastic thrombus extending into the left jugular and subclavian veins. The tumor was curatively resected en bloc with anterior mediastinal and laterocervical lymphatics, through a median sternotomy prolonged into left cervicotomy. Primary venous sarcomas may be associated with prolonged survival in individual cases, with curative resection recommended as the standard treatment, in the absence of distant spread.

  19. CT in thrombosed dilated posterior epidural vein

    Energy Technology Data Exchange (ETDEWEB)

    Bammatter, S.; Schnyder, P.; Preux, J. de

    1987-05-01

    The authors report a case of thrombosis of the distal end of an enlarged right posterior epidural vein. The patient had a markedly narrow lumbar canal due to L5 spondylolisthesis. The dilated vein and the thrombosis were displayed by computed tomography but remained unrecognized until surgery. Pathogenesis of this condition is discussed. A review of the English, French and German literature revealed no prior radiological reports of a similar condition.

  20. Branch Retinal Vein Occlusion and Its Management

    Institute of Scientific and Technical Information of China (English)

    Desmond; Archer

    1992-01-01

    The natural course of Branch Retinal Vein Occlusion is determined by the site and completeness of the occlusion, the integrity of arterial perfusion to the affected sector and the efficiency of the developing collateral circulation. Most patients with tributary vein occlusion have some capillary fall out and microvascular incompetence in the distribution of the affected retina and vision is significantly compromised in over 50% of patients who have either chronic macular oedema or ischemia involving the...

  1. Isolated inferior mesenteric portal hypertension with giant inferior mesenteric vein and anomalous inferior mesenteric vein insertion

    Directory of Open Access Journals (Sweden)

    G Raghavendra Prasad

    2013-01-01

    Full Text Available Extrahepatic portal hypertension is not an uncommon disease in childhood, but isolated inferior mesenteric portal varices and lower gastrointestinal (GI bleed have not been reported till date. A 4-year-old girl presented with lower GI bleed. Surgical exploration revealed extrahepatic portal vein obstruction with giant inferior mesenteric vein and colonic varices. Inferior mesenteric vein was joining the superior mesenteric vein. The child was treated successfully with inferior mesenteric - inferior vena caval anastomosis. The child was relieved of GI bleed during the follow-up.

  2. Efficacy of varicose vein surgery with preservation of the great safenous vein

    Directory of Open Access Journals (Sweden)

    Bernardo Cunha Senra Barros

    2015-04-01

    Full Text Available OBJECTIVE: To evaluate the efficacy of surgical treatment of varicose veins with preservation of the great saphenous vein. METHODS: We conducted a prospective study of 15 female patients between 25 and 55 years of age with clinical, etiologic, anatomic and pathophysiologic (CEAP classification 2, 3 and 4. The patients underwent surgical treatment of primary varicose veins with great saphenous vein (GSV preservation. Doppler ultrasonography exams were carried out in the first and third months postoperatively. The form of clinical severity of venous disease, Venous Clinical Severity Score (VCSS was completed before and after surgery. We excluded patients with history of deep vein thrombosis, smoking or postoperatively use of elastic stockings or phlebotonics. RESULTS: All patients had improved VCSS (p <0.001 and reduction in the diameter of the great saphenous vein (p <0.001. There was a relationship between VCSS and the GSV caliber, as well as with preoperative CEAP. There was improvement in CEAP class in nine patients when compared with the preoperative period (p <0.001. CONCLUSION: The varicose vein surgery with preservation of the great saphenous vein had beneficial effects to the GSV itself, with decreasing caliber, and to the symptoms when the vein had maximum caliber of 7.5 mm, correlating directly with the CEAP. The decrease in GSV caliber, even without complete abolition of reflux, leads to clinical improvement by decreasing the reflux volume.

  3. Veins improve fracture toughness of insect wings.

    Directory of Open Access Journals (Sweden)

    Jan-Henning Dirks

    Full Text Available During the lifetime of a flying insect, its wings are subjected to mechanical forces and deformations for millions of cycles. Defects in the micrometre thin membranes or veins may reduce the insect's flight performance. How do insects prevent crack related material failure in their wings and what role does the characteristic vein pattern play? Fracture toughness is a parameter, which characterises a material's resistance to crack propagation. Our results show that, compared to other body parts, the hind wing membrane of the migratory locust S. gregaria itself is not exceptionally tough (1.04±0.25 MPa√m. However, the cross veins increase the wing's toughness by 50% by acting as barriers to crack propagation. Using fracture mechanics, we show that the morphological spacing of most wing veins matches the critical crack length of the material (1132 µm. This finding directly demonstrates how the biomechanical properties and the morphology of locust wings are functionally correlated in locusts, providing a mechanically 'optimal' solution with high toughness and low weight. The vein pattern found in insect wings thus might inspire the design of more durable and lightweight artificial 'venous' wings for micro-air-vehicles. Using the vein spacing as indicator, our approach might also provide a basis to estimate the wing properties of endangered or extinct insect species.

  4. Endovascular treatment of iliac vein compression syndrome

    Institute of Scientific and Technical Information of China (English)

    MENG Qing-you; LI Xiao-qiang; QIAN Ai-min; SANG Hong-fei; RONG Jian-jie; ZHU Li-wei

    2011-01-01

    Background Iliac vein compression syndrome (IVCS),the symptomatic compression of the left common iliac vein between the right common iliac artery and the vertebrae,is not an uncommon condition.The aim of this research was to retrospectively evaluate long-term outcome and the significance of endovascular treatment in patients with left IVCS.Methods Between January 1997 and September 2008,296 patients received interventional therapy in the left common iliac vein.In the second stage,170 cases underwent saphenous vein high ligation and stripping.Two hundred and thirty-one cases were followed up over a period of 6 to 120 months (average 46 months) and evaluated for symptom improvement with color ultrasound and ascending venography.Results The stenotic or occlusive segments of the left iliac vein were successfully dilated in 285 cases,of whom 272 received stent implantation therapy.Most of the patients achieved satisfactory results on discharge.During the follow-up period,varicose veins were alleviated in 98.7% of the patients,and leg swelling disappeared or was obviously relieved in 84% of cases.About 85% of leg ulcers completely healed.The total patency rate was 91.7% as evaluated with color ultrasound and 91.5% with ascending venography.Conclusions Endovascular treatment of IVCS provides effective symptomatic improvement and good long-term patency in most patients.

  5. Evaluation of leg varicose veins by MR venography

    Energy Technology Data Exchange (ETDEWEB)

    Kojima, Yoshifumi; Shiraishi, Tomokuni; Taira, Mitsuru [Kansai Medical Univ., Neyagawa, Osaka (Japan). Kohri Hospital; Imamura, Atsushi; Yamada, Hitoshi; Okuno, Masafumi; Kamiyama, Yasuo

    1998-11-01

    Preoperative evaluation was conducted on 30 patients with leg varicose veins by MR venography (MRV), and compared with conventional venography, MR images were performed by the 3D-SMASH Method. Compared with venography, MRV could more clearly demonstrate leg varicose veins with perforating veins than venography. It could detected fine varicose veins more than 2 mm in diameter, and deep veins. Furthermore, 3D observation enables accurate detection of the location of perforating vein. In conclusion, MRV is useful for the diagnosis of leg varicose vein. (author)

  6. Scattering removal for finger-vein image restoration.

    Science.gov (United States)

    Yang, Jinfeng; Zhang, Ben; Shi, Yihua

    2012-01-01

    Finger-vein recognition has received increased attention recently. However, the finger-vein images are always captured in poor quality. This certainly makes finger-vein feature representation unreliable, and further impairs the accuracy of finger-vein recognition. In this paper, we first give an analysis of the intrinsic factors causing finger-vein image degradation, and then propose a simple but effective image restoration method based on scattering removal. To give a proper description of finger-vein image degradation, a biological optical model (BOM) specific to finger-vein imaging is proposed according to the principle of light propagation in biological tissues. Based on BOM, the light scattering component is sensibly estimated and properly removed for finger-vein image restoration. Finally, experimental results demonstrate that the proposed method is powerful in enhancing the finger-vein image contrast and in improving the finger-vein image matching accuracy.

  7. Leaf vein segmentation using Odd Gabor filters and morphological operations

    OpenAIRE

    Katyal, Vini; Aviral

    2012-01-01

    Leaf vein forms the basis of leaf characterization and classification. Different species have different leaf vein patterns. It is seen that leaf vein segmentation will help in maintaining a record of all the leaves according to their specific pattern of veins thus provide an effective way to retrieve and store information regarding various plant species in database as well as provide an effective means to characterize plants on the basis of leaf vein structure which is unique for every specie...

  8. Gonadal vein tumor thrombosis due to renal cell carcinoma

    Directory of Open Access Journals (Sweden)

    Hamidreza Haghighatkhah

    2015-01-01

    Full Text Available Renal cell carcinoma (RCC had a tendency to extend into the renal vein and inferior vena cava, while extension into the gonadal vein has been rarely reported. Gonadal vein tumor thrombosis appears as an enhancing filling defect within the dilated gonadal vein anterior to the psoas muscle and shows an enhancement pattern identical to that of the original tumor. The possibility of gonadal vein thrombosis should be kept in mind when looking at an imaging study of patients with RCC

  9. Nutcracker Syndrome Complicated by Left Renal Vein Thrombosis

    Directory of Open Access Journals (Sweden)

    Faouzi Mallat

    2013-01-01

    Full Text Available Isolated renal vein thrombosis is a rare entity. We present a patient whose complaint of flank pain led to the diagnosis of a renal vein thrombosis. In this case, abdominal computed tomography angiography was helpful in diagnosing the nutcracker syndrome complicated by the renal vein thrombosis. Anticoagulation was started and three weeks later, CTA showed complete disappearance of the renal vein thrombosis. To treat the Nutcracker syndrome, we proposed left renal vein transposition that the patient consented to.

  10. Nutcracker syndrome complicated by left renal vein thrombosis.

    Science.gov (United States)

    Mallat, Faouzi; Hmida, Wissem; Jaidane, Mehdi; Mama, Nadia; Mosbah, Faouzi

    2013-01-01

    Isolated renal vein thrombosis is a rare entity. We present a patient whose complaint of flank pain led to the diagnosis of a renal vein thrombosis. In this case, abdominal computed tomography angiography was helpful in diagnosing the nutcracker syndrome complicated by the renal vein thrombosis. Anticoagulation was started and three weeks later, CTA showed complete disappearance of the renal vein thrombosis. To treat the Nutcracker syndrome, we proposed left renal vein transposition that the patient consented to.

  11. Gonadal vein tumor thrombosis due to renal cell carcinoma.

    Science.gov (United States)

    Haghighatkhah, Hamidreza; Karimi, Mohammad Ali; Taheri, Morteza Sanei

    2015-01-01

    Renal cell carcinoma (RCC) had a tendency to extend into the renal vein and inferior vena cava, while extension into the gonadal vein has been rarely reported. Gonadal vein tumor thrombosis appears as an enhancing filling defect within the dilated gonadal vein anterior to the psoas muscle and shows an enhancement pattern identical to that of the original tumor. The possibility of gonadal vein thrombosis should be kept in mind when looking at an imaging study of patients with RCC.

  12. Augmented reality based real-time subcutaneous vein imaging system

    OpenAIRE

    Ai, Danni; Yang, Jian; Fan, Jingfan; Zhao, Yitian; Song, Xianzheng; Shen, Jianbing; Shao, Ling; Wang, Yongtian

    2016-01-01

    A novel 3D reconstruction and fast imaging system for subcutaneous veins by augmented reality is presented. The study was performed to reduce the failure rate and time required in intravenous injection by providing augmented vein structures that back-project superimposed veins on the skin surface of the hand. Images of the subcutaneous vein are captured by two industrial cameras with extra reflective near-infrared lights. The veins are then segmented by a multiple-feature clustering method. V...

  13. Scattering Removal for Finger-Vein Image Restoration

    OpenAIRE

    Jinfeng Yang; Ben Zhang; Yihua Shi

    2012-01-01

    Finger-vein recognition has received increased attention recently. However, the finger-vein images are always captured in poor quality. This certainly makes finger-vein feature representation unreliable, and further impairs the accuracy of finger-vein recognition. In this paper, we first give an analysis of the intrinsic factors causing finger-vein image degradation, and then propose a simple but effective image restoration method based on scattering removal. To give a proper description of f...

  14. An effective preprocessing method for finger vein recognition

    Science.gov (United States)

    Peng, JiaLiang; Li, Qiong; Wang, Ning; Abd El-Latif, Ahmed A.; Niu, Xiamu

    2013-07-01

    The image preprocessing plays an important role in finger vein recognition system. However, previous preprocessing schemes remind weakness to be resolved for the high finger vein recongtion performance. In this paper, we propose a new finger vein preprocessing that includes finger region localization, alignment, finger vein ROI segmentation and enhancement. The experimental results show that the proposed scheme is capable of enhancing the quality of finger vein image effectively and reliably.

  15. Corrosion cast study of the canine hepatic veins.

    Science.gov (United States)

    Uršič, M; Vrecl, M; Fazarinc, G

    2014-11-01

    This study presents a detailed description of the distribution, diameters and drainage patterns of hepatic veins on the basis of the corrosion cast analysis in 18 dogs. We classified the hepatic veins in three main groups: the right hepatic veins of the caudate process and right lateral liver lobe, the middle hepatic veins of the right medial and quadrate lobes and the left hepatic veins of both left liver lobes and the papillary process. The corrosion cast study showed that the number of the veins in the Nomina Anatomica Veterinaria and most anatomical textbooks is underestimated. The number of various-sized hepatic veins of the right liver division ranged from 3 to 5 and included 1 to 4 veins from the caudate process and 2 to 4 veins from the right lateral liver lobe. Generally, in all corrosion casts, one middle-sized vein from the right part of the right medial lobe, which emptied separately in the caudal vena cava, was established. The other vein was a large-sized vein from the remainder of the central division, which frequently joined the common left hepatic vein from the left liver lobes. The common left hepatic vein was the largest of all the aforementioned hepatic veins.

  16. [Calcified deep vein thrombosis in a patient with recurrent deep vein thrombosis and sarcoidosis].

    Science.gov (United States)

    Krmek, Dubravka Zupanić; Brajković, Ivana; Bekić, Dinko; Krnić, Antun; Jurković, Petar; Pavlović, Tomislav

    2013-12-01

    In this article, we present a rare case of calcified deep vein thrombosis in a 42-year-old female patient with frequent relapses of pulmonary sarcoidosis since 1995, for which she was on maintenance therapy with corticosteroids and with consequential secondary diabetes. Recent femoral vein thrombosis was diagnosed with color Doppler in 2012. At the same time, calcified occlusive thrombus in vena cava inferior from the level of renal vein to the confluence of hepatic veins was diagnosed on abdominal multi-slice computed tomography (MSCT). Digital subtraction venography (DSV) revealed a well-developed collateral circulation through the paravertebral veins, azygos and hemiazygos vein. There were no risk factors for thrombosis other than sarcoidosis and diabetes. Deep vein thrombosis is rarely described with sarcoidosis, but according to literature reports, it usually appears as a recurrence and simultaneously at multiple locations. According to the current knowledge, we cannot say for sure whether it is a disease with an increased risk of deep vein thrombosis or there is a combination of multiple risk factors present simultaneously.

  17. Veining Failure and Hydraulic Fracturing in Shales

    Science.gov (United States)

    Mighani, S.; Sondergeld, C. H.; Rai, C. S.

    2014-12-01

    During the hydraulic fracturing, the pressurized fluid creates new fractures and reactivates existing natural fractures forming a highly conductive Stimulated Reservoir Volume (SRV) around the borehole. We extend the previous work on Lyons sandstone and pyrophyllite to anisotropic shale from the Wolfcamp formation. We divide the rock anisotropy into two groups: a) conventional and b) unconventional (shaly) anisotropy. X-ray Computed Tomography (CT), compressional velocity anisotropy, and SEM analysis are used to identify three causes of anisotropy: bedding planes, clay lamination, and calcite veins. Calcite vein is a subsequently filled with calcite bonded weakly to the matrix. Velocity anisotropy and visual observations demonstrate the calcite filled veins to be mostly subparallel to the fabric direction. Brazilian tests are carried out to observe the fracture initiation and propagation under tension. High speed photography (frame rate 300,000 frame/sec) was used to capture the failure. Strain gauges and Acoustic Emission (AE) sensors recorded the deformation leading up to and during failure. SEM imaging and surface profilometry were employed to study the post-failure fracture system and failed surface topology. Fracture permeability was measured as a function of effective stress. Brazilian tests on small disks containing a centered single vein revealed the shear strength of the veins. We interpret the strain data and number, frequency, and amplitude of AE events which are correlated well with the observed fracture process zone, surface roughness, and permeability. The unpropped fracture has enhanced permeability by two orders of magnitude. The observed anisotropic tensile failure seems to have a universal trend with a minimum strength occurring at 15o orientation with respect to the loading axis. The veins at 15o orientation with respect to the loading axis were easily activated at 30% of the original failure load. The measured strength of the vein is as low as 6

  18. A new approach for sclera vein recognition

    Science.gov (United States)

    Thomas, N. L.; Du, Yingzi; Zhou, Zhi

    2010-04-01

    The vein structure in the sclera is stable over time, unique to each person, and well suited for human identification. A few researchers have performed sclera vein pattern recognition and reported promising initial results. Sclera recognition poses several challenges: the vein structure moves and deforms with the movement of the eye; images of sclera patterns are often defocused and/or saturated; and, most importantly, the vein structure in the sclera is multi-layered and has complex non-linear deformation. In this paper, we proposed a new method for sclera recognition: First, we developed a color-based sclera region estimation scheme for sclera segmentation. Second, we designed a Gabor wavelet-based sclera pattern enhancement method, and an adaptive thresholding method to emphasize and binarize the sclera vein patterns. Third, we proposed a line descriptor-based feature extraction, registration, and matching method that is illumination-, scale-, orientation-, and deformation-invariant, and can mitigate the multi-layered deformation effects exhibited in the sclera and tolerate segmentation error. It is empirically verified using the UBIRIS database that the proposed method can perform accurate sclera recognition.

  19. Ligation of superior mesenteric vein and portal to splenic vein anastomosis after superior mesenteric-portal vein confluence resection during pancreaticoduodenectomy – Case report

    Science.gov (United States)

    Tang, Jianlin; Abbas, Jihad; Hoetzl, Katherine; Allison, David; Osman, Mahamed; Williams, Mallory; Zelenock, Gerald B.

    2014-01-01

    62 year old Caucasian female with pancreatic head mass abutting the superior mesenteric vein (SMV) presented with fine needle aspiration biopsy confirmed diagnosis of ductal adenocarcinoma. CT scan showed near complete obstruction of portal vein and large SMV collateral development. After 3 months of neoadjuvant therapy, her portal vein flow improved significantly, SMV collateral circulation was diminished. Pancreaticoduodenectomy (PD) and superior mesenteric portal vein (SMPV) confluence resection were performed; A saphenous vein interposition graft thrombosed immediately. The splenic vein remnant was distended and adjacent to the stump of the portal vein. Harvesting an internal jugular vein graft required extra time and using a synthetic graft posed a risk of graft thrombosis or infection. As a result, we chose to perform a direct anastomosis of the portal and splenic vein in a desperate situation. The anastomosis decompressed the mesenteric venous system, so we then ligated the SMV. The patient had an uneventful postoperative course, except transient ascites. She redeveloped ascites more than one year later. At that time a PET scan showed bilateral lung and right femur metastatic disease. She expired 15 months after PD. Conclusion The lessons we learned are (1) Before SMPV confluence resection, internal jugular vein graft should be ready for reconstruction. (2) Synthetic graft is an alternative for internal jugular vein graft. (3) Direct portal vein to SMV anastomosis can be achieved by mobilizing liver. (4) It is possible that venous collaterals secondary to SMV tumor obstruction may have allowed this patient's post-operative survival. PMID:25568802

  20. MRI manifestations of enlarged superior ophthalmic vein

    Institute of Scientific and Technical Information of China (English)

    WEI Rui-li; MA Xiao-ye; CAI Ji-ping; ZHU Huang

    2002-01-01

    Objective:To assess MRI in the evaluation of enlarged superior ophthalmic vein (SOV). Methods: MRI manifestations and etiology of forty-six patients with enlarged SOV were analyzed. Results: SOV enlargement was noted to occur in carotid-cavernous fistula, ophthalmic Graves'disease, Tolosa-Hunt syndrome, inflammation at the apex of the orbit, orbital pseudotumor and thrombosis of cavernous sinus. The dilated vein appeared as signal void tubular shadows on both T1 and T2 weighted images. The diameter of the enlarged vein was 3.5-6.0 mm. Extraocular muscle enlargement, orbital pathologies, enlarged carotid cavernous sinus etc were also revealed by MRI. Conclusion: The dilated SOV may be well demonstrated by MRI. The etiological diagnosis of enlarged SOV can be made in combination with the associated findings.

  1. Pathogenesis of varicose veins - lessons from biomechanics.

    Science.gov (United States)

    Pfisterer, Larissa; König, Gerd; Hecker, Markus; Korff, Thomas

    2014-03-01

    The development of varicose veins or chronic venous insufficiency is preceded by and associated with the pathophysiological remodelling of the venous wall. Recent work suggests that an increase in venous filling pressure is sufficient to promote varicose remodelling of veins by augmenting wall stress and activating venous endothelial and smooth muscle cells. In line with this, known risk factors such as prolonged standing or an obesity-induced increase in venous filling pressure may contribute to varicosis. This review focuses on biomechanically mediated mechanisms such as an increase in wall stress caused by venous hypertension or alterations in blood flow, which may be involved in the onset of varicose vein development. Finally, possible therapeutic options to counteract or delay the progress of this venous disease are discussed.

  2. Deep vein thrombosis: a clinical review

    Directory of Open Access Journals (Sweden)

    Kesieme EB

    2011-04-01

    Full Text Available Emeka Kesieme1, Chinenye Kesieme2, Nze Jebbin3, Eshiobo Irekpita1, Andrew Dongo11Department of Surgery, Irrua Specialist Teaching Hospital, Irrua, Nigeria; 2Department of Paediatrics, Irrua Specialist Teaching Hospital, Irrua, Nigeria; 3Department of Surgery, University of Port Harcourt Teaching Hospital, Port-Harcourt, NigeriaBackground: Deep vein thrombosis (DVT is the formation of blood clots (thrombi in the deep veins. It commonly affects the deep leg veins (such as the calf veins, femoral vein, or popliteal vein or the deep veins of the pelvis. It is a potentially dangerous condition that can lead to preventable morbidity and mortality.Aim: To present an update on the causes and management of DVT.Methods: A review of publications obtained from Medline search, medical libraries, and Google.Results: DVT affects 0.1% of persons per year. It is predominantly a disease of the elderly and has a slight male preponderance. The approach to making a diagnosis currently involves an algorithm combining pretest probability, D-dimer testing, and compression ultrasonography. This will guide further investigations if necessary. Prophylaxis is both mechanical and pharmacological. The goals of treatment are to prevent extension of thrombi, pulmonary embolism, recurrence of thrombi, and the development of complications such as pulmonary hypertension and post-thrombotic syndrome.Conclusion: DVT is a potentially dangerous condition with a myriad of risk factors. Prophylaxis is very important and can be mechanical and pharmacological. The mainstay of treatment is anticoagulant therapy. Low-molecular-weight heparin, unfractionated heparin, and vitamin K antagonists have been the treatment of choice. Currently anticoagulants specifically targeting components of the common pathway have been recommended for prophylaxis. These include fondaparinux, a selective indirect factor Xa inhibitor and the new oral selective direct thrombin inhibitors (dabigatran and selective

  3. Postpartum Ovarian Vein Thrombophlebitis with Staphylococcal Bacteremia

    Science.gov (United States)

    Parino, Eduardo; Mulinaris, Eric; Saccomano, Edgardo; Gallo, Juan Cruz; Kohan, Gabriel

    2015-01-01

    A 34-year-old female patient presented with fever and right flank pain ten days after uncomplicated vaginal delivery. CT examination revealed right ovarian vein thrombosis and methicillin-resistant Staphylococcus aureus (MRSA) was isolated from blood cultures. No other source of bacteremia was found. Antibiotic therapy and anticoagulation with enoxaparin were instituted. Fourteen days after admission, she was discharged in good condition. Although a very uncommon complication after spontaneous vaginal delivery, septic ovarian vein thrombophlebitis should be suspected in cases of persistent puerperal fever when other diagnostic possibilities have been excluded. PMID:26221549

  4. Renal actinomycosis with concomitant renal vein thrombosis.

    Science.gov (United States)

    Chang, Dong-Suk; Jang, Won Ik; Jung, Ji Yoon; Chung, Sarah; Choi, Dae Eun; Na, Ki-Ryang; Lee, Kang Wook; Shin, Yong-Tai

    2012-02-01

    Renal actinomycosis is a rare infection caused by fungi of the genus Actinomyces. A 74-year-old male was admitted to our hospital because of gross hematuria with urinary symptoms and intermittent chills. Computed tomography of the abdomen showed thrombosis in the left renal vein and diffuse, heterogeneous enlargement of the left kidney. After nephrectomy, sulfur granules with chronic suppurative inflammation were seen microscopically, and the histopathological diagnosis was renal actinomycosis. Our case is the first report of renal actinomycosis with renal vein thrombosis.

  5. Doppler spectral characteristics of infrainguinal vein bypasses

    DEFF Research Database (Denmark)

    Nielsen, Tina G; von Jessen, F; Sillesen, H;

    1993-01-01

    With the aim of assessing the velocity profile of femoropopliteal and femorocrural vein bypasses, 128 patients undergoing infrainguinal vein bypass surgery entered a postoperative Duplex surveillance protocol, which included clinical assessment and Duplex scanning, using Doppler spectral analysis...... of arteriovenous fistulas the initially antegrade diastolic velocity was replaced by a retrograde flow within 3 months, whereas a forward flow in diastole was sustained in grafts with patent fistulas. Abnormal Duplex findings in 31 patients led to angiography and revision in 13 cases. Four revised grafts failed...

  6. Duplicated Ižnternal Juguler Vein

    Directory of Open Access Journals (Sweden)

    Ahmet Kirbas

    2014-03-01

    Full Text Available    Duplicated internal juguler vein (DIJV is a rare anomaly and reported incidence is 0.4 % in the literature. A 45-year-old female patient was referred to our hospital because of non pulsatile neck swelling. The magnetic resonance image (MRI showed left IJVs divided at the angles of the mandible running anterior to the common carotid artery until anterior mediastinal level. Clinicians should be aware of the rare possibility of duplicated IJVs in patients presenting with neck swelling. The development of imaging technics have revealed more cases of duplicated internal juguler vein.

  7. The Use Of The VEINES-QOL/Sym Questionnaire In Patients Operated For Varicose Veins

    Directory of Open Access Journals (Sweden)

    Migdalski Łukasz

    2015-10-01

    Full Text Available Venous insufficiency is a common, chronic disease that affects nearly half of the population in highly developed countries. The vast majority of affected patients suffer from varicose veins (VV. Recently, the priority in medicine has been patient satisfaction with treatment and high quality of life. Therefore, disease-specific questionnaires that measure quality of life have been developed. One of these is VEINES-QOL/Sym with two subscales that assess quality of life and disease symptoms. To date, it has been used to examine patients with venous ulcers and thrombosis. No data are available concerning the use of VEINES to assess patients after VV surgery.

  8. An unusual case: right proximal ureteral compression by the ovarian vein and distal ureteral compression by the external iliac vein

    Directory of Open Access Journals (Sweden)

    Halil Ibrahim Serin

    2015-12-01

    Full Text Available A 32-years old woman presented to the emergency room of Bozok University Research Hospital with right renal colic. Multidetector computed tomography (MDCT showed compression of the proximal ureter by the right ovarian vein and compression of the right distal ureter by the right external iliac vein. To the best of our knowledge, right proximal ureteral compression by the ovarian vein together with distal ureteral compression by the external iliac vein have not been reported in the literature. Ovarian vein and external iliac vein compression should be considered in patients presenting to the emergency room with renal colic or low back pain and a dilated collecting system.

  9. Risk factors of thrombosis in abdominal veins

    Institute of Scientific and Technical Information of China (English)

    Amit Kumar Durra; Ashok Chacko; Biju George; Joseph Anjilivelil Joseph; Sukesh Chandran Nair; Vikram Mathews

    2008-01-01

    AIM: To estimate the prevalence of inherited and acquired thrombophilic risk factors in patients with abdominal venous thrombosis and to compare the risk factor profiles between Budd-Chiari syndromes (BCS) and splanchnic vein thrombosis (SVT).METHODS: In this retrospective study, 36 patients with abdominal venous thrombosis were studied.The patients were divided into Budd-Chiari group (hepatic vein, IVC thrombosis) and splanchnic venous thrombosis group (portal, splenic, superior mesenteric veins) based on the veins involved. Hereditary and acquired thrombophilic risk factors were evaluated in all patients.RESULTS: Twenty patients had SVT, 14 had BCS,and 2 had mixed venous thrombosis. Ten patients (28%) had hereditary and 10 patients (28%) acquired thrombophilic risk factors. The acquired risk factors were significantly more common in the SVT group (SVT vs BCS:45% vs 7%,x2=5.7,P=0.02) while hereditary risk factors did not show significant differences between the two groups (SVT vs BCS: 25%vs 36%, x2=0.46,P=0.7). Multiple risk factors were present in one (7%) patient with BCS and in 3 patients (15%) with SVT. No risk factors were identified in 57% of patients with BCS and in 45% of patients with SVT.CONCLUSION: Hereditary and acquired risk factors play an important role in the etiopathogenesis of abdominal venous thrombosis. Acquired risk factors are significantly more common in SVT patients while hereditary factors are similar in both groups.

  10. Brain vein disorders in newborn infants

    NARCIS (Netherlands)

    Raets, Marlou; Dudink, Jeroen; Raybaud, Charles; Ramenghi, Luca; Lequin, Maarten; Govaert, Paul

    2015-01-01

    The brain veins of infants are in a complex phase of remodelling in the perinatal period. Magnetic resonance venography and susceptibility-weighted imaging, together with high-resolution Doppler ultrasound, have provided new tools to aid study of venous developmental anatomy and disease. This review

  11. Gene Variants Associated With Deep Vein Thrombosis

    NARCIS (Netherlands)

    Bezemer, Irene D.; Bare, Lance A.; Doggen, Carine J.M.; Arellano, Andre R.; Tong, Carmen; Rowland, Charles M.; Catanese, Joseph; Young, Bradford A.; Reitsma, Pieter H.; Devlin, James J.; Rosendaal, Frits R.

    2008-01-01

    Context The genetic causes of deep vein thrombosis (DVT) are not fully understood. Objective To identify single-nucleotide polymorphisms (SNPs) associated with DVT. Design, Setting, and Patients We used 3 case-control studies of first DVT. A total of 19 682 gene-centric SNPs were genotyped in 44

  12. A RARE VARIATION OF GREAT SAPHENOUS VEIN

    Directory of Open Access Journals (Sweden)

    Nakhate Manisha

    2014-11-01

    Full Text Available The venous system is more complex and variable than arterial system due to its frequent anatomical variations. This paper discusses the anatomy of the great saphenous vein and its variation observed in a male cadaver of around 60 years old.

  13. Puzzles in practice: splenic vein thrombosis.

    Science.gov (United States)

    McIntyre, Brittany; Marsh, Melanie; Walden, Jeffrey

    2016-06-01

    This report details a 58-year-old gentleman who presented to his outpatient primary care physician's clinic several times over four weeks for ongoing epigastric pain radiating into his left flank, dry heaving, and constipation. He was presumed to have gastritis at each visit and prescribed escalating doses of proton pump inhibitors. Due to the unrelenting pain, he eventually was admitted to the hospital and diagnosed with splenic vein thrombosis after computed tomography imaging of the abdomen. Our literature search revealed that pancreatic pathology is overwhelmingly the contributing factor to splenic vein thrombosis. Our patient had prominent collateral vasculature, suggesting that his splenic vein thrombosis was chronic in nature and likely the cause of his ongoing abdominal pain. Splenic vein thrombosis is an uncommon cause of abdominal pain, but one that should be included in the treating physician's differential diagnoses when abdominal pain is ongoing despite medical therapy. Although he had no evidence of initial findings on radiography, our patient was eventually diagnosed with biopsy-proven pancreatic cancer. Our case report demonstrates how patients presenting with persistent or worsening abdominal pain despite the use of proton pump inhibitors or other acid reducing agents and potential 'red flag' findings such as decreased appetite and weight loss should be worked up for other potential sources of abdominal pathology.

  14. Small saphenous vein: where does reflux go?

    Directory of Open Access Journals (Sweden)

    Guillermo Gustavo Rossi

    2013-06-01

    Full Text Available BACKGROUND: The anatomy of small saphenous vein (SSV is very variable because of its complex embryological origin. SSV incompetence often causes reflux that goes to the perforating veins, sometimes not respecting the anatomical course. OBJECTIVE: To analyze differences in reflux direction and reentry in the SSV. METHODS: In this prospective, observational study, 60 lower limbs with SSV incompetence of 43 patients were assessed using a color Doppler ultrasound protocol. RESULTS: Reentry variations were grouped into four types and subtypes. Percentage results were: Type A, perforating veins on the medial side = 25/60 cases (41.66%; subtypes: Cockett, Sherman, paratibial and vertex; Type B, lateral malleolus and perforating veins on the lateral side (fibular 17-26 cm = 15/60 cases (25%; subtypes: fibular and malleolus; Type C, two branches = 19/60 cases (31.66%; subtypes: gastrocnemius and Cockett, gastrocnemius and malleolus, and/or fibular, Cockett and malleolus, Cockett-vertex and fibular; Type D, reflux in the superficial system = 1/60 cases (1.66%. CONCLUSION: On most of the lower limbs assessed, reflux did not follow the classical anatomic course. Our findings demonstrated a high degree of variation in reflux/reentry, but no SSV anatomical variations. Reflux seems to, either look for the most accessible anatomical connection for reentry or be originated in the distal area and then reach the SSV.

  15. Varicose Veins: Role of Mechanotransduction of Venous Hypertension

    Science.gov (United States)

    Atta, Hussein M.

    2012-01-01

    Varicose veins affect approximately one-third of the adult population and result in significant psychological, physical, and financial burden. Nevertheless, the molecular pathogenesis of varicose vein formation remains unidentified. Venous hypertension exerted on veins of the lower extremity is considered the principal factor in varicose vein formation. The role of mechanotransduction of the high venous pressure in the pathogenesis of varicose vein formation has not been adequately investigated despite a good progress in understanding the mechanomolecular mechanisms involved in transduction of high blood pressure in the arterial wall. Understanding the nature of the mechanical forces, the mechanosensors and mechanotransducers in the vein wall, and the downstream signaling pathways will provide new molecular targets for the prevention and treatment of varicose veins. This paper summarized the current understanding of mechano-molecular pathways involved in transduction of hemodynamic forces induced by blood pressure and tries to relate this information to setting of venous hypertension in varicose veins. PMID:22489273

  16. Varicose Veins: Role of Mechanotransduction of Venous Hypertension

    Directory of Open Access Journals (Sweden)

    Hussein M. Atta

    2012-01-01

    Full Text Available Varicose veins affect approximately one-third of the adult population and result in significant psychological, physical, and financial burden. Nevertheless, the molecular pathogenesis of varicose vein formation remains unidentified. Venous hypertension exerted on veins of the lower extremity is considered the principal factor in varicose vein formation. The role of mechanotransduction of the high venous pressure in the pathogenesis of varicose vein formation has not been adequately investigated despite a good progress in understanding the mechanomolecular mechanisms involved in transduction of high blood pressure in the arterial wall. Understanding the nature of the mechanical forces, the mechanosensors and mechanotransducers in the vein wall, and the downstream signaling pathways will provide new molecular targets for the prevention and treatment of varicose veins. This paper summarized the current understanding of mechano-molecular pathways involved in transduction of hemodynamic forces induced by blood pressure and tries to relate this information to setting of venous hypertension in varicose veins.

  17. Evaluation of left renal vein entrapment using multidetector computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Poyraz, Ahmet K.; Onur, Mehmet R. [Dept. of Radiology, Firat Univ. School of Medicine, Elazig (Turkey)], e-mail: akursadpoyraz@yahoo.com.tr; Firdolas, Fatih [Dept. of Urology, Firat Univ. School of Medicine, Elazig (Turkey); Kocakoc, Ercan [Dept. of Radiology, Bezmialem Vakif Univ., School of Medicine, Istanbul (Turkey)

    2013-03-15

    Background: Nutcracker syndrome, also called left renal vein entrapment syndrome, is a cause of non-glomerular hematuria with difficulties in diagnosis. Multidetector computed tomography (MDCT) is a powerful tool to prevent unnecessary diagnostic procedures. Purpose: To retrospectively determine the prevalence of nutcracker phenomenon and nutcracker syndrome seen in MDCT in consecutive patients. Material and Methods: The institutional review board approved the study and waived the requirement for informed consent. Abdominal contrast-enhanced MDCT scans were reviewed from 1000 consecutive patients. MDCT scan assessment included renal vein diameter measurements and evaluation for the presence of anterior or posterior left renal vein entrapment. Electronic medical records and urine analysis reports of patients with left renal vein entrapment were reviewed. Student's t test was used to assess differences in renal vein diameter in patients with left renal vein entrapment. Results: Left renal vein entrapment was observed in 10.9% (109), retroaortic left renal vein in 6.5% (65), entrapment of left renal vein between superior mesenteric artery and aorta in 4.1% (41), and circumaortic left renal vein in 0.3% (3) of patients. Mean diameters of right (8.8 {+-} 1.9 mm) and unentrapped left (8.9 {+-} 1.8 mm) renal veins were not significantly different (P = 0.1). The mean diameter of anterior entrapped left renal veins (10.3 {+-} 2 mm) was significantly greater (P = 0.04) than contralateral renal veins (8.6 {+-} 2.1 mm) in their widest portion. In 8.8% of patients with the left renal vein entrapment, urine analysis showed isomorphic hematuria or proteinuria with no other known cause. Varicocele and pelvic congestion were seen in 5.5% of patients with the left renal vein entrapment. Conclusion: Left renal vein entrapment is not a rare entity and renal nutcracker phenomenon might be underdiagnosed.

  18. Image Quality Enhancement Using the Direction and Thickness of Vein Lines for Finger-Vein Recognition

    OpenAIRE

    Young Ho Park; Kang Ryoung Park

    2012-01-01

    On the basis of the increased emphasis placed on the protection of privacy, biometric recognition systems using physical or behavioural characteristics such as fingerprints, facial characteristics, iris and finger‐vein patterns or the voice have been introduced in applications including door access control, personal certification, Internet banking and ATM machines. Among these, finger‐vein recognition is advantageous in that it involves the use of inexpensive and small devices that are diffic...

  19. Primary varicose veins: Frequency, clinical significance and surgical treatment

    Directory of Open Access Journals (Sweden)

    Vasić Dragan M.

    2004-01-01

    Full Text Available INTRODUCTION According to the definition of the World Health Organization, varicose veins represent abnormally enlarged superficial veins having baggy or cylindrical shape. The most frequent cause of primary varicose veins is the insufficiency of long saphenous vein (LSV, but especially the basin of its connection with femoral vein and perforating veins. OBJECTIVE The objectives of these investigations were: the determination of insufficiency incidence of SSV in cases of LSV insufficiency; the establishment of association of insufficiency of perforating veins of the basin of LSV and SSV; the study of the results of surgical treatment of insufficiency and varicosity of both short and long saphenous veins. METHODS In this study, 100 patients (66 women and 34 men, average age 52.1 years, with clinical symptoms showing the insufficiency and varicosity of long saphenous vein with no change of deep vein system were examined. Ultrasonographic examinations were made using Color Doppler probes - 7.5 and 3.75 MHz (Toshiba Corevison SSA 350 A; the development of incompetence of long saphenous vein (LSV and short saphenous vein (SSV at the level of the junction as well as other incompetent valves were examined. The reflux was defined as a retrograde flow of the duration longer than 0.5 seconds. RESULTS The insufficiency of short saphenous vein was determined by ultrasonographic examination in 34%, while the insufficiency of perforating veins in 80% of patients. 40% of patients were operated (33.3% of females, and 52.9% of males. The most frequent indications for surgical treatment of superficial veins insufficiency were: strong varicosities, clear symptoms and signs, superficial thrombophlebitis and conditions after superficial thrombophlebitis. Surgical treatment was applied in 16% of patients due to recurrence in the basin of long saphenous vein, and in 6% of cases because of the recurrence in the basin of short saphenous vein. Data analysis failed to

  20. Treatment of recurrent varicose veins of the great saphenous vein by conventional surgery and endovenous laser ablation.

    NARCIS (Netherlands)

    Groenendael, L. van; Vliet, J.A. van der; Flinkenflogel, L.; Roovers, E.A.; Sterkenburg, S.M. van; Reijnen, M.M.P.J.

    2009-01-01

    OBJECTIVE: Varicose vein recurrence of the great saphenous vein (GSV) is a common, costly, and complex problem. The aim of the study was to assess feasibility of endovenous laser ablation (EVLA) in recurrent varicose veins of the GSV and to compare this technique with conventional surgical reinterve

  1. Primary leiomyosarcoma of saphenous vein presenting as deep venous thrombosis.

    Science.gov (United States)

    Fremed, Daniel I; Faries, Peter L; Schanzer, Harry R; Marin, Michael L; Ting, Windsor

    2014-12-01

    Only a small number of venous leiomyosarcomas have been previously reported. Of these tumors, those of saphenous origin comprise a minority of cases. A 59-year-old man presented with symptoms of deep vein thrombosis and was eventually diagnosed with primary leiomyosarcoma of great saphenous vein origin. The tumor was treated with primary resection and femoral vein reconstruction with autologous patch. Although extremely rare, saphenous leiomyosarcoma can present as deep vein thrombosis. Vascular tumors should be included in the differential diagnosis of atypical extremity swelling refractory to conventional deep vein thrombosis management.

  2. Internal vein texture and vein evolution of the epithermal Shila-Paula district, southern Peru

    Science.gov (United States)

    Chauvet, Alain; Bailly, Laurent; André, Anne-Sylvie; Monié, Patrick; Cassard, Daniel; Tajada, Fernando Llosa; Vargas, Juan Rosas; Tuduri, Johann

    2006-07-01

    The epithermal Shila-Paula Au-Ag district is characterized by numerous veins hosted in Tertiary volcanic rocks of the Western Cordillera (southern Peru). Field studies of the ore bodies reveal a systematic association of a main E-W vein with secondary N55-60°W veins—two directions that are also reflected by the orientation of fluid-inclusion planes in quartz crystals of the host rock. In areas where this pattern is not recognized, such as the Apacheta sector, vein emplacement seems to have been guided by regional N40°E and N40°W fractures. Two main vein-filling stages are identified. stage 1 is a quartz-adularia-pyrite-galena-sphalerite-chalcopyrite-electrum-Mn silicate-carbonate assemblage that fills the main E-W veins. stage 2, which contains most of the precious-metal mineralization, is divided into pre-bonanza and bonanza substages. The pre-bonanza substage consists of a quartz-adularia-carbonate assemblage that is observed within the secondary N45-60°W veins, in veinlets that cut the stage 1 assemblage, and in final open-space fillings. The two latter structures are finally filled by the bonanza substage characterized by a Fe-poor sphalerite-chalcopyrite-pyrite-galena-tennantite-tetrahedrite-polybasite-pearceite-electrum assemblage. The ore in the main veins is systematically brecciated, whereas the ore in the secondary veins and geodes is characteristic of open-space crystallization. Microthermometric measurements on sphalerite from both stages and on quartz and calcite from stage 2 indicate a salinity range of 0 to 15.5 wt% NaCl equivalent and homogenization temperatures bracketed between 200 and 330°C. Secondary CO2-, N2- and H2S-bearing fluid inclusions are also identified. The age of vein emplacement, based on 40Ar/39Ar ages obtained on adularia of different veins, is estimated at around 11 Ma, with some overlap between adularia of stage 1 (11.4±0.4 Ma) and of stage 2 (10.8±0.3 Ma). A three-phase tectonic model has been constructed to explain the

  3. Ligation of superior mesenteric vein and portal to splenic vein anastomosis after superior mesenteric-portal vein confluence resection during pancreaticoduodenectomy – Case report

    Directory of Open Access Journals (Sweden)

    Jianlin Tang

    2014-12-01

    Conclusion: The lessons we learned are (1 Before SMPV confluence resection, internal jugular vein graft should be ready for reconstruction. (2 Synthetic graft is an alternative for internal jugular vein graft. (3 Direct portal vein to SMV anastomosis can be achieved by mobilizing liver. (4 It is possible that venous collaterals secondary to SMV tumor obstruction may have allowed this patient's post-operative survival.

  4. Clinical Features of Primary Vein Grafts in Free Tissue Transfers

    Directory of Open Access Journals (Sweden)

    Mitsuru Nemoto

    2015-01-01

    Full Text Available The outcomes of free tissue transfers combined with vein grafts have been inconsistent, and discussions continue regarding their appropriate use. Of the 142 free tissue transfers that we performed from January 2004 to December 2011, we retrospectively analyzed 15 consecutive patients who underwent free tissue transfers in combination with vein grafts. Etiologies included trauma (8 patients, infection (4, and tumor (3. Types of free tissue transfers were fibula (4, anterolateral thigh (3, groin (3, jejunum (3, latissimus dorsi (1, and dorsal pedis (1. Vein grafts were used for the artery (6, vein (2, or both (7. The donor veins were the saphenous vein (12 and the external jugular vein (3. The mean length of the grafted veins was 10.8 cm (range: 4–18 cm. Even though complications of congestion occurred in 2 patients, these flaps survived by reexploration. The flap success rate was 15 of 15 (100% of vein grafted free flaps versus 124 of 127 (97.6% of free flaps not requiring vein grafts. To improve the success rate of free tissue transfers combined with vein grafts, securing healthy recipient vessels, meticulous surgical handling, a reliable vascular anastomosis technique, and strict postoperative monitoring are crucial.

  5. Augmented reality based real-time subcutaneous vein imaging system.

    Science.gov (United States)

    Ai, Danni; Yang, Jian; Fan, Jingfan; Zhao, Yitian; Song, Xianzheng; Shen, Jianbing; Shao, Ling; Wang, Yongtian

    2016-07-01

    A novel 3D reconstruction and fast imaging system for subcutaneous veins by augmented reality is presented. The study was performed to reduce the failure rate and time required in intravenous injection by providing augmented vein structures that back-project superimposed veins on the skin surface of the hand. Images of the subcutaneous vein are captured by two industrial cameras with extra reflective near-infrared lights. The veins are then segmented by a multiple-feature clustering method. Vein structures captured by the two cameras are matched and reconstructed based on the epipolar constraint and homographic property. The skin surface is reconstructed by active structured light with spatial encoding values and fusion displayed with the reconstructed vein. The vein and skin surface are both reconstructed in the 3D space. Results show that the structures can be precisely back-projected to the back of the hand for further augmented display and visualization. The overall system performance is evaluated in terms of vein segmentation, accuracy of vein matching, feature points distance error, duration times, accuracy of skin reconstruction, and augmented display. All experiments are validated with sets of real vein data. The imaging and augmented system produces good imaging and augmented reality results with high speed.

  6. Ovarian vein thrombosis in a polytrauma patient.

    Science.gov (United States)

    Toman, Emma; Beaven, Alastair; Balogun, Moji; Porter, Keith

    2015-12-18

    A young mother presented to a major trauma centre following a road traffic collision. Her admission CT traumagram demonstrated liver and renal lacerations, spinal and pelvic fractures with no abnormalities of the ovarian veins. Her inpatient course was uncomplicated other than a sustained, isolated raised C reactive protein. CT of the abdomen 1 week after injury demonstrated stable solid organ injuries and the additional, unexpected finding of a right ovarian vein thrombosis (OVT). A pragmatic approach was taken towards the management of the OVT given the haemorrhagic risk from her traumatic injuries. A multidisciplinary, consultant-led plan was made to slowly increase enoxaparin to a therapeutic dose under close surveillance and to then switch to warfarin following an outpatient consultation with a consultant haematologist. A MR venogram was performed after 3 months of anticoagulation, and this demonstrated complete resolution of the OVT and normal appearances of the ovary.

  7. The great brain versus vein debate.

    Science.gov (United States)

    Menon, Ravi S

    2012-08-15

    From the earliest fMRI experiments, it was quickly appreciated by those working with BOLD at high field that the signal change originated from visible veins whose spatial localization was relatively coarse ("the macrovasculature"), and smaller vessels ("the microvasculature") that were not individually visible in BOLD images. It was expected that a functional brain imaging technique that was predominantly sensitive to the macrovasculature would not have the same effective resolution as one sensitive to the microvasculature. Elimination of the venous signal and enhancement of the microvascular one offered the tantalizing ability to image columnar and lamellar structures in the brain and distinguished fMRI from its predecessor techniques. This article reviews a brief history of how these signal sources were first identified and separated and some of the controversy associated with the "brain versus vein" debate.

  8. Pulmonary vein stenosis: Etiology, diagnosis and management

    Institute of Scientific and Technical Information of China (English)

    Pablo Pazos-López; Cristina García-Rodríguez; Alba Guitián-González; Emilio Paredes-Galán; María ángel; De La Guarda álvarez-Moure; Marta Rodríguez-álvarez; José Antonio Baz-Alonso; Elvis Teijeira-Fernández; Francisco Eugenio Calvo-Iglesias; Andrés í?iguez-Romo

    2016-01-01

    Pulmonary vein stenosis(PVS) is rare condition characterized by a challenging diagnosis and unfavorable prognosis at advance stages. At present, injury from radiofrequency ablation for atrial fibrillation has become the main cause of the disease. PVS is characterized by a progressive lumen size reduction of one or more pulmonary veins that, when hemodynamically significant, may raise lobar capillary pressure leading to signs and symptoms such as shortness of breath, cough, and hemoptysis. Image techniques(transesophageal echocardiography, computed tomography, magnetic resonance and perfusion imaging) are essential to reach a final diagnosis and decide an appropriate therapy. In this regard, series from referral centers have shown that surgical and transcatheter interventions may improve prognosis. The purpose of this article is to review the etiology, assessment and management of PVS.

  9. [Treatment of renal vein thrombosis associated with nephrotic syndrome].

    Science.gov (United States)

    Funami, M; Takaba, T; Tanaka, H; Murakami, A; Kadokura, M; Hori, G; Ishii, J

    1988-06-01

    Renal vein thrombosis is a rare entity in which true incidence is unknown. The disease occurs most frequently in patients with nephrotic syndrome, but it also can occur in the presence of other hypercoagulable state. Two cases of renal vein thrombosis with nephrotic syndrome which were treated by thrombectomy are reported here. One patient was successfully treated by renal vein and inferior vena cava thrombectomy before developing severe pulmonary embolism. The other was treated by renal vein thrombectomy by which fatal shock was able to be prevented. In those cases, immediate operation was indicated, primarily to prevent additional, possibly fatal, pulmonary embolism and also to improve perfusion of the kidney. In the hope of salvaging the kidney, thrombectomy may be the treatment of choice for acute renal vein thrombosis, complication of pulmonary embolism and inferior vena cava thrombosis, right renal vein thrombosis without collateral flow and acute renal vein thrombosis with shock.

  10. A pilot/introducer needle for central vein cannulation.

    Science.gov (United States)

    Suzuki, T; Kanazawa, M; Kinefuchi, Y; Fukuyama, H; Takiguchi, M; Yamamoto, M; Abe, K; Okuda, Y

    1995-12-01

    A kit for safe and easy insertion of a central vein cannula was devised. A small gauge (22 gauge) metal pilot needle was equipped with a Y-shaped hub which had a side-port to accept a small gauge (0.46 mm) Seldinger guide wire. Once the needle reached the vein, guidewire was threaded in through the side-port. There was no need to remove the pilot needle and no need to repeat vein puncture with a larger-bore needle. Three puncture methods were used with the kit: (1) the central approach via the internal jugular vein, (2) the supraclavicular approach via the junction of the internal jugular vein and subclavian vein, and (3) the infraclavicular approach via the subclavian vein. Each method was used on 20 patients, for total of 60 patients, with a high success rate. Less than 3 minutes were required from puncture to catheter insertion. No serious complications were encountered.

  11. Massive hydrothorax following subclavian vein catheterization

    OpenAIRE

    Omar, Hesham R.; fathy, Ahmad; Elghonemy, Mohamed; Rashad, Rania; Helal, Engy; Mangar, Devanand; Camporesi, Enrico

    2010-01-01

    Since the introduction of central venous catheterization for monitoring of the venous pressure, fluid infusion and hyperalimentation, the literature has been full of serious life-threatening complications. Of these complications is the false positioning of the central venous catheter and subsequent development of pleural effusion. In this report we are describing a case of iatrogenic massive pleural effusion following subclavian vein catheterization necessitating intercostal tube drainage and...

  12. Endovascular Radiofrequency Ablation for Varicose Veins

    Science.gov (United States)

    2011-01-01

    Executive Summary Objective The objective of the MAS evidence review was to conduct a systematic review of the available evidence on the safety, effectiveness, durability and cost–effectiveness of endovascular radiofrequency ablation (RFA) for the treatment of primary symptomatic varicose veins. Background The Ontario Health Technology Advisory Committee (OHTAC) met on August 26th, 2010 to review the safety, effectiveness, durability, and cost-effectiveness of RFA for the treatment of primary symptomatic varicose veins based on an evidence-based review by the Medical Advisory Secretariat (MAS). Clinical Condition Varicose veins (VV) are tortuous, twisted, or elongated veins. This can be due to existing (inherited) valve dysfunction or decreased vein elasticity (primary venous reflux) or valve damage from prior thrombotic events (secondary venous reflux). The end result is pooling of blood in the veins, increased venous pressure and subsequent vein enlargement. As a result of high venous pressure, branch vessels balloon out leading to varicosities (varicose veins). Symptoms typically affect the lower extremities and include (but are not limited to): aching, swelling, throbbing, night cramps, restless legs, leg fatigue, itching and burning. Left untreated, venous reflux tends to be progressive, often leading to chronic venous insufficiency (CVI). A number of complications are associated with untreated venous reflux: including superficial thrombophlebitis as well as variceal rupture and haemorrhage. CVI often results in chronic skin changes referred to as stasis dermatitis. Stasis dermatitis is comprised of a spectrum of cutaneous abnormalities including edema, hyperpigmentation, eczema, lipodermatosclerosis and stasis ulceration. Ulceration represents the disease end point for severe CVI. CVI is associated with a reduced quality of life particularly in relation to pain, physical function and mobility. In severe cases, VV with ulcers, QOL has been rated to be as bad

  13. Central Vein Preservation in Critical Venous Access.

    Science.gov (United States)

    Davidson, J; Paul, A; Patel, S; Davenport, M; Ade-Ajayi, N

    2016-08-01

    Introduction The lack of suitable veins in children with critical central venous access requirements is a major obstacle to optimal care and is potentially life-threatening. We present outcomes following the use of vein-preserving (VP) surgical techniques, notably the sheath exchange for tunneled lines (SETL). Materials and Methods A retrospective, single observer analysis of a prospectively maintained departmental logbook as well as the medical records of patients. Two broad groups of central line replacements were identified; those inserted following removal of a previous line and a traditional "plastic-free" (PF) period and those exchanged without such an interval. Results Overall, 19 lines were directly exchanged during the study period and compared with 34 inserted after a PF period. Similar catheter life spans and infection rates were demonstrated in each group; 125 (range, 78-173) days in VP exchanges versus 122 (range, 70-175) days in PF replacements (p = 0.41). Line Sepsis resulting in removal or change of line occurred at 103 (range, 60-147) days in VP group versus 104 (range, 45-164) days in PF (p = 0.73). Conclusion For children with critical venous access requirements, direct line exchange procedures are a robust and reproducible means of vein preservation. The outcomes compare favorably with those following the more traditional removal, a PF period and reinsertion.

  14. Laser photocoagulation for retinal vein occlusion

    Directory of Open Access Journals (Sweden)

    K. A. Mirzabekova

    2015-03-01

    Full Text Available Retinal vein occlusion (RVO is one of the leading causes of permanent vision loss. In adults, central retinal vein occlusion (CRVO occurs in 1.8% while branch retinal vein occlusion (BRVO occurs in 0.2%. Treatment strategy and disease prognosis are determined by RVO type (ischemic/non-ischemic. Despite numerous studies and many current CRVO and BRVO treatment approaches, the management of these patients is still being debated. Intravitreal injections of steroids (triamcinolone acetate, dexamethasone and vascular endothelial growth factor (VEGF inhibitors (bevacizumab, ranibizumab were shown to be fairly effective. However, it is unclear whether anti-VEGF agents are reasonable in ischemic RVOs. Laser photocoagulation remains the only effective treatment of optic nerve head and/or retinal neovascularization. Laser photocoagulation is also indicated for the treatment of macular edema. Both threshold and sub-threshold photocoagulation may be performed. Photocoagulation performed with argon (514 nm, krypton (647 nm, or diode (810 nm laser for macular edema provides similar results (no significant differences. The treatment may be complex and include medication therapy and/or surgery. Medication therapy includes anti-aggregant agents and antioxidants, i.e., emoxypine which may be used in acute RVO as well as in post-thrombotic retinopathy. 

  15. Comparison between mechanical properties of human saphenous vein and umbilical vein

    Directory of Open Access Journals (Sweden)

    Hamedani Borhan

    2012-08-01

    Full Text Available Abstract Background As a main cause of mortality in developed countries, Coronary Artery Disease (CAD is known as silent killer with a considerable cost to be dedicated for its treatment. Coronary Artery Bypass Graft (CABG is a common remedy for CAD for which different blood vessels are used as a detour. There is a lack of knowledge about mechanical properties of human blood vessels used for CABG, and while these properties have a great impact on long-term patency of a CABG. Thus, studying these properties, especially those of human umbilical veins which have not been considered yet, looks utterly necessary. Methods Umbilical vein, as well as human Saphenous vein, are respectively obtained after cesarean and CABG. First, histological tests were performed to investigate different fiber contents of the samples. Having prepared samples carefully, force-displacement results of samples were rendered to real stress–strain measurements and then a fourth-order polynomial was used to prove the non-linear behavior of these two vessels. Results Results were analyzed in two directions, i.e. circumferentially and longitudinally, which then were compared with each other. The comparison between stiffness and elasticity of these veins showed that Saphenous vein’s stiffness is much higher than that of umbilical vein and also, it is less stretchable. Furthermore, for both vessels, longitudinal stiffness was higher than that of circumferential and in stark contrast, stretch ratio in circumferential direction came much higher than longitudinal orientation. Conclusion Blood pressure is very high in the region of aorta, so there should be a stiff blood vessel in this area and previous investigations showed that stiffer vessels would have a better influence on the flow of bypass. To this end, the current study has made an attempt to compare these two blood vessels’ stiffness, finding that Saphenous vein is stiffer than umbilical vein which is somehow as stiff as

  16. Non-cuffed dual lumen catheters in the external jugular veins versus other central veins for hemodialysis patients.

    Science.gov (United States)

    Moini, Majid; Rasouli, Mohammad R; Kenari, Mohammad Mahmoodzadeh; Mahmoodi, Hamid Reza

    2009-01-01

    To compare prospective between insertion of non-cuffed dual lumen catheter in the external jugular vein and other central veins for hemodialysis (HD), we studied 68 chronic dialysis patients randomly allocated into two groups: one with external jugular vein catheterization as access for HD and another with other central venous catheterization, internal jugular or subclavian vein. Our results showed there were no significant differences regarding successful cannulation, com-plications, total numbers of dialysis, development of pain and infection at the site of cannulation, patency rate of the catheters, and efficacy of hemodialysis between both groups. In addition, the patency of the catheter in the external jugular vein was not affected by previous cannulation of other central veins. In contrast, there was a significant correlation between numbers of attempts for cannulation in both groups and development of hematoma and infection, (pvein may be an alternative for other central veins for insertion of temporary non-cuffed hemodialysis catheter.

  17. Quantification of deep medullary veins at 7 T brain MRI

    Energy Technology Data Exchange (ETDEWEB)

    Kuijf, Hugo J.; Viergever, Max A.; Vincken, Koen L. [University Medical Center Utrecht, Image Sciences Institute, Utrecht (Netherlands); Bouvy, Willem H.; Razoux Schultz, Tom B.; Biessels, Geert Jan [University Medical Center Utrecht, Department of Neurology, Brain Center Rudolf Magnus, Utrecht (Netherlands); Zwanenburg, Jaco J.M. [University Medical Center Utrecht, Image Sciences Institute, Utrecht (Netherlands); University Medical Center Utrecht, Department of Radiology, Utrecht (Netherlands)

    2016-10-15

    Deep medullary veins support the venous drainage of the brain and may display abnormalities in the context of different cerebrovascular diseases. We present and evaluate a method to automatically detect and quantify deep medullary veins at 7 T. Five participants were scanned twice, to assess the robustness and reproducibility of manual and automated vein detection. Additionally, the method was evaluated on 24 participants to demonstrate its application. Deep medullary veins were assessed within an automatically created region-of-interest around the lateral ventricles, defined such that all veins must intersect it. A combination of vesselness, tubular tracking, and hysteresis thresholding located individual veins, which were quantified by counting and computing (3-D) density maps. Visual assessment was time-consuming (2 h/scan), with an intra-/inter-observer agreement on absolute vein count of ICC = 0.76 and 0.60, respectively. The automated vein detection showed excellent inter-scan reproducibility before (ICC = 0.79) and after (ICC = 0.88) visually censoring false positives. It had a positive predictive value of 71.6 %. Imaging at 7 T allows visualization and quantification of deep medullary veins. The presented method offers fast and reliable automated assessment of deep medullary veins. (orig.)

  18. Automated detection of periventricular veins on 7 T brain MRI

    Science.gov (United States)

    Kuijf, Hugo J.; Bouvy, Willem H.; Zwanenburg, Jaco J. M.; Viergever, Max A.; Biessels, Geert Jan; Vincken, Koen L.

    2015-03-01

    Cerebral small vessel disease is common in elderly persons and a leading cause of cognitive decline, dementia, and acute stroke. With the introduction of ultra-high field strength 7.0T MRI, it is possible to visualize small vessels in the brain. In this work, a proof-of-principle study is conducted to assess the feasibility of automatically detecting periventricular veins. Periventricular veins are organized in a fan-pattern and drain venous blood from the brain towards the caudate vein of Schlesinger, which is situated along the lateral ventricles. Just outside this vein, a region-of- interest (ROI) through which all periventricular veins must cross is defined. Within this ROI, a combination of the vesselness filter, tubular tracking, and hysteresis thresholding is applied to locate periventricular veins. All detected locations were evaluated by an expert human observer. The results showed a positive predictive value of 88% and a sensitivity of 95% for detecting periventricular veins. The proposed method shows good results in detecting periventricular veins in the brain on 7.0T MR images. Compared to previous works, that only use a 1D or 2D ROI and limited image processing, our work presents a more comprehensive definition of the ROI, advanced image processing techniques to detect periventricular veins, and a quantitative analysis of the performance. The results of this proof-of-principle study are promising and will be used to assess periventricular veins on 7.0T brain MRI.

  19. Abdominal thromboses of splanchnic, renal and ovarian veins.

    Science.gov (United States)

    De Stefano, Valerio; Martinelli, Ida

    2012-09-01

    Thromboses of abdominal veins outside the iliac-caval axis are rare but clinically relevant. Early deaths after splanchnic vein thrombosis occur in 5-30% of cases. Sequelae can be liver failure or bowel infarction after splanchnic vein thrombosis, renal insufficiency after renal vein thrombosis, ovarian infarction after ovarian vein thrombosis. Local cancer or infections are rare in Budd-Chiari syndrome, and common for other sites. Inherited thrombophilia is detected in 30-50% of patients. Myeloproliferative neoplasms are the main cause of splanchnic vein thrombosis: 20-50% of patients have an overt myeloproliferative neoplasm and/or carry the molecular marker JAK2 V617F. Renal vein thrombosis is closely related to nephrotic syndrome; finally, ovarian vein thrombosis can complicate puerperium. Heparin is used for acute treatment, sometimes in conjunction with systemic or local thrombolysis. Vitamin K-antagonists are recommended for 3-6 months, and long-term in patients with Budd-Chiari syndrome, unprovoked splanchnic vein thrombosis, or renal vein thrombosis with a permanent prothrombotic state such as nephrotic syndrome.

  20. Development of HIFU Therapy System for Lower Extremity Varicose Veins

    Science.gov (United States)

    Ota, Ryuhei; Suzuki, Jun; Yoshinaka, Kiyoshi; Deguchi, Juno; Takagi, Shu; Miyata, Tetsuro; Matsumoto, Yoichiro

    2009-04-01

    High-intensity focused ultrasound (HIFU) treatment utilizing microbubbles was investigated in the present study. It is known that microbubbles have the potential to enhance the heating effects of an ultrasound field. In this study, the heat accompanying microbubble oscillation was used to occlude varicose veins. Alteration of veins was observed after ultrasound irradiation. Veins were resected by stripping. In this study, two vein conditions were adopted during HIFU irradiation; non-compressed and compressed. Compressing the vein was expected to improve occlusion by rubbing the altered intima under compressed conditions. The frequency of the ultrasound was 1.7 MHz, the intensity at the focus was 2800 W/cm2, and the irradiation time was 20 s. In this study, the contrast agent Levovist® was chosen as a microbubble source, and the void fraction (ratio of total gas volume to liquid) in the vein was fixed at 10-5. Under non-compressed conditions, changes were observed only at the adventitia of the vein anterior wall. In contrast, under compressed conditions, changes were observed from the intima to the adventitia of both the anterior and posterior walls, and they were partly stuck together. In addition, more experiments with hematoxylin-eosin staining suggested that the changes in the vein were more substantial under the latter conditions. From these results, it was confirmed that the vein was occluded more easily with vein compression.

  1. Computed tomographic evaluation of the portal vein in the hepatomas

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Kee Hyung; Lee, Seung Chul; Bae, Man Gil; Seo, Heung Suk; Kim, Soon Yong; Lee, Min Ho; Kee, Choon Suhk; Park, Kyung Nam [Hanyang University College of Medicine, Seoul (Korea, Republic of)

    1986-10-15

    Computed tomography and pornographic findings of 63 patients with hepatoma, undergone hepatic angiography and superior mesenteric pornography for evaluation of tumor and thrombosis of portal vein and determination of indication of transcatheter arterial embolization for palliative treatment of hepatoma from April, 85 to June, 86 in Hanyang university hospital, were reviewed. The results were as follows: 1. In 36 cases, portal vein thrombosis was detected during photography. Nineteen of 37 cases which revealed localized hepatoma in the right lobe of the liver showed portal vein thrombosis; 9 of 11 cases of the left lobe; 8 of 14 cases which were involved in entire liver revealed thrombosis. One case localized in the caudate lobe showed no evidence of invasion to portal vein. 2. Twenty-four of 34 cases with diffuse infiltrative hepatoma revealed portal vein thrombosis and the incidence of portal vein thrombosis in this type were higher than in the cases of the nodular type. 3. The portal vein thrombosis appeared as filling defects of low density in the lumen of the portal veins in CT and they did not reveal contrast enhancement. 4. CT revealed well the evidence of obstructions in the cases of portal vein thrombosis and the findings were well-corresponded to the findings of the superior mesenteric photography. 5. Five of the cases of the portal vein thrombosis were missed in the CT and the causes were considered as due to partial volume effect of enhanced portal vein with partial occlusion or arterioportal shunts. 6. Six of 13 cases with occlusion of main portal vein showed cavernous transformation and they were noted as multiple small enhanced vascularities around the porta hepatis in the CT. According to the results, we conclude that CT is a useful modality to detect the changes of the portal veins in the patients of the hepatoma.

  2. Portal vein and mesenteric vein gas: CT features; Aeroportie ety aeromesenterie: donnees TDM

    Energy Technology Data Exchange (ETDEWEB)

    Schmutz, G.; Fournier, L.; Le Pennec, V.; Provost, N.; Hue, S.; Phi, I.N. [Centre Hospitalier Universitaire, 14 - Caen (France)

    2001-04-01

    Portal vein and mesenteric vein gas are unusual conditions with a complex and nuclear pathogenesis. Mesenteric ischemia frequently causes such pathological conditions but a variety of other causes are known: inflammatory bowel disease, bowel distension, traumatic and iatrogenic injury, intra-abdominal sepsis, and idiopathic conditions. This pathologic entity is favored by intestinal wall alterations, bowel distension and sepsis. The prognosis is frequently fatal, especially when associated with extended bowel necrosis although in the majority of the cases, outcome is favorable without surgery. (author)

  3. Endovascular Laser Therapy for Varicose Veins

    Science.gov (United States)

    2010-01-01

    Executive Summary Objective The objective of the MAS evidence review was to conduct a systematic review of the available evidence on the safety, effectiveness, durability and cost–effectiveness of endovascular laser therapy (ELT) for the treatment of primary symptomatic varicose veins (VV). Background The Ontario Health Technology Advisory Committee (OHTAC) met on November 27, 2009 to review the safety, effectiveness, durability and cost-effectiveness of ELT for the treatment of primary VV based on an evidence-based review by the Medical Advisory Secretariat (MAS). Clinical Condition VV are tortuous, twisted, or elongated veins. This can be due to existing (inherited) valve dysfunction or decreased vein elasticity (primary venous reflux) or valve damage from prior thrombotic events (secondary venous reflux). The end result is pooling of blood in the veins, increased venous pressure and subsequent vein enlargement. As a result of high venous pressure, branch vessels balloon out leading to varicosities (varicose veins). Symptoms typically affect the lower extremities and include (but are not limited to): aching, swelling, throbbing, night cramps, restless legs, leg fatigue, itching and burning. Left untreated, venous reflux tends to be progressive, often leading to chronic venous insufficiency (CVI). A number of complications are associated with untreated venous reflux: including superficial thrombophlebitis as well as variceal rupture and haemorrhage. CVI often results in chronic skin changes referred to as stasis dermatitis. Stasis dermatitis is comprised of a spectrum of cutaneous abnormalities including edema, hyperpigmentation, eczema, lipodermatosclerosis and stasis ulceration. Ulceration represents the disease end point for severe CVI. CVI is associated with a reduced quality of life particularly in relation to pain, physical function and mobility. In severe cases, VV with ulcers, QOL has been rated to be as bad or worse as other chronic diseases such as

  4. Reproducibility of dorsal hand vein responses to phenylephrine and prostaglandin F2 alpha using the dorsal hand vein compliance method.

    Science.gov (United States)

    Schindler, C; Grossmann, M; Dobrev, D; Francke, K; Ravens, U; Kirch, W

    2003-03-01

    Assessment of drug-induced venodilation by the dorsal hand vein compliance method requires stable constriction of the vein. This study was designed to investigate intra- and intersubject reproducibility of the venous preconstriction technique in response to phenylephrine and prostaglandin F2 alpha and to determine the influence of basal vein size. Twelve healthy male nonsmokers participated in a prospective cross-over study. Inter- and intrasubject variability was tested in response to phenylephrine and PGF2 alpha on different study days in the same hand vein. The dose of the respective constrictor causing approximately 80% constriction of the vein (ED80) was determined and infused for another 100 minutes. Actual vein size was measured every 5 minutes. Coefficient of variation and regression analyses were performed to analyze influence of vessel size on ED80 of the respective constrictor. Adjusted constriction levels were stable and well reproducible in all subjects. The intersubject coefficient of variation of ED80 ranged from 0.9% to 6.7% for phenylephrine and from 0.9% to 6.9% for PGF2 alpha. Whereas responses to phenylephrine were independent of basal vein diameter, there was a positive correlation between ED80 of PGF2 alpha and basal vein size. Thus, the hand vein compliance method is a suitable method to study dilatory responses in phenylephrine- or PGF2 alpha-constricted veins with considerable interindividual but small intraindividual variability. However, in such studies, phenylephrine appears to be a more reliable tool than PGF2 alpha.

  5. Internal Jugular Vein Entrapment in a Multiple Sclerosis Patient

    Directory of Open Access Journals (Sweden)

    Marian Simka

    2012-01-01

    Full Text Available We describe a multiple sclerosis patient presenting with compression of the internal jugular vein caused by aberrant omohyoid muscle. Previously this patient underwent balloon angioplasty of the same internal jugular vein. Ten months after this endovascular procedure, Doppler sonography revealed totally collapsed middle part of the treated vein with no outflow detected. Still, the vein widened and the flow was restored when the patient’s mouth opened. Thus, the abnormality was likely to be caused by muscular compression. Surgical exploration confirmed that an atypical omohyoid muscle was squeezing the vein. Consequently, pathological muscle was transected. Sonographic control three weeks after surgical procedure revealed a decompressed vein with fully restored venous outflow. Although such a muscular compression can be successfully managed surgically, future research has to establish its clinical relevance.

  6. Electro-oculogram of Retinal Vein Occlusion

    Institute of Scientific and Technical Information of China (English)

    1994-01-01

    Twenty five cases, including 26 eyes with retinal vein occlusion (RVO) were examined by means of the electro-oculogram. The results showed that 23 of the 26 eyes suffering from RVO exhibited abnormalities of the electro-oculogram (EOG). The potential difference and Arden ratio in the RVO eyes were lower than those in the normal eyes (P<0.01). The more the visual acuity of ill eyes was decreased, the higher the abnormal rate of EOG in ill eyes was. 14 eyes had the visual acuity less than 0.1, whose EOGs ...

  7. An anomaly in persistent right umbilical vein of portal vein diagnosed by ultrasonography

    Institute of Scientific and Technical Information of China (English)

    Shigeo Nakanishi; Katsuya Shiraki; Kouji Yamamoto; Mutsumi Koyama; Takeshi Nakano

    2005-01-01

    AIM: To detect the anomaly in the persistent right umbilical vein (PRUV) of portal vein (PV) with deviation of the ligamentum tere and left-sided gallbladder.METHODS: A total of 5783 candidates for routine analysis were evaluated for hepatic vascular abnormalities by ultrasonography.RESULTS: Ten candidates (0.17%) had a portal vein anomaly with a rightward-deviated ligamentum tere.The blood-flow velocity in the PRUV of the portal vein (17.7±3.0 cm/s) of the 10 cases was similar to that of the right anterior portal trunk (17.6±4.1 cm/s). However,the vessel diameter of the PRUV (ψ12.4±4.4 mm) was larger than the right anterior portal trunk (ψ6.1±0.9 mm).Therefore, flow volume in the anomalous portion (0.97±0.30 L/min) was more than that in the right anterior portal trunk (0.18±0.05 L/min).CONCLUSION: The anomaly plays an important role in intra-hepatic PV flow.

  8. Image Quality Enhancement Using the Direction and Thickness of Vein Lines for Finger-Vein Recognition

    Directory of Open Access Journals (Sweden)

    Young Ho Park

    2012-10-01

    Experimental results from application of our proposed image enhancement method show that the equal error rate (EER of finger‐vein recognition decreases to approximately 0.4% in the case of a local binary pattern‐ based recognition and to approximately 0.3% in the case of a wavelet transform‐based recognition.

  9. Advantages of using volar vein repair in finger replantations.

    Science.gov (United States)

    Mersa, Berkan; Kabakas, Fatih; Pürisa, Hüsrev; Özçelik, Ismail Bülent; Yeşiloğlu, Nebil; Sezer, Ilker; Tunçer, Serdar

    2014-01-01

    Providing adequate venous outflow is essential in finger replantation surgeries. For a successful result, the quality and quantity of venous repairs should be adequate to drain arterial inflow. The digital dorsal venous plexus is a reliable source of material for venous repairs. Classically, volar digital veins have been used only when no other alternative was available. However, repairing volar veins to augment venous outflow has a number of technical advantages and gives a greater chance of survival. Increasing the repaired vein:artery ratio also increases the success of replantation. The volar skin, covering the volar vein, is less likely to be avulsed during injury and is also less likely to turn necrotic, than dorsal skin, after the replantation surgery. Primary repair of dorsal veins can be difficult due to tightness ensuing from arthrodesis of the underlying joint in flexion. In multiple finger replantations, repairing the volar veins after arterial repair and continuing to do so for each finger in the same way without changing the position of the hand and surgeon save time. In amputations with tissue loss, the size discrepancy is less for volar veins than for dorsal veins. We present the results of 366 finger replantations after volar vein repairs.

  10. Radiation Retinopathy Associated with Central Retinal Vein Occlusion

    Institute of Scientific and Technical Information of China (English)

    Yan; Liu; FengWen

    2007-01-01

    Purpose: To report a case of radiation retinopathy associated with central retinal vein occlusion.Methods: The clinical features and fundus fluorescein angiography of this case were analyzed.Results: The patient had been treated with radiotherapy for her nasopharyngeal carcinoma, and presented with sudden visual loss in the left eye. The funduscopic examination and fluorescein angiography showed the features of radiation retinopathy in both eyes, and central retinal vein occlusion in the left eye.Conclusions: Radiation retinopathy can be associated with central retinal vein occlusion in the same eye, and it seems that the endothelial cell loss caused by radiation retinopathy may lead to retinal vein occlusion.

  11. Evaluation of different systems for clinical quantification of varicose veins.

    Science.gov (United States)

    Cornu-Thénard, A; De Vincenzi, I; Maraval, M

    1991-04-01

    One hundred twenty-five lower limbs with varicose veins were studied clinically, essentially by palpation. Two specialists in venous pathology scored the severity of the varicose veins from 0 to 20. Comparison between the different clinical parameters and the scores of the specialists showed that two systems of clinical quantification gave good results and were easy to use. One system is the maximum diameter of the largest varicose vein; the other system is the sum of maximum diameters over 7 sections (3 for thigh, 3 for leg, 1 for foot). This latter system gives a more precise evaluation of the clinical severity of the varicose veins.

  12. Can deep vein thrombosis be predicted after varicose vein operation in women in rural areas?

    Directory of Open Access Journals (Sweden)

    Marcin Warot

    2014-09-01

    Full Text Available [b]Introduction[/b]. Chronic venous disease is a group of symptoms caused by functional and structural defects of the venous vessels. One of the most common aspects of this disease is the occurrence of varicose veins. There are many ways of prevention and treatment of varicose veins, but in Poland the leading one is still surgery. As in every medical procedure there is the possibility of some complications. One of them is deep vein thrombosis (DVT. The diagnosis of DVT can be difficult, especially when access to a specialist is limited, such as in case of rural patients. [b]The aim of the study.[/b] The aim of the study was estimation of the influence of LMWH primary prophylaxis on the formation of postoperative DVT, as well as sensitivity and specificity of clinical examination and D-dimer value in diagnosis of postoperative DVT in women. [b]Materials and methods[/b]. The study was conducted in a group of 93 women operated on in the Department of General, Vascular Surgery and Angiology at the Karol Marcinkowski University of Medical Sciences in Poznań, Poland. The patients had undergone a varicose vein operation and were randomly divided into two groups: A – 48 women receiving LMWH during two days of the perioperative period, B – 45 women receiving LMWH during seven days of the perioperative period. [b]Results[/b]. There was no significant difference in the postoperative DVT complications in both groups. The value of D-dimer > 0.987 mcg/ml and swelling > 1.5 cm of shin (in comparison to the preoperative period plays a significant role in diagnosis of DVT. [b]Conclusions[/b]. The extended primary prophylaxis with LMWH does not affect the amount or quality of thrombotic complications after varicose vein operation. If the DVT occurs, the evaluation of the D – dimer and careful clinical examination can be a useful method for its diagnosis.

  13. Multiple abdominal veins thrombosis secondary to protein s deficiency - a case report.

    Science.gov (United States)

    Kodali, Venkata Umakant; Borra, Seshulakshmi; Mandarapu, Surendra Babu; Sanda, Mallikarjuna Rao; Bolla, Srinivasa Rao

    2014-06-01

    Abdominal venous thrombosis may present either as Budd-Chiari syndrome (BCS) caused by hepatic vein or proximal inferior vena cava (IVC) obstruction or as an extra hepatic portal obstruction (EHPVO) caused by Portal vein thrombosis or mesenteric vein thrombosis, but a mixed involvement is uncommon. Multiple abdominal venous obstructions presenting with thrombosis of hepatic vein, IVC, portal vein and renal vein are very rarely seen . We are reporting a rare case with thrombosis of IVC, hepatic vein, portal vein and renal vein, with protein S and protein C deficiencies, which was managed by giving anticoagulant therapy.

  14. Biomolecular mechanisms in varicose veins development.

    Science.gov (United States)

    Segiet, Oliwia Anna; Brzozowa-Zasada, Marlena; Piecuch, Adam; Dudek, Damian; Reichman-Warmusz, Edyta; Wojnicz, Romuald

    2015-02-01

    Varicose veins (VVs) can be described as tortuous and dilated palpable veins, which are more than 3 mm in diameter. They are one of the clinical presentations of chronic venous disorders, which are a significant cause of morbidity. The prevalence of VVs has been estimated at 25-33% in women and 10-20% in men and is still increasing at an alarming rate. Family history, older age, female, pregnancy, obesity, standing occupations, and a history of deep venous thrombosis are the predominant risk factors. A great amount of factors are implicated in the pathogenesis of VVs, including changes in hydrostatic pressure, valvular incompetence, deep venous obstruction, ineffective function of calf muscle pump, biochemical and structural alterations of the vessel wall, extracellular matrix abnormalities, impaired balance between growth factors or cytokines, genetic alterations, and several other mechanisms. Nevertheless, the issue of pathogenesis in VVs is still not completely known, even if a great progress has been made in understanding their molecular basis. This kind of studies appears promising and should be encouraged, and perhaps the new insight in this matter may result in targeted therapy or possibly prevention.

  15. Arterialization and anomalous vein wall remodeling in varicose veins is associated with upregulated FoxC2-Dll4 pathway.

    Science.gov (United States)

    Surendran, Sumi; S Ramegowda, Kalpana; Suresh, Aarcha; Binil Raj, S S; Lakkappa, Ravi Kumar B; Kamalapurkar, Giridhar; Radhakrishnan, N; C Kartha, Chandrasekharan

    2016-04-01

    Varicose veins of lower extremities are a heritable common disorder. Mechanisms underlying its pathogenesis are still vague. Structural failures such as valve weakness and wall dilatation in saphenous vein result in venous retrograde flow in lower extremities of body. Reflux of blood leads to distal high venous pressure resulting in distended veins. In an earlier study, we observed a positive association between c.-512C>T FoxC2 gene polymorphism and upregulated FoxC2 expression in varicose vein specimens. FoxC2 overexpression in vitro in venous endothelial cells resulted in the elevated mRNA expression of arterial endothelial markers such as Delta-like ligand 4 (Dll4) and Hairy/enhancer-of-split related with YRPW motif protein 2 (Hey2). We hypothesized that an altered FoxC2-Dll4 signaling underlies saphenous vein wall remodeling in patients with varicose veins. Saphenous veins specimens were collected from 22 patients with varicose veins and 20 control subjects who underwent coronary artery bypass grafting. Tissues were processed for paraffin embedding and sections were immunostained for Dll4, Hey2, EphrinB2, α-SMA, Vimentin, and CD31 antigens and examined under microscope. These observations were confirmed by quantitative real-time PCR and western blot analysis. An examination of varicose vein tissue specimens by immunohistochemistry indicated an elevated expression of Notch pathway components, such as Dll4, Hey2, and EphrinB2, and smooth muscle markers, which was further confirmed by gene and protein expression analyses. We conclude that the molecular alterations in Dll4-Hey2 signaling are associated with smooth muscle cell hypertrophy and hyperplasia in varicose veins. Our observations substantiate a significant role for altered FoxC2-Dll4 signaling in structural alterations of saphenous veins in patients with varicose veins.

  16. 65例志愿者颈静脉形态及血流动力学研究%The morphologic and hemodynamic abnormalities study of jugular vein in volunteers

    Institute of Scientific and Technical Information of China (English)

    唐乐梅; 刘铁利; 孙博; 宁殿秀; 苗延巍

    2015-01-01

    Objective To investigate jugular vein morphological changes with three dimension phase contrast magnetic resonance venography(3D PC MRV),and to explore hemodynamic features using MR phase contrast cine (MR PC cine).Methods Sixty-five healthy volunteers performed 3D PC MRV and MR PC-cine sannings.MRV ranged from torcular herophili to brachiocephalic veins, and the raw data of PC-cine was acquired at cervical 2-3(C2-C3)level perpendicular to the Jugular veins(JVs)with the maximum encoding velocity of 50 cm/sec.Jugular vein showing absent or tip shape(cross-sectional area less than 12.5 mm2 )was considered abnormal,and flat,crescent,oval,round shapes were considered normal.Data of PC-cine was processed by computer to evaluate the hemodynamic features.Results Nine (13.85%)of 65 cases were abnormal that unilateral jugular vein showing needle-pointed narrow or absent,and 8 cases on the left,and one case on the right;Weak correlation was found between jugular veins pattern and the age.The right sided values in volunteers were higher than that of the left side.Conclusion The morphology and hemodynamics of jugular veins in volunteers showed significant difference between sides,and weak correlation is found between the morphology and aging.%目的:应用三维相位对比磁共振血管成像技术(3D PC MRV)及 MR 相位对比电影法(MR PC-cine)探讨正常人颈静脉的形态及血流动力学特征。方法65例志愿者进行颈静脉3D PC MRV 及 MR PC-cine 扫描。扫描范围为窦汇至头臂静脉水平;颈静脉形态的判断标准如下:颈静脉缺如、针尖状狭窄(横截面积<12.5 mm2)、局部不显示视为异常;扁平状、新月形、椭圆形、圆形视为正常表现。MR PC-cine 序列扫描定位于 C2~C3水平,与颈静脉走行方向垂直,速率编码(VENC)为50 cm/s。结果65例志愿者中,9例(13.85%)出现单侧颈静脉针尖状狭窄或缺如,左侧(8例)异常的比例高于右侧(1例)(P <0.05);颈静脉形态异常

  17. A Tight Spot After Pulmonary Vein Catheter Ablation

    NARCIS (Netherlands)

    Amir, Rabia; Yeh, Lu; Montealegre-Gallegos, Mario; Saraf, Rabya; Matyal, Robina; Mahmood, Feroze

    2016-01-01

    A 52-YEAR-OLD woman with a history of embolic stroke due to paroxysmal atrial fibrillation was referred to the authors’ institution for epicardial surgical pulmonary vein isolation with left atrial appendage resection. The patient had 2 previous failed pulmonary vein catheter ablations. Dense fibrou

  18. Pressure-diameter relationship in the human greater saphenous vein

    NARCIS (Netherlands)

    Stooker, W; Gok, M; Sipkema, P; Niessen, HWM; Baidoshvili, A; Westerhof, N; Jansen, EK; Wildevuur, CRH; Eijsman, L

    2003-01-01

    Background. Compliance of artificial and autologous vascular grafts is related to future patency. We investigated whether differences in compliance exist between saphenous vein grafts derived from the upper or lower leg, which might indicate upper or lower leg saphenous vein preference in coronary a

  19. Endovascular exclusion of a large external iliac vein aneurysm.

    Science.gov (United States)

    Todorov, Mina; Hernandez, Diego

    2013-07-01

    Iliac vein aneurysms are uncommon, and there is no consensus on optimal treatment. We present a case of venous exclusion using an endovascular approach. To our knowledge, this is the first reported case of a large external iliac vein aneurysm treated endovascularly. We have demonstrated the feasibility of this approach with satisfactory 1-year follow-up.

  20. The anatomy of the iliolumbar vein. A cadaver study.

    Science.gov (United States)

    Jasani, Vinay; Jaffray, David

    2002-09-01

    We carried out a cadaver study of 16 iliolumbar veins in order to define the surgical anatomy. Two variants were found; a single vein at a mean distance of 3.74 cm from the inferior vena cava (11 of 16) and two separate draining veins at a mean distance from the vena cava of 2.98 cm for the proximal and 6.24 cm for the distal stem (5 of 16). Consistently, the proximal vein tore on attempted medial retraction of the great vessels. The mean length of the vein was 1.6 cm and its mean width 1.07 cm. Three stems were shorter than 0.5 cm. Two or more tributaries usually drained the iliacus and psoas muscles, and the fifth lumbar vertebral body. The obturator nerve crossed all veins superficially at a mean of 2.76 cm lateral to the mouth. In four of these, this distance was less than 1.5 cm. Usually, the lumbosacral trunk crossed deep, at a mean distance of 2.5 cm lateral to the mouth, but in three veins, this distance was 1 cm or less. Our findings emphasise the need for proper dissection of the iliolumbar vein before ligature during exposure of the anterior lumbar spine.

  1. Portal vein embolization induces compensatory hypertrophy of remnant liver

    Institute of Scientific and Technical Information of China (English)

    Jing-Yao Huang; Wei-Zhu Yang; Jian-Jun Li; Na Jiang; Qu-Bin Zheng

    2006-01-01

    AIM: To evaluate the effectiveness and safety of different portal vein branch embolization agents in inducing compensatory hypertrophy of the remnant liver and to offer a theoretic basis for clinical portal vein branch embolization.METHODS: Forty-one adult dogs were included in the experiment and divided into four groups. Five dogs served as a control group, 12 as a gelfoam group, 12as a coil-gelfoam group and 12 as an absolute ethanol group. Left portal vein embolization was performed in each group. The results from the embolization in each group using different embolic agents were compared.The safety of portal vein embolization (PVE) was evaluated by liver function test, computed tomography (CT) and digital subtraction angiography (DSA) of liver and portal veins. Statistical test of variance was performed to analyze the results.RESULTS: Gelfoam used for PVE was inefficient in recanalization of portal vein branch 4 wk after the procedure. The liver volume in groups of coil-gelfoam and absolute ethanol increased 25.1% and 33.18%,respectively. There was no evidence of recanalization of embolized portal vein, hepatic dysfunction, and portal hypertension in coil-gelfoam group and absolute ethanol group.CONCOUSION: Portal vein branch embolization using absolute ethanol and coil-gelfoam could induce atrophy of the embolized lobes and compensatory hypertrophy of the remnant liver. Gelfoam is an inefficient agent.

  2. Endovascular management for significant iatrogenic portal vein bleeding.

    Science.gov (United States)

    Kim, Jong Woo; Shin, Ji Hoon; Park, Jonathan K; Yoon, Hyun-Ki; Ko, Gi-Young; Gwon, Dong Il; Kim, Jin Hyoung; Sung, Kyu-Bo

    2017-01-01

    Background Despite conservative treatment, hemorrhage from an intrahepatic branch of the portal vein can cause hemodynamic instability requiring urgent intervention. Purpose To retrospectively report the outcomes of hemodynamically significant portal vein bleeding after endovascular management. Material and Methods During a period of 15 years, four patients (2 men, 2 women; median age, 70.5 years) underwent angiography and embolization for iatrogenic portal vein bleeding. Causes of hemorrhage, angiographic findings, endovascular treatment, and complications were reported. Results Portal vein bleeding occurred after percutaneous liver biopsy (n = 2), percutaneous radiofrequency ablation (n = 1), and percutaneous cholecystostomy (n = 1). The median time interval between angiography and percutaneous procedure was 5 h (range, 4-240 h). Common hepatic angiograms including indirect mesenteric portograms showed active portal vein bleeding into the peritoneal cavity with (n = 1) or without (n = 2) an arterioportal (AP) fistula, and portal vein pseudoaneurysm alone with an AP fistula (n = 1). Successful transcatheter arterial embolization (n = 2) or percutaneous transhepatic portal vein embolization (n = 2) was performed. Embolic materials were n-butyl cyanoacrylate alone (n = 2) or in combination with gelatin sponge particles and coils (n = 2). There were no major treatment-related complications or patient mortality within 30 days. Conclusion Patients with symptomatic or life-threatening portal vein bleeding following liver-penetrating procedures can successfully be managed with embolization.

  3. [Treatment of pulmonary vein stenosis secondary to radiofrequency ablation].

    Science.gov (United States)

    Ferrero Guadagnoli, Adolfo; Contreras, Alejandro E; Leonardi, Carlos R; Ballarino, Miguel A; Atea, Leonardo; Peirone, Alejandro R

    2014-01-01

    Isolation of the pulmonary veins by applying radiofrequency is an effective treatment for atrial fibrillation. One of the potential complications with higher clinical compromise utilizing this invasive technique is the occurrence of stenosis of one or more pulmonary veins. This complication can be treated by angioplasty with or without stent implantation, with an adequate clinical improvement, but with a high rate of restenosis.

  4. Dorzolamide increases retinal oxygen tension after branch retinal vein occlusion

    DEFF Research Database (Denmark)

    Noergaard, Michael Hove; Bach-Holm, Daniella; Scherfig, Erik;

    2008-01-01

    To study the effect of dorzolamide on the preretinal oxygen tension (RPO(2)) in retinal areas affected by experimental branch retinal vein occlusion (BRVO) in pigs.......To study the effect of dorzolamide on the preretinal oxygen tension (RPO(2)) in retinal areas affected by experimental branch retinal vein occlusion (BRVO) in pigs....

  5. Quantification of deep medullary veins at 7 T brain MRI

    NARCIS (Netherlands)

    Kuijf, Hugo J.; Bouvy, Willem H.; Zwanenburg, Jaco J M; Schultz, Tom B Razoux; Viergever, Max A.; Vincken, Koen L.; Biessels, Geert Jan

    2016-01-01

    Objectives: Deep medullary veins support the venous drainage of the brain and may display abnormalities in the context of different cerebrovascular diseases. We present and evaluate a method to automatically detect and quantify deep medullary veins at 7 T. Methods: Five participants were scanned twi

  6. Finger-vein image separation algorithms and realization with MATLAB

    Science.gov (United States)

    Gao, Xiaoyan; Ma, Junshan; Wu, Jiajie

    2010-10-01

    According to the characteristics of the finger-vein image, we adopted a series of methods to enhance the contrast of the image in order to separate the finger-vein areas from the background areas, and made prepare for the subsequent research such as feature extraction and recognition processing . The method consists of three steps: denoising, contrast enhancement and image binarization. In denoising, considering the relationship between gray levels in the adjacent areas of the finger-vein image, we adopted the Gradient Inverse Weighted Smoothing method. In contrast enhancement, we improved the conventional High Frequency Stress Filtering method and adopted a method which combined the traditional High Frequency Stress Filtering algorithm together with the Histogram Equalization. With this method, the contrast of the finger-vein area and the background area has been enhanced significantly. During the binarization process, after taking the differences of the gray levels between the different areas of the finger-vein image into consideration, we proposed a method which combined the binarization by dividing the image into several segments and the Morphological Image Processing means. Our experiment results show that after a series of processing mentioned above by using MATLAB, the finger-vein areas can be separated from the background areas obviously. We can get a vivid figure of the finger-vein which provided some references for the following research such as finger-vein image feature extraction, matching and identification.

  7. A study of images of Projective Angles of pulmonary veins

    Energy Technology Data Exchange (ETDEWEB)

    Wang Jue [Beijing Anzhen Hospital, Beijing (China); Zhaoqi, Zhang [Beijing Anzhen Hospital, Beijing (China)], E-mail: zhaoqi5000@vip.sohu.com; Yu Wei; Miao Cuilian; Yan Zixu; Zhao Yike [Beijing Anzhen Hospital, Beijing (China)

    2009-09-15

    Aims: In images of magnetic resonance and computed tomography (CT) there are visible angles between pulmonary veins and the coronary, transversal or sagittal section of body. In this study these angles are measured and defined as Projective Angles of pulmonary veins. Several possible influential factors and characters of distribution are studied and analyzed for a better understanding of this imaging anatomic character of pulmonary veins. And it could be the anatomic base of adjusting correctly the angle of the central X-ray of the angiography of pulmonary veins undergoing the catheter ablation of atrial fibrillation (AF). Method: Images of contrast enhanced magnetic resonance angiography (CEMRA) and contrast enhanced computer tomography (CECT) of the left atrium and pulmonary veins of 137 health objects and patients with atrial fibrillation (AF) are processed with the technique of post-processing, and Projective Angles to the coronary and transversal sections are measured and analyzed statistically. Result: Project Angles of pulmonary veins are one of real and steady imaging anatomic characteristics of pulmonary veins. The statistical distribution of variables is relatively concentrated, with a fairly good representation of average value. It is possible to improve the angle of the central X-ray according to the average value in the selective angiography of pulmonary veins undergoing the catheter ablation of AF.

  8. AUTOLOGOUS VEIN SUPPORTED WITH A BIODEGRADABLE PROSTHESIS FOR ARTERIAL GRAFTING

    NARCIS (Netherlands)

    ZWEEP, HP; SATOH, S; VANDERLEI, B; HINRICHS, WLJ; DIJK, F; FEIJEN, J; WILDEVUUR, CRH

    1993-01-01

    To evaluate the potential of a supporting, compliant, biodegradable prosthesis to function as a temporary protective scaffold for autologous vein grafts in the arterial circulation, we implanted vein grafts into the carotid arteries of rabbits, either with (composite grafts) or without (control graf

  9. Looking after your health. 3. Avoiding varicose veins.

    Science.gov (United States)

    Randall, Sara

    2015-02-01

    This article is to summarise key concepts for the health of the midwife with particular focus on standing for prolonged periods. One of the resultant factors relating to standing postures is the slow but avoidable progression of varicose veins. There is a strong genetic bias to these veins, which can be distressing, but here we will highlight awareness and current research.

  10. Optimized Axillary Vein Technique versus Subclavian Vein Technique in Cardiovascular Implantable Electronic Device Implantation: A Randomized Controlled Study

    Institute of Scientific and Technical Information of China (English)

    Peng Liu; Yi-Feng Zhou; Peng Yang; Yan-Sha Gao; Gui-Ru Zhao; Shi-Yan Ren; Xian-Lun Li

    2016-01-01

    Background:The conventional venous access for cardiovascular implantable electronic device (CIED) is the subclavian vein,which is often accompanied by high complication rate.The aim of this study was to assess the efficacy and safety of optimized axillary vein technique.Methods:A total of 247 patients undergoing CIED implantation were included and assigned to the axillary vein group or the subclavian vein group randomly.Success rate of puncture and complications in the perioperative period and follow-ups were recorded.Results:The overall success rate (95.7% vs.96.0%) and one-time success rate (68.4% vs.66.1%) of punctures were similar between the two groups.In the subclavian vein group,pneumothorax occurred in three patients.The subclavian gaps of three patients were too tight to allow operation of the electrode lead.In contrast,there were no puncture-associated complications in the axillary vein group.In the patient follow-ups,two patients in the subclavian vein group had subclavian crush syndrome and both of them received lead replacement.The incidence of complications during the perioperative period and follow-ups of the axillary vein group and the subclavian vein group was 1.6% (2/125) and 8.2% (10/122),respectively (x2=5.813,P =0.016).Conclusion:Optimized axillary vein technique may be superior to the conventional subclavian vein technique for CIED lead placement.

  11. Jugular-axillary vein bypass for salvage of arteriovenous access.

    Science.gov (United States)

    Fulks, K D; Hyde, G L

    1989-01-01

    Stenosis or occlusion of the subclavian vein can cause incapacitating upper extremity swelling and venous hypertension in the patient with an arteriovenous (AV) access. A case of subclavian vein occlusion is reported that was treated with internal jugular-axillary vein bypass. This procedure resulted in salvage of the access and rapid resolution of the associated upper extremity swelling. It was concluded that jugular-axillary vein bypass should be considered in patients who have massive upper extremity edema resulting from a functioning AV access and ipsilateral subclavian vein occlusion. Patients undergoing creation of an AV access who have had previous temporary subclavian catheters or previous early failure of an AV access should have phlebography before surgery.

  12. Multiple vascular anomalies involving testicular, suprarenal arteries and lumbar veins

    Directory of Open Access Journals (Sweden)

    P Jyothsna

    2012-01-01

    Full Text Available Testicular arteries arise from the abdominal aorta and the inferior suprarenal artery from the renal artery. There are reports about variant origin and course of these arteries. Accessory testicular artery is also a common finding but its providing origin to inferior suprarenal artery is an important observation. During a routine dissection of abdomen of approximately 55-year-old male cadaver, unique vascular abnormality was observed. On the left side, a common arterial trunk originating from abdominal aorta immediately branched to give rise to superior testicular and inferior suprarenal arteries, the former after a short course hooked by the left suprarenal vein. In addition, the left suprarenal vein, second left lumbar vein, and left testicular vein joined to form a common trunk which drained into the left renal vein. A sound knowledge of vascular variations in relation to the kidney and suprarenal gland is important to surgeons dissecting the abdominal cavity.

  13. Disastrous Portal Vein Embolization Turned into a Successful Intervention

    Energy Technology Data Exchange (ETDEWEB)

    Dobrocky, Tomas, E-mail: tomas.dobrocky@insel.ch [University of Bern, Department of Interventional, Pediatric and Diagnostic Radiology, Inselspital, University Hospital (Switzerland); Kettenbach, Joachim, E-mail: joachim.kettenbach@stpoelten.lknoe.at [Universitätsklinikum St. Pölten-Lilienfeld, Institute of Medical Radiology, Diagnostic, Intervention (Austria); Lopez-Benitez, Ruben, E-mail: Ruben.lopez@insel.ch; Kara, Levent, E-mail: levent.kara@insel.ch [University of Bern, Department of Interventional, Pediatric and Diagnostic Radiology, Inselspital, University Hospital (Switzerland)

    2015-10-15

    Portal vein embolization (PVE) may be performed before hemihepatectomy to increase the volume of future liver remnant (FLR) and to reduce the risk of postoperative liver insufficiency. We report the case of a 71-year-old patient with hilar cholangiocarcinoma undergoing PVE with access from the right portal vein using a mixture of n-butyl-2-cyanoacrylate and ethiodized oil. During the procedure, nontarget embolization of the left portal vein occurred. An aspiration maneuver of the polymerized plug failed; however, the embolus obstructing portal venous flow in the FLR was successfully relocated into the right portal vein while carefully bypassing the plug with a balloon catheter, inflating the balloon, and pulling the plug into the main right portal vein.

  14. Principal Component Analysis of Thermal Dorsal Hand Vein Pattern Architecture

    Directory of Open Access Journals (Sweden)

    V. Krishna Sree

    2012-12-01

    Full Text Available The quest of providing more secure identification system has lead to rise in developing biometric systems. Biometrics such as face, fingerprint and iris have been developed extensively for human identification purpose and also to provide authentic input to many security systems in the past few decades. Dorsal hand vein pattern is an emerging biometric which is unique to every individual. In this study principal component analysis is used to obtain Eigen vein patterns which are low dimensional representation of vein pattern features. The extraction of the vein patterns was obtained by morphological techniques. Noise reduction filters are used to enhance the vein patterns. Principle component analysis is able to reduce the 2-dimensional image database into 1-dimensional Eigen vectors and able to identify all the dorsal hand pattern images.

  15. Finger vein image quality evaluation using support vector machines

    Science.gov (United States)

    Yang, Lu; Yang, Gongping; Yin, Yilong; Xiao, Rongyang

    2013-02-01

    In an automatic finger-vein recognition system, finger-vein image quality is significant for segmentation, enhancement, and matching processes. In this paper, we propose a finger-vein image quality evaluation method using support vector machines (SVMs). We extract three features including the gradient, image contrast, and information capacity from the input image. An SVM model is built on the training images with annotated quality labels (i.e., high/low) and then applied to unseen images for quality evaluation. To resolve the class-imbalance problem in the training data, we perform oversampling for the minority class with random-synthetic minority oversampling technique. Cross-validation is also employed to verify the reliability and stability of the learned model. Our experimental results show the effectiveness of our method in evaluating the quality of finger-vein images, and by discarding low-quality images detected by our method, the overall finger-vein recognition performance is considerably improved.

  16. EXPERIMENTAL STUDY OF THE MORPHOLOGY OF CEREBRAL BRIDGING VEIN

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Objective. To investigate the morphological properties of pig cerebral bridging vein. Methods. The morphology and fibre arrangement of 15 cerebral bridging veins obtained from 7 Danish Yorkshire landrace pigs were observed. Results. There was a narrow region at the junction of the cerebral bridging veins and superior sagittal sinus termed “ outflow cuff segment". The diameter and length of outflow cuff segment were much smaller and the thickness was higher than those of the cerebral bridging veins (P0.05). Conclusions. There were differences in fibre arrangement and morphological properties between the outflow cuff segment and the cerebral bridging vein, just like a resistance valve, the outflow cuff segment may play an important role in stabilizing cerebral venous outflow and regulating intracranial pressure.

  17. Portal vein embolization before major hepatectomy

    Institute of Scientific and Technical Information of China (English)

    Hai Liu; Yong Fu

    2005-01-01

    To discuss the rationale, techniques and the unsolved issues regarding preoperative portal vein embolization (PVE) before major hepatectomy. After a systematic search of Pubmed, we reviewed and retrieved literature related to PVE. Preoperative PVE is an approach that is gaining increasing acceptance in the preoperative treatment of selected patients prior to major hepatic resection. Induction of selective hypertrophy of the nondiseased portion of the liver with PVE in patients with either primary or secondary hepatobiliary, malignancy with small estimated future liver remnants (FLR) may result in fewer complications and shorter hospital stays following resection. Additionally, PVE performed in patients initially considered unsuitable for resection due to lack of sufficient remaining normal parenchyma may add to the pool of candidates for surgical treatment. The results suggest that PVE is recomm-endable in treating the cirrhotic patients before major liver resection.

  18. Internal Jugular Vein Thrombosis following Oropharyngeal Infection

    Directory of Open Access Journals (Sweden)

    Asli Bostanci

    2015-01-01

    Full Text Available Internal jugular vein thrombosis (IJVT is a rare condition which may lead to life-threatening complications such as sepsis and pulmonary embolism. Prolonged central venous catheterization, intravenous (IV drug use, trauma, and radiotherapy are the most frequent causes of the IJVT. IJVT that develops after the oropharyngeal infection is a quite rare situation today. In this paper, a 37-year-old woman was presented; swelling occurred on her neck after acute tonsillitis and she was diagnosed with IJVT through Doppler ultrasonography and magnetic resonance imaging and managed without complications. Early diagnosis and conservative treatment with broad-spectrum IV antibiotics and anticoagulant agents have a critical importance for the prevention of fatal complications.

  19. [Intermittent compression of the subclavian vein].

    Science.gov (United States)

    Maraval, M

    1980-01-01

    The pathology of the cervico-thoracic channel is now well understood. Intermittent venous compression in the costo-clavicular space by the subclavian muscle can lead to acute occlusion of the venous trunk. It is important to make an early diagnosis of such compression before the stage of occlusive phlebitis. Clinical examination and dynamic phlebography allow the diagnosis to be made. Resection of the first rib is the ideal treatment. The mode of approach to the first rib is debatable since it seems that when venous symptomatology is dominant, the axillary method of Roos is not the best approach. A combined sub- and supra-clavicular approach permits a wide decompression of the vein and a more complete excision of the rib.

  20. Mineral vein dynamics modelling (FRACS II)

    Energy Technology Data Exchange (ETDEWEB)

    Urai, J.; Virgo, S.; Arndt, M. [RWTH Aachen (Germany); and others

    2016-08-15

    The Mineral Vein Dynamics Modeling group ''FRACS'' started out as a team of 7 research groups in its first phase and continued with a team of 5 research groups at the Universities of Aachen, Tuebingen, Karlsruhe, Mainz and Glasgow during its second phase ''FRACS 11''. The aim of the group was to develop an advanced understanding of the interplay between fracturing, fluid flow and fracture healing with a special emphasis on the comparison of field data and numerical models. Field areas comprised the Oman mountains in Oman (which where already studied in detail in the first phase), a siliciclastic sequence in the Internal Ligurian Units in Italy (closed to Sestri Levante) and cores of Zechstein carbonates from a Lean Gas reservoir in Northern Germany. Numerical models of fracturing, sealing and interaction with fluid that were developed in phase I where expanded in phase 11. They were used to model small scale fracture healing by crystal growth and the resulting influence on flow, medium scale fracture healing and its influence on successive fracturing and healing, as well as large scale dynamic fluid flow through opening and closing fractures and channels as a function of fluid overpressure. The numerical models were compared with structures in the field and we were able to identify first proxies for mechanical vein-hostrock properties and fluid overpressures versus tectonic stresses. Finally we propose a new classification of stylolites based on numerical models and observations in the Zechstein cores and continued to develop a new stress inversion tool to use stylolites to estimate depth of their formation.

  1. Autogenous Sapheonus Vein Graft Interposition in Arteriovenous Fistula Formation

    Directory of Open Access Journals (Sweden)

    Alper Uzun

    2013-10-01

    Full Text Available Aim: Other techniques are required due to the negative influence of poor superficial venous system calibration (<1.5-2 mm to the long term patency of the arteriovenous fistula which is documented via preoperative Doppler ultrasound examination. The postoperative outcome of 32 patients were compared prospectively whom autologous saphenous vein bridge graft was interposed between brachial artery/high brachial vein and radial artery/basilic vein. Material and Method: Patients were divided into two groups; patients whom radial artery/basilic vein autologous saphenous vein graft interposition was performed were labelled as Group 1 (17 patients while patients whom brachial artery/high brachial vein autologous saphenous vein graft was interpositioned were labelled as Group 2 (15 patients. Patients were followed up for 12 months. Graft related complications were recorded. Primary and secondary patency rate were calculated. Results: Graft infection, edema or ischemia of the hand or arm, congestive heart failure and mortality was not observed. There was not a significant difference in puncture site complications between two groups. Primary patency rate was 76.5% (13 of 17 in Group 1 while it was 93.3% (14 of 15 for Group 2 (p=0,185. Secondary patency rate was 82.4% (14 of 17 in Group1 and 100% (15 of 15 for Group 2 (p=0.093. Primary and secondary patency rate were similar between two groups. Discussion: We sought to compare the complication and patency rate of the proximal (brachial artery/high brachial vein and distal (radial artery/basilic vein located bridge graft interpositions and could not found statistical difference between two groups. It is reasonable to keep proximal regions for further interventions, so radial artery/basilic vein bridge graft interposition can be recommended as the initial option according to our findings.

  2. Development of HIFU Treatment for Lower Extremity Varicose Veins

    Science.gov (United States)

    Senoo, Naohiko; Ushijima, Hiroyuki; Suzuki, Jun; Yoshinaka, Kiyoshi; Deguchi, Juno; Takagi, Shu; Miyata, Tetsuro; Matsumoto, Yoichiro

    2011-09-01

    High-intensity focused ultrasound (HIFU) has recently been developed as a noninvasive therapeutic method. In our study, a novel noninvasive therapy with HIFU was proposed for occlusion of lower extremity varicose veins. The temperature increase caused by HIFU is used to occlude varicose veins. Occluded veins became fibrotic, resulting in complete recovery. Our final goal is the medical application of HIFU treatment for varicose veins. In this study, we attempted to occlude the veins of rabbits. Prior to venous occlusion experiments, the area heated by HIFU was investigated using bovine serum albumin (BSA) gel, which denatures at >70 °C. The results indicate that the size of the heated area mainly depends on intensity at the focal point and the exposure time. A tendency was also seen for the heated area to extend toward the transducer with increasing exposure time. In animal experiments, skin burns during HIFU exposure represented a critical problem. We therefore examined the safe range of HIFU intensities in abdominal exposure experiments before conducting venous occlusion experiments. The ultrasound frequency was 1.7 MHz. Intensity at the focal point was 900 W/cm2, and the exposure time was 20 s. Rabbits underwent chemical depilation and echo gel was applied to the exposed skin to fill the boundary gap. Target veins were compressed during HIFU exposure to avoid thermal dissipation, and hyaluronan water solution was injected between the veins and skin to maintain the distance between the skin and veins at ≥5 mm. Veins were then exposed to HIFU and occluded. The capability of HIFU treatment to occlude lower extremity varicose veins was verified by the present study.

  3. Leaf hydraulic conductance varies with vein anatomy across Arabidopsis thaliana wild-type and leaf vein mutants.

    Science.gov (United States)

    Caringella, Marissa A; Bongers, Franca J; Sack, Lawren

    2015-12-01

    Leaf venation is diverse across plant species and has practical applications from paleobotany to modern agriculture. However, the impact of vein traits on plant performance has not yet been tested in a model system such as Arabidopsis thaliana. Previous studies analysed cotyledons of A. thaliana vein mutants and identified visible differences in their vein systems from the wild type (WT). We measured leaf hydraulic conductance (Kleaf ), vein traits, and xylem and mesophyll anatomy for A. thaliana WT (Col-0) and four vein mutants (dot3-111 and dot3-134, and cvp1-3 and cvp2-1). Mutant true leaves did not possess the qualitative venation anomalies previously shown in the cotyledons, but varied quantitatively in vein traits and leaf anatomy across genotypes. The WT had significantly higher mean Kleaf . Across all genotypes, there was a strong correlation of Kleaf with traits related to hydraulic conductance across the bundle sheath, as influenced by the number and radial diameter of bundle sheath cells and vein length per area. These findings support the hypothesis that vein traits influence Kleaf , indicating the usefulness of this mutant system for testing theory that was primarily established comparatively across species, and supports a strong role for the bundle sheath in influencing Kleaf .

  4. Factors Associated with Recurrence of Varicose Veins after Thermal Ablation: Results of The Recurrent Veins after Thermal Ablation Study

    Directory of Open Access Journals (Sweden)

    R. G. Bush

    2014-01-01

    Full Text Available Background. The goal of this retrospective cohort study (REVATA was to determine the site, source, and contributory factors of varicose vein recurrence after radiofrequency (RF and laser ablation. Methods. Seven centers enrolled patients into the study over a 1-year period. All patients underwent previous thermal ablation of the great saphenous vein (GSV, small saphenous vein (SSV, or anterior accessory great saphenous vein (AAGSV. From a specific designed study tool, the etiology of recurrence was identified. Results. 2,380 patients were evaluated during this time frame. A total of 164 patients had varicose vein recurrence at a median of 3 years. GSV ablation was the initial treatment in 159 patients (RF: 33, laser: 126, 52 of these patients had either SSV or AAGSV ablation concurrently. Total or partial GSV recanalization occurred in 47 patients. New AAGSV reflux occurred in 40 patients, and new SSV reflux occurred in 24 patients. Perforator pathology was present in 64% of patients. Conclusion. Recurrence of varicose veins occurred at a median of 3 years after procedure. The four most important factors associated with recurrent veins included perforating veins, recanalized GSV, new AAGSV reflux, and new SSV reflux in decreasing frequency. Patients who underwent RF treatment had a statistically higher rate of recanalization than those treated with laser.

  5. Non-cuffed dual lumen catheters in the external jugular veins versus other central veins for hemodialysis patients

    Directory of Open Access Journals (Sweden)

    Moini Majid

    2009-01-01

    Full Text Available To compare prospective between insertion of non-cuffed dual lumen catheter in the external jugular vein and other central veins for hemodialysis (HD, we studied 68 chronic dialysis patients randomly allocated into two groups: one with external jugular vein catheterization as access for HD and another with other central venous catheterization, internal jugular or subclavian vein. Our results showed there were no significant differences regarding successful cannulation, com-plications, total numbers of dialysis, development of pain and infection at the site of cannulation, patency rate of the catheters, and efficacy of hemodialysis between both groups. In addition, the patency of the catheter in the external jugular vein was not affected by previous cannulation of other central veins. In contrast, there was a significant correlation between numbers of attempts for cannulation in both groups and development of hematoma and infection, (p< 0.05. In conclusion, our results showed that the external jugular vein may be an alternative for other central veins for insertion of temporary non-cuffed hemodialysis catheter.

  6. Endovenous mechanochemical ablation of great saphenous vein incompetence using the ClariVein device: a safety study

    NARCIS (Netherlands)

    Eekeren, R. van; Boersma, D.; Elias, S.; Holewijn, S.; Werson, D.A.; Vries, J.P. de; Reijnen, M.M.P.J.

    2011-01-01

    PURPOSE: To evaluate the feasibility and safety of endovenous mechanochemical ablation (MOCA) for the treatment of great saphenous vein (GSV) incompetence. METHODS: The newly developed ClariVein device uses a technique that combines mechanical endothelial damage using a rotating wire with the infusi

  7. Artery and vein diameter ratio measurement based on improvement of arteries and veins segmentation on retinal images.

    Science.gov (United States)

    Hatanaka, Yuji; Tachiki, Hirokazu; Ogohara, Kazunori; Muramatsu, Chisako; Okumura, Susumu; Fujita, Hiroshi

    2016-08-01

    Retinal arteriolar narrowing is decided based on the artery and vein diameter ratio (AVR). Previous methods segmented blood vessels and classified arteries and veins by color pixels in the centerlines of blood vessels. AVR was definitively determined through measurement of artery and vein diameters. However, this approach was not sufficient for cases with close contact between the artery of interest and an imposing vein. Here, an algorithm for AVR measurement via new classification of arteries and veins is proposed. In this algorithm, additional steps for an accurate segmentation of arteries and veins, which were not identified using the previous method, have been added to better identify major veins in the red channel of a color image. To identify major arteries, a decision tree with three features was used. As a result, all major veins and 90.9% of major arteries were correctly identified, and the absolute mean error in AVRs was 0.12. The proposed method will require further testing with a greater number of images of arteriolar narrowing before clinical application.

  8. Total anomalous connection of pulmonary veins to the portal vein. Value of multislice angiotomography. Report on three cases

    Directory of Open Access Journals (Sweden)

    Sara Alejandra Solórzano-Morales

    2014-07-01

    15 and 26% if all its varieties. Multislice angiotomography allows us to view the blood vessels and adjacent organs under consideration and obtain high-definition anatomic information. In the patients in this study, total anomalous connection of pulmonary veins to the portal vein was viewed with three-dimensional volumetric tomographic reconstructions and their correlation with ultrasonography studies.

  9. Visual disturbance following sclerotherapy for varicose veins, reticular veins and telangiectasias: a systematic literature review.

    Science.gov (United States)

    Willenberg, T; Smith, P C; Shepherd, A; Davies, A H

    2013-04-01

    The objective of the study was to review the literature reporting visual disturbance (VD)following sclerotherapy for varicose veins. Underlying mechanisms will be discussed. A literature search of the databases Medline and Google Scholar was performed. Original articles including randomized trials, case series and case reports reporting VD in humans following sclerotherapy for varicose veins were included. Additional references were also obtained if they had been referenced in related publications. The search yielded 4948 results of which 25 reports were found to meet the inclusion criteria. In larger series with at least 500 included patients the prevalence of VD following sclerotherapy ranges from 0.09% to 2%. In most reports foam sclerotherapy was associated with VD (19); exclusive use of liquid sclerosant was reported in two cases, some reports included foam and liquid sclerosant (4). There were no persistent visual disorders reported. VD occurred with polidocanol and sodium tetradecyl sulphate in different concentrations (0.25–3%). Various forms of foam preparation including various ways of foam production and the liquid –air ratio (1 or 2 parts of liquid mixed with 3, 4 or 5 parts of air) were reported in association with the occurrence of VD. VDs following sclerotherapy for varicose veins are rare and all reported events were transient. Bubble embolism or any kind of embolism seems unlikely to be the only underlying mechanism. A systemic inflammatory response following sclerotherapy has been suggested. Further research to clarify the mechanism of action of sclerosants is required.

  10. A Case of Persistent Sciatic Artery Aneurysm Accompanied by a Persistent Sciatic Vein

    OpenAIRE

    Tadakoshi, Masao; Ohta, Takashi; Ishibashi, Hiroyuki; Sugimoto, Ikuo; Iwata, Hirohide; Yamada, Tetsuya; Hida, Noriyuki; Orimoto, Yuki

    2010-01-01

    A persistent sciatic artery is a rare anomaly. On the other hand, a persistent sciatic vein is frequently associated with Klippel-Trenaunay syndrome. In a 71-year-old female with a complete-type persistent sciatic artery aneurysm, we performed aneurysmectomy and right femoropopliteal bypass surgery. The right popliteal vein drained into the femoral vein via a lower-type persistent sciatic vein and the deep femoral vein. The superficial femoral artery and vein were hypoplastic. Since only 4 ca...

  11. Portal Vein Inflow From Enlarged Coronary Vein in Liver Transplantation: Surgical Approach and Technical Tips: A Case Report.

    Science.gov (United States)

    Safwan, M; Nagai, S; Abouljoud, M S

    2016-11-01

    Portal vein thrombosis is common in patients with end-stage liver disease, with an incidence as high as 26% in liver transplant candidates. It is known to be associated with a high risk of morbidity and mortality posttransplantation, and its management can be challenging. The management options range from a simple thrombendvenectomy to multivisceral transplantation in cases with diffuse portomesenteric thrombosis. We report a case of liver transplantation in which we performed a rare reconstruction of the portal vein. Briefly, the patient had diffuse portomesenteric thrombosis, calcified aneurysmosis, and a large collateral coronary vein, to which we directly anastomosed the donor portal vein in an end-to-side fashion. This report describes a unique surgical approach for similar cases of severe portal vein thrombosis in liver transplant candidates.

  12. Life without the vein of Galen: Clinical and radiographic sequelae.

    Science.gov (United States)

    Youssef, A Samy; Downes, Angela E; Agazzi, Siviero; Van Loveren, Harry R

    2011-09-01

    A thorough understanding of the anatomy of the pineal region, particularly venous drainage, is critical for gaining open surgical access to the pineal gland. The adverse sequelae after intraoperative venous occlusion are assumed to be catastrophic but have been scarcely reported. We report a case of pineocytoma in which the vein of Galen was ligated without postoperative adverse sequelae. Pineal region anatomy with emphasis on deep veins was reviewed in large anatomical studies. There are tremendous anatomical variations in the vein of Galen and its tributaries. Several confounding factors can be encountered during surgery and may lead to accidental sacrifice of the vein of Galen. Survival after focal occlusion of a major deep vein depends on the development of collateral circulation as shown in our case report. Venous drainage remains the cornerstone in the surgical planning of the pineal region. Anatomical variations and venous collaterals undoubtedly contributed to the mixed reports of adverse sequelae after venous sacrifice. Vein of Galen ligation may be survivable but consequences cannot be predicted without a thorough pre-ligation assessment of regional venous collateral drainage. Thorough understanding of the venous anatomy, meticulous planning of the surgical approach and avoidance of the occlusion of the vein of Galen and its major tributaries are key factors to successful pineal region surgery.

  13. Renal Vein Reconstruction for Harvesting Injury in Kidney Transplantation

    Directory of Open Access Journals (Sweden)

    Birkan Bozkurt

    2014-03-01

    Full Text Available Kidney transplantation is the best treatment choice in the end-stage renal disease. In the renal transplantation, renal vein damage or shortness which occurs during cadaveric or living donor nephrectomy causes technical difficulties for surgeons. The lack of the donors already especially cadaveric, the acquirement of the graft, gets very much importance. In this report, it is aimed to share the clinical experiment by which it seen, how anastomosis can become appropriate by using the renal vein which is damaged in the way that anastomosis cannot be done anyway by using cadaveric vena cava graft. The renal vein brought to length for anostomosis which is repaired by using cadaveric vena cava graft, is anastomosed successfully by becoming an end-to-side of the external iliac vein of the recipient. Vascular anastomoses are applied easily in technique. The time of the warm ischemia was under 2 hours and the kidney was functional in the post-operative period. Renal vein trombosis was not observed. The renal vein damage occured during cadaveric or living donor nephrectomy, can be repaired by some methods. In the kidneys in which vein requirement is done, the success rates are rather high although acute tubular necrosis and delayed function can be seen more.

  14. Leaf Vein Extraction Based on Gray-scale Morphology

    Directory of Open Access Journals (Sweden)

    Xiaodong Zheng

    2010-12-01

    Full Text Available Leaf features play an important role in plant species identification and plant taxonomy. The type of the leaf vein is an important morphological feature of the leaf in botany. Leaf vein should be extracted from the leaf in the image before discriminating its type. In this paper a new method of leaf vein extraction has been proposed based on gray-scale morphology. Firstly, the color image of the plant leaf is transformed to the gray image according to the hue and intensity information. Secondly, the gray-scale morphology processing is applied to the image to eliminate the color overlap in the whole leaf vein and the whole background. Thirdly, the linear intensity adjustment is adopted to enlarge the gray value difference between the leaf vein and its background. Fourthly, calculate a threshold with OSTU method to segment the leaf vein from its background. Finally, the leaf vein can be got after some processing on details. Experiments have been conducted with several images. The results show the effectiveness of the method. The idea of the method is also applicable to other linear objects extraction.

  15. Finger vein verification system based on sparse representation.

    Science.gov (United States)

    Xin, Yang; Liu, Zhi; Zhang, Haixia; Zhang, Hong

    2012-09-01

    Finger vein verification is a promising biometric pattern for personal identification in terms of security and convenience. The recognition performance of this technology heavily relies on the quality of finger vein images and on the recognition algorithm. To achieve efficient recognition performance, a special finger vein imaging device is developed, and a finger vein recognition method based on sparse representation is proposed. The motivation for the proposed method is that finger vein images exhibit a sparse property. In the proposed system, the regions of interest (ROIs) in the finger vein images are segmented and enhanced. Sparse representation and sparsity preserving projection on ROIs are performed to obtain the features. Finally, the features are measured for recognition. An equal error rate of 0.017% was achieved based on the finger vein image database, which contains images that were captured by using the near-IR imaging device that was developed in this study. The experimental results demonstrate that the proposed method is faster and more robust than previous methods.

  16. Palm Vein Verification Using Multiple Features and Locality Preserving Projections

    Directory of Open Access Journals (Sweden)

    Ali Mohsin Al-juboori

    2014-01-01

    Full Text Available Biometrics is defined as identifying people by their physiological characteristic, such as iris pattern, fingerprint, and face, or by some aspects of their behavior, such as voice, signature, and gesture. Considerable attention has been drawn on these issues during the last several decades. And many biometric systems for commercial applications have been successfully developed. Recently, the vein pattern biometric becomes increasingly attractive for its uniqueness, stability, and noninvasiveness. A vein pattern is the physical distribution structure of the blood vessels underneath a person’s skin. The palm vein pattern is very ganglion and it shows a huge number of vessels. The attitude of the palm vein vessels stays in the same location for the whole life and its pattern is definitely unique. In our work, the matching filter method is proposed for the palm vein image enhancement. New palm vein features extraction methods, global feature extracted based on wavelet coefficients and locality preserving projections (WLPP, and local feature based on local binary pattern variance and locality preserving projections (LBPV_LPP have been proposed. Finally, the nearest neighbour matching method has been proposed that verified the test palm vein images. The experimental result shows that the EER to the proposed method is 0.1378%.

  17. Preliminary Study for Designing a Novel Vein-Visualizing Device

    Directory of Open Access Journals (Sweden)

    Donghoon Kim

    2017-02-01

    Full Text Available Venipuncture is an important health diagnosis process. Although venipuncture is one of the most commonly performed procedures in medical environments, locating the veins of infants, obese, anemic, or colored patients is still an arduous task even for skilled practitioners. To solve this problem, several devices using infrared light have recently become commercially available. However, such devices for venipuncture share a common drawback, especially when visualizing deep veins or veins of a thick part of the body like the cubital fossa. This paper proposes a new vein-visualizing device applying a new penetration method using near-infrared (NIR light. The light module is attached directly on to the declared area of the skin. Then, NIR beam is rayed from two sides of the light module to the vein with a specific angle. This gives a penetration effect. In addition, through an image processing procedure, the vein structure is enhanced to show it more accurately. Through a phantom study, the most effective penetration angle of the NIR module is decided. Additionally, the feasibility of the device is verified through experiments in vivo. The prototype allows us to visualize the vein patterns of thicker body parts, such as arms.

  18. Preliminary Study for Designing a Novel Vein-Visualizing Device.

    Science.gov (United States)

    Kim, Donghoon; Kim, Yujin; Yoon, Siyeop; Lee, Deukhee

    2017-02-07

    Venipuncture is an important health diagnosis process. Although venipuncture is one of the most commonly performed procedures in medical environments, locating the veins of infants, obese, anemic, or colored patients is still an arduous task even for skilled practitioners. To solve this problem, several devices using infrared light have recently become commercially available. However, such devices for venipuncture share a common drawback, especially when visualizing deep veins or veins of a thick part of the body like the cubital fossa. This paper proposes a new vein-visualizing device applying a new penetration method using near-infrared (NIR) light. The light module is attached directly on to the declared area of the skin. Then, NIR beam is rayed from two sides of the light module to the vein with a specific angle. This gives a penetration effect. In addition, through an image processing procedure, the vein structure is enhanced to show it more accurately. Through a phantom study, the most effective penetration angle of the NIR module is decided. Additionally, the feasibility of the device is verified through experiments in vivo. The prototype allows us to visualize the vein patterns of thicker body parts, such as arms.

  19. Palm vein verification using multiple features and locality preserving projections.

    Science.gov (United States)

    Al-Juboori, Ali Mohsin; Bu, Wei; Wu, Xiangqian; Zhao, Qiushi

    2014-01-01

    Biometrics is defined as identifying people by their physiological characteristic, such as iris pattern, fingerprint, and face, or by some aspects of their behavior, such as voice, signature, and gesture. Considerable attention has been drawn on these issues during the last several decades. And many biometric systems for commercial applications have been successfully developed. Recently, the vein pattern biometric becomes increasingly attractive for its uniqueness, stability, and noninvasiveness. A vein pattern is the physical distribution structure of the blood vessels underneath a person's skin. The palm vein pattern is very ganglion and it shows a huge number of vessels. The attitude of the palm vein vessels stays in the same location for the whole life and its pattern is definitely unique. In our work, the matching filter method is proposed for the palm vein image enhancement. New palm vein features extraction methods, global feature extracted based on wavelet coefficients and locality preserving projections (WLPP), and local feature based on local binary pattern variance and locality preserving projections (LBPV_LPP) have been proposed. Finally, the nearest neighbour matching method has been proposed that verified the test palm vein images. The experimental result shows that the EER to the proposed method is 0.1378%.

  20. [RADIOFREQUENCY ABLATION FOR THE TREATMENT OF VARICOSE VEINS].

    Science.gov (United States)

    Sugiyama, Satoru; Miyade, Yoshio; Inaki, Yasuhiko

    2015-05-01

    Significant advances in the endovenous technique for treating incompetent saphenous veins could change the surgical strategy in patients with varicose veins. Radiofrequency ablation (RFA) was approved as a new technique for the treatment of varicose veins in Japan in June 2014. In RFA, the ablation temperature is controlled by a sensor at the upper end of the catheter. The vein wall is heated with stable conductive power of 120 degrees C, resulting in endothelial denudation. The RFA method was approved in 1998 in Europe and in 1999 in the USA. The ClosurePLUS catheter was developed in 2003 and ClosureFAST in 2006. High occlusion rates and lower postoperative complication rates were reported with ClosureFAST than with ClosurePLUS. It is expected that this new ablation technique will control saphenous vein reflux with less pain and less ecchymosis after surgery. The treatment of varicose veins is less invasive with RFA devices and will become widely accepted as an alternative to conventional surgery for varicose veins in Japan.

  1. Preliminary Study for Designing a Novel Vein-Visualizing Device

    Science.gov (United States)

    Kim, Donghoon; Kim, Yujin; Yoon, Siyeop; Lee, Deukhee

    2017-01-01

    Venipuncture is an important health diagnosis process. Although venipuncture is one of the most commonly performed procedures in medical environments, locating the veins of infants, obese, anemic, or colored patients is still an arduous task even for skilled practitioners. To solve this problem, several devices using infrared light have recently become commercially available. However, such devices for venipuncture share a common drawback, especially when visualizing deep veins or veins of a thick part of the body like the cubital fossa. This paper proposes a new vein-visualizing device applying a new penetration method using near-infrared (NIR) light. The light module is attached directly on to the declared area of the skin. Then, NIR beam is rayed from two sides of the light module to the vein with a specific angle. This gives a penetration effect. In addition, through an image processing procedure, the vein structure is enhanced to show it more accurately. Through a phantom study, the most effective penetration angle of the NIR module is decided. Additionally, the feasibility of the device is verified through experiments in vivo. The prototype allows us to visualize the vein patterns of thicker body parts, such as arms. PMID:28178227

  2. [Oclusion of upper ophthalmic vein--a case report].

    Science.gov (United States)

    Kácerik, M; Alexík, M; Lipková, B

    2009-07-01

    Thrombosis of upper ophthalmic vein is both rare and serious pathologic event. Authors present a case of isolated unilateral upper ophthalmic vein thrombosis in 76-year-old woman, who despite treatment ended with amaurosis and secondary neovascular glaucoma. In differential diagnosis authors focused on searching for inflammatory process of orbit with adjacent structures as well as local and general causes leading to venous thrombosis. None of these were proven; it was a rare case of a patient with isolated upper ophthalmic vein thrombosis.

  3. Ovarian Vein Thrombosis as a Complication of Laparoscopic Surgery.

    Science.gov (United States)

    Gupta, Anu; Gupta, Natasha; Blankstein, Josef; Trester, Richard

    2015-01-01

    Ovarian vein thrombosis (OVT) is an extremely rare but life-threatening complication of the postpartum period. It has never been reported as a complication of laparoscopic surgery. We report a case of right ovarian vein thrombosis that occurred in the postoperative period after patient underwent laparoscopic salpingectomy for a right side ectopic pregnancy. She presented with 1-week history of abdominal pain and fever. A complete workup for fever was performed and was found negative. Computed tomography of the abdomen and pelvis revealed right ovarian vein thrombosis. The patient was treated with anticoagulant therapy and responded well.

  4. Ovarian Vein Thrombosis as a Complication of Laparoscopic Surgery

    Directory of Open Access Journals (Sweden)

    Anu Gupta

    2015-01-01

    Full Text Available Ovarian vein thrombosis (OVT is an extremely rare but life-threatening complication of the postpartum period. It has never been reported as a complication of laparoscopic surgery. We report a case of right ovarian vein thrombosis that occurred in the postoperative period after patient underwent laparoscopic salpingectomy for a right side ectopic pregnancy. She presented with 1-week history of abdominal pain and fever. A complete workup for fever was performed and was found negative. Computed tomography of the abdomen and pelvis revealed right ovarian vein thrombosis. The patient was treated with anticoagulant therapy and responded well.

  5. Pylephlebitis of a variant mesenteric vein complicating sigmoid diverticulitis.

    Science.gov (United States)

    Falkowski, Anna L; Cathomas, Gieri; Zerz, Andreas; Rasch, Helmut; Tarr, Philip E

    2014-02-01

    Pylephlebitis--suppurative thrombophlebitis of the portal and/or mesenteric veins--is a rare complication of abdominal infections, especially diverticulitis. It can lead to severe complications such as hepatic abscess, sepsis, peritonitis, bowel ischemia, etc., which increase the mortality rate. Here we present a case of suppurative thrombophlebitis of the inferior mesenteric vein, as a complication of sigmoid diverticulitis. The epidemiology, clinical and radiological features as well as treatment strategies are discussed. We also review the anatomy of the mesenteric vein given its anatomic variation in the present case and how this anatomic knowledge might influence the operative approach should surgery be necessary.

  6. Duodenal obstruction due to a preduodenal portal vein

    Directory of Open Access Journals (Sweden)

    MNC Vilakazi

    2014-01-01

    Full Text Available An infant presented with clinical signs and symptoms suggestive of a pyloric stenosis. On abdominal ultrasound, pyloric stenosis was excluded, and other causes for proximal duodenal obstruction, such as a duodenal web or annular pancreas, were suspected. At surgery, the cause was found to be due to an anterior portal vein or preduodenal portal vein, compressing the duodenum. There were no associated findings such as midgut malrotation, duodenal web and congenital anomalies. The treatment was a diamond-shaped duodeno-duodenostomy anterior to the portal vein. The patient improved after surgery.

  7. Combined arteriovenous thrombolytic infusion for refractory renal vein thrombosis.

    Science.gov (United States)

    Heafner, Thomas A; Scott, Daniel; Watson, J Devin; Propper, Brandon; Johnson, Chatt; Arthurs, Zachary M

    2014-08-01

    Acute renal vein thrombosis can rapidly lead to significant impairment and eventual loss of renal function. Classically presenting with flank pain, hematuria, and laboratory markers consistent with acute kidney injury, therapeutic anticoagulation is the mainstay of treatment. However, endovascular surgery offers a safe and effective alternative for renal salvage in the setting of acute renal vein thrombosis. Described is the use of combined arteriovenous thrombolytic infusion for refractory renal vein thromboses to quickly and effectively decrease clot burden in the micro- and macrovenous circulations while limiting systemic exposure.

  8. Unusual Presentation of Renal Vein Thrombosis in a Preterm Infant.

    Science.gov (United States)

    Yang, Chang-Yo; Fu, Ren-Huei; Lien, Reyin; Yang, Peng-Hong

    2014-05-01

    Neonatal renal vein thrombosis is the most common vascular condition in the newborn kidney, which could lead to serious complication in infants undergoing intensive care. In this study, we report the case of a preterm infant with left renal vein and inferior vena cava thrombosis, presented with gross hematuria, thrombocytopenia, transient hypertension, and adrenal hemorrhage. Supportive care was offered instead of heparin therapy or thrombolytic agents. In conclusion, our case teaches that, despite the lack of a clinically obvious shock event, renal vein thrombosis should be considered in a macrohematuric newborn without renal failure.

  9. Splenic Vein Leiomyosarcoma: Case Report and Review of the Literature

    Directory of Open Access Journals (Sweden)

    Damiano Patrono

    2014-09-01

    Full Text Available Context Primary venous leiomyosarcoma (LMS is a rare disease, most commonly affecting the retroperitoneal veins and in particular the inferior vena cava. Five-year survival rate ranges between 33% and 68%. Case Report Complete surgical resection represents the only potentially curative treatment, occasionally achieving long-term survival. LMS of the splenic vein is extremely rare, with only three cases reported in the literature. Conclusion We report a case of primary venous LMS arising from the splenic vein and we briefly review the relevant literature.

  10. Postpartum ovarian vein thrombosis after cesarean delivery: a case report

    Directory of Open Access Journals (Sweden)

    Royo Pedro

    2008-04-01

    Full Text Available Abstract Introduction Postpartum ovarian vein thrombosis is an uncommon complication; incidence varies between 0.002% and 0.05%. It most often occurs during the 2–15 days following delivery. Case presentation A 22-year-old pregnant woman at term presented to hospital with uterine contractions, abdominal pain, nausea and vomiting. After delivery an ovarian vein thrombosis was diagnosed. Conclusion Low-molecular weight heparin with broad-spectrum antibiotics are the accepted therapy in non-complicated cases of postpartum ovarian vein thrombosis.

  11. Postpartum ovarian vein thrombosis after cesarean delivery: a case report

    Science.gov (United States)

    Royo, Pedro; Alonso-Burgos, Alberto; García-Manero, Manuel; Lecumberri, Ramón; Alcázar, Juan Luis

    2008-01-01

    Introduction Postpartum ovarian vein thrombosis is an uncommon complication; incidence varies between 0.002% and 0.05%. It most often occurs during the 2–15 days following delivery. Case presentation A 22-year-old pregnant woman at term presented to hospital with uterine contractions, abdominal pain, nausea and vomiting. After delivery an ovarian vein thrombosis was diagnosed. Conclusion Low-molecular weight heparin with broad-spectrum antibiotics are the accepted therapy in non-complicated cases of postpartum ovarian vein thrombosis. PMID:18400095

  12. Endovenous radiofrequency ablation for the treatment of varicose veins.

    Science.gov (United States)

    Kayssi, Ahmed; Pope, Marc; Vucemilo, Ivica; Werneck, Christiane

    2015-04-01

    Varicose veins are a common condition that can be treated surgically. Available operative modalities include saphenous venous ligation and stripping, phlebectomy, endovenous laser therapy and radiofrequency ablation. Radiofrequency ablation is the newest of these technologies, and to our knowledge our group was the first to use it in Canada. Our experience suggests that it is a safe and effective treatment for varicose veins, with high levels of patient satisfaction reported at short-term follow-up. More studies are needed to assess long-term effectiveness and compare the various available treatment options for varicose veins.

  13. Use of bovine mesenteric vein in rescue vascular access surgery.

    Science.gov (United States)

    Benedetto, Filippo; Carella, Giuseppe; Lentini, Salvatore; Barillà, David; Stilo, Francesco; De Caridi, Giovanni; Spinelli, Francesco

    2010-01-01

    We describe a technique for rescue surgery of autologous arterovenous fistula (AVF), using bovine mesenteric vein (BMV), which may be used in patients with autologous AVF malfunction caused by steno-occlusion on the arterial side or by fibrosis of the first portion of the vein. To preserve the autologous AVF, we replaced the diseased portion of the artery, or the first centimeters of the vein, by a segment of BMV, with the aim of saving the patency and functionality of the access. We used this technique in 16 cases. All patients underwent hemodialysis treatment immediately after the procedure. Infection or aneurismal dilatation of the graft in implanted BMV was never observed.

  14. Application of cryopreserved vein grafts as a conduit between the coronary vein and liver graft to reconstruct portal flow in adult living liver transplantation.

    Science.gov (United States)

    Wu, Tsung-Han; Chou, Hong-Shiue; Pan, Kuang-Tse; Lee, Ching-Song; Wu, Ting-Jun; Chu, Sung-Yu; Chen, Miin-Fu; Lee, Wei-Chen

    2009-01-01

    Adult-to-adult living donor liver transplantation is an alternative to donation from a deceased individual, and can help relieve the shortage of liver donations available for adult patients in Asian countries. When transplant candidates have thrombosis and deterioration of the portal vein, living donor liver transplantation is relatively contraindicated because portal veins in the grafts are short and vein grafts may not be available to reconstruct the portal vein. From June 2003 to May 2007, 82 adult living donor liver transplantations were performed at Chang-Gung Memorial Hospital. Three patients had portal vein thrombosis and marked fibrosis of the portal vein and cryopreserved vein grafts were used to reconstruct portal flow from the engorged coronary vein to the graft portal vein. All vein grafts are patent and all patients have normal liver function at 21-36 months after transplantation. When cryopreserved vein grafts are available, adult living donor liver transplantation can be successfully performed in patients with marked deterioration of the portal vein. The short distance from the engorged coronary vein to the graft portal vein may decrease the incidence of re-thrombosis of the venous conduit.

  15. Deep Vein Thrombosis Prophylaxis in Trauma Patients

    Directory of Open Access Journals (Sweden)

    Serdar Toker

    2011-01-01

    Full Text Available Deep vein thrombosis (DVT and pulmonary embolism (PE are known collectively as venous thromboembolism (VTE. Venous thromboembolic events are common and potentially life-threatening complications following trauma with an incidence of\t5 to 63%. DVT prophylaxis is essential in the management of trauma patients. Currently, the optimal VTE prophylaxis strategy for trauma patients is unknown. Traditionally, pelvic and lower extremity fractures, head injury, and prolonged immobilization have been considered risk factors for VTE; however it is unclear which combination of risk factors defines a high-risk group. Modalities available for trauma patient thromboprophylaxis are classified into pharmacologic anticoagulation, mechanical prophylaxis, and inferior vena cava (IVC filters. The available pharmacologic agents include low-dose heparin (LDH, low molecular weight heparin (LMWH, and factor Xa inhibitors. Mechanical prophylaxis methods include graduated compression stockings (GCSs, pneumatic compression devices (PCDs, and A-V foot pumps. IVCs are traditionally used in high risk patients in whom pharmacological prophylaxis is contraindicated. Both EAST and ACCP guidelines recommend primary use of LMWHs in trauma patients; however there are still controversies regarding the definitive VTE prophylaxis in trauma patients. Large randomized prospective clinical studies would be required to provide level I evidence to define the optimal VTE prophylaxis in trauma patients.

  16. Deep vein thrombosis prophylaxis in trauma patients.

    Science.gov (United States)

    Toker, Serdar; Hak, David J; Morgan, Steven J

    2011-01-01

    Deep vein thrombosis (DVT) and pulmonary embolism (PE) are known collectively as venous thromboembolism (VTE). Venous thromboembolic events are common and potentially life-threatening complications following trauma with an incidence of 5 to 63%. DVT prophylaxis is essential in the management of trauma patients. Currently, the optimal VTE prophylaxis strategy for trauma patients is unknown. Traditionally, pelvic and lower extremity fractures, head injury, and prolonged immobilization have been considered risk factors for VTE; however it is unclear which combination of risk factors defines a high-risk group. Modalities available for trauma patient thromboprophylaxis are classified into pharmacologic anticoagulation, mechanical prophylaxis, and inferior vena cava (IVC) filters. The available pharmacologic agents include low-dose heparin (LDH), low molecular weight heparin (LMWH), and factor Xa inhibitors. Mechanical prophylaxis methods include graduated compression stockings (GCSs), pneumatic compression devices (PCDs), and A-V foot pumps. IVCs are traditionally used in high risk patients in whom pharmacological prophylaxis is contraindicated. Both EAST and ACCP guidelines recommend primary use of LMWHs in trauma patients; however there are still controversies regarding the definitive VTE prophylaxis in trauma patients. Large randomized prospective clinical studies would be required to provide level I evidence to define the optimal VTE prophylaxis in trauma patients.

  17. Nitroprusside modulates pulmonary vein arrhythmogenic activity

    Directory of Open Access Journals (Sweden)

    Chen Yao-Chang

    2010-03-01

    Full Text Available Abstract Background Pulmonary veins (PVs are the most important sources of ectopic beats with the initiation of paroxysmal atrial fibrillation, or the foci of ectopic atrial tachycardia and focal atrial fibrillation. Elimination of nitric oxide (NO enhances cardiac triggered activity, and NO can decrease PV arrhythmogensis through mechano-electrical feedback. However, it is not clear whether NO may have direct electrophysiological effects on PV cardiomyocytes. This study is aimed to study the effects of nitroprusside (NO donor, on the ionic currents and arrhythmogenic activity of single cardiomyocytes from the PVs. Methods Single PV cardiomyocytes were isolated from the canine PVs. The action potential and ionic currents were investigated in isolated single canine PV cardiomyocytes before and after sodium nitroprusside (80 μM, using the whole-cell patch clamp technique. Results Nitroprusside decreased PV cardiomyocytes spontaneous beating rates from 1.7 ± 0.3 Hz to 0.5 ± 0.4 Hz in 9 cells (P Conclusion Nitroprusside regulates the electrical activity of PV cardiomyocytes, which suggests that NO may play a role in PV arrhythmogenesis.

  18. Portal vein embolization for hepatocellular carcinoma.

    Science.gov (United States)

    Shindoh, Junichi; D Tzeng, Ching-Wei; Vauthey, Jean-Nicolas

    2012-11-01

    Portal vein embolization (PVE) improves the safety of major hepatectomy through hypertrophy of the future liver remnant (FLR), atrophy of the liver volume to be resected, and improvement in patient selection. Because most patients with hepatocellular carcinoma (HCC) have liver parenchymal injury due to underlying viral hepatitis or alcoholic liver fibrosis/cirrhosis, indication of PVE is relatively complex and sequential procedures, including transarterial chemoembolization, are required to maximize the effect of PVE as well as to minimize tumor progression due to increased arterial flow after PVE. PVE is currently indicated for patients with relatively well-preserved hepatic function [Child-Pugh A and indocyanine green tolerance test (ICG-R15) 40% is the minimal requirement for patients with chronic hepatitis or cirrhosis, and further strict criteria (FLR volume >50%) have been recommended for patients with marginal liver functional reserve (ICG-R15, 10-20%). Recent clinical results have suggested that PVE can be safely performed in patients with HCC and that it contributes to improved survival after major hepatectomy.

  19. Clinical Trials in Branch Retinal Vein Occlusion

    Science.gov (United States)

    Panakanti, Tandava Krishnan; Chhablani, Jay

    2016-01-01

    Branch retinal vein occlusion (BRVO) is the second most common retinal vascular disorder. The management of macular edema has changed considerably over time. The laser is considered the gold standard treatment for over two decades. However, visual recovery with laser is usually slow and incomplete. The advent of intravitreal agents, specifically anti-vascular endothelial growth factors (VEGF) have heralded a new era which promises rapid recovery of vision and quality of vision. Randomized clinical trials have reported optimal results with anti-VEGF agents (ranibizumab, bevacizumab, and aflibercept) compared to laser therapy or steroids. However, nearly 50% of the patients require repeat intravitreal anti-VEGF therapy up to 4 years after initiating therapy to sustain the visual gains. The adverse events (systemic and ocular) of these agents are minimal. Monotherapy with anti-VEGF agents have been found to provide better results than any combination with laser. This review article summarizes evidence from randomized controlled trials evaluating treatment options for the treatment of macular edema secondary to BRVO with a special focus on anti-VEGF therapy. PMID:26957837

  20. Clinical trials in branch retinal vein occlusion

    Directory of Open Access Journals (Sweden)

    Tandava Krishnan Panakanti

    2016-01-01

    Full Text Available Branch retinal vein occlusion (BRVO is the second most common retinal vascular disorder. The management of macular edema has changed considerably over time. The laser is considered the gold standard treatment for over two decades. However, visual recovery with laser is usually slow and incomplete. The advent of intravitreal agents, specifically anti-vascular endothelial growth factors (VEGF have heralded a new era which promises rapid recovery of vision and quality of vision. Randomized clinical trials have reported optimal results with anti-VEGF agents (ranibizumab, bevacizumab, and aflibercept compared to laser therapy or steroids. However, nearly 50% of the patients require repeat intravitreal anti-VEGF therapy up to 4 years after initiating therapy to sustain the visual gains. The adverse events (systemic and ocular of these agents are minimal. Monotherapy with anti-VEGF agents have been found to provide better results than any combination with laser. This review article summarizes evidence from randomized controlled trials evaluating treatment options for the treatment of macular edema secondary to BRVO with a special focus on anti-VEGF therapy.

  1. HIV associated deep vein thrombosis: Case reports from Jos, Nigeria

    Directory of Open Access Journals (Sweden)

    C A Daniyam

    2011-01-01

    Full Text Available Deep vein thrombosis (DVT has been reported to be 2-10 times commoner in HIV infected patients than in the general population. We report two cases of extensive unilateral deep vein thrombosis involving the lower limb in HIV infected patients on highly active antiretroviral therapy (HAART. Doppler ultrasound in the two patients revealed evidence of venous thrombosis from the femoral vein down to the posterior tibial veins. None of the patients had a history of acquired risk factors for DVT. Both patients responded well to anti-coagulants. A high index of suspicion may therefore be required to make the diagnosis and institute adequate management for this condition which has potentially life threatening consequences.

  2. Plantar vein thrombosis: a rare cause of plantar foot pain

    Energy Technology Data Exchange (ETDEWEB)

    Siegal, Daniel S.; Wu, Jim S.; Brennan, Darren D.; Hochman, Mary G. [Beth Israel Deaconess Medical Center, Department of Radiology, Boston, MA (United States); Challies, Tracy [Beth Israel Deaconess Medical Center, Department of Pathology, Boston, MA (United States)

    2008-03-15

    Plantar vein thrombosis is a rare condition, with only a handful of cases reported in the literature. The cause is unknown; however, the disease has been attributed to prior surgery, trauma, and paraneoplastic conditions. We present a case of a 32-year-old female runner with plantar vein thrombosis diagnosed on contrast-enhanced MRI and confirmed on ultrasound. The symptoms resolved with conservative treatment and evaluation revealed the presence of a prothrombin gene mutation and use of oral contraceptive pills. To our knowledge, this is the first case of plantar vein thrombosis diagnosed initially by MRI. Moreover, this case suggests that plantar vein thrombosis should be considered in patients with hypercoagulable states and plantar foot pain. (orig.)

  3. Dorsal Hand Vein Biometry by Independent Component Analysis

    Directory of Open Access Journals (Sweden)

    V.H.Yadav

    2012-07-01

    Full Text Available Biometric authentication provides a high security and reliable approach to be used in security access system. Personal identification based on hand vein patterns is a newly developed recent year. The pattern of blood veins in the hand is unique to every individual, even among identical twins, and it do notchange over time. These properties of uniqueness, stability and strong immunity to forgery of the vein patterns make it a potentially good biometric trait which offers greater security and reliable features for personal identification. In this study, we have used the BOSPHORUS hand vein database which has been taken under a source of NIR infrared radiation. For feature extraction we applied appearance based method ICA which produces independent components. To control over the number of independent component we preprocessed data by PCA before applying ICA, and gives good experimental results.

  4. Ovarian vein thrombosis in Behçet disease.

    Science.gov (United States)

    Tan, Justina Wei Lynn; Howe, Hwee Siew; Chng, Hiok Hee

    2012-03-01

    We describe a 35-year-old Chinese woman with Behçet disease complicated by recurrent gastrointestinal flares. During admission for acute lower abdominal pain, a computed tomographic scan of the abdomen showed thrombosis of the left ovarian vein. She was treated with increased immunosuppressant and oral anticoagulant. Although she was not compliant to oral anticoagulant with her international normalized ratio frequently subtherapeutic, her symptoms abated and the thrombosis resolved. There has been only 1 reported case of a patient with Behçet disease presenting with postpartum ovarian vein thrombosis and pulmonary embolism and no reported case of Behçet disease with ovarian vein thrombosis occurring outside pregnancy and the puerperium. Ovarian vein thrombosis is a rare cause of abdominal pain that should be considered in patients with Behçet disease.

  5. Anomalous azygos veins - its embryological basis and clinical significance

    Directory of Open Access Journals (Sweden)

    Uma Shivanal

    2015-09-01

    Results: In the present study, normal azygos venous system was found in 8 specimens accounting for 80%. Variations were found in 2 specimens (20%; one specimen presented with connection between accessory hemiazygos vein and hemiazygos vein, 3 transverse channels across vertebral column and the other specimen showed absence of accessory hemiazygos vein and shifting of azygos vein towards midline. Conclusions: Accurate knowledge about these kinds of variations is very important to identify, especially in the computed tomography and magnetic resonance imaging of mediastinum. The abnormal azygos venous system may easily be confused with aneurysm, lymphadenopathy and other abnormalities like tumor. It is important to keep these kinds of variations in mind while performing the mediastinal operations or surgery of large vessels. [Int J Res Med Sci 2015; 3(9.000: 2323-2326

  6. Anti-GBM disease and renal vein thrombosis.

    Science.gov (United States)

    Bailey, Phillippa; Sarfraz, Farook; Ravanan, Rommel

    2011-11-15

    A 23-year-old female who presented with advanced renal failure was subsequently diagnosed with renal vein thrombosis and antiglomerular basement membrane (GBM) antibody disease. A previous case of renal vein thrombosis has been reported in association with anti-GBM disease, but to our knowledge, this is the first reported case in which the presentation of anti-GBM disease and renal vein thrombosis was concurrent. Further study is essential to understand if the association of anti-GBM disease and renal vein thrombosis as seen in our case was pure coincidence or is in fact occurs more frequently. It may be that the dual diagnosis is not made as establishing one sufficient diagnosis for renal failure may halt further investigations for additional diagnoses.

  7. Infrahepatic inferior vena cava agenesis with bilateral renal vein thrombosis.

    Science.gov (United States)

    Skeik, Nedaa; Wickstrom, Kelly K; Schumacher, Clark W; Sullivan, Timothy M

    2013-10-01

    Congenital anomalies of the inferior vena cava (IVC) are rare and are estimated to be present in 0.07-8.7% of the general population. IVC agenesis (IVCA) is found in approximately 5% of cases of unprovoked lower extremity deep vein thrombosis in patients Renal vein thrombosis (RVT) is an extremely rare and unusual presentation of IVCA. We report a unique case of a 23-year-old previously healthy man presenting with infrahepatic IVCA-induced bilateral RVT with azygos and hemiazygos continuation. To our knowledge, this is the third reported case in the literature of IVCA-induced RVT and the first to affect the bilateral renal veins in the absence of any other thrombogenic risk factors or any lower extremity venous complications. We also present a literature review of IVCA-induced vein thrombosis and highlight the lack of literature to manage this condition.

  8. Acute scrotal pain: an uncommon manifestation of renal vein thrombosis.

    Science.gov (United States)

    Jou, Yeong-Chin; Jong, Ing-Chin; Hsieh, Ying-Chen; Kang, Chun-Hsiung

    2014-03-01

    The clinical manifestation of renal vein thrombosis varies with the speed and degree of venous occlusion. Such patients may be asymptomatic, have minor nonspecific symptoms such as nausea or weakness, or have more specific symptoms such as upper abdominal pain, flank pain, or hematuria. Acute scrotal pain is a very uncommon clinical expression of renal vein thrombosis. Here, we report a case of membranous glomerulonephritis-induced renal vein thrombosis presented with the symptom of acute scrotal pain caused by thrombosis-induced varicocele. This case report suggests that renal vein thrombosis should be considered in the diagnosis of acute scrotal pain; it also emphasizes that an investigation of retroperitoneum should be performed for adult patients with the sudden onset of varicocele.

  9. Central Retinal Vein Occlusion AssociatedWith Sildenafil (Viagra

    Directory of Open Access Journals (Sweden)

    H C Obiudu

    2010-01-01

    Conclusion - Central retinal vein occlusion is a possible adverse effect of sildenafil use. Physicians should be vigilant while prescribing thismedication and avoid its use in patients with elevated intraocular pressure

  10. Personal authentication using hand vein triangulation and knuckle shape.

    Science.gov (United States)

    Kumar, Ajay; Prathyusha, K Venkata

    2009-09-01

    This paper presents a new approach to authenticate individuals using triangulation of hand vein images and simultaneous extraction of knuckle shape information. The proposed method is fully automated and employs palm dorsal hand vein images acquired from the low-cost, near infrared, contactless imaging. The knuckle tips are used as key points for the image normalization and extraction of region of interest. The matching scores are generated in two parallel stages: (i) hierarchical matching score from the four topologies of triangulation in the binarized vein structures and (ii) from the geometrical features consisting of knuckle point perimeter distances in the acquired images. The weighted score level combination from these two matching scores are used to authenticate the individuals. The achieved experimental results from the proposed system using contactless palm dorsal-hand vein images are promising (equal error rate of 1.14%) and suggest more user friendly alternative for user identification.

  11. Finger vein recognition based on finger crease location

    Science.gov (United States)

    Lu, Zhiying; Ding, Shumeng; Yin, Jing

    2016-07-01

    Finger vein recognition technology has significant advantages over other methods in terms of accuracy, uniqueness, and stability, and it has wide promising applications in the field of biometric recognition. We propose using finger creases to locate and extract an object region. Then we use linear fitting to overcome the problem of finger rotation in the plane. The method of modular adaptive histogram equalization (MAHE) is presented to enhance image contrast and reduce computational cost. To extract the finger vein features, we use a fusion method, which can obtain clear and distinguishable vein patterns under different conditions. We used the Hausdorff average distance algorithm to examine the recognition performance of the system. The experimental results demonstrate that MAHE can better balance the recognition accuracy and the expenditure of time compared with three other methods. Our resulting equal error rate throughout the total procedure was 3.268% in a database of 153 finger vein images.

  12. Clinical Features of Primary Vein Grafts in Free Tissue Transfers

    OpenAIRE

    Mitsuru Nemoto; Kenichi Kumazawa; Eiju Uchinuma; Natsuko Kounoike; Akira Takeda

    2015-01-01

    The outcomes of free tissue transfers combined with vein grafts have been inconsistent, and discussions continue regarding their appropriate use. Of the 142 free tissue transfers that we performed from January 2004 to December 2011, we retrospectively analyzed 15 consecutive patients who underwent free tissue transfers in combination with vein grafts. Etiologies included trauma (8 patients), infection (4), and tumor (3). Types of free tissue transfers were fibula (4), anterolateral thigh (3),...

  13. Ovarian Vein Thrombosis as a Complication of Laparoscopic Surgery

    OpenAIRE

    Anu Gupta; Natasha Gupta; Josef Blankstein; Richard Trester

    2015-01-01

    Ovarian vein thrombosis (OVT) is an extremely rare but life-threatening complication of the postpartum period. It has never been reported as a complication of laparoscopic surgery. We report a case of right ovarian vein thrombosis that occurred in the postoperative period after patient underwent laparoscopic salpingectomy for a right side ectopic pregnancy. She presented with 1-week history of abdominal pain and fever. A complete workup for fever was performed and was found negative. Computed...

  14. Branch retinal vein occlusion associated with quetiapine fumarate

    Directory of Open Access Journals (Sweden)

    Siang Lim

    2011-08-01

    Full Text Available Abstract Background To report a case of branch retinal vein occlusion in a young adult with bipolar mood disorder treated with quetiapine fumarate. Case Presentation A 29 years old gentleman who was taking quetiapine fumarate for 3 years for bipolar mood disorder, presented with sudden vision loss. He was found to have a superior temporal branch retinal vein occlusion associated with hypercholesterolemia. Conclusion Atypical antipsychotic drugs have metabolic side effects which require regular monitoring and prompt treatment.

  15. Sciatica caused by a dilated epidural vein: MR findings

    Energy Technology Data Exchange (ETDEWEB)

    Demaerel, P.; Petre, C.; Wilms, G. [Dept. of Radiology, Catholic University of Leuven (Belgium); Plets, C. [Dept. of Neurosurgery, Catholic University of Leuven (Belgium)

    1999-02-01

    We report the MR imaging findings in a 41-year-old woman presenting with sudden low back pain and sciatica. At surgery a dilated epidural vein was found compressing the nerve root. The MR findings may suggest the diagnosis. Magnetic resonance imaging of a dilated epidural vein or varix causing sciatica has not been reported until now. (orig.) (orig.) With 1 fig., 4 refs.

  16. Sheathotomy in complicated cases of branch retinal vein occlusion

    DEFF Research Database (Denmark)

    Crafoord, S.; Karlsson, N.; Cour, M. la

    2008-01-01

    Purpose: To report the clinical experience and results of using a microsurgical technique to decompress the arteriovenous connection in complicated branch retinal vein occlusion (BRVO) combined with haemorrhage, oedema an ischaemia. Methods: We carried out a retrospective, non-randomized, interve......Purpose: To report the clinical experience and results of using a microsurgical technique to decompress the arteriovenous connection in complicated branch retinal vein occlusion (BRVO) combined with haemorrhage, oedema an ischaemia. Methods: We carried out a retrospective, non...

  17. Plantar Vein Thrombosis: An Unusual Cause of Plantar Pain

    OpenAIRE

    Vansevenant, Milan; Vanhoenacker, Filip M.

    2015-01-01

    We present a case of an 80-year-old man with progressive pain for 5 days at the medial and plantar aspect of the left heel. Wearing shoes aggravated the pain. Ultrasound and magnetic resonance imaging (MRI) revealed thrombosis of the medial plantar veins. Plantar vein thrombosis is a rare condition. The clinical symptoms are non-specific and can be confused with plantar fasciitis. It has been associated with hypercoagulable conditions, foot trauma and recent surgery. The imaging modality of c...

  18. Chylous ascites caused by acute pancreatitis with portal vein thrombosis

    OpenAIRE

    Park, Dong Eun; Chae, Kwon Mook

    2011-01-01

    Chylous ascites is defined as the accumulation of chyle in the peritoneum due to obstruction or rupture of the peritoneal or retroperitoneal lymphatic glands. Chylous ascites that arises from acute pancreatitis with portal vein thrombosis is very rare. We report here on a case of chylous ascite that was caused by acute pancreatitis with portal vein thrombosis, in which the patient showed an impressive response to conservative therapy with total parenteral nutrition and octerotide. We also rev...

  19. The mechanics of intersecting echelon veins and pressure solution seams in limestone

    Science.gov (United States)

    Seyum, Solomon; Pollard, David D.

    2016-08-01

    Many studies that describe the formation of echelon vein arrays relate the causative stresses implicitly to the deformation, reliant on simple shear kinematics, such that the vein-to-array angle and the array width are the primary physical quantities. In contrast, we identify twelve physical quantities to describe echelon veins in two dimensions, including coeval, vein-intersecting, pressure solution seams. A finite element method is used to reproduce vein shapes in linear elastic and elastic-perfectly plastic model limestone. Model vein geometries are designed using values within the range of geometries measured from echelon veins at Raplee Anticline and Comb Monocline, Utah. Four physical quantities are significant for describing echelon vein shapes: vein spacing, vein-array angle, limestone elastic stiffness, and closing of orthogonal pressure solution seams. Pressure solution seam closing influences the mechanical interaction between adjacent veins, and for a range of conditions, causes a nearly linear vein opening distribution (triangular shapes) and encourages straight vein propagation, both of which approximate field measurements. Model results show that small spacing of veins with seams and large vein-array angles promote straight vein traces in limestone with stiffness typical of laboratory measurements, given the physical geologic conditions inferred from the burial history of the limestone strata.

  20. [Treatment of nontumoral portal vein thrombosis in cirrhosis].

    Science.gov (United States)

    Bañares, Rafael; Catalina, María-Vega

    2014-07-01

    Portal vein thrombosis in cirrhosis is a relatively common complication associated with the presence of an accompanying prothrombotic phenotype of advanced cirrhosis. The consequences of portal vein thrombosis are relevant because it can be associated with impaired hepatic function, might contraindicate hepatic transplantation and could increase morbidity in the surgical procedure. There is controversy concerning the most effective treatment of portal vein thrombosis, which is based on information that is seldom robust and whose primary objective is to achieve a return to vessel patency. Various studies have suggested that starting anticoagulation therapy early is associated with portal vein repatency more frequently than without treatment and has a low rate of complications. There are no proven data on the type of anticoagulant (low-molecular-weight heparins or dicoumarin agents) and the treatment duration. The implementation of TIPS is technically feasible in thrombosis without cavernous transformation and is associated with portal vein recanalization in a significant proportion of cases. Thrombolytic therapy does not appear to present an adequate balance between efficacy and safety; its use is therefore not supported for this indication. The proper definition of treatment for portal vein thrombosis requires properly designed studies to delimit the efficacy and safety of the various alternatives.

  1. Vein graft adaptation and fistula maturation in the arterial environment.

    Science.gov (United States)

    Lu, Daniel Y; Chen, Elizabeth Y; Wong, Daniel J; Yamamoto, Kota; Protack, Clinton D; Williams, Willis T; Assi, Roland; Hall, Michael R; Sadaghianloo, Nirvana; Dardik, Alan

    2014-05-01

    Veins are exposed to the arterial environment during two common surgical procedures, creation of vein grafts and arteriovenous fistulae (AVF). In both cases, veins adapt to the arterial environment that is characterized by different hemodynamic conditions and increased oxygen tension compared with the venous environment. Successful venous adaptation to the arterial environment is critical for long-term success of the vein graft or AVF and, in both cases, is generally characterized by venous dilation and wall thickening. However, AVF are exposed to a high flow, high shear stress, low-pressure arterial environment and adapt mainly via outward dilation with less intimal thickening. Vein grafts are exposed to a moderate flow, moderate shear stress, high-pressure arterial environment and adapt mainly via increased wall thickening with less outward dilation. We review the data that describe these differences, as well as the underlying molecular mechanisms that mediate these processes. Despite extensive research, there are few differences in the molecular pathways that regulate cell proliferation and migration or matrix synthesis, secretion, or degradation currently identified between vein graft adaptation and AVF maturation that account for the different types of venous adaptation to arterial environments.

  2. Giant Intrahepatic Portal Vein Aneurysm: Leave it or Treat it?

    Science.gov (United States)

    Shrivastava, Amit; Rampal, Jagdeesh S; Nageshwar Reddy, D

    2017-03-01

    Portal vein aneurysm (PVA) is a rare vascular dilatation of the portal vein. It is a rare vascular anomaly representing less than 3% of all visceral aneurysms and is not well understood. Usually, PVA are incidental findings, are asymptomatic, and clinical symptoms are proportionally related to size. Patients present with nonspecific epigastric pain or gastrointestinal bleeding with underlying portal hypertension. PVA may be associated with various complications such as biliary tract compression, portal vein thrombosis/rupture, duodenal compression, gastrointestinal bleeding, and inferior vena cava obstruction. Differential diagnoses of portal vein aneurysms are solid, cystic, and hypervascular abdominal masses, and it is important that the radiologists be aware of their multi-modality appearance; hence, the aim of this article was to provide an overview of the available literature to better simplify various aspects of this rare entity and diagnostic appearance on different modality with available treatment options. In our case, a 55-year-old male patient came to the gastroenterology OPD for further management of pancreatitis with portal hypertension and biliary obstruction with plastic stents in CBD and PD for the same. In this article, we have reported a case of largest intrahepatic portal vein aneurysm and its management by endovascular technique. As per our knowledge, this is the largest intrahepatic portal vein aneurysm and first case where the endovascular technique was used for the treatment of the same.

  3. Robust finger vein ROI localization based on flexible segmentation.

    Science.gov (United States)

    Lu, Yu; Xie, Shan Juan; Yoon, Sook; Yang, Jucheng; Park, Dong Sun

    2013-10-24

    Finger veins have been proved to be an effective biometric for personal identification in the recent years. However, finger vein images are easily affected by influences such as image translation, orientation, scale, scattering, finger structure, complicated background, uneven illumination, and collection posture. All these factors may contribute to inaccurate region of interest (ROI) definition, and so degrade the performance of finger vein identification system. To improve this problem, in this paper, we propose a finger vein ROI localization method that has high effectiveness and robustness against the above factors. The proposed method consists of a set of steps to localize ROIs accurately, namely segmentation, orientation correction, and ROI detection. Accurate finger region segmentation and correct calculated orientation can support each other to produce higher accuracy in localizing ROIs. Extensive experiments have been performed on the finger vein image database, MMCBNU_6000, to verify the robustness of the proposed method. The proposed method shows the segmentation accuracy of 100%. Furthermore, the average processing time of the proposed method is 22 ms for an acquired image, which satisfies the criterion of a real-time finger vein identification system.

  4. Robust Finger Vein ROI Localization Based on Flexible Segmentation

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    Dong Sun Park

    2013-10-01

    Full Text Available Finger veins have been proved to be an effective biometric for personal identification in the recent years. However, finger vein images are easily affected by influences such as image translation, orientation, scale, scattering, finger structure, complicated background, uneven illumination, and collection posture. All these factors may contribute to inaccurate region of interest (ROI definition, and so degrade the performance of finger vein identification system. To improve this problem, in this paper, we propose a finger vein ROI localization method that has high effectiveness and robustness against the above factors. The proposed method consists of a set of steps to localize ROIs accurately, namely segmentation, orientation correction, and ROI detection. Accurate finger region segmentation and correct calculated orientation can support each other to produce higher accuracy in localizing ROIs. Extensive experiments have been performed on the finger vein image database, MMCBNU_6000, to verify the robustness of the proposed method. The proposed method shows the segmentation accuracy of 100%. Furthermore, the average processing time of the proposed method is 22 ms for an acquired image, which satisfies the criterion of a real-time finger vein identification system.

  5. Extrahepatic portal vein aneurysm: Two case reports of surgical intervention

    Institute of Scientific and Technical Information of China (English)

    Bi Jin; Yuan Sun; Yi-Qing Li; Yu-Guo Zhao; Chuan-Shan Lai; Xian-Song Feng; Chi-Dan Wan

    2005-01-01

    We report two cases of extrahepatic portal vein aneurysm,and both of them underwent surgical intervention. The first case had a mild pain in right upper quadrant of the abdomen; the second had no obvious symptoms. Physical examination revealed nothing abnormal. Both of them were diagnosed by magnetic resonance imaging angiography (MRA). One of the aneurysms was located at the main portal vein, the other, at the confluence of the superior mesenteric vein and the splenic vein, and these two places are exactly the most common locations of the extrahepatic portal vein aneurysm reported in the literature (30.7% each site). The first case underwent aneurysmorrhaphy and the second case, aneurysm resection with splenectomy. Both of them recovered soon after the operation, and the symptom of the first case was greatly alleviated. During the follow-up of half a year, no complication and adverse effect of surgical intervention was found and the color Doppler ultrasonography revealed no recurrence of the aneurysmal dilation. We suggest that surgical intervention can alleviate the symptom of the extrahepatic portal vein aneurysm and prevent its complications effectively and safely for low risk patients.

  6. Vein graft adaptation and fistula maturation in the arterial environment

    Science.gov (United States)

    Lu, Daniel Y; Chen, Elizabeth Y; Wong, Daniel J; Yamamoto, Kota; Protack, Clinton D; Williams, Willis T; Assi, Roland; Hall, Michael R; Sadaghianloo, Nirvana; Dardik, Alan

    2014-01-01

    Veins are exposed to the arterial environment during two common surgical procedures, creation of vein grafts and arteriovenous fistulae (AVF). In both cases veins adapt to the arterial environment that is characterized by different hemodynamic conditions and increased oxygen tension compared to the venous environment. Successful venous adaptation to the arterial environment is critical for long term success of the vein graft or AVF, and in both cases is generally characterized by venous dilation and wall thickening. However, AVF are exposed to a high flow, high shear stress, low pressure arterial environment, and adapt mainly via outward dilation with less intimal thickening. Vein grafts are exposed to a moderate flow, moderate shear stress, high pressure arterial environment, and adapt mainly via increased wall thickening with less outward dilation. We review the data that describe these differences, as well as the underlying molecular mechanisms that mediate these processes. Despite extensive research, there are few differences in the molecular pathways that regulate cell proliferation and migration or matrix synthesis, secretion, or degradation currently identified between vein graft adaptation and AVF maturation that account for the different types of venous adaptation to arterial environments. PMID:24582063

  7. [Research on optimization of imaging system of the hand vein optical properties].

    Science.gov (United States)

    Lan, Huiying; Shi, Yan; Wang, Longwu

    2013-10-01

    Due to the difficulties of the copying, vein identification has developed rapidly in recent years. The light source selection directly affects the image quality. This paper acquired by experiment the reflectivities of vein and non-vein irradiation with different wavelengths of near infra-red. Comparing the strength of reflectivities of various wave lengths, we found that there were the strongest contrasts between vein and non-vein in the 810 nm, and 810 nm near infra-red was suitable to a vein imaging light source. Finally, clear hand vein images were obtained with the selected light source.

  8. Leiomyosarcoma of inferior vena cava involving bilateral renal veins: Surgical challenges and reconstruction with upfront saphenous vein interposition graft for left renal vein outflow

    Directory of Open Access Journals (Sweden)

    Rishi Nayyar

    2010-01-01

    Full Text Available Leiomyosarcoma of inferior vena cava (IVC involving bilateral renal veins presents a surgical challenge. Herein, we report the successful management of two such cases using restoration of left renal venous outflow by saphenous vein interposition graft as first step of surgery. Then radical resection of tumor and right kidney was done. IVC was lastly reconstructed using Gore-Tex graft. This report highlights the surgical challenges to ensure radical resection. Furthermore, the importance of restoring left renal outflow in presence of concomitant right nephrectomy is discussed. Both the patients were disease free at six months with no loss of left renal glomerular filtration rate.

  9. Transsplenic portal vein reconstruction–transjugular intrahepatic portosystemic shunt in a patient with portal and splenic vein thrombosis

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    Jason T. Salsamendi, MD

    2016-09-01

    Full Text Available Portal vein thrombosis (PVT is a potential complication of cirrhosis and can worsen outcomes after liver transplant (LT. Portal vein reconstruction–transjugular intrahepatic portosystemic shunt (PVR-TIPS can restore flow through the portal vein (PV and facilitate LT by avoiding complex vascular conduits. We present a case of transsplenic PVR-TIPS in the setting of complete PVT and splenic vein (SV thrombosis. The patient had a 3-year history of PVT complicated by abdominal pain, ascites, and paraesophageal varices. A SV tributary provided access to the main SV and was punctured percutaneously under ultrasound scan guidance. PV access, PV and SV venoplasty, and TIPS placement were successfully performed without complex techniques. The patient underwent LT with successful end-to-end anastomosis of the PVs. Our case suggests transsplenic PVR-TIPS to be a safe and effective alternative to conventional PVR-TIPS in patients with PVT and SV thrombosis.

  10. Transsplenic portal vein reconstruction-transjugular intrahepatic portosystemic shunt in a patient with portal and splenic vein thrombosis.

    Science.gov (United States)

    Salsamendi, Jason T; Gortes, Francisco J; Shnayder, Michelle; Doshi, Mehul H; Fan, Ji; Narayanan, Govindarajan

    2016-09-01

    Portal vein thrombosis (PVT) is a potential complication of cirrhosis and can worsen outcomes after liver transplant (LT). Portal vein reconstruction-transjugular intrahepatic portosystemic shunt (PVR-TIPS) can restore flow through the portal vein (PV) and facilitate LT by avoiding complex vascular conduits. We present a case of transsplenic PVR-TIPS in the setting of complete PVT and splenic vein (SV) thrombosis. The patient had a 3-year history of PVT complicated by abdominal pain, ascites, and paraesophageal varices. A SV tributary provided access to the main SV and was punctured percutaneously under ultrasound scan guidance. PV access, PV and SV venoplasty, and TIPS placement were successfully performed without complex techniques. The patient underwent LT with successful end-to-end anastomosis of the PVs. Our case suggests transsplenic PVR-TIPS to be a safe and effective alternative to conventional PVR-TIPS in patients with PVT and SV thrombosis.

  11. The anatomical variations of sylvian veins and cisterns.

    Science.gov (United States)

    Aydin, I H; Tüzün, Y; Takçi, E; Kadioğlu, H H; Kayaoğlu, C R; Barlas, E

    1997-06-01

    The anatomical variations of sylvian vein and cistern were investigated during the pterional approach in 750 operative cases with different pathologies. All patients were operated on at the Neurosurgical Department of Ataturk University Medical School, Erzurum, Turkiye. The patients underwent surgery for the lesions necessitating the right or left pterional approach. The findings were recorded during surgical intervention and observed through the operative sketches of the pathologies, the slides, and videotapes of the operations. In our study, we surgically classified the variations of sylvian vein, according to its branching and draining patterns. Type I: The fronto-orbital (frontosylvian), fronto-parietal (parietosylvian) and anterior temporal (temporosylvian) veins drain into one sylvian vein. Type II: Two superficial sylvian veins with separated basal vein draining into the sphenoparietal and Rosenthal's basal vein. Type III: Two superficial sylvian veins draining into the sphenoparietal and the superior petrosal veins. Type IV: Hypoplastic superficial sylvian vein and the deep one. Four types of sylvian vein variations were defined as follows. The type I was seen in 52.8% (n = 396), the type II was found in 19.2% (n = 144), type III was recorded in 18.2% (n = 137), and type IV, or hypoplastic and deep form was discovered in 9.8% (n = 73) of patients. The coursing of sylvian vein was in the temporal side (Temporal Coursing) in 62.4 percent of the cases (n = 469), in the frontal side (Frontal Coursing) in 25 % of the patients (n = 187) and in 9 percent of the cases (n = 67) in the deep localization (Deep Coursing). Only 3.6% of the cases (n = 27) showed Mixed Coursing. The variations of the sylvian cisterns were classified into three types, according to the relationships between the lateral fronto-orbital gyrus and the superior temporal gyrus. In Sylvian type, the frontal and temporal lobes are loosely (Sylvian Type A, wide and large) or tightly (Sylvian Type B

  12. Latin American Consensus on Retinal Vein Occlusion

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    Francisco J. Rodriguez

    2016-01-01

    Full Text Available The introduction of anti-VEGF agents has allowed unprecedented progress in the management and treatment of ophthalmologic conditions characterized by an increased vascular permeability and intraocular neovascularization. One of these conditions is retinal vein occlusion (RVO.  RVO is one of the most common causes of reduced vision due to retinal vascular disease. Without timely treatment, macular edema, macular ischemia, neovascularization and other potential sequelae of RVO can lead to photoreceptor cell death and consequently to irreversible vision loss.   Treatments for this indication that have been recently approved by several regulatory agencies throughout the world include: the VEGF inhibitor ranibizumab (Lucentis, Genentech, the VEGF and placental growth factor inhibitor aflibercept (Eylea, Regeneron Pharmaceuticals and Bayer HealthCare, and a slow release intravitreal implant of dexamethasone (Ozurdex, Allergan. In addition bevacizumab (Avastin, Genentech has been used extensively in an off-label manner.   These new treatments allow us to preserve vision for many RVO patients who could not have expected such favorable results just 5 or 6 years ago. However, not every treatment is effective for every patient, and whether one option is superior to another or a combination of options is superior to monotherapy, have yet to be definitively determined.   A growing body of literature with strong evidence supports the use of these new treatments. However, in several instances the literature is not conclusive to support unified management of RVO. This document is a summary analysis on RVO assembled by a group of specialists summoned by the Pan-American Vitreo-Retinal Society (SPRV to participate in this Latin American consensus.

  13. A Dorsal Hand Vein Recognition-based on Local Gabor Phase Quantization with Whitening Transformation

    OpenAIRE

    K. Premalatha; Anantha kumar T; Natarajan A M

    2014-01-01

    The hand vein pattern is a biometric feature in which the actual pattern is the shape of the vein network and its characteristics are the vein features. This paper investigates a new approach for dorsal hand vein pattern identification from grey level dorsal hand vein information. In this study Gabor filter quadrature pair is employed to compute locally in a window for every pixel position to extract the phase information. The phases of six frequency coefficients are quantized and it is used ...

  14. Percutaneus treatment of varicose veins with bipolar radiofrequency ablation

    Energy Technology Data Exchange (ETDEWEB)

    Boon, R.; Akkersdijk, G.J.M. [Department of Surgery, Spaarne Hospital, Hoofddorp (Netherlands); Nio, D., E-mail: dnio@spaarneziekenhuis.n [Department of Surgery, Spaarne Hospital, Hoofddorp (Netherlands)

    2010-07-15

    The traditional surgical treatment of an incompetent great saphenous vein (GSV) and small saphenous vein (SSV) is challenged by endovenous techniques. Bipolar radio frequency induced thermo therapy (RFITT) is a new endovenous treatment, which occludes the vein by using the venous wall as a conductor. Linear endovenous energy densitiy (LEED) describes the amount of energy used for vein closure. Material/methods: From March 2007 till April 2009, two cohorts (23 W and 20 W) were compared, respectively 280 and 178 patients. GSV and SSV were separately analyzed. Follow-up was performed at 3 weeks and 1 year post-operatively with duplex ultrasound, to assess vein closure and perioperative complaints. A visual analog scale (VAS) pain score (range 0-10) was documented. For patients operated after October 2008 follow-up was performed at least 6 months after surgery. Results: 528 GSV and 76 SSV were treated. For the GSV a significant difference in LEED 40.8 17.1 in the 20 W cohort was found, resulting in higher occlusion rates 90.6% compared to 82.7% after 3 weeks. Follow-up of 1 year in the 20 W cohort showed 88.7% occlusion. Multivariate analysis showed that pullback speed (OR 3.7, CI 1.1-12.4) and CEAP classification (OR 3.1, CI 1.7-5.6) were significant predictors for vein occlusion. Despite a higher LEED, post-operative complaints were not significantly worse. Conclusion: RFITT is a safe and effective method to treat incompetent saphenous veins. Slower pullback speed with higher LEED results in higher closure rates without causing more pain.

  15. Veias linfonodais: uma causa pouco conhecida de varizes Lymph node veins: a little-known cause of varicose veins

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    André Paciello Romualdo

    2008-12-01

    Full Text Available As veias linfonodais fazem parte de uma rede venosa no triângulo de Scarpa, que liga em vários pontos o sistema venoso superficial às veias profundas, e podem tanto ser causa de incompetência do sistema venoso superficial quanto estar envolvidas na recorrência pós-safenectomia. Na rotina diária dos exames de Doppler venoso de membros inferiores, temos notado de maneira cada vez mais freqüente a associação das veias linfonodais com varizes primárias e recorrentes. A adequada caracterização dessas veias pode ajudar na compreensão do mecanismo fisiopatológico do aparecimento das varizes e permitir um controle e tratamento mais dirigidos. Este artigo lança luz sobre os aspectos anatômicos e fisiológicos das veias linfonodais, objetivando chamar a atenção dos profissionais envolvidos no diagnóstico de doenças venosas dos membros inferiores para uma causa pouco difundida de varizes.Lymph node veins are part of a venous network in Scarpa"s triangle, communicating in many points the superficial venous system and the deep veins, and may either be the cause of incompetence of the superficial venous system, or be involved in recurrent varicose veins after saphenous vein stripping. In the daily routine of venous Doppler examination of the lower extremities, an increasingly frequent association of lymph node veins with primary and/or recurrent varicose veins has been noticed. Appropriate characterization of these veins may help to understand the pathophysiological mechanism of varicose vein appearance and provide a more focused approach to follow-up and treatment. This article sheds some light on the anatomical and physiological aspects of lymph node veins, drawing the attention of professionals involved in the diagnosis of venous disorders of the lower extremities to a little-known cause of varicose veins.

  16. Multiple ligation of the proximal greater saphenous vein in the CHIVA treatment of primary varicose veins

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    Roberto Delfrate

    2014-06-01

    Full Text Available Saphenous femoral disconnection is the key point of most surgical techniques in the treatment of primary varicose vein surgery. The aim of this study is to compare and analyze different techniques for conservative saphenousfemoral ligation or disconnection. These techniques can be to perform mini invasive open surgery and are suitable for implementation of the conservative hemodynamic correction of venous insufficiency (CHIVA method. The aim was to present the follow-up by retrospective analysis of three different ligation-disconnection techniques of the proximal great saphenous vein (GSV according to the CHIVA method at the GSV end, i.e. between the very end of the GSV and the first arch tributary, according to the CHIVA method. The first thecnique consisted of a surgical division (crossotomy. The other two consisted of triple superposed ligation with No. 2 non-absorbable braided coated suture without division labeled TSFL (triple saphenous flush ligation and No. 0 polypropylenene ligation TPL (triple polypropylene ligation. The difference between TSFL and TPL was in the thickness and type of material of the thread, though both were non-absorbable. The follow up of 56 TPL procedures, 61 crossotomy procedures, and 82 TSFL procedures was analysed. The follow-up consisted of checking the sapheno-femoral junction occlusion with Duplex color ultra sound. The incidence rates of neovascularization (new vessels in the ligation or surgical disconnection site with saphenous-femoral reflux during the Valsalva maneuver were: 4.9% for the crossotomy group, 6.1% for the TSFL group and 37.5% for the TPL group. The data analysed show satisfactory results with both crossotomy and TSFL. Crossotomy has proven to be an effective technique for performing saphenous-femoral disconnection, but TSFL could also be a reliable, safe and low-cost varicose mini-invasive surgery in outpatients. TPL appeared to be less reliable.

  17. Evaluation of endoscopic vein extraction on structural and functional viability of saphenous vein endothelium

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    Lu Xiu-Gui

    2011-06-01

    Full Text Available Abstract Objectives Endothelial injury during harvest influences graft patency post CABG. We have previously shown that endoscopic harvest causes structural and functional damage to the saphenous vein (SV endothelium. However, causes of such injury may depend on the extraction technique. In order to assess this supposition, we evaluated the effect of VirtuoSaph endoscopic SV harvesting technique (VsEVH on structural and functional viability of SV endothelium using multiphoton imaging, biochemical and immunofluorescence assays. Methods Nineteen patients scheduled for CABG were prospectively identified. Each underwent VsEVH for one portion and "No-touch" open SV harvesting (OSVH for another portion of the SV. A two cm segment from each portion was immersed in GALA conduit preservation solution and transported overnight to our lab for processing. The segments were labeled with fluorescent markers to quantify cell viability, calcium mobilization and generation of nitric oxide. Morphology, expression, localization and stability of endothelial caveolin, eNOS, von Willebrand factor and cadherin were evaluated using immunofluorescence, Western blot and multiphoton microscopy (MPM. Results Morphological, biochemical and immunofluorescence parameters of viability, structure and function were well preserved in VsEVH group as in OSVH group. However, tonic eNOS activity, agonist-dependent calcium mobilization and nitric oxide production were partially attenuated in the VsEVH group. Conclusions This study indicates that VirtuoSaph endoscopic SV harvesting technique preserves the structural and functional viability of SV endothelium, but may differentially attenuate the vasomotor function of the saphenous vein graft. Ultramini-Abstract Endoscopic extraction preserved the structure and function, but attenuated the calcium mobilization and nitric oxide generation in human SV endothelium.

  18. Improved Quantification of Cerebral Vein Oxygenation Using Partial Volume Correction.

    Science.gov (United States)

    Ward, Phillip G D; Fan, Audrey P; Raniga, Parnesh; Barnes, David G; Dowe, David L; Ng, Amanda C L; Egan, Gary F

    2017-01-01

    Purpose: Quantitative susceptibility mapping (QSM) enables cerebral venous characterization and physiological measurements, such as oxygen extraction fraction (OEF). The exquisite sensitivity of QSM to deoxygenated blood makes it possible to image small veins; however partial volume effects must be addressed for accurate quantification. We present a new method, Iterative Cylindrical Fitting (ICF), to estimate voxel-based partial volume effects for susceptibility maps and use it to improve OEF quantification of small veins with diameters between 1.5 and 4 voxels. Materials and Methods: Simulated QSM maps were generated to assess the performance of the ICF method over a range of vein geometries with varying echo times and noise levels. The ICF method was also applied to in vivo human brain data to assess the feasibility and behavior of OEF measurements compared to the maximum intensity voxel (MIV) method. Results: Improved quantification of OEF measurements was achieved for vessels with contrast to noise greater than 3.0 and vein radii greater than 0.75 voxels. The ICF method produced improved quantitative accuracy of OEF measurement compared to the MIV approach (mean OEF error 7.7 vs. 12.4%). The ICF method provided estimates of vein radius (mean error partial volume maps (root mean-squared error partial volume estimates from the ICF method.

  19. Alteration and vein mineralization, Ladwig uranium mine, Jefferson County, Colorado

    Science.gov (United States)

    Wallace, Alan R.

    1979-01-01

    Uranium ore at the Ladwig mine, Jefferson County, Colo., occurs in steeply dipping, northwest-striking faults and related fractures with a carbonate-adularia assemblage that forms in altered wallrocks and fills veins. The faults occur between large intrusive pegmatites and garnetiferous gneisses of Precambrian age, and were reactivated as the result of the early Paleocene uplift of the Front Range foothills. Mineralization in the deposit includes both wallrock alteration and vein filling. Alteration was intense but local, and chiefly involved the carbonatization of mafic minerals in the wallrocks. Felsic minerals in the wallrocks are relatively unaltered. The veins are filled with an adularia-pitchblende-carbonate assemblage with minor related sulfides and coffinite. Many of the iron-bearing carbonates in both the alteration and vein assemblages have been altered to hematite. The mineralization and alteration are believed to have formed in response to initially high amounts of CO2 and the subsequent release of dissolved CO2 by boiling or effervescence. Uranium, carried in a dicarbonate complex, was precipitated directly as pitchblende when the CO2 was released. The expulsion of H+ during boiling created a net oxidizing environment which oxidized the iron-bearing carbonates. Late stage calcite and sulfides were deposited in existing voids in the veins.

  20. Hand Vein Recognition Based on Improved Template Matching

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    Jun Wang

    2014-12-01

    Full Text Available An improved template-construction method for hand vein recognition is presented. The accomplishment of the new algorithm involves several steps. First, we design the power-controlled multispectral vein acquisition handset to establish high-quality hand vein database. Second, we propose an improved valley-shaped enhancement operator with NiBlack algorithm to realize vein segmentation. Third, we get a basic-shaped template after dilation and erosion operation in the four neighborhoods firstly, and then we can get the final matching template combining all the shapes after the process of filling the connected region whose threshold is smaller than the one we set according to the experiment effect. Finally we design the hand vein recognition experiments using the designed template and traditional template respectively. The recognition rate of the improved template is 96.6% under the 1:1 mode and 95.75% under the 1:N mode while the recognition rate of the traditional template is 89.2 under the 1:1 mode and 88.2 under the 1:N mode.

  1. Finger Vein Recognition Based on Personalized Weight Maps

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    Lu Yang

    2013-09-01

    Full Text Available Finger vein recognition is a promising biometric recognition technology, which verifies identities via the vein patterns in the fingers. Binary pattern based methods were thoroughly studied in order to cope with the difficulties of extracting the blood vessel network. However, current binary pattern based finger vein matching methods treat every bit of feature codes derived from different image of various individuals as equally important and assign the same weight value to them. In this paper, we propose a finger vein recognition method based on personalized weight maps (PWMs. The different bits have different weight values according to their stabilities in a certain number of training samples from an individual. Firstly we present the concept of PWM, and then propose the finger vein recognition framework, which mainly consists of preprocessing, feature extraction, and matching. Finally, we design extensive experiments to evaluate the effectiveness of our proposal. Experimental results show that PWM achieves not only better performance, but also high robustness and reliability. In addition, PWM can be used as a general framework for binary pattern based recognition.

  2. Coronary magnetic resonance vein imaging: imaging contrast, sequence, and timing.

    Science.gov (United States)

    Nezafat, Reza; Han, Yuchi; Peters, Dana C; Herzka, Daniel A; Wylie, John V; Goddu, Beth; Kissinger, Kraig K; Yeon, Susan B; Zimetbaum, Peter J; Manning, Warren J

    2007-12-01

    Recently, there has been increased interest in imaging the coronary vein anatomy to guide interventional cardiovascular procedures such as cardiac resynchronization therapy (CRT), a device therapy for congestive heart failure (CHF). With CRT the lateral wall of the left ventricle is electrically paced using a transvenous coronary sinus lead or surgically placed epicardial lead. Proper transvenous lead placement is facilitated by the knowledge of the coronary vein anatomy. Cardiovascular MR (CMR) has the potential to image the coronary veins. In this study we propose and test CMR techniques and protocols for imaging the coronary venous anatomy. Three aspects of design of imaging sequence were studied: magnetization preparation schemes (T(2) preparation and magnetization transfer), imaging sequences (gradient-echo (GRE) and steady-state free precession (SSFP)), and imaging time during the cardiac cycle. Numerical and in vivo studies both in healthy and CHF subjects were performed to optimize and demonstrate the utility of CMR for coronary vein imaging. Magnetization transfer was superior to T(2) preparation for contrast enhancement. Both GRE and SSFP were viable imaging sequences, although GRE provided more robust results with better contrast. Imaging during the end-systolic quiescent period was preferable as it coincided with the maximum size of the coronary veins.

  3. EndoVascular Laser Therapy (EVLT of Varicose Veins

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    S. Akhlaghpour

    2005-08-01

    Full Text Available Introduction & Background: Tens of millions of people – up to 40% of women and 25% of men – suffer from lower limb varicose veins. Several risk factors are also identified including genetics, gender, age, obesity, hor-mones, pregnancy, and occupation. Sclerotheraphy is commonly used to treat small varicose veins. Medium-sized and large varicose veins can be removed by a surgical procedure called Stab avulsion or phlebectomy. EVLT is a new alternative surgical method for varicose veins. Patients & Methods: Using 980nm and 940nm diode laser with a 600micron bare-tipped fiber endoluminally under ultrasound and Doppler monitoring, we treated 43 patients in Noor Vein Clinic, Tehran, Iran. Results: The procedure was well tolerated by all patients with just a local anesthesia. No major complications were encountered. We noticed that 980nm and 940nm are the perfect wave lengths causing less post-operational discomfort for patients with enhanced recovery time due to fewer traumas to the adjacent tissues. One small size skin burn and local paresthesia were observed. Conclusion: We concluded that EVLT with diode laser is a safe, fast, and effective method with low recurrence rate.

  4. Occlusion of the pig superior sagittal sinus, bridging and cortical veins: multistep evolution of sinus-vein thrombosis.

    Science.gov (United States)

    Fries, G; Wallenfang, T; Hennen, J; Velthaus, M; Heimann, A; Schild, H; Perneczky, A; Kempski, O

    1992-07-01

    Cerebral sinus-vein thrombosis may lead to severe hemodynamic changes, elevated intracranial pressure (ICP), and brain edema. It is supposed that progression of the thrombus from the sinus into bridging and cortical veins plays a key role in the development of these pathophysiological changes, but this hypothesis lacks experimental proof. The aim of this study, using a novel animal model of sinus-vein thrombosis, was to evaluate the effects of a standardized occlusion of the superior sagittal sinus and its bridging and cortical veins on hemodynamic alterations, on brain water content, and on ICP in domestic pigs. In 10 animals, the middle third of the superior sagittal sinus was occluded with a catheter-guided balloon. Five of these pigs received an additional injection of 1 ml fibrin glue into the superior sagittal sinus anterior to the inflated balloon, leading to an obstruction of bridging and cortical veins. In five control animals the balloon was inserted but not inflated. Five pigs underwent cerebral angiography. Four hours after occlusion, the brains were frozen in liquid nitrogen, and coronal slices were examined for Evans blue dye extravasation, regional water content, and histological changes. Occlusion of the superior sagittal sinus alone did not affect ICP or cerebral perfusion pressure (CPP). The additional injection of fibrin glue caused an obstruction of cortical and bridging veins as well as severe increases in mean (+/- standard deviation) ICP to 49.4 +/- 14.3 mm Hg, compared with 8.3 +/- 4.5 mm Hg in sham-treated controls and 7.1 +/- 3.9 mm Hg in animals with occlusion of the superior sagittal sinus alone. There was also a steep fall in the mean CPP to 34.2 +/- 19.6 mm Hg compared with 96.4 +/- 13.8 mm Hg in the control group. White-matter water content anterior to the occlusion site was elevated to 81.9 +/- 3.7 gm/100 gm frozen weight in the fibrin group as compared to 70.7 +/- 2.2 gm/100 gm in controls. Posterior to the occlusion site, water

  5. Intraosseous anomalous drainage: a rare case of pretibial varicose vein.

    Science.gov (United States)

    Moraes, Frederico Barra de; Camelo, Carolina Parreira Ribeiro; Brandão, Marcelo Luiz; Fávaro, Pedro Ivo; Barbosa, Tercília Almeida; Barbosa, Raul Carlos

    2016-01-01

    Valve failure with reflux and post-thrombotic syndrome are the factors most commonly correlated with varicose disease. Other rare etiologies can be put forward when these two main causes are ruled out. We report a case in which a young man presented chronic pain in the left tibia, varicose veins in the lower limbs and frequent occurrences of erysipelas. During investigation of the etiology of the varicose veins, radiographs and magnetic resonance imaging of the left leg were requested. These showed images suggestive of an osteolytic lesion in the tibia, but led us to the diagnosis of an intraosseous vein with anomalous drainage. This was confirmed through vascular examinations comprising Doppler venous flow measurement and phlebography. Recognition of this rare intraosseous anomaly is fundamental for proper patient management, but an intraosseous surgical approach is unnecessary.

  6. The pathology of facial vein blood sampling in mice

    DEFF Research Database (Denmark)

    Hansen, Ket; Harslund, Jakob le Fèvre; Bollen, Peter

    2014-01-01

    Introduction: The use of retro-orbital blood sampling is prohibited in Denmark. For this reason, alternative methods are used for obtaining larger blood samples of a good quality. The facial vein is generally recommended for this. However, we have experienced discomfort for mice subjected to facial...... vein blood sampling. Therefore, we investigated if this technique was associated with pathological changes of the jaw region. Methods: 43 NMRI mice were subjected to facial vein blood sampling by using the lancet method during 12 months, starting at the age of 8 weeks. The mice were restrained manually...... by the scruff and a lancet was placed 2-3 mm caudally to the freckle on the lower jaw, and the skin was punctured. After sampling, brief compression by a cotton swab was applied, if bleeding did not stop. Two days after the last blood sampling, the mice were euthanized by an overdose of pentobarbital...

  7. Portal vein thrombosis with renal cell carcinoma: a case report.

    Science.gov (United States)

    D'Elia, Carolina; Cerruto, Maria Angela; Molinari, Alberto; Piovesan, Raffaella; Cavicchioli, Francesca; Minja, Anila; Novella, Giovanni; Artibani, Walter

    2014-01-01

    Portal vein thrombosis refers to an obstruction of blood flow in the portal vein; this rare disease can be both local and systemic. Local risk factors, accounting for about 70% of cases, can be abdominal cancers, inflammatory of infective diseases, surgical procedures or cirrhosis. A 62-year-old man, affected by hypertension and taking acetylsalicylic acid after a myocardial infarction in 1994, developed deep venous thrombosis on the right leg. Six months later the patient was admitted to the emergency unit due to abdominal pain. A CT scan revealed the presence of a complete splanchnic vein thrombosis and a primary tumor on the right kidney. The patient was treated with total parenteral nutrition and intravenous solution of heparin sodium first and then, because of occurrence of allergy, fondaparinux, with improvement of the abdominal pain. Subsequently he underwent right radical nephrectomy.

  8. Uterine myomatosis and portal vein thrombosis: a rare association

    Directory of Open Access Journals (Sweden)

    Elamurugan Sujindra

    2016-09-01

    Full Text Available Uterine leiomyomas are the most common pelvic tumors in women and occur in 20 and ndash;30% of women over 30 years of age. Many complications are seen with fibroid. We report a rare case of a large uterine leiomyoma associated with portal vein thrombosis. 50-year patient presented lower abdomen swelling associated with pain and breathlessness, diagnosed as multiple fibroids. She had massive splenomegaly. Abdomen Doppler revealed splenomegaly with thrombosis of portal, splenic and superior mesenteric vein. Total abdominal hysterectomy with bilateral salpingo-oophorectomy was done. Iron deficiency anaemia with thrombocytosis caused by fibroid was the identified cause for portal vein thrombosis. [Int J Reprod Contracept Obstet Gynecol 2016; 5(9.000: 3265-3267

  9. Selection and Outcome of Portal Vein Resection in Pancreatic Cancer

    Energy Technology Data Exchange (ETDEWEB)

    Nakao, Akimasa [Department of Surgery II, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550 (Japan)

    2010-11-24

    Pancreatic cancer has the worst prognosis of all gastrointestinal neoplasms. Five-year survival of pancreatic cancer after pancreatectomy is very low, and surgical resection is the only option to cure this dismal disease. The standard surgical procedure is pancreatoduodenectomy (PD) for pancreatic head cancer. The morbidity and especially the mortality of PD have been greatly reduced. Portal vein resection in pancreatic cancer surgery is one attempt to increase resectability and radicality, and the procedure has become safe to perform. Clinicohistopathological studies have shown that the most important indication for portal vein resection in patients with pancreatic cancer is the ability to obtain cancer-free surgical margins. Otherwise, portal vein resection is contraindicated.

  10. Pancreatic laceration and portal vein thrombosis in blunt trauma abdomen

    Directory of Open Access Journals (Sweden)

    Rastogi Rajul

    2008-01-01

    Full Text Available Injuries to the pancreas by blunt trauma are uncommon. The association of pancreatic injury with acute portal vein thrombosis secondary to blunt trauma abdomen is furthermore rare. The early diagnosis of the pancreas with injury to the portal vein is challenging and difficult. These injuries are associated with high morbidity and mortality, particularly if the diagnosis is delayed. Accurate and early diagnosis is therefore imperative and computed tomography plays a key role in detection. We present a case of child with a rare combination of pancreatic laceration and acute portal vein thrombosis following a blunt trauma to the abdomen. With extensive literature search we found no such cases has been described previously.

  11. Vestibular tributaries to the vein of the vestibular aqueduct

    DEFF Research Database (Denmark)

    Hansen, Jesper Marsner; Qvortrup, Klaus; Friis, Morten

    2010-01-01

    CONCLUSION: The vein of the vestibular aqueduct drains blood from areas extensively lined by vestibular dark cells (VDCs). A possible involvement in the pathogenesis of an impaired endolymphatic homeostasis can be envisioned at the level of the dark cells area. OBJECTIVES: The aim of this study...... was to investigate the vascular relationship between the vein of the vestibular aqueduct and the vestibular apparatus, with focus on the VDCs. METHODS: Sixteen male Wistar rats were divided into groups of 6 and 10. In the first group, 2 µm thick sections including the vein of the vestibular aqueduct, utricle......, and crista ampullaris of the lateral ampulla were examined by light microscopy and computer-generated three-dimensional imaging. In the second group, ultrathin sections including venules and VDCs were examined by transmission electron microscopy. RESULTS: A microvascular network was observed in close...

  12. Unilateral pulmonary vein atresia: A rare case of hemoptysis

    Directory of Open Access Journals (Sweden)

    Cindy S. DeMastes-Crabtree

    2015-01-01

    Full Text Available We present a rare case of hemoptysis secondary to isolated unilateral pulmonary vein atresia. Isolated pulmonary vein atresia is a rare condition in which patients typically acquire a diagnosis in infancy and early childhood [Mataciunas et al.; Pourmoghadam et al.]. Our patient presented during puberty with several previous episodes of hemoptysis prior to her admission and diagnosis. The initial diagnosis was suspected in our patient from chest computerized tomography (CT, and confirmed with cardiac catheterization and pulmonary angiography. Treatment aim is to preserve lung function and minimize irreversible pulmonary remodeling [Pourmoghadam et al.; Harrison et al.]. Conservative monitoring can be considered with milder or asymptomatic cases, while others may require preoperative collateral artery banding, surgical anastomosis between the pulmonary vein (PV & left atrium (LA and even pneumonectomy [Pourmoghadam et al.].

  13. Acute portal vein thrombosis due to chronic relapsing pancreatitis: a fistula between a pancreatic pseudocyst and the splenic vein.

    Science.gov (United States)

    Kikuchi, Masahiro; Nishizaki, Yasuhiro; Tsuruya, Kota; Hamada, Ikuko; Higashi, Toru; Sakuma, Keiko; Shiozawa, Hirokazu; Aoki, Jun; Nagashima, Rena; Koizumi, Jun; Arase, Yoshitaka; Shiraishi, Koichi; Matsushima, Masashi; Mine, Tetsuya

    2014-02-01

    Portal vein thrombosis (PVT) is a relatively common complication in patients with liver cirrhosis, but several other causes might play an important role in PVT pathogenesis. We present a case of alcoholic chronic pancreatitis complicated by acute extensive PVT. The patient was managed conservatively with danaparoid sodium at first, but the thrombosis gradually extended. We then tried radiological intervention using the direct transhepatic and transjugular intrahepatic postsystemic shunt approaches. Although we were able to successfully catheterize the percutaneous transhepatic portal vein (PTP), we could not achieve recanalization of the portal vein. Therefore, PTP catheterization and systemic intravenous infusion of urokinase and heparin was performed to prevent further progression of the thrombosis and cavernous transformation was finally achieved. Computed tomography (CT) and magnetic resonance cholangiopancreatography revealed a pancreatic stone which had possibly induced dilatation of the tail duct and formation of a pancreatic pseudocyst and caused intractable pancreatitis. We performed endoscopic retrograde cholangiopancreatography and placed a stent in the pancreatic duct, which completely cured the pancreatitis. Retrospectively, the previous CT with curved multi-planar reconstruction was reviewed and a fistula was detected between the pancreatic pseudocyst and splenic vein. We concluded that the etiology of the PVT was not only inflammatory extension from pancreatitis but also a fistula between the pancreatic duct and the splenic vein.

  14. Rational classification of portal vein thrombosis and its clinical significance.

    Directory of Open Access Journals (Sweden)

    Jingqin Ma

    Full Text Available Portal vein thrombosis (PVT is commonly classified into acute (symptom duration <60 days and absence of portal carvernoma and portal hypertension and chronic types. However, the rationality of this classification has received little attention. In this study, 60 patients (40 men and 20 women with PVT were examined using contrast-enhanced computed tomography (CT. The percentage of vein occlusion, including portal vein (PV and superior mesenteric vein (SMV, was measured on CT image. Of 60 patients, 17 (28.3% met the criterion of acute PVT. Symptoms occurred more frequently in patients with superior mesenteric vein thrombosis (SMVT compared to those without SMVT (p<0.001. However, there was no significant difference in PV occlusion between patients with and without symptoms. The frequency of cavernous transformation was significantly higher in patients with complete PVT than those with partial PVT (p<0.001. Complications of portal hypertension were significantly associated with cirrhosis (p<0.001 rather than with the severity of PVT and presence of cavernoma. These results suggest that the severity of PVT is only associated with the formation of portal cavernoma but unrelated to the onset of symptoms and the development of portal hypertension. We classified PVT into complete and partial types, and each was subclassified into with and without portal cavernoma. In conclusion, neither symptom duration nor cavernous transformation can clearly distinguish between acute and chronic PVT. The new classification system can determine the pathological alterations of PVT, patency of portal vein and outcome of treatment in a longitudinal study.

  15. Automatic classification of retinal vessels into arteries and veins

    Science.gov (United States)

    Niemeijer, Meindert; van Ginneken, Bram; Abràmoff, Michael D.

    2009-02-01

    Separating the retinal vascular tree into arteries and veins is important for quantifying vessel changes that preferentially affect either the veins or the arteries. For example the ratio of arterial to venous diameter, the retinal a/v ratio, is well established to be predictive of stroke and other cardiovascular events in adults, as well as the staging of retinopathy of prematurity in premature infants. This work presents a supervised, automatic method that can determine whether a vessel is an artery or a vein based on intensity and derivative information. After thinning of the vessel segmentation, vessel crossing and bifurcation points are removed leaving a set of vessel segments containing centerline pixels. A set of features is extracted from each centerline pixel and using these each is assigned a soft label indicating the likelihood that it is part of a vein. As all centerline pixels in a connected segment should be the same type we average the soft labels and assign this average label to each centerline pixel in the segment. We train and test the algorithm using the data (40 color fundus photographs) from the DRIVE database1 with an enhanced reference standard. In the enhanced reference standard a fellowship trained retinal specialist (MDA) labeled all vessels for which it was possible to visually determine whether it was a vein or an artery. After applying the proposed method to the 20 images of the DRIVE test set we obtained an area under the receiver operator characteristic (ROC) curve of 0.88 for correctly assigning centerline pixels to either the vein or artery classes.

  16. [A technique for the vein extraction from the susceptibility weighted imaging of the brain].

    Science.gov (United States)

    Suo, Shi; Dou, Feifei; Wang, Cheng; Xu, Jianrong; Huang, Xin; Qian, Lijun; Xu, Xiu

    2011-03-01

    This paper studies the vein extraction technique based on the susceptibility weighted imaging (SWI) and introduced an improved self-adaptive threshold method based on the vessel enhancing diffusion. The approach employs the combination indicator of the local gray character, the global gray character and the tubular information of the vein. It first applies the vessel enhancing diffusion filter to enhance the continuity of the vein, increases the detection rate of tiny vein and suppresses the nucleus areas. And then it uses the improved self-adaptive threshold method to extract the vein. The results demonstrate that this approach can solve the problem above and extract the vein from the SWI image accurately.

  17. Aneurysm of the common iliac vein mimicking a pelvic mass

    Energy Technology Data Exchange (ETDEWEB)

    Yoon, Eun Joo; Kim, Dong Hun [Dept. of Radiology, Chosun University College of Medicine, Gwangju (Korea, Republic of); Suk, Eun Ha [Dept. of Anesthesiology and Pain Medicine, Seonam University College of Medicine, Namwon (Korea, Republic of)

    2013-07-15

    Venous aneurysm, especially of primary origin, is rare. The authors report a case of a 63-year-old female who was admitted for back pain and an aneurysm of the common iliac which was detected incidentally. CT, magnetic resonance (MR), Doppler ultrasonography, and conventional venography showed an aneurysm of the left common iliac vein measuring 4.5 , 00D7, 3, 00D7, 4 cm. Because there were no complications of the aneurysm, no further treatment was administered. Herein, we describe findings of a venous aneurysm of the common iliac vein mimicking a pelvic mass on CT and MR scans and with a review of the literature.

  18. Surgical Management of Ectopic Kidney with Bilateral Iliac Vein Invasion.

    Science.gov (United States)

    Tanwar, Harshwardhan V; Wagaskar, Vinayak G; Fernandes, Gwendolyn; Patil, Bhushan; Patwardhan, Sujata K

    2016-03-01

    Renal cell carcinoma (RCC) is a very rare phenomenon in an ectopic kidney. We come across a 61-year-old gentleman with a history of 2 months of gross, painless haematuria and palpable pelvic mass on examination. CT scan showed 6.5cm X 5.1cm X 5.8cm mass in pelvic kidney with bilateral iliac vein invasion. With the help of intra-operative ultra-sound, tumour thrombus was extracted from both iliac veins with en mass removal of tumour. Patient was well intraoperatively as well as in postoperatively. We also presented an elegant imaging for the case.

  19. Management of Deep Vein Thrombosis (DVT) Prophylaxis in Trauma Patients.

    Science.gov (United States)

    Paydar, Shahram; Sabetian, Golnar; Khalili, Hosseinali; Fallahi, Javad; Tahami, Mohammad; Ziaian, Bizhan; Abbasi, Hamid Reza; Bolandparvaz, Shahram; Ghaffarpasand, Fariborz; Ghahramani, Zahra

    2016-01-01

    Deep vein thrombosis (DVT) and pulmonary embolism (PTE) are known as venous thromboembolism (VTE). DVT occurs when a thrombus (a blood clot) forms in deep veins of the body, usually in the lower extremities. It can cause swelling or leg pain, but sometimes may occur with no symptoms. Awareness of DVT is the best way to prevent the VTE. Patients with trauma are at increased risk of DVT and subsequent PE because of coagulopathy in patients with multiple trauma, DVT prophylaxis is essential but the VTE prophylaxis strategy is controversial for the trauma patients. The risk factors for VTE includes pelvic and lower extremity fractures, and head injury.

  20. [Physiopathology of macular edema in central vein occlusion].

    Science.gov (United States)

    Stanca, Horia T; Manea, Georgiana

    2012-01-01

    Retinal Vein Occlusions are vascular diseases affecting the Central Retinal Vein and its branches causing decreased retinal drainage resulting in significant clinical and functional pathological changes. RVO determines the increase of vascular permeability, with edema and hemorrhage and development of collateral vessels in a few weeks. Among the serious consequences of venous occlusion is the installation of macular edema to which depends long-term visual prognosis. Macular Edema is the accumulation of intraretinal serous fluid in the macular area caused by the breakdown of blood-retinal barrier.

  1. Isolation and culture of human umbilical vein endothelial cells (HUVEC).

    Science.gov (United States)

    Cheung, Ambrose L

    2007-02-01

    Human-derived endothelial cells can now be routinely harvested from human umbilical veins. Studies with human umbilical vein endothelial cells (HUVEC) have been conducted with cells from passage 2 to 5. It is now also possible to cryopreserve primary and early-passaged HUVEC for future propagation and for forwarding to an end user by express courier. Stored HUVEC have been stably retrieved even after several years. These retrieval techniques have facilitated the deployment of HUVEC for many studies, including those for homeostasis, inflammatory disorders, atherosclerosis, cancer, and microbial adhesion and invasion. In this unit, we will delineate the procedure for harvesting, propagation, and storage of HUVEC.

  2. Mortality in patients with central retinal vein occlusion

    DEFF Research Database (Denmark)

    Bertelsen, Mette; Linneberg, Allan; Christoffersen, Nynne;

    2014-01-01

    PURPOSE: To assess mortality in patients with central retinal vein occlusion (CRVO). DESIGN: Registry-based cohort study. PARTICIPANTS AND CONTROLS: Four hundred thirty-nine photographically verified CRVO patients and a control cohort of 2195 unexposed subjects matched by age and gender and alive.......03-1.56) and in women 60 to 69 years of age (SMR, 1.94; 95% CI, 1.22-3.08). CONCLUSIONS: Central retinal vein occlusion was associated with an overall increase in mortality compared with controls that was attributed statistically to cardiovascular disorders and diabetes. We recommend treatment of hypertension...

  3. MANAGEMENT OF DEEP VEIN THROMBOSIS AT PAEDIATRIC POPULATION

    Directory of Open Access Journals (Sweden)

    Alina-Costina LUCA

    2016-06-01

    Full Text Available Deep vein thrombosis (DVT was considered a rare condition in the pediatric population, more recent data show a significant increase in incidence. DVT occurs due to an imbalance of hemeostasis. There are incriminated multiple risk factors, of which the most common is the central venous catheter. Imaging evaluation plays a crucial role in early diagnosis of the disease. Anticoagulant therapy is the first line of treatment, adapted existing protocols for adults. This article addresses the assessment and treatment of pediatric patients with deep vein thrombosis.

  4. Finger Vein Recognition Using Local Line Binary Pattern

    Directory of Open Access Journals (Sweden)

    Bakhtiar Affendi Rosdi

    2011-11-01

    Full Text Available In this paper, a personal verification method using finger vein is presented. Finger vein can be considered more secured compared to other hands based biometric traits such as fingerprint and palm print because the features are inside the human body. In the proposed method, a new texture descriptor called local line binary pattern (LLBP is utilized as feature extraction technique. The neighbourhood shape in LLBP is a straight line, unlike in local binary pattern (LBP which is a square shape. Experimental results show that the proposed method using LLBP has better performance than the previous methods using LBP and local derivative pattern (LDP.

  5. Changes in the retinal veins in acute optic neuritis

    DEFF Research Database (Denmark)

    Engell, T; Sellebjerg, F; Jensen, C

    1999-01-01

    OBJECTIVE: To investigate patients with acute optic neuritis (ON) for changes of the retinal veins. MATERIAL AND METHODS: Seventy-six patients with acute ON were extensively neuro-ophthalmologically examined. RESULTS: Multiple sclerosis (MS) was found in 41 patients of whom 1 had periphlebitis...... retinae (PR) and 2 had venous sheathing (VS). Probable MS was found in 15 patients without prior symptoms of MS. One had PR and VS, and 2 had VS. Twenty patients had mono-symptomatic ON, none had retinal changes. CONCLUSION: Changes of the retinal veins should alert the clinician to a probable diagnosis...

  6. Chylous ascites caused by acute pancreatitis with portal vein thrombosis.

    Science.gov (United States)

    Park, Dong Eun; Chae, Kwon Mook

    2011-12-01

    Chylous ascites is defined as the accumulation of chyle in the peritoneum due to obstruction or rupture of the peritoneal or retroperitoneal lymphatic glands. Chylous ascites that arises from acute pancreatitis with portal vein thrombosis is very rare. We report here on a case of chylous ascite that was caused by acute pancreatitis with portal vein thrombosis, in which the patient showed an impressive response to conservative therapy with total parenteral nutrition and octerotide. We also review the relevant literature about chylous ascites with particular reference to the management of this rare disease.

  7. Isolated Facial Vein Thrombophlebitis: A Variant of Lemierre Syndrome

    DEFF Research Database (Denmark)

    Karnov, Kirstine KS; Lilja-Fischer, Jacob Kinggaard; Randrup, Thomas Skov

    2014-01-01

    Lemierre syndrome is a rare complication of acute tonsillitis. It is caused by the anaerobic bacterium Fu- sobacterium necrophorum and is characterized by bacteremia and septic thrombosis of the internal jug- ular vein. Dissemination of septic emboli may occur. The diagnosis can be difficult since...... different organs can be involved. We discuss a case of Lemierre syn- drome in a 35-year-old woman with isolated throm- bophlebitis of the facial vein and fusobacteria growth in blood culture. This case emphasizes the need for awareness of the condition....

  8. Maintenance of atrial fibrillation by pulmonary vein tachycardia with ostial conduction block: evidence of an interpulmonary vein electrical connection.

    Science.gov (United States)

    Matsuo, Seiichiro; Jaïs, Pierre; Wright, Matthew; Lim, Kang-Teng; Knecht, Sébastien; Haïssaguerre, Michel

    2008-10-01

    We report a case of a 56-year-old man with paroxysmal atrial fibrillation who underwent segmental, ostial pulmonary vein (PV) isolation while in arrhythmia. During isolation of the left superior PV (LSPV), organized electrical activity was seen within the vein, suggestive of a PV tachycardia with a cycle length of 90 ms. Simultaneously, organized electrical activity with a cycle length of 180 ms was seen in the left inferior PV (LIPV), suggestive of 2:1 conduction between the LSPV and the LIPV. Isolation of the LIPV resulted in conversion to sinus rhythm, while confirming isolation of the LSPV by the presence of ongoing PV tachycardia in this vein. This case demonstrates a direct electrical connection between the ipsilateral left PVs, leading to maintenance of atrial fibrillation.

  9. The risk of varicose veins in standing female workers

    Directory of Open Access Journals (Sweden)

    Tony Hidayat

    2013-07-01

    Full Text Available AbstrakLatar belakang:Varises sering terjadi pada karyawan yang harus bekerja dalam posisi kerja berdiri. Tujuan penelitian ini untuk mengetahui beberapa faktor risiko terhadap varises tungkai dan atau kaki di antara pekerja perempuan. Metode:Penelitian potong lintang ini dilakukan pada Januari-Maret 2010. Sampel penelitian yang dipilih secara purposif yang memenuhi kriteria inklusi penelitian di antara pekerja perempuan perlu bekerja dalam  posisi  kerja  berdiri.  Data  dikumpulkan  dengan  wawancara,  pemeriksaan  fisik  dan  observasi posisi kerja berdiri. Pengolahan data untuk menentukan faktor dominan terhadap varises menggunakan pendekatan risiko relatif.Hasil:Dari 152 karyawan yang terdapat 111 yang bersedia mengikuti penelitian, dan yang menderita varises tungkai dan atau kaki sebanyak 52,3% (53 orang. Sebagian besar responden berusia 18-35 tahun, memiliki masa kerja 3-17 tahun, bekerja dalam posisi kerja banyak berdiri. Sebagian kecil responden memiliki riwayat varises di dalam keluarga (13,51%, memakai kontrasepsi oral (11,71%, memiliki kebiasaan olah raga (18,02% dan memakai sepatu hak tinggi (11,71%. Faktor umur, pemakaian kontrasepsi oral, pemakaian sepatu hak tinggi, kebiasaan olah raga, posisi kerja berdiri, tempat kerja, dan masa kerja tidak berhubungan dengan varises tungkai dan atau kaki. Karyawan yang mempunyai dibandingkan dengan yang tidak mempunyai riwayat keluarga varises, berisiko 69% lebih tinggi menderita varises [risiko relatif (RR = 1,69; P = 0.121]. Kesimpulan:Karyawan yang mempunyai riwayat keluarga varises berisiko lebih tinggi menderita varises. (Health Science Indones 2013;1:47-50 Kata kunci:varises, posisi kerja berdiriAbstractBackground: Varicose veins often occur in employees who have to work in a position of standing work. The purpose of this study to determine risk factors for varicose veins and leg or foot among women workers.Methods: In this cross-sectional study in January-March 2010 the

  10. How vein sealing boosts fracture widening rates - The buckling-enhanced aperture growth mechanism for syn-tectonic veins

    Science.gov (United States)

    Nüchter, Jens-Alexander

    2017-01-01

    The paper introduces the mechanism of buckling-enhanced aperture growth for syn-tectonic veins that formed in simple-shear dominated kinematic frameworks in the middle or lower crust. Apart from the well understood concepts of fracture widening driven by effective tensile stresses, buckling-enhanced fracture aperture growth relates widening to active outward buckling of more viscous incipient cement layers precipitated as hydrothermal minerals for the pore fluid on the walls of juvenile syn-tectonic veins, driven by fracture-parallel compressive creep strain in the host rocks. Thus, the mechanism proposed here follows similar principles as tectonic folding, although important differences exist. Inspired by the structural record of low-aspect ratio veins exposed in HP/LT metamorphic rocks cropping out on south Evia island, Greece, generic numerical models are calculated to study development of buckling instabilities in such incompletely cemented veins and their impact on aperture growth rates. The models indicate (1) that aperture growth rates increase with increasing viscosity contrast between the host rocks and the cement layers, (2) an increase in the thickness of the cement layers cause acceleration of aperture growth, (3) that support of restraining forces at the vein tips offered by the host rocks against buckling of the cement layers cause fully compressive states of stress ahead the fracture tips, and (4) that fracture aperture growth is possible against fully compressive fracture-normal stresses. The buckling-enhanced vein aperture growth mechanism yields important implications for the maintenance and decay of fracture-bound permeability and for the mechanical state of the middle and lower crust in seismically active regions.

  11. The Distant Morphological and Petrological Features of Shock Melt Veins in the Suizhou L6 Condrite

    Energy Technology Data Exchange (ETDEWEB)

    X Xie; Z Sun; M Chen

    2011-12-31

    The morphology and petrology of distinct melt veins in the Suizhou L6 chondrite have been investigated using scanning electron microscopy, electron microprobe analyses, and Raman spectroscopy, synchrotron energy-dispersive diffraction, and transmission electron microscopy. It is found that the melt veins in the Suizhou meteorite morphologically are the simplest, straightest, and thinnest among all shock veins known from meteorites. At first glance, these veins look like fine fractures, but petrologically they are solid melt veins of chondritic composition and consist of fully crystalline materials of two distinct lithological assemblages, with no glassy material remaining. The Suizhou melt veins contain the most abundant high-pressure mineral species when compared with all other veins known in chondrites. Thus, these veins in Suizhou are classified as shock veins. All rock-forming and almost all accessory minerals in the Suizhou shock veins have been transformed to their high-pressure polymorphs, and no fragments of the precursor minerals remain in the veins. Among the 11 high-pressure mineral phases identified in the Suizhou veins, three are new high-pressure minerals, namely, tuite after whitlockite, xieite, and the CF phase after chromite. On the basis of transformation of plagioclase into maskelynite, it is estimated that the Suizhou meteorite experienced shock pressures and shock temperatures up to 22 GPa and 1000 C, respectively. Shearing and friction along shock veins raised the temperature up to 1900-2000 C and the pressure up to 24 GPa within the veins. Hence, phase transition and crystallization of high-pressure minerals took place only in the Suizhou shock veins. Fast cooling of the extremely thin shock veins is regarded as the main reason that up to 11 shock-induced high-pressure mineral phases could be preserved in these veins.

  12. The Incidence of Giacomini Vein and Its Association with Lower Extremity venous Insufficiency: An Ultrasonographic Study

    Energy Technology Data Exchange (ETDEWEB)

    Park, Soon Chan; Kwon, Se Hwan; Oh, Joo Hyeong; Ryu, Kyung Nam; Ahn, Hyung Joon; Park, Ho Chul [Kyunghee University Medical Center, Seoul (Korea, Republic of)

    2009-09-15

    We wanted to evaluate the incidence of Giacomini vein and its association with lower extremity venous insufficiency by performing US. From September 2006 to July 2007, 173 patients (58 males and 115 females, mean age: 52.7 years, age range: 22-72 years) who had been diagnosed with unilateral/bilateral varicose veins or telangiectasias were evaluated with duplex Doppler ultrasonography. The presence of Giacomini vein, superficial/deep vein reflux, the anatomical sites of the venous reflux and the abnormal perforating veins was investigated in 346 legs. Giacomini veins were found in 33 limbs (9.5%) of 21 patients (12.1%). Bilateral Giacomini veins were found in 12 patients. Of the 33 limbs that had Giacomini veins, 20 limbs had great saphenous vein (GSV) reflux and 4 limbs had small saphenous vein (SSV) reflux. The patients with Giacomini veins were classified into two groups according to the presence of Giacomini vein. There was no significant difference of the GSV reflux (p = 0.155), the SSV reflux (p = 0.760) and the mean velocity of the GSV reflux or the SSV reflux (p = 0.685, p = 0.431, respectively) between the two groups. Our results indicated that Giacomini vein is not associated with either GSV or SSV reflux, and this is contrary to conventional belief

  13. Renal vein oxygen saturation in renal artery stenosis

    DEFF Research Database (Denmark)

    Nielsen, K; Rehling, M; Henriksen, Jens Henrik Sahl

    1992-01-01

    Renal vein oxygen-saturation was measured in 56 patients with arterial hypertension and unilateral stenosis or occlusion of the renal artery. Oxygen-saturation in blood from the ischaemic kidney (84.4%, range 73-93%) was significantly higher than that from the 'normal' contralateral kidney (81...

  14. Velocity Estimation of the Main Portal Vein with Transverse Oscillation

    DEFF Research Database (Denmark)

    Brandt, Andreas Hjelm; Hansen, Kristoffer Lindskov; Nielsen, Michael Bachmann

    2015-01-01

    This study evaluates if Transverse Oscillation (TO) can provide reliable and accurate peak velocity estimates of blood flow the main portal vein. TO was evaluated against the recommended and most widely used technique for portal flow estimation, Spectral Doppler Ultrasound (SDU). The main portal...

  15. Prospective screening for deep vein thrombosis in high risk patients.

    Science.gov (United States)

    Barnes, R W

    1977-08-01

    In 257 patients undergoing total hip replacement, gastric bypass for morbid obesity, major abdominal surgery, and major leg amputation, Doppler ultrasonic screening revealed only five instances of deep vein thrombosis. The present study suggests that Doppler screening of high risk patients is a useful alternative to routine anticoagulant prophylaxis of venous thromboembolic disease.

  16. Deep vein thrombosis in primary care : possible malignancy?

    NARCIS (Netherlands)

    Oudega, Ruud; Moons, Karel G. M.; Nieuwenhuis, H. Karel; van Nierop, Fred L.; Hoes, Arno W.

    2006-01-01

    Background The increased prevalence of unrecognised malignancy in patients with deep vein thrombosis (DVT) has been well established in secondary care settings. However, data from primary care settings, needed to tailor the diagnostic workup, are lacking. Aim To quantify the prevalence of unrecognis

  17. Evaluation of Azygous Vein Aneurysm Using Integrated PET/MRI

    Energy Technology Data Exchange (ETDEWEB)

    Seo, Hyo Jung; Kang, Keon Wook; Lee, Dong Soo; Goo, Jin Mo; Kim, Young Tae; Park, Young Sik; Cheon, Gi Jeong [Seoul National Univ. College of Medicine, Seoul (Korea, Republic of)

    2014-06-15

    A previously healthy, non-smoking, 72-year-old woman was referred to our hospital with abnormal chest X-ray and chest discomfort. A 3.5-cm, well-defined, right paratracheal mass was revealed on non-contrast chest computed tomography (CT), which was suspected to be an azygous vein aneurysm, lymph adenopathy or neurogenic tumor. Whole-body integrated positron emission tomography/magnetic resonance imaging (PET/MRI) (Biograph mMR; Siemens Healthcare, Erlangen, Germany) was performed for the differential diagnosis. A homogenously enhancing mass connected with the azygous vein was well visualized in a post-contrast volumetric interpolated gradient echo (VIBE) sequence. Additionally, the PET showed minimal {sup 18}F-fluorodeoxyglucose (FDG) uptake (maximum standardized uptake value [SUVmax], 1.83), similar to that of the great vessels, with no filling defect to suggest thromboembolism and no significant FDG uptake to suggest active thrombo-embolism or malignancy. The imaging findings in integrated PET/MRI were useful to characterize azygous vein aneurysm. The patient had a video-assisted thoracoscopic surgery to relieve the symptom of chest pain. A congenital etiology of azygous vein aneurysm was confirmed by pathology.

  18. Subclavian Vein Cannulation Success Rate in Neonates and Children

    Science.gov (United States)

    Aminnejad, Reza; Razavi, Seyed Sajjad; Mohajerani, Seyed Amir; Mahdavi, Seyed Alireza

    2015-01-01

    Background: Central vein cannulation allows the administration of large volumes of fluids in short times and at high osmolarities for rehydration, volume replacement, chemotherapy, and parenteral nutrition. Percutaneous central venous line insertion has replaced peripheral venous cut-down as the primary mode of short-term venous access in children. Objectives: The aim of our study was to delineate some aspects of this procedure as well as its success rate and relative risk in pediatrics. Patients and Methods: Totally, 3264 subclavian vein cannulations in neonates and children were analyzed regarding successful catheterization attempts and early complication rates after the procedure retrospectively in Mofid Hospital (Tehran, Iran). Results: There were 1340 newborn patients (first 28 days of life) in our study population. In these newborns, only 55 cannulations failed; one patient was complicated with pneumothorax; guide wires malfunctioned in 21 cases; and first- attempt cannulation success was reported in only 981 cases. In the remaining 1924 patients, between one month and 8 years old, only 14 attempts at the cannulation of the subclavian vein failed and 1655 cases had first-attempt cannulation success. Conclusions: The cannulation of the central vein in neonates and children in a skilled hand would be performed with great success rate and low complications. PMID:26161322

  19. Comorbidity in patients with branch retinal vein occlusion

    DEFF Research Database (Denmark)

    Bertelsen, Mette; Linneberg, Allan René; Rosenberg, Niels Thomas;

    2012-01-01

    To evaluate comorbidity before and after the diagnosis of branch retinal vein occlusion to determine whether it is a consequence of arterial thickening and therefore could serve as a diagnostic marker for other comorbidities and to evaluate the risk factors for the development of such occlusion....

  20. Central retinal vein occlusion: A patient with systemic sclerosis

    Directory of Open Access Journals (Sweden)

    Karadžić Jelena

    2016-01-01

    Full Text Available Introduction. Scleroderma (systemic sclerosis is a severe chronic connective tissue disease, which results in involvement of numerous internal organs. Changes in the eye are the consequences of organ-specific manifestations of scleroderma or adverse effects of immunosuppressive treatment applied. Case report. We reported a 42-year-old woman with systemic sclerosis and acute deterioration of vision in the left eye, with visual acuity 0.9. After thorough clinical examination, including fluorescein angiography and optical coherence tomography, the diagnosis of nonischemic central retinal vein occlusion was made. Further biochemical, rheumatological and immunological investigation, apart from inactive systemic sclerosis, showed normal findings. Therefore, the cause of central retinal vein occlusion could only be attributed to the microvascular changes in systemic sclerosis. After three months, visual acuity deteriorated to 0.6 due to the development of cystoid macular edema. The patient received intravitreal injection of bevacizumab and after a single dose visual acuity improved to 0.9. After a 6- month follow-up, macular edema resolved and visual acuity stabilized. Conclusion. According to our knowledge and current data from the literature, central retinal vein occlusion is a rare vision threatening manifestation of scleroderma. There are only few published case reports on central vein occlusion in scleroderma patients. Examination of the ocular fundus is recommended for evaluation of vascular disease in patients with systemic sclerosis.

  1. SPLANCHNIC VEIN THROMBOSIS IN THE MEDITERRANEAN AREA IN CHILDREN

    Directory of Open Access Journals (Sweden)

    Hanaa El-Karaksy

    2011-07-01

    Full Text Available Abdominal venous thrombosis may present as splanchnic venous thrombosis (SVT (occlusion of portal, splenic, superior or inferior mesenteric veins or Budd- Chiari Syndrome (BCS (thrombosis of inferior vena cava and/or hepatic veins. The aim of this review is to report the scanty data available for splanchnic vein thrombosis in the South Mediterranean area. In one Egyptian study, the possible circumstantial risk factors for portal vein thrombosis were found in 30% of cases:  19% neonatal sepsis, 8.7% umbilical catheterization, 6% severe gastroenteritis and dehydration. Another Egyptian study concluded that hereditary thrombophilia was common in children with PVT (62.5%, the commonest being factor V Leiden mutation (FVL (30%. Concurrence of more than one hereditary thrombophilia was not uncommon (12.5%. The first international publication on hepatic veno-occlusive disease (VOD in Egypt was in 1965 in children who rapidly develop abdominal distention with ascites and hepatomegaly. This disease was more frequent in malnourished children coming from rural areas; infusions given at home may contain noxious substances that were hepatotoxic and Infections might play a role. VOD of childhood is rarely seen nowadays. Data from South Mediterranean area are deficient and this may be attributable to reporting in local medical journals that are difficult to access. Medical societies concerned with this topic could help distribute this information.

  2. Blood pooling in extrathoracic veins after glossopharyngeal insufflation

    DEFF Research Database (Denmark)

    Mijacika, Tanja; Frestad, Daria; Kyhl, Kasper

    2017-01-01

    PURPOSE: Trained breath-hold divers hyperinflate their lungs by glossopharyngeal insufflation (GPI) to prolong submersion time and withstand lung collapse at depths. Pulmonary hyperinflation leads to profound hemodynamic changes. METHODS: Thirteen divers performed preparatory breath-holds followed...... divers in a sub-study. RESULTS: After GPI, pulmonary volume increased by 0.8 ± 0.6 L above total lung capacity. The diameter of the superior caval (by 36 ± 17%) and intrathoracic part of the inferior caval vein decreased (by 21 ± 16%), while the diameters of the internal jugular (by 53 ± 34%), hepatic...... (by 28 ± 40%), abdominal part of the inferior caval (by 28 ± 28%), and femoral veins (by 65 ± 50%) all increased (P Blood volume of the internal jugular, the hepatic, the abdominal part of the inferior caval vein, and the combined common iliac and femoral veins increased by 145 ± 115, 80 ± 88...

  3. INVOLVEMENT OF THE INFERIOR CAVAL VEIN IN ADRENAL METASTASIS

    NARCIS (Netherlands)

    VANDALEN, KC; VANDRIEL, MF; MENSINK, HJA

    1992-01-01

    A patient was referred to our hospital for resection of a large renal cell carcinoma with invasion of the inferior caval vein, diagnosed as such with CT, angiography and cavography. The history mentioned partial resection of the left lung for lung carcinoma 16 months before. At operation the tumor c

  4. Saphenous Vein Sparing Superficial Inguinal Dissection in Lower Extremity Melanoma

    Directory of Open Access Journals (Sweden)

    Muhammed Beşir Öztürk

    2014-01-01

    Full Text Available Aim. The classic inguinal lymph node dissection is the main step for the regional control of the lower extremity melanoma, but this surgical procedure is associated with significant postoperative morbidity. The permanent lymphedema is the most devastating long-term complication leading to a significant decrease in the patient’s quality of life. In this study we present our experience with modified, saphenous vein sparing, inguinal lymph node dissections for patients with melanoma of the lower extremity. Methods. Twenty one patients (10 women, 11 men who underwent saphenous vein sparing superficial inguinal lymph node dissection for the melanoma of lower extremity were included in this study. The effects of saphenous vein sparing on postoperative complications were evaluated. Results. We have observed the decreased rate of long-term lymphedema in patients undergoing inguinal lymphadenectomy for the lower extremity melanoma. Conclusion. The inguinal lymphadenectomy with saphenous vein preservation in lower extremity melanoma patients seems to be an oncologically safe procedure and it may offer reduced long-term morbidity.

  5. Pathogenetics of alveolar capillary dysplasia with misalignment of pulmonary veins

    NARCIS (Netherlands)

    Szafranski, P.; Gambin, T.; Dharmadhikari, A.V.; Akdemir, K.C.; Jhangiani, S.N.; Schuette, J.; Godiwala, N.; Yatsenko, S.A.; Sebastian, J.; Madan-Khetarpal, S.; Surti, U.; Abellar, R.G.; Bateman, D.A.; Wilson, A.L.; Markham, M.H.; Slamon, J.; Santos-Simarro, F.; Palomares, M.; Nevado, J.; Lapunzina, P.; Chung, B.H.; Wong, W.L.; Chu, Y.W.; Mok, G.T.; Kerem, E.; Reiter, J.; Ambalavanan, N.; Anderson, S.A.; Kelly, D.R.; Shieh, J.; Rosenthal, T.C.; Scheible, K.; Steiner, L.; Iqbal, M.A.; McKinnon, M.L.; Hamilton, S.J.; Schlade-Bartusiak, K.; English, D.; Hendson, G.; Roeder, E.R.; DeNapoli, T.S.; Littlejohn, R.O.; Wolff, D.J.; Wagner, C.L.; Yeung, A.; Francis, D.; Fiorino, E.K.; Edelman, M.; Fox, J.; Hayes, D.A.; Janssens, S.; Baere, E. De; Menten, B.; Loccufier, A.; Vanwalleghem, L.; Moerman, P.; Sznajer, Y.; Lay, A.S.; Kussmann, J.L.; Chawla, J.; Payton, D.J.; Phillips, G.E.; Brosens, E.; Tibboel, D.; Klein, A.; Maystadt, I.; Fisher, R.; Sebire, N.; Male, A.; Chopra, M.; Pinner, J.; Malcolm, G.; Peters, G.; Arbuckle, S.; Lees, M.; Mead, Z.; Quarrell, O.; Sayers, R.; Owens, M.; Shaw-Smith, C.; Lioy, J.; McKay, E.; Leeuw, N. de; Feenstra, I.; Spruijt, L.; Elmslie, F.; Thiruchelvam, T.; Bacino, C.A.; Langston, C.; Lupski, J.R.; Sen, P.; Popek, E.; Stankiewicz, P.

    2016-01-01

    Alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV) is a lethal lung developmental disorder caused by heterozygous point mutations or genomic deletion copy-number variants (CNVs) of FOXF1 or its upstream enhancer involving fetal lung-expressed long noncoding RNA genes LINC0108

  6. Systemic abnormalities associated with retinal vein occlusion in young patients

    Science.gov (United States)

    Sinawat, Suthasinee; Bunyavee, Chavisa; Ratanapakorn, Tanapat; Sinawat, Supat; Laovirojjanakul, Wipada; Yospaiboon, Yosanan

    2017-01-01

    Objectives To study the systemic abnormalities associated with retinal vein occlusion in patients aged ≤50 years with a particular emphasis on atherosclerotic diseases and thrombophilic disorders. Methods Medical charts of patients, aged ≤50 years whose diagnoses were retinal vein occlusions during the period 1995–2015 were retrospectively reviewed. The primary outcome was the number of systemic abnormalities associated with these patients. Secondary outcomes included types of retinal vein occlusion and sites of occlusion. Results Atherosclerotic diseases were the most common systemic abnormalities associated with retinal vein occlusion and accounted for 55.1% of the patients in the study. Hypertension in 27.55%, diabetes mellitus in 16.33%, and 5.1% with dyslipidemia were noted. The number of thrombophilic disorders seemed to be less than expected and were noted in only 5.1%. Other systemic abnormalities included viral hepatitis infection, systemic lupus erythematosus, and acquired immunodeficiency syndrome. Oral contraceptives were used by some patients. Conclusion Atherosclerotic diseases remained the most commonly associated systemic diseases in the majority of these patients. Approach to these patients should include a screening for hypertension, diabetes mellitus, and lipid abnormalities. Thrombophilia should also be considered where no obvious atherosclerotic diseases are found or if the patient is <40 years old, a history of thrombosis or a family history of thrombosis is possible. PMID:28260858

  7. Absence of the superior petrosal veins and sinus: Surgical considerations

    Directory of Open Access Journals (Sweden)

    Ken Matsushima

    2015-01-01

    Conclusions: In cases in which the superior petrosal sinus and veins are absent, care should be directed to preserving the collateral drainage through the galenic and tentorial tributaries. Although surgical strategies for intraoperative management and preservation of venous structures are still controversial, knowledge of the possible anatomical variations is considered to be essential to improve surgical outcomes.

  8. Abernethy malformation with portal vein aneurysm in a child

    OpenAIRE

    Sheragaru H Chandrashekhara; Ashu Seith Bhalla; Arun Kumar Gupta; Vikash, C. S.; Susheel Kumar Kabra

    2011-01-01

    Abernethy malformation is an extremely rare anomaly of the splanchnic venous system. We describe multidetector computed tomography findings of an incidentally detected Abernethy malformation with portal vein aneurysm in a two-and-half-year old child. The computed tomography scan was performed for the evaluation of respiratory distress, poor growth, and loss of appetite.

  9. Subfascial endoscopic ligation in the treatment of incompetent perforating veins

    NARCIS (Netherlands)

    E.G.J.M. Pierik; C.H. Wittens; H. van Urk (Hero)

    1995-01-01

    textabstractObjectives: To assess the technique of subfascial endoscopic ligation of incompetent perforatory veins by use of a mediastinoscope. Design: Prospective open clinic study. Setting: Two Departments of Surgery. Materials and Methods: Thirty-eight consecutive patients (40 legs) with recu

  10. Abernethy malformation with portal vein aneurysm in a child

    Directory of Open Access Journals (Sweden)

    Sheragaru H Chandrashekhara

    2011-01-01

    Full Text Available Abernethy malformation is an extremely rare anomaly of the splanchnic venous system. We describe multidetector computed tomography findings of an incidentally detected Abernethy malformation with portal vein aneurysm in a two-and-half-year old child. The computed tomography scan was performed for the evaluation of respiratory distress, poor growth, and loss of appetite.

  11. Arteries masquerading as varicose veins: A trap for phlebologists.

    Science.gov (United States)

    Jones, L; Parsi, K

    2015-12-01

    Ultrasound guided sclerotherapy may be complicated by intra-arterial injections resulting in significant tissue necrosis. Here, we present a 69-year-old man with a history of right small saphenous vein "stripping", presenting for the treatment of symptomatic lower limb varicose veins. Duplex ultrasound of the right lower limb outlined the pathway of venous incompetence. Despite the history of "stripping", the small saphenous vein was present but the sapheno-popliteal junction was ligated at the level of the knee crease. No other unusual findings were reported at the time. During ultrasound guided sclerotherapy, subcutaneous vessels of the right posterior calf were noted to be pulsatile on B-mode ultrasound. Treatment was interrupted. Subsequent angiography and sonography showed absence of the right distal popliteal artery. A cluster of subcutaneous vessels of the right medial and posterior calf were found to be arterial collaterals masquerading as varicose veins. Injection sclerotherapy of these vessels would have resulted in significant tissue loss. This case highlights the importance of vigilance at the time of treatment and the invaluable role of ultrasound in guiding endovenous interventions.

  12. Treatment and Quality of Life of Patients with Varicose Veins

    NARCIS (Netherlands)

    A.A.M. Biemans (Anke)

    2013-01-01

    textabstractVaricose veins are common and have a substantial impact on patients’ quality of life. Multiple good treatment options are currently available. In this thesis we describe the indications, procedures, safety, efficacy and recurrence profiles of the most frequently performed treatments for

  13. Velocity Estimation of the Main Portal Vein with Transverse Oscillation

    DEFF Research Database (Denmark)

    Brandt, Andreas Hjelm; Hansen, Kristoffer Lindskov; Nielsen, Michael Bachmann;

    2015-01-01

    This study evaluates if Transverse Oscillation (TO) can provide reliable and accurate peak velocity estimates of blood flow the main portal vein. TO was evaluated against the recommended and most widely used technique for portal flow estimation, Spectral Doppler Ultrasound (SDU). The main portal ...

  14. Temperament profiles of children with vein of Galen malformations.

    Science.gov (United States)

    Nass, R; Melnick, J; Berenstein, A

    1998-08-01

    Unlike many brain injured children who are often rather difficult, toddlers and school-aged children with congenital vein of Galen malformations (n = 20; age range, 4 months to 12 years with a mean of 4 years) evidence a relatively positive temperament profile (based on the Temperament Scales of Carey, McDevitt, Fullard, Hegvik, Medoff-Cooper). They do not, however, differ from normal children with regard to the frequency of easy, difficult, slow to warm up, and intermediate temperament clusters. The temperament profile of children with vein of Galen malformations appears unaffected by additional neurologic abnormalities (hydrocephalus, abnormal developmental quotient, seizure disorder, focal cortical lesions) or other factors including age at testing, sex, or socioeconomic status. Contrary to the findings in adults of right hemisphere dominance for attention, presence of additional right-sided focal cortical pathology was not associated with greater activity level, distractibility, or impersistence. In contrast to the findings in adults and children of right hemisphere dominance for emotions in general, children with vein of Galen malformations and additional right hemisphere cortical damage are not more difficult than those with additional left cortical pathology or no additional focal cortical pathology. The fact that the pathology in vein of Galen malformations is subcortical may explain their relatively easier temperament and the absence of lateralization effects.

  15. Caudal shif ting of hepatic vein anastomosis inright liver living donor liver transplantation

    Institute of Scientific and Technical Information of China (English)

    Sheung Tat Fan

    2008-01-01

    BACKGROUND: In right liver living donor liver trans-plantation, hepatic venous anastomosis is performed using the recipient's right hepatic vein oriifce. There may be situations that the portal vein is short or the right liver graft is small, leading to dififculty in portal vein, hepatic artery or duct-to-duct anastomosis. METHODS: The recipient's right hepatic vein oriifce is closed partially for 2 cm at the cranial end or totally, and a new venotomy is made caudal to the right hepatic vein oriifce. Hepatic vein anastomosis is performed with the new venotomy. RESULTS: The distance between the liver graft hilum and hepatoduodenal ligament is reduced. Portal vein, hepatic artery and biliary anastomosis could be performed without tension or conduit. CONCLUSION: Caudal shifting of hepatic vein anasto-mosis facilitates implantation of a right liver living donor graft.

  16. NSCT-based fusion enhancement for multispectral finger-vein images

    Science.gov (United States)

    Wu, Dongdong; Yang, Jinfeng

    2014-04-01

    Personal identification based on single-spectral finger-vein image has been widely investigated recently. However, in finger-vein imaging, finger-vein image degradation is the main factor causing lower recognition accuracy. So, to improve the finger-vein image quality, in this paper, multispectral finger-vein images (760nm and 850nm) are fused together for contrast enhancement using NSCT transformation. The proposed method can preserve the completeness and sharpness of finger-vein. Experimental results demonstrate that the proposed method is certainly powerful in enhancing finger-vein image contrast and achieves lower equal error rates in finger-vein recognition even if original images have poor contrast.

  17. Classical varicose vein surgery in a diverse ethnic community.

    Science.gov (United States)

    Murli, N L; Navin, I D

    2008-08-01

    Chronic venous disorders range from telangiactasia or spider veins to varicose veins, venous swellings, skin changes and venous ulcerations. The aim of this study is to assess outcome of varicose vein surgery in the ethnically diverse population of Penang, Malaysia. This study is a retrospective analysis of patients seen from 1999 to 2004. All patients who presented to the outpatient clinic of our surgical department with saphenofemoral junction (SFJ) and/or saphenopopliteal junction (SPJ) reflux associated with incompetence of the great saphenous vein (GSV) or small saphenous vein (SSV) respectively underwent classical varicose varicose vein surgery. A single surgeon at a single institution performed the surgeries. Data from pre-operative, post-operative and follow-up procedures were recorded in case report forms. A total of 202 cases were treated. Of these, 200 were qualified by the inclusion criteria and follow-ups, with 23 who were treated bilaterally. Of those treated, Chinese comprised 47.5%, Indians 27.0%, Malays 12.5% and foreigners 13.0% (largely Indonesian Chinese, British and Americans). The average age was 52.1 years. Indians had the highest average BMI of 29.2, compared to the Chinese who had the lowest of 24.6. Based on occupation, housewives (43.0%), blue collar workers (19.0%), salespersons (12.0%) and factory workers (9.5%) were among those afflicted with varicose veins. While local Chinese predominated in the business groups (salespersons and food-related workers), the Indians and Malays in this study were mainly factory workers and/or blue collar workers. Symptomatology in descending order of severity included pain in 80.0% of cases, swelling in 65.5%, heaviness in 53.5%, cramps in 53.0%, lipodermatosclerosis in 39.0%, superficial thrombophlebitis in 33.5%, venous ulceration in 32.0%, eczema 22.0% and cellulitis in 12.5% of patients. Post surgery pains dropped to 9.9%, cramps 6.4%, heaviness 5.5% and swelling 5.3% (p<0.0001 in all groups

  18. Computed tomographic findings in a case of renal vein thrombosis with nephrotic syndrome.

    Science.gov (United States)

    Adler, J; Greweldinger, J; Hallac, R; Frier, S

    1981-01-01

    Renal vein thrombosis is a complication of the nephrotic syndrome presumably related to compression of renal veins by edematous parenchyma and a concomitant hypercoagulable state. The diagnosis has been made by demonstrating marked widening of the left renal vein as it crosses horizontally anterior to the aorta on computed tomography. Inferior venacavography confirmed the presence of thrombosis within the vessels. CT is suggested as a method for noninvasive imaging of the renal veins which might eliminate the need for venography.

  19. Reducing intimal hyperplasia in vein grafts harvested by a no-touch harvesting technique

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Objective To investigate the effect of no-touch harvesting technique in reducing vein graft intimal hyperplasia. Methods This longitudinal trial compared graft angiostenosis of two groups undergoing jugular vein to carotid artery interposition grafting in rabbit model. Conventional group:12 rabbits had their veins stripped,distended,and stored in heparinized saline solution. No-touch group:12 rabbits had veins removed with surrounding tissues,but were not distended,and stored in heparinized blood. The graft...

  20. Intensity Variation Normalization for Finger Vein Recognition Using Guided Filter Based Singe Scale Retinex

    OpenAIRE

    Shan Juan Xie; Yu Lu; Sook Yoon; Jucheng Yang; Dong Sun Park

    2015-01-01

    Finger vein recognition has been considered one of the most promising biometrics for personal authentication. However, the capacities and percentages of finger tissues (e.g., bone, muscle, ligament, water, fat, etc.) vary person by person. This usually causes poor quality of finger vein images, therefore degrading the performance of finger vein recognition systems (FVRSs). In this paper, the intrinsic factors of finger tissue causing poor quality of finger vein images are analyzed, and an int...

  1. Female Pelvic Vein Embolization: Indications, Techniques, and Outcomes

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, Anthony James, E-mail: consultant@radiologist.co.uk [The Imaging Clinic (United Kingdom)

    2015-08-15

    Until recently, the main indication for pelvic vein embolization (PVE) in women was to treat pelvic venous congestion syndrome (PVC) but increasingly, patients with refluxing pelvic veins associated with leg varicosities are also being treated. A more unusual reason for PVE is to treat pelvic venous malformations, although such lesions may be treated with sclerotherapy alone. Embolotherapy for treating PVC has been performed for many years with several published studies included in this review, whilst an emerging indication for PVE is to treat lower limb varicosities associated with pelvic vein reflux. Neither group, however, has been subjected to an adequate randomized, controlled trial. Consequently, some of the information presented in this review should be considered anecdotal (level III evidence) at this stage, and a satisfactory ‘proof’ of clinical efficacy remains deficient until higher-level evidence is presented. Furthermore, a wide range of techniques not accepted by all are used, and some standardization will be required based on future mandatory prospective studies. Large studies have also clearly shown an unacceptably high recurrence rate of leg varicose veins following venous surgery. Furthermore, minimally or non-invasive imaging is now revealing that there is a refluxing pelvic venous source in a significant percentage of women with de novo leg varicose veins, and many more with recurrent varicosities. Considering that just over half the world’s population is female and a significant number of women not only have pelvic venous reflux, but also have associated leg varicosities, minimally invasive treatment of pelvic venous incompetence will become a common procedure.

  2. Veia gástrica posterior: hipertensão porta Posterior gastric vein: portal hipertension

    Directory of Open Access Journals (Sweden)

    Alcino Lázaro da Silva

    1999-10-01

    Full Text Available A veia gástrica posterior não é muito citada nos livros de anatomia e nos trabalhos sobre hipertensão porta. Estudou-se sua anatomia, freqüência e desembocadura. Ela foi encontrada em 54% dos casos e, em 100%, desembocava na veia esplênica. Discute-se a vantagem ou não de sua ligadura ou preservação no tratamento cirúrgico da hipertensão porta.The posterior gastric vein has not been mentioned very often neither in anatomy textbooks nor in portal hypertension papers. The authors studied the anatomy, frequency and confluence of this vein because is a huge variety in the presentation of esophageal varices. Twenty-six adult preserved corpses (twenty females and six males had a wide abdominal incision allowing the dissection of the portal system, identifying the frequency and confluence of its tributaries, notably the posterior gastric vein. The portal vein, in all cases, was formed by the confluence of the superior mesenteric vein with the splenic vein and had a mean length of 6.4 cm. The splenic vein had a mean length of 6.5 cm. The left gastric vein was tributary of the portal vein in 50% of the cases and in 30% of the cases in the splenic vein. The right gastric vein had it's confluence to portal vein in 30 % of the cases and to the splenic vein in 4 %. The inferior mesenteric vein was tributary of the splenic vein in 54% of the cases and in the superior mesenteric vein in 46%. The left gastro-omental vein had its confluence to the splenic vein in 50% of the cases and to the inferior polar vein in 34 %. The middle colic vein had its confluence to superior mesenteric vein in 42% of the cases, to inferior mesenteric vein in 12% and to splenic vein in 8%. The posterior gastric vein was found in 54% of the corpses, and in all cases it was a tributary of the splenic vein, in retropancreatic position, coming from the esophageal-gastric junction. These findings agree with previous papers describing a prevalence of 60% of posterior gastric

  3. Multidetector CT venography and contrast-enhanced MR venography of the inferior mesenteric vein in paediatric extrahepatic portal vein obstruction

    Energy Technology Data Exchange (ETDEWEB)

    Chennur, Vikash SrinivasaiahSetty; Sharma, Raju; Gamanagatti, Shivanand; Gupta, Arun Kumar [All India Institute of Medical Sciences (AIIMS), Department of Radiology, New Delhi (India); Bhatnagar, Veereshwar [AIIMS, Department of Paediatric Surgery, New Delhi (India); Vishnubhatla, Sreenivas [AIIMS, Department of Biostatistics, New Delhi (India)

    2011-03-15

    Extrahepatic portal vein obstruction (EHPVO) is a common cause of paediatric portal hypertension and the only permanent treatment is shunt surgery. The inferior mesenteric vein (IMV) is a portal venous channel that can be used for the shunt when the splenic vein/superior mesenteric vein is thrombosed or when a lienorenal shunt is not possible. To compare MDCT venography (MDCTV) and contrast-enhanced MR venography (CEMRV) for visualisation of the IMV in children with EHPVO. This was a prospective study of 26 children (4-12 years, median 10 years) who underwent MDCTV and CEMRV. The IMV visualisation was graded using 4- and 2-point scales and the difference in visualisation was assessed by calculating the exact significance probability (P). The IMV was visualised in all children on MDCTV and 25/26 children on CEMRV (96%). The images were diagnostic in 23/26 children (88%) on MDCTV and in 18/26 (69%) children on CEMRV (P = 0.063). MDCTV and CEMRV are comparable for IMV visualisation with a tendency toward MDCTV being superior. (orig.)

  4. Leaf hydraulic conductance varies with vein anatomy across A rabidopsis thaliana wild-type and leaf vein mutants

    NARCIS (Netherlands)

    Caringella, M.A.; Bongers, F.J.; Sack, L.

    2015-01-01

    Leaf venation is diverse across plant species and has practical applications from paleobotany to modern agriculture. However, the impact of vein traits on plant performance has not yet been tested in a model system such as Arabidopsis thaliana. Previous studies analysed cotyledons of A. thaliana vei

  5. Risk factors for upper limb deep vein thrombosis associated with the use of central vein catheter in cancer patients.

    NARCIS (Netherlands)

    Verso, M.; Agnelli, G.; Kamphuisen, P.W.; Ageno, W.; Bazzan, M.; Lazzaro, A.; Paoletti, F.; Paciaroni, M.; Mosca, S.; Bertoglio, S.

    2008-01-01

    Deep vein thrombosis of upper limb is a common complication of CVC in patients with cancer. In these patients the risk factors for CVC-related thrombosis are not completely defined. The purpose of this study was to identify the risk factors for CVC-related thrombosis in patients included in a random

  6. DEGRADATION OF A SUPPORTING PROSTHESIS CAN OPTIMIZE ARTERIALIZATION OF AUTOLOGOUS VEINS

    NARCIS (Netherlands)

    ZWEEP, HP; SATOH, S; VANDERLEI, B; HINRICHS, WLJ; FEIJEN, J; WILDEVUUR, CRH

    1993-01-01

    In a previous study, we implanted autologous vein grafts in the carotid artery of rabbits supported by a compliant, biodegradable prosthesis to prevent vein wall damage due to the higher arterial pressure. We showed that such a supporting prosthesis indeed reduces damage to these vein grafts and all

  7. Update of endovenous treatment modalities for insufficient saphenous veins-A review of literature

    NARCIS (Netherlands)

    van Eekeren, Ramon R. J. P.; Boersma, Doeke; de Vries, Jean-Paul P. M.; Zeebregts, Clark J.; Reijnen, Michel M. P. J.

    2014-01-01

    Lower-limb venous insufficiency resulting from saphenous vein incompetence is a common disorder, increasing with age. For decades, surgical stripping of the great saphenous vein has been the gold standard in varicose vein treatment. The desire to optimize outcomes of treatment and reduce surgical tr

  8. Malpostion of subclavin central venous cannulation into ipsilateral jugular vein -An unusal case report

    Directory of Open Access Journals (Sweden)

    Vishal

    2013-11-01

    Full Text Available ABSTRACT: Central venous catheterization (CVC via infraclavicular subclavian approach in neurosurgical pat ients is very common practice. Malpositioning of central venous catheter inserted into subclavian vein is a known and dreaded complication. Malpositioning of catheter tip into ipsilateral jugular vein is an unusual occurrence. We hereby describe a case whe re a subclavian central venous catheter malpositioned into ipsilateral jugular vein

  9. Malpostion of subclavin central venous cannulation into ipsilateral jugular vein -An unusal case report

    OpenAIRE

    Vishal; Sumantra; Rajnikant; Dilpreet; Shweta

    2013-01-01

    ABSTRACT: Central venous catheterization (CVC) via infraclavicular subclavian approach in neurosurgical pat ients is very common practice. Malpositioning of central venous catheter inserted into subclavian vein is a known and dreaded complication. Malpositioning of catheter tip into ipsilateral jugular vein is an unusual occurrence. We hereby describe a case whe re a subclavian central venous catheter malpositioned into ipsilateral jugular vein

  10. Meandering right pulmonary vein associated with severe and progressive "idiopathic-like" pulmonary hypertensive vascular disease.

    Science.gov (United States)

    Cuenca, Sofia; Bret, Montserrat; del Cerro, Maria Jesus

    2016-03-01

    Congenital anomalies of the pulmonary veins are rare. Meandering right pulmonary vein, considered a part of the Scimitar syndrome spectrum, is often an incidental finding during chest imaging. We present the case of a 4-year-old girl diagnosed with meandering pulmonary vein, who developed pulmonary hypertensive disease with an aggressive course, in spite of absence of hypoxia or elevated pulmonary wedge pressure.

  11. [Lesion of pelvic organs in secondary varicose veins of the small pelvis].

    Science.gov (United States)

    Tsukanov, Yu T; Tsukanov, A Yu; Levdansky, E G

    2015-01-01

    The authors studied peculiarities of pelvic organs lesions in patients presenting with secondary small pelvic varicose veins (SPVV) induced by endured thrombosis of iliac veins. The study included a total of 70 patients after endured thrombosis of iliac veins verified by radiodiagnostic methods. The average duration of thrombosis amounted to 3.8 years. The patients were subdivided into two groups. The Study Group comprised 48 patients presenting with small pelvic varicose veins revealed by duplex scanning; the Control Group was composed of 22 patients with no varicose pelvic veins. It was determined that characteristic features of patients with secondary SPVV having developed after iliac veins thrombosis included chronic pelvic pain, dilatation of cavernous veins of the rectum, inguinal vein varicosity and varicose veins of the groin and anterior abdominal wall. Formation of secondary SPVV after endured iliac vein thrombosis leads to disorders of pelvic organs, similar to those in primary varicosity, but more often being functional. Endured iliac veins thrombosis in formation of secondary SPVV leads to urination impairments with prevalence of moderately pronounced symptomatology. Small pelvic organs dysfunction in women with secondary SPVV due to endured iliac veins thrombosis manifests itself in dyspareunia, leukorrhea, and dysmenorrhea.

  12. Multiple hyperplastic nodules in the liver with congenital absence of portal vein: MRI findings

    Energy Technology Data Exchange (ETDEWEB)

    Turkbey, Baris; Karcaaltincaba, Musturay; Haliloglu, Mithat [Hacettepe University School of Medicine, Department of Radiology, Ankara (Turkey); Demir, Hulya; Yuce, Aysel [Hacettepe University School of Medicine, Department of Paediatric Gastroenterology, Ankara (Turkey); Akcoren, Zuhal [Hacettepe University School of Medicine, Department of Paediatric Pathology, Ankara (Turkey)

    2006-05-15

    We describe a 10-year-old girl with congenital absence of the portal vein (CAPV) and multiple hyperplastic nodules in the liver. MRI appearances of the liver lesions and the portocaval anastomosis between the inferior mesenteric vein and internal iliac veins are presented. In addition, the relevance of CAPV and nodular lesions of the liver is reviewed. (orig.)

  13. It's not a cervical lymph node, it's a vein: CT and MR imaging findings in the veins of the head and neck.

    Science.gov (United States)

    Escott, Edward J; Branstetter, Barton F

    2006-01-01

    The anatomy and imaging appearances of the veins of the head and neck can vary considerably, and normal veins may mimic disease processes at computed tomography (CT) and magnetic resonance (MR) imaging. On unenhanced CT scans, aberrant veins may be difficult to differentiate from lymph nodes or other pathologic conditions. Even at contrast material-enhanced CT, differences in venous enhancement or the mixing of opacified with nonopacified blood can lead to confusion, particularly if the vein is focally dilated. Similarly, the size and signal intensity of head and neck veins may vary at MR imaging due to slow or turbulent flow or variable enhancement, resulting in misdiagnosis. A thorough understanding of the normal venous anatomy and common variants is necessary to properly differentiate an unopacified or focally dilated vein from lymphadenopathy or some other disease entity and can help the radiologist avoid the erroneous interpretation of findings.

  14. Computed tomography findings in 10 cases of iliac vein compression (May-Thurner) syndrome

    Energy Technology Data Exchange (ETDEWEB)

    Oguzkurt, Levent [Baskent University, Adana Teaching and Medical Research Center, Department of Radiology, Adana (Turkey)]. E-mail: loguzkurt@yahoo.com; Tercan, Fahri [Baskent University, Adana Teaching and Medical Research Center, Department of Radiology, Adana (Turkey); Pourbagher, M. Ali [Baskent University, Adana Teaching and Medical Research Center, Department of Radiology, Adana (Turkey); Kizilkilic, Osman [Baskent University, Adana Teaching and Medical Research Center, Department of Radiology, Adana (Turkey); Turkoz, Riza [Baskent University, Adana Teaching and Medical Research Center, Department of Thoracic and Cardiovascular Surgery, Adana (Turkey); Boyvat, Fatih [Baskent University, Faculty of Medicine, Department of Radiology, Ankara (Turkey)

    2005-09-01

    Objective: To present the computed tomography (CT) findings for the iliac veins of 10 patients who had left-sided lower extremity deep vein thrombosis due to iliac vein compression syndrome. Materials and methods: The CT findings for 10 cases of left-sided acute or chronic deep vein thrombosis caused by iliac vein compression syndrome were retrospectively evaluated. The patients were five women and five men (mean age {+-} S.D., 49.9 {+-} 15.6 years). In each patient with iliac vein compression syndrome, the diagnosis of the compression was established by venography performed during endovascular treatment. Diameter of the left common iliac vein was also measured in 14 control subjects without any lower extremity venous disease for comparison. Results: In all 10 cases, CT images in the transverse plane demonstrated the left common iliac vein being compressed by the overlying right common iliac artery. The mean diameter at the origin of the left common iliac vein (3.5 mm) in patients group was much smaller than the mean diameter of the same vein (11.5 mm) in the control group (p < 0.01). The mean percent stenosis of the left common iliac vein due to compression by the artery was 68%. Conclusion: Pelvic CT images in the transverse plane are useful for detecting iliac vein compression by the overlying right common iliac artery in patients with left-sided deep vein thrombosis. Radiologists should be aware of this imaging finding of iliac vein compression by the artery where the inferior vena cava bifurcates into the common iliac veins.

  15. A Case Study of Deep Vein Thrombosis of the Right Internal Jugular Vein in a Healthy 21-Year-Old Male

    Directory of Open Access Journals (Sweden)

    Javier Corral

    2016-01-01

    Full Text Available We are reporting a case of a healthy 21-year-old male, with no significant past medical history, who was found to have an incidental nonocclusive deep vein thrombosis in the right internal jugular vein detected on a head MRI previously ordered for work-up of headaches. A follow-up upper extremity venous Doppler ultrasound confirmed the presence of a partially occlusive deep vein thrombosis in the right jugular vein. The case presented is unique for the reason that the patient is young and has no prior risk factor, personal or familial, for venous thrombosis except for associated polycythemia on clinical presentation.

  16. [MANAGEMENT STANDARDS FOR QUALIFIED PHYSICIANS AND MEDICAL FACILITIES FOR ENDOVENOUS ABLATION OF VARICOSE VEINS].

    Science.gov (United States)

    Ogawa, Tomohiro

    2015-05-01

    Endovenous ablation of saphenous veins using laser energy was approved by the Japanese Ministry of Health, Labor and Welfare in 2011 as a more effective, less-invasive method than classical treatment for varicose veins. New medical laser and radiofrequency devices for this purpose were also approved in 2014. A requirement for the treatment of varicose veins with health insurance reimbursement using these devices is a physician with sufficient knowledge of endovenous ablation. The management standards for endovenous ablation set by varicose vein specialist medical societies are used to accredit qualified physicians who have basic clinical experience in the treatment of varicose veins, qualified instructors, and safe, effective medical facilities.

  17. Varicose veins: look before you strip - the occluded inferior vena cava and other lurking pathologies.

    Science.gov (United States)

    Mokoena, Taole

    2014-05-15

    Lower limb varicose veins are a common complication of bipedal human movement and deep-vein thrombosis. However, they may have unusual causes, e.g. forming as collaterals around an obstruction or resulting from vascular malformations. Surgery in these cases can be inappropriate or harmful. Five cases of lower limb varicose veins in which there was underlying pathology highlight the fact that cursory examination of patients with varicose veins and inappropriate special investigations can miss rare but significant underlying pathology. Patients should be examined systematically, and varicose veins in unusual situations should alert the clinician. Inappropriate surgery can be harmful.

  18. Autogenous vein graft thrombosis following exposure to calcium-free solutions (calcium paradox).

    Science.gov (United States)

    Nozick, J H; Farnsworth, P; Montefusco, C M; Parsonnet, V; Ruigrok, T J; Zimmerman, A N

    1981-01-01

    The morphological and functional effects of calcium-free and calcium-containing solutions on canine jugular vein intima were examined under conditions which closely resemble those techniques currently employed in peripheral vascular and aortocoronary bypass surgery. Veins that had been exposed only to calcium-containing solutions remained patent for the duration of the experimental period. Vein perfusion with a calcium-free solution, however, resulted in disruption of the jugular vein intima once calcium ions were reintroduced. Autogenous as a femoral arterial graft became thrombosed within 60 minutes. It is therefore suggested that vein grafts of autogenous origin be irrigated with calcium-containing solutions to prevent intimal damage and thrombosis.

  19. Cirurgia do arco aórtico com perfusão cerebral bilateral pelo isolamento do tronco braquiocefálico e da artéria carótida esquerda Aortic arch surgery with bilateral cerebral perfusion by isolation of brachiocephalic trunk and left carotid artery

    Directory of Open Access Journals (Sweden)

    Valdo José Carreira

    2008-03-01

    Full Text Available OBJETIVO: Estudar os resultados da técnica descrita por Carreira et al. com utilização de perfusão cerebral seletiva bilateral (PCSAB pelo isolamento do tronco braquiocefálico e artéria carótida esquerda. MÉTODOS: Quinze pacientes foram operados consecutivamente entre de junho de 2005 e setembro de 2007. Os dados foram analisados por programa informatizado Epi Info e significância estatística com p0,05. CONCLUSÃO: A técnica de PCSAB é reprodutível e apresenta resultados semelhantes aos da literatura mundial. A excelente evolução neurológica e o fácil controle de sangramentos nas linhas de sutura podem ter contribuído com os resultados obtidos.OBJECTIVE: To evaluate the results of a technique described by Carreira et al. using bilateral antegrade selective cerebral perfusion by isolating the brachiocephalic trunk and the left carotid artery. METHODS: Fifteen patients were operated between June 2005 and September 2007. Data analysis were performed using Epi Info and statistical significance was set at p0.05. CONCLUSION: The technique of bilateral selective cerebral perfusion described by Carreira et al. can be performed by others and presents similar results to the international literature. The excellent neurological outcome and easy bleeding control on surgical sutures lines are the major advantages of this new procedure.

  20. Cranial dural arteriovenous shunts. Part 1. Anatomy and embryology of the bridging and emissary veins.

    Science.gov (United States)

    Baltsavias, Gerasimos; Parthasarathi, Venkatraman; Aydin, Emre; Al Schameri, Rahman A; Roth, Peter; Valavanis, Anton

    2015-04-01

    We reviewed the anatomy and embryology of the bridging and emissary veins aiming to elucidate aspects related to the cranial dural arteriovenous fistulae. Data from relevant articles on the anatomy and embryology of the bridging and emissary veins were identified using one electronic database, supplemented by data from selected reference texts. Persisting fetal pial-arachnoidal veins correspond to the adult bridging veins. Relevant embryologic descriptions are based on the classic scheme of five divisions of the brain (telencephalon, diencephalon, mesencephalon, metencephalon, myelencephalon). Variation in their exact position and the number of bridging veins is the rule and certain locations, particularly that of the anterior cranial fossa and lower posterior cranial fossa are often neglected in prior descriptions. The distal segment of a bridging vein is part of the dural system and can be primarily involved in cranial dural arteriovenous lesions by constituting the actual site of the shunt. The veins in the lamina cribriformis exhibit a bridging-emissary vein pattern similar to the spinal configuration. The emissary veins connect the dural venous system with the extracranial venous system and are often involved in dural arteriovenous lesions. Cranial dural shunts may develop in three distinct areas of the cranial venous system: the dural sinuses and their interfaces with bridging veins and emissary veins. The exact site of the lesion may dictate the arterial feeders and original venous drainage pattern.

  1. Clinical anatomic study of the lower lumbar anterolateral vein: with respect to retroperitoneal endoscopic surgery

    Institute of Scientific and Technical Information of China (English)

    LU Sheng; XU Yong-qing; DING Zi-hai; WANG Yue-li; SHI Ji-hong; ZHONG Shi-zhen

    2008-01-01

    To study the anatomy of veins of the lower lumbar spine and provide the anatomic basement for laparoscopic lumbar surgery.Methods:A total of 15 formaldehyde-preserved cadavers were studied with special attention to the variety and surrounding structure of ascending lumbar vein(ALV)and iliolumbar veins(ILV),and their relationship with lumbar plexus.Results:ALV and ILV can be found on every sides,which have four variants including separate entry and common entry. The ascending vein and iliolumbar vein separately enter common iliac vein in 18 cases, and as a common stem enter the common iliac vein in 12 cases. Retracting common iliac vein medially both the ascending lumbar and the iliolumbar veins are always at risk of avulsion on exposure of the disc space. The injury of obturator nerve and lumbosacral trunk of lumbar plexus should be avoided.Conclusion:Awareness of these anatomic variation can prevent the hemorrhage and be helpful for the surgeon in performing a careful ligation of these veins before medial retraction of the common iliac vein. Our findings emphasize the need for proper dissection of ALV and ILV before ligature during exposure of the lower lumbar spine.

  2. A review of the anatomy and clinical significance of adrenal veins.

    Science.gov (United States)

    Cesmebasi, Alper; Du Plessis, Maira; Iannatuono, Mark; Shah, Sameer; Tubbs, R Shane; Loukas, Marios

    2014-11-01

    The adrenal veins may present with a multitude of anatomical variants, which surgeons must be aware of when performing adrenalectomies. The adrenal veins originate during the formation of the prerenal inferior vena cava (IVC) and are remnants of the caudal portion of the subcardinal veins, cranial to the subcardinal sinus in the embryo. The many communications between the posterior cardinal, supracardinal, and subcardinal veins of the primordial venous system provide an explanation for the variable anatomy. Most commonly, one central vein drains each adrenal gland. The long left adrenal vein joins the inferior phrenic vein and drains into the left renal vein, while the short right adrenal vein drains immediately into the IVC. Multiple variations exist bilaterally and may pose the risk of surgical complications. Due to the potential for collaterals and accessory adrenal vessels, great caution must be taken during an adrenalectomy. Adrenal venous sampling, the gold standard in diagnosing primary hyperaldosteronism, also requires the clinician to have a thorough knowledge of the adrenal vein anatomy to avoid iatrogenic injury. The adrenal vein acts as an important conduit in portosystemic shunts, thus the nature of the anatomy and hypercoagulable states pose the risk of thrombosis.

  3. Upper extremity deep vein thrombosis in a military patient.

    Science.gov (United States)

    Bullock, Charlotte; Johnston, A McD

    2016-08-01

    We describe the case of a 23-year-old serviceman on overseas deployment who presented with a painful, swollen arm. Investigations showed an upper extremity deep vein thrombosis (UEDVT) of the right arm with an associated asymptomatic pulmonary embolism, which was treated with warfarin anticoagulation. Further investigation identified positional obstruction at the thoracic outlet, and the patient was diagnosed with Paget-Schroetter syndrome. He underwent elective resection of the first rib, and has now returned to normal duties. After review of the literature on UEDVT, it is suggested that in this military patient, the occurrence of an anatomical variant put him at risk of upper limb venous thrombosis, which was probably potentiated by the occupational factor of carrying a rifle. The external compression of the subclavian vein from the rifle butt and hypertrophied muscles, in addition to the anatomical variation, caused repetitive microtrauma of the vessel intima, which precipitated venous thrombosis.

  4. Left testicular artery arching over the ipsilateral renal vein

    Institute of Scientific and Technical Information of China (English)

    Munekazu Naito; Hayato Terayama; Yoichi Nakamura; Shogo Hayashi; Takayoshi Miyaki; Masahiro Itoh

    2006-01-01

    Aim: To report two cases of the left testicular artery arching over the left renal vein (LRV) before running downward to the testis. Methods: The subjects were obtained from two Japanese cadavers. During the student course of gross-anatomical dissection, the anatomical relationship between the testicular vessels and the renal vein was specifically observed. Results: The arching left testicular artery arose from the aorta below the LRV and made a loop around the LRV, which appeared to be mildly compressed between the arching artery and the psoas major muscle.Conclusion: Clinically, compression of the LRV between the abdominal aorta and the superior mesenteric artery occasionally induces LRV hypertension, resulting in varicocele, orthostatic protenuria and hematuria. Considering that the incidence of a left arching testicular artery is higher than that of a right one, an arching left artery could be an additional cause of LRV hypertension.

  5. Subclavian vein aneurysm secondary to a benign vessel wall hamartoma.

    Science.gov (United States)

    Warren, Patrick; Spaeth, Maya; Prasad, Vinay; McConnell, Patrick

    2013-11-01

    Venous aneurysms are rare clinical entities, particularly in children, and their presentation and natural history often depend on the anatomical location and underlying etiology. We present a single case of a 12-year-old girl who presented with a palpable right supraclavicular mass. Imaging evaluation with CT, conventional venography, MRI and sonography revealed a large fusiform subclavian vein aneurysm with an unusual, mass-like fibrofatty component incorporated into the vessel wall. The girl ultimately required complete resection of the right subclavian vein with placement of a synthetic interposition graft. This case provides a radiology/pathology correlation of an entity that has not previously been described as well as an example of the utility of multiple imaging modalities to aid diagnosis and preoperative planning.

  6. Subclavian vein aneurysm secondary to a benign vessel wall hamartoma

    Energy Technology Data Exchange (ETDEWEB)

    Warren, Patrick [Nationwide Children' s Hospital, Section of Pediatric Interventional Radiology, Columbus, OH (United States); Spaeth, Maya [Nationwide Children' s Hospital, Section of Plastic and Reconstructive Surgery, Columbus, OH (United States); Prasad, Vinay [Nationwide Children' s Hospital, Section of Pediatric Pathology, Columbus, OH (United States); McConnell, Patrick [Nationwide Children' s Hospital, Section of Cardiothoracic Surgery, Columbus, OH (United States)

    2013-11-15

    Venous aneurysms are rare clinical entities, particularly in children, and their presentation and natural history often depend on the anatomical location and underlying etiology. We present a single case of a 12-year-old girl who presented with a palpable right supraclavicular mass. Imaging evaluation with CT, conventional venography, MRI and sonography revealed a large fusiform subclavian vein aneurysm with an unusual, mass-like fibrofatty component incorporated into the vessel wall. The girl ultimately required complete resection of the right subclavian vein with placement of a synthetic interposition graft. This case provides a radiology/pathology correlation of an entity that has not previously been described as well as an example of the utility of multiple imaging modalities to aid diagnosis and preoperative planning. (orig.)

  7. Adrenal vein sampling in the diagnosis of aldosteronism

    Directory of Open Access Journals (Sweden)

    Deipolyi AR

    2015-06-01

    Full Text Available Amy R Deipolyi,1 Rahmi Oklu2 1Vascular and Interventional Radiology, NYU Langone Medical Center, New York, NY, USA; 2Interventional Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA Abstract: Primary aldosteronism causes 15%–25% of cases of drug-resistant hypertension. Adrenal vein sampling (AVS is a procedure entailing the measurement of aldosterone from both adrenal veins, to diagnose an adrenal source of excess aldosterone secretion. Because unilateral adrenal etiologies of primary aldosteronism may be surgically resected, identifying these sources by venous sampling is critical. Technical aspects of the procedure are reviewed, with emphasis on strategies to avoid common difficulties during AVS. Keywords: primary aldosteronism, hypertension, venous sampling, adrenal adenoma

  8. [NHG guideline 'Deep-vein thrombosis and pulmonary embolus'].

    Science.gov (United States)

    de Jong, Jip; Lucassen, Wim A M; Geersing, Geert-Jan; Burgers, Jako S; Wiersma, Tjerk

    2015-01-01

    The revised Dutch College of General Practitioners (Nederlands Huisartsen Genootschap [NHG]) guideline 'Deep-vein thrombosis and pulmonary embolus' includes recommendations for the treatment of patients with deep-vein thrombosis (DVT) and thrombophlebitis, and for the exclusion of pulmonary embolism (PE). The general practitioner (GP) can exclude the presence of DVT or PE in some patients by using a decision rule and a D-dimer test. When using D-dimer test as a point-of-care test, meticulous care is essential during the test procedure and storage of blood. The GP can treat many patients with DVT; the NHG guideline does not advise use of direct oral anticoagulants. In the case of an isolated DVT in the calf, treatment with anticoagulants or ultrasound follow-up can be chosen in consultation with the patient or on the basis of regional agreements. In the case of patients with superficial thrombophlebitis, a wait-and-see approach is usually sufficient.

  9. Vascular endothelial growth factor blocking agents in retinal vein occlusion

    Directory of Open Access Journals (Sweden)

    Chris Canning

    2008-01-01

    Full Text Available This paper summarises the current status of the use of vascular endothelial growth factor (VEGF blocking agents in retinal vein occlusion. There have been no randomised controlled trials comparing this treatment with the current standard treatment (largely laser so the lower grade evidence of single treatment case series and anecdotal reports are discussed. VEGF blockers are good at reducing macular oedema in the short term, do improve visual acuity in many cases, and do not seem to adversely affect the long term revascularisation that is necessary to overcome the vein occlusion. VEGF blocking agents are not used in isolation in this condition - they will remain an adjunct to systemic and other local treatments. The literature was reviewed in online searches of Embase and Ovid and the papers quoted are a representative sample of a larger body of publications.

  10. Retinal vein occlusion during flare of multicentric Castleman's disease

    Directory of Open Access Journals (Sweden)

    Kozak I

    2013-08-01

    Full Text Available Igor Kozak,1,2 Erin G Reid31King Khaled Eye Specialist Hospital, Riyadh, Kingdom of Saudi Arabia; 2University of California San Diego, Jacobs Retina Center at the Shiley Eye Center, La Jolla, CA, USA; 3University of California San Diego, Moores Cancer Center, AIDS Malignancy Consortium, La Jolla, CA, USAAbstract: We report a case of successive bilateral retinal vein occlusion in a human immunodeficiency virus (HIV-positive male with multicentric Castleman's disease treated successfully with a single injection of intravitreal bevacizumab. Castleman's disease should be a differential diagnosis of occlusive retinovascular disease and, occasionally, ocular manifestation can lead to systemic diagnosis.Keywords: retinal vein occlusion, Castleman's disease, intravitreal bevacizumab

  11. Spontaneous Rupture of Uterine Vein in Twin Pregnancy

    Directory of Open Access Journals (Sweden)

    Emek Doger

    2013-01-01

    Full Text Available Objective. Aim of our study is to present a case of a twin pregnancy following invitro fertilization cycle complicated with hemoperitoneum at third trimester. Case. A 26-year-old nulliparous pregnant woman at 32 weeks of gestation with twin pregnancy following invitro fertilization cycle complained of abdominal pain. After 48 hours of admission, laparotomy was performed with indications of aggravated abdominal pain and decreased hemoglobin levels. Utero-ovarian vein branch rupture was detected on the right posterior side of uterus and bleeding was stopped by suturing the vein. Etiopathogenesis of the present case still remains unclear. Conclusion. Spontaneous rupture of the uterine vessels during pregnancy is a rare complication and may lead to maternal and fetal morbidity and mortality. Diagnosis and treatment are based on the clinical symptoms of acute abdominal pain and laboratory tests of hypovolemic shock signs.

  12. Varicose vein trauma: a risk for pulmonary embolism.

    Science.gov (United States)

    Joy, Parijat S; Marak, Creticus P; Ponea, Anna M; Guddati, Achuta K

    2014-10-01

    Pulmonary embolism (PE) is a deceptive condition which is often incorrectly diagnosed leading to high morbidity and mortality. We present a case where symptoms were localised to different areas of the body starting with post-traumatic pain over lower extremity varicosities that migrated sequentially over a month to the knee, hip, back, abdomen and chest finally presenting as syncope. Despite a low pre-test clinical probability, a very high index of suspicion led to a timely diagnosis of a massive bilateral PE that eventually caused a troponin leak. The aetiology is highly suspicious of a thrombus which originated in the veins of the leg due to trauma over varicose veins.The case described here exemplifies the importance of considering trauma to varicosities as a risk factor for embolism when the clinical picture is concerning but other signs and symptoms of PE are not apparent.

  13. Tumoural portal vein thrombosis. Enhancement with MnDPDP

    Energy Technology Data Exchange (ETDEWEB)

    Marti-Bonmati, L. [Dept. of Radiology, MR Unit, Dr. Peset Hospital, Valencia (Spain); Lonjedo, E. [Dept. of Radiology, MR Unit, Dr. Peset Hospital, Valencia (Spain); Mathieu, D. [Dept. of Radiology, Henri Mondor Hospital, Paris Univ., Creteil (France); Coffin, C. [Dept. of Radiology, Henri Mondor Hospital, Paris Univ., Creteil (France); Poyatos, C. [Dept. of Radiology, MR Unit, Dr. Peset Hospital, Valencia (Spain); Anglade, M.C. [Dept. of Radiology, Henri Mondor Hospital, Paris Univ., Creteil (France)

    1997-07-01

    Purpose: Intrahepatic thrombus is usually associated with either cirrhosis or hepatocellular carcinoma (HCC). Most HCCs enhance after the administration of MnDPDP (Teslascan). Our objective was to analyze the enhancement characteristics of tumour portal vein thrombi. Material and Methods: Thrombi affecting the main or segmental portal veins (17 cases) and the suprahepatic inferior vena cava (1 case) were retrospectively selected from a series of 128 patients studied with MR imaging before and after the administration of MnDPDP. Enhancement was assessed qualitatively and quantitatively. Results: All tumour thrombi enhanced after MnDPDP administration. The enhancement was more conspicuous in the GRE images. On the quantitative evaluation, the portal thrombus enhancement was greater for GRE images than SE images. Portal thrombi enhanced more than the liver and the HCCs. There was a significant difference between the enhancement of the HCCs and the thrombi with both MR imaging techniques. (orig./AJ).

  14. Ultrasound surveillance in endoluminal laser treatment for varicose veins

    Directory of Open Access Journals (Sweden)

    Varetto G

    2013-10-01

    Full Text Available Gianfranco Varetto, Paolo Garneri, Claudio Castagno, Valentina Molinaro, Simone Quaglino, Matteo Ripepi, Emilio Benintende, Lorenzo Gibello, Stefano Zan, Luigi Contessa, Ugo Bertoldo, Pietro Rispoli Vascular Surgery, Department of Surgical Sciences, University of Turin, Turin, Italy Abstract: Venous ultrasonography is an indispensable tool in minimally invasive surgery for the treatment of varicose veins. However, the criteria for defining preoperative imaging parameters, outcome monitoring, and follow up are not well characterized. In this retrospective study, we reviewed the ultrasound periprocedural parameters and the outcomes in 274 patients (280 limbs after endoluminal laser treatment, at early (<30 days and late (1–60 months follow up. Treatment failure was defined as complete recanalization of the saphenous trunk, thigh perforator vein insufficiency, and recanalization of the proximal saphenous trunk. Judicious patient selection correlated with favorable outcome at the follow-up ultrasound examination. Keywords: follow-up, chronic venous disease, intravenous, obliteration

  15. A rare case of branch retinal vein occlusion following Sirsasana

    Science.gov (United States)

    Balamurugan, Anugraha; Srikanth, Krishnagopal

    2016-01-01

    Sirsasana is a type of headstand postural yoga in which the body is completely inverted. It is performed with or without wall support. In this position, the body is held upright supported by the forearms, while the crown of the head rests lightly on the floor. This is an advanced pose and should be attempted under the supervision of a qualified yoga instructor. The practice of Sirsasana is postulated to increase blood flow to the brain, improving memory, and other intellectual functions. It is also known to cause causes raised intraocular pressure, decompression retinopathy, glaucomatous visual field defects, central retinal vein occlusion, progression of glaucoma, optic neuropathy, and conjunctival varix thrombosis. We report a case of branch retinal vein occlusion following Sirsasana in a patient with systemic hypertension. PMID:27512326

  16. Radiofrequency ablation of an atypical left atrial flutter after pulmonary vein isolation

    Directory of Open Access Journals (Sweden)

    Bockeria L.A.

    2014-12-01

    Full Text Available In paroxysmal atrial fibrillation usually pulmonary veins isolation is enough, while in persistent and long-standing persistent forms ablation lines in the left atrium are needed. After that post ablational macroreentry tachycardia and focal atrial tachycardia, resistant to antiarrhythmic therapy, occur. Left atrial macroreentry tachycardia are localized perimitrally, around pulmonary veins and septally. There are also roof and posterior wall-associated macroreentry tachycardia. Considering relevance of postablation arrhythmias, we present our case report. A patient had paroxysmal atrial fibrillation. Pulmonary vein isolation was performed. After patient’s radiofrequency pulmonary vein isolation, three-dimensional map of left atrium was made using CARTO XP navigation system. Macroreentry tachycardia around left inferior pulmonary vein was revealed.There were fragmented potentials between left superior and left inferior pulmonary veins. An ablation lineconnecting inferior and superior pulmonary veins was made. After the completion of ablation line sinus rhythmwas restored.

  17. Nephrotic syndrome complicated with portal, splenic, and superior mesenteric vein thrombosis.

    Science.gov (United States)

    Park, Bong Soo; Park, Sihyung; Jin, Kyubok; Choi, Gibok; Park, Kang Min; Jo, Kyeong Min; Kim, Yang Wook

    2014-09-01

    Thromboembolism is a major complication of nephrotic syndrome. Renal vein thrombosis and deep vein thrombosis are relatively common, especially in membranous nephropathy. However, the incidence of portal vein and superior mesenteric vein (SMV) thrombosis in patients with nephrotic syndrome is very rare. To date, several cases of portal vein thrombosis treated by anticoagulation therapy, not by thrombolytic therapy, have been reported as a complication of nephrotic syndrome. Here, we report a case of portal, splenic, and SMV thrombosis in a patient with a relapsed steroid dependent minimal change disease who was treated successfully with anticoagulation and thrombolytic therapy using urokinase. Radiologic findings and his clinical conditions gradually improved. Six months later, a complete remission of the nephrotic syndrome was observed and the follow-up computed tomography scan showed the disappearance of all portal vein, splenic vein, and SMV thrombi.

  18. Vein Texture Extraction Using the Multiscale Second-Order Differential Model

    Directory of Open Access Journals (Sweden)

    Xiong Xinyan

    2013-07-01

    Full Text Available In order to analyze the back of hand vein pattern rapidly and effectively, a novel approach based on multi-scale second-order differential model is proposed to extract the vein texture from vein samples directly, which is made up of two section: one is the foundation of local second-order differential model of vein texture(VLSDM, the other is texture extraction based on the multi-scale VLSDM. This paper analyzes the vein extraction using the multi-scale VLSDM and handles the filter response using the method of multi-scale analyzed noise filtered. This new algorithm has achieved good results for the vein texture, which is fuzzy, uneven distributed and cross-adhesion. Additionally this method keeps the original form of local shape and achieves orientation and scale information of the vein texture. The experiment result getting from this new method has also compared with another method and shown its outstanding performance.  

  19. Cephalic vein: Saviour in the microsurgical reconstruction of breast and head and neck cancers

    Directory of Open Access Journals (Sweden)

    Vinay K Shankhdhar

    2012-01-01

    Full Text Available Background: Reconstruction with microvascular free flaps is considered the reconstructive option of choice in cancer of the head and neck regions and breast. Rarely, there is paucity of vessels, especially the veins, at the recipient site. The cephalic vein with its good caliber and constant anatomy is a reliable recipient vein available in such situations. Materials and Methods: It is a retrospective study from January 2010 to July 2012 and includes 26 patients in whom cephalic vein was used for free-flap reconstruction in head and neck (3 cases and breast cancers (23 cases. Results: All flaps in which cephalic vein was used survived completely. Conclusion: Cephalic vein can be considered as a reliable source of venous drainage when there is a non-availability/unusable of veins during free-flap reconstruction in the head and neck region and breast and also when additional source of venous drainage is required in these cases.

  20. Association of deep venous thrombosis with calf vein diameter in acute hemorrhagic stroke.

    Science.gov (United States)

    Ogata, Toshiyasu; Yasaka, Masahiro; Wakugawa, Yoshiyuki; Kitazono, Takanari; Okada, Yasushi

    2013-10-01

    We investigated the association between the development of deep venous thrombosis (DVT) and calf vein diameter in patients with acute hemorrhagic stroke. We measured the maximum diameter of paralytic side posttibial veins (PTVs) and peroneal veins (PVs) in 49 patients with intracerebral hemorrhage on admission and at 2 weeks after stroke onset by ultrasonography. We also examined for the presence or absence of DVT, and then analyzed the association of DVT with the maximum vein diameter. At 2 weeks after stroke, DVTs were detected in PTVs in 7 patients and in PVs in 6 patients. The maximum calf vein diameters at 2 weeks were significantly greater in patients with DVT compared with those without DVT (PTV, P = .033; PV, P = .015). Although calf vein diameter at admission did not influence the future incidence of DVT in patients with intracerebral hemorrhage, the presence of DVT was associated with calf vein dilatation.

  1. Nephrotic syndrome complicated with portal, splenic, and superior mesenteric vein thrombosis

    Directory of Open Access Journals (Sweden)

    Bong Soo Park

    2014-09-01

    Full Text Available Thromboembolism is a major complication of nephrotic syndrome. Renal vein thrombosis and deep vein thrombosis are relatively common, especially in membranous nephropathy. However, the incidence of portal vein and superior mesenteric vein (SMV thrombosis in patients with nephrotic syndrome is very rare. To date, several cases of portal vein thrombosis treated by anticoagulation therapy, not by thrombolytic therapy, have been reported as a complication of nephrotic syndrome. Here, we report a case of portal, splenic, and SMV thrombosis in a patient with a relapsed steroid dependent minimal change disease who was treated successfully with anticoagulation and thrombolytic therapy using urokinase. Radiologic findings and his clinical conditions gradually improved. Six months later, a complete remission of the nephrotic syndrome was observed and the follow-up computed tomography scan showed the disappearance of all portal vein, splenic vein, and SMV thrombi.

  2. Central retinal vein occlusion concomitant with dengue fever

    OpenAIRE

    Velaitham, Punithamalar; Vijayasingham, Nandini

    2016-01-01

    Background Dengue virus infection is on the rise and there is increasing number of ocular complications that are being reported. Most common ocular complications are macular edema, macular hemorrhages, and foveolitis. There are case reports on branch retinal vessel occlusions. Most of the ocular complications are attributed to the bleeding tendency and transudative process in dengue viral infection. This is a case report of ischemic central retinal vein occlusion (CRVO) concomitant with dengu...

  3. Human immunodeficiency virus-associated deep vein thrombosis

    Directory of Open Access Journals (Sweden)

    Akhilesh Kumar Singh

    2016-01-01

    Full Text Available Deep vein thrombosis (DVT has been reported to occur 2-10 times more common in human immunodeficiency virus-infected individuals than in the general population. We are reporting a case of DVT of right lower limb who was on highly active antiretroviral therapy. The patient did not have any acquired risk factors of DVT. The patient responded well to anticoagulation therapy.

  4. Deep Vein Thrombosis with First Episode Catatonia: A Case Report

    Directory of Open Access Journals (Sweden)

    Sunilkumar

    2015-04-01

    Full Text Available Catatonia is a medical emergency condition with varied causative factors. Subsequent medical complications of catatonia put the patient to high risk of morbidity and mortality. Earlier studies show mortality rates up to 50% without proper and timely intervention. Deep vein thrombosis is one such life threatening complication which can be prevented with proper management and care. A case of acute onset catatonia with a left leg DVT in a 21 yr old young single male is discussed here.

  5. [Renal vein infarction, a complication of paroxysmal nocturnal hemoglobinuria].

    Science.gov (United States)

    de Charry, Charlotte; de Charry, Félicité; Lemoigne, François; Lamboley, Jean-Laurent; Pasquet, Florian; Pavic, Michel

    2012-12-01

    Paroxysmal nocturnal hemoglobinuria (Marchiafava-Micheli disease) is a rare acquired clonal disorder of the hematopoietic cell, to a somatic mutation in the phosphatidylinositol glycan (PIG-A). The most frequent clinical manifestations are hemolytic crisis and venous thrombosis of the mesenteric, hepatic, portal or cerebral territories. We report a case of paroxysmal nocturnal hemoglobinuria with renal vein thrombosis, a rare complication of this disease.

  6. A STUDY OF ANOMALIES OF LEFT RENAL VEIN

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    Namburu Bhanu Sudha Parimala

    2015-09-01

    Full Text Available Introduction: The left renal vein is preferred over the right in renal transplantation because of its longer length. It is important for the surgeons to know the course of the left renal vein and whether it is pre-aortic or not to avoid unexpected hemorrhage and even death. There are considerable no of radiological studies on Retro aortic Left Renal Vein but anatomical studies other than the Japanese were not found in the literature. In view of its anatomical, embryological, clinical and surgical importance the present study was undertaken. Materials and Methods : The present study was conducted in 60 adult cadavers (10 female and 50 male allotted to 1st M.B.B.S and M.D P.G students at Pinnamaneni Siddhartha institute of medical sciences & research foundation Gannavaram & N.R.I. Academy of Medical Sciences, Andhra Pradesh, India for routine dissection over a period of 5 consecutive years (2010-2015. Results: Left Renal Vein anomalies can be classified into 4 types in the literature.Type1 is the most common in its occurrence followed by type 3,2and 4.Type 4 was rarely reported .In the present study the percentage of incidence of type 1, type 2 and type3 are 6.6%,1.6%,3.3% respectively and type 4 was not observed. Conclusion: Knowing the variable expressions of the renal venous system allows better understanding of the clinical events. Pre operative CT can be considered mandatory as it helps in safe surgical outcome particularly in the retro peritoneal area.

  7. Multiple extra macular branch retinal vein occlusions in hyperhomocysteinemia

    Directory of Open Access Journals (Sweden)

    Abhijit Diwakar Gore

    2014-01-01

    Full Text Available Hyperhomocysteinemia is a well-known modifiable risk factor for thromboembolism. Retinal vascular occlusion in patients having hyperhomocysteinemia is a known entity, particularly in young patients. However, multiple extra macular branch retinal vein occlusion (BRVO is a rare condition, which can be a presentation of this disease. We present a patient who had multiple extra macular BRVO; on complete systemic workup, he was found to have raised homocysteine levels.

  8. Etiology and portal vein thrombosis in Budd-Chiari syndrome

    Institute of Scientific and Technical Information of China (English)

    Oguz Uskudar; Meral Akdogan; Nurgul Sasmaz; Sevinc Yilmaz; Muharrem Tola; Burhan Sahin

    2008-01-01

    AIM: To research the etiology, portal vein thrombosis and other features of Budd-Chiari syndrome (BCS)patients prospectively.METHODS: A total of 75 patients (40 female, 35 male) who were diagnosed between January 2002 and July 2004 as having BCS were studied prospectively.Findings from on physical examination, ultrasonography,duplex ultrasonography and venography were analyzed.Hemogram and blood chemistry were studied at the time of diagnosis and on each hospital visit. Bone marrow examination and immune phenotyping were performed by a hematologist when necessary. Protein C, S, antithrombin Ⅲ, activated protein C resistance,and anticardiolipin antibodies, antinuclear antibodies,and anti ds-DNA were studied twice. The presence of ascite, esophageal varices, and portal thrombosis were evaluated at admission and on every visit.RESULTS: At least one etiological factor was determined in 54 (72%) of the patients. The etiology could not be defined in 21 (28%) patients. One etiological factor was found in 39, 2 factors in 14 and 3 factors in 1 patient.The most common cause was the web (16%), the second was Hydatid disease (11%), the third was Behcet's disease (9%). Portal vein thrombosis was present in 11 patients and at least one etiology was identified in 9 of them (82%).CONCLUSION: Behcet's disease and hydatid disease are more prominent etiological factors in Turkey than in other countries. Patients with web have an excellent response to treatment without signs of portal vein thrombosis while patients having thrombofilic factors more than one are prone to develop portal vein thrombosis with worse clinical outcome.

  9. Adherence of human basophils to cultured umbilical vein endothelial cells.

    OpenAIRE

    1988-01-01

    The mechanism by which circulating human basophils adhere to vascular endothelium and migrate to sites of allergic reactions is unknown. Agents have been identified which stimulate the adherence of purified basophils to cultured human umbilical vein vascular endothelial cells (HuVEC). Treatment of HuVEC with interleukin 1, tumor necrosis factor (TNF), bacterial endotoxin, and 12-O-tetradecanoylphorbol-13-acetate (TPA) resulted in time and dose-dependent increases of adhesiveness for basophils...

  10. Presentation of acute central retinal vein occlusion in scleroderma

    OpenAIRE

    Malik, Faisal; Al Habash, Ahmed

    2014-01-01

    Central retinal vein occlusion (CRVO) is a rare complication of scleroderma. Here we report a case of a 30-year-old man who was diagnosed to have scleroderma in the rheumatology and dermatology clinic. During treatment with systemic steroids and immunosuppressive therapy the patient developed a sudden decrease of vision in the right eye and was diagnosed to have right CRVO with macular edema on fundus examination. After three consecutive Intravitreal bevacizumab (IVB) injections for macular e...

  11. Palm Vein Verification Using Multiple Features and Locality Preserving Projections

    OpenAIRE

    Ali Mohsin Al-juboori; Wei Bu; Xiangqian Wu; Qiushi Zhao

    2014-01-01

    Biometrics is defined as identifying people by their physiological characteristic, such as iris pattern, fingerprint, and face, or by some aspects of their behavior, such as voice, signature, and gesture. Considerable attention has been drawn on these issues during the last several decades. And many biometric systems for commercial applications have been successfully developed. Recently, the vein pattern biometric becomes increasingly attractive for its uniqueness, stability, and noninvasiven...

  12. Analysis of the hand vein pattern for people recognition

    Science.gov (United States)

    Castro-Ortega, R.; Toxqui-Quitl, C.; Cristóbal, G.; Marcos, J. Victor; Padilla-Vivanco, A.; Hurtado Pérez, R.

    2015-09-01

    The shape of the hand vascular pattern contains useful and unique features that can be used for identifying and authenticating people, with applications in access control, medicine and financial services. In this work, an optical system for the image acquisition of the hand vascular pattern is implemented. It consists of a CCD camera with sensitivity in the IR and a light source with emission in the 880 nm. The IR radiation interacts with the desoxyhemoglobin, hemoglobin and water present in the blood of the veins, making possible to see the vein pattern underneath skin. The segmentation of the Region Of Interest (ROI) is achieved using geometrical moments locating the centroid of an image. For enhancement of the vein pattern we use the technique of Histogram Equalization and Contrast Limited Adaptive Histogram Equalization (CLAHE). In order to remove unnecessary information such as body hair and skinfolds, a low pass filter is implemented. A method based on geometric moments is used to obtain the invariant descriptors of the input images. The classification task is achieved using Artificial Neural Networks (ANN) and K-Nearest Neighbors (K-nn) algorithms. Experimental results using our database show a percentage of correct classification, higher of 86.36% with ANN for 912 images of 38 people with 12 versions each one.

  13. Blood vessel classification into arteries and veins in retinal images

    Science.gov (United States)

    Kondermann, Claudia; Kondermann, Daniel; Yan, Michelle

    2007-03-01

    The prevalence of diabetes is expected to increase dramatically in coming years; already today it accounts for a major proportion of the health care budget in many countries. Diabetic Retinopathy (DR), a micro vascular complication very often seen in diabetes patients, is the most common cause of visual loss in working age population of developed countries today. Since the possibility of slowing or even stopping the progress of this disease depends on the early detection of DR, an automatic analysis of fundus images would be of great help to the ophthalmologist due to the small size of the symptoms and the large number of patients. An important symptom for DR are abnormally wide veins leading to an unusually low ratio of the average diameter of arteries to veins (AVR). There are also other diseases like high blood pressure or diseases of the pancreas with one symptom being an abnormal AVR value. To determine it, a classification of vessels as arteries or veins is indispensable. As to our knowledge despite the importance there have only been two approaches to vessel classification yet. Therefore we propose an improved method. We compare two feature extraction methods and two classification methods based on support vector machines and neural networks. Given a hand-segmentation of vessels our approach achieves 95.32% correctly classified vessel pixels. This value decreases by 10% on average, if the result of a segmentation algorithm is used as basis for the classification.

  14. Colloidal gold and silica in mesothermal vein systems

    Science.gov (United States)

    Herrington, R. J.; Wilkinson, J. J.

    1993-06-01

    Some of the textural features of mesothermal gold-quartz veins may be best explained by the initial precipitation of amorphous silica gel (colloid), which subsequently crystallizes to quartz. This can occur in brittle-ductile shear zones where a significant fluid-pressure drop occurs during stick-slip failure. Such a process rapidly supersaturates the hydrothermal fluid with respect to amorphous silica, which precipitates instead of quartz, owing to favorable kinetics. Depressurization also commonly leads to fluid unmixing and destabilization of soluble gold complexes. However, the presence of colloidal silica can stabilize gold colloid, allowing further transport of particulate gold in suspension in the hydrothermal fluid. Silica gel would be highly unstable under mesothermal conditions and would undergo rapid syneresis and crystallization to form quartz; solid impurities would tend to be expelled toward grain boundaries. This model can account for the primary anhedral aggregate textures typical of mesothermal quartz veins, the concentration of gold along grain boundaries and the formation of discrete gold nuggets, and the rare occurrence of low-order silica polymorphs and relict spheroidal structures. The transport of gold in colloidal form may be one reason for the frequently consistent bulk grade distribution in gold-quartz vein systems over many hundreds of metres (in some cases kilometres) of depth. In addition, the formation of charged colloidal particles may help to explain the attraction of gold grains to specific mineral surfaces.

  15. Extracorporeal shock waves as curative therapy for varicose veins?

    Directory of Open Access Journals (Sweden)

    Fiorenzo Angehrn

    2008-03-01

    Full Text Available Fiorenzo Angehrn1, Christoph Kuhn1, Ortrud Sonnabend2, Axel Voss31Klinik Piano, Biel, Switzerland; 2Pathodiagnostics, Herisau, Switzerland; 3SwiTech Medical AG, Kreuzlingen, SwitzerlandAbstract: In this prospective design study the effects of low-energy partially focused extracorporeal generated shock waves (ESW onto a subcutaneous located varicose vein – left vena saphena magna (VSM – are investigated. The treatment consisted of 4 ESW applications within 21 days. The varicose VSM of both sides were removed by surgery, and samples analyzed comparing the treated and untreated by means of histopathology. No damage to the treated varicose vein in particular and no mechanical destruction to the varicose vein’s wall could be demonstrated. However, an induction of neo-collagenogenesis was observed. The thickness of the varicose vein’s wall increased. Optimization of critical application parameters by investigating a larger number of patients may turn ESW into a non-invasive curative varicose treatment.Keywords: curative therapy, extra-cellular matrix (ECM, histopathologic changes of varicose veins, extracorporeal shock wave (ESW, progenitor cells

  16. Thrombosis of the great cerebral vein in a hemodialysis patient.

    Science.gov (United States)

    Ratkovic, Marina; Basic-Jukic, Nikolina; Gledovic, Branka; Radunovic, Danilo

    2014-01-01

    Cerebral venous thrombosis is a rare condition with various clinical presentations which may delay diagnosis. It is frequently associated with severe consequences. We present the first documented case of thrombosis of the great cerebral vein in a hemodialysis patient. A 29-year-old female patient with end-stage renal disease of unknown etiology was admitted to a hospital with altered consciousness and nausea. Severe headache in the right parietal area had started 2 days before. On examination, she was in the poor overall condition, dysartric, with a severe nystagmus. Urgent brain multislice computerized tomography and magnetic resonance imaging revealed thrombosis of the great cerebral vein with hypodense zones in hypothalamus, thalamus and basal ganglia. She was treated with heparin bolus of 25000 IU with a favorable outcome. Detailed examination demonstrated increased lupus anticoagulant (LA) 1 and LA2 and increased LA1/LA2. Control magnetic resonance imaging performed 1 year later revealed multiple vascular lesions within the brain. Acetylsalicylate was introduced in therapy. Thrombosis of the cerebral veins should be suspected in patients with end-stage renal disease, altered neurological status and signs of increased intracranial pressure.

  17. [Portal vein thrombosis in patients with thrombophilia--own observations].

    Science.gov (United States)

    Swiatkowska-Stodulska, Renata; Kazimierska, Ewa; Weyer-Hepka, Jolanta; Dworakowska, Dorota; Lubińska, Monika; Gnacińska, Maria; Bakowska, Alicja; Czestochowska, Eugenia

    2005-04-01

    Portal vein thrombosis is one of the main prehepatic causes of portal hypertension. The most frequent causes of thrombosis in this localization, apart from hepatic cirrhosis, are the following: acute inflammatory diseases and abdominal cancers, traumas, proliferative diseases of the hematopoietic system. In recent years attention was given to disorders in hemostasis, such as thrombophilia, in the course of which thrombosis development is particularly common. The authors present 10 patients after an incident of portal vein thrombosis, in which primary hepatic pathology was excluded and tests directed at thrombophilia were performed. In seven patients abnormalities in the examined parameters were found, and what is more, in two cases they had a complex character and involved more than one parameter. In five patients hyperhomocysteinemia was found. Among them, in two patients there was also a decreased protein S activity and in one of them there was also APC-resistance. In the next two patients there were abnormalities in one of the examined parameters - APC-resistance. Hyperhomocysteinemia was found in all patients with idiopathic thrombosis, and in one of them there were concurrent changes in protein S activity and APC-resistance. In patients with the history of portal vein thrombosis diagnostics of thrombophilia should be performed.

  18. Face Veins Based MCMT Technique for Personal Identification

    Directory of Open Access Journals (Sweden)

    Kamta Nath Mishra

    2015-08-01

    Full Text Available Face veins based personal identification is a challenging task in the field of identity verification of a person. It is because many other techniques are not identifying the uniqueness of a person in the universe. This research paper finds the uniqueness of a person on the basis of face veins based technique. In this paper five different persons face veins images have been used with different rotation angles (left/right 900 to 2700 and 3150 . For each person, eight different images at different rotations were used and for each of these images the same minimum cost minutiae tree (MCMT is obtained. Here, Prim‟s or Kruskal‟s algorithm is used for finding the MCMT from a minutiae graph. The MCMT is traversed in pre-order to generate the unique string of vertices and edge lengths. We deviated the edge lengths of each MCMT by five pixels in positive and negative directions for robustness testing. It is observed in our experiments that the traversed string which consists of vertices and edge lengths of MCMT is unique for each person and this unique sequence is correctly identifying a person with an accuracy of above 95%. Further, we have compared the performance of our proposed technique with other standard techniques and it is observed that the proposed technique is giving the promising result.

  19. Natural fracking and the genesis of five-element veins

    Science.gov (United States)

    Markl, Gregor; Burisch, Mathias; Neumann, Udo

    2016-08-01

    Hydrothermal Ag-Co-Ni-Bi-As (five-element vein type) ore deposits show very conspicuous textures of the native elements silver, bismuth, and arsenic indicating formation from a rapid, far-from-equilibrium process. Such textures include up to dm-large tree- and wire-like aggregates overgrown by Co-Ni-Fe arsenides and mostly carbonates. Despite the historical and contemporary importance of five-element vein type deposits as sources of silver, bismuth, and cobalt, and despite of spectacular museum specimens, their process of formation is not yet understood and has been a matter of debate since centuries. We propose, based on observations from a number of classical European five-element vein deposits and carbon isotope analyses, that "natural fracking," i.e., liberation of hydrocarbons or hydrocarbon-bearing fluids during break up of rocks in the vicinity of an active hydrothermal system and mixing between these hydrocarbons (e.g., methane and/or methane-bearing fluids) and a metal-rich hydrothermal fluid is responsible for ore precipitation and the formation of the unusual ore textures and assemblages. Thermodynamic and isotope mixing calculations show that the textural, chemical, and isotopic features of the investigated deposits can entirely be explained by this mechanism.

  20. Sequential saphenous vein grafting combined with selective arterialization of middle cardiac vein during off-pump coronary artery bypass surgery

    Institute of Scientific and Technical Information of China (English)

    YU Yang; QI Dan-ni; GU Cheng-xiong

    2010-01-01

    @@ Currently coronary artery bypass grafting (CABG) is the most commonly used procedure for revascularization of coronary heart disease. However it may not be suitable for the patients with diffuse coronary artery diseases. Under this circumstance, retrograde perfusion via cardiac venous system, namely retrograde coronary venous bypass graft (CVBG), may be the proper therapeutic selection.1 The idea of myocardial revascularization by means of grafting the coronary venous system is more than a century old. However, few clinical trials and long-term outcome data have been presented. The use of venous arterialization has not been widely used. We report the use of a sequential saphenous vein graft from the aorta to middle cardiac vein in a patient with diffuse lesions in right coronary artery during off-pump coronary artery bypass surgery (OPCAB).

  1. The response of thrombosis in the portal vein or hepatic vein in hepatocellular carcinoma to radiation therapy

    Energy Technology Data Exchange (ETDEWEB)

    Bae, Bong Kyung; Kim, Jae Chul [Dept. of Radiation Oncology, Kyungpook National University School of Medicine, Daegu (Korea, Republic of)

    2016-09-15

    The purpose of current study is to evaluate the response of the patients with portal vein thrombosis (PVT) or hepatic vein thrombosis (HVT) in hepatocellular carcinoma (HCC) treated with three-dimensional conformal radiation therapy (3D-CRT). In addition, survival of patients and potential prognostic factors of the survival was evaluated. Forty-seven patients with PVT or HVT in HCC, referred to our department for radiotherapy, were retrospectively reviewed. For 3D-CRT plans, a gross tumor volume (GTV) was defined as a hypodense filling defect area in the portal vein (PV) or hepatic vein (HV). Survival of patients, and response to radiation therapy (RT) were analyzed. Potential prognostic factors for survival and response to RT were evaluated. The median survival time of 47 patients was 8 months, with 1-year survival rate of 15% and response rate of 40%. Changes in Child-Pugh score, response to RT, Eastern cooperative oncology group performance status (ECOG PS), hepatitis C antibody (HCVAb) positivity, and additional post RT treatment were statistically significant prognostic factors for survival in univariate analysis (p = 0.000, p = 0.018, p = 0.000, p = 0.013, and p = 0.047, respectively). Of these factors, changes in Child-Pugh score, and response to RT were significant for patients' prognosis in multivariate analysis (p = 0.001 and p = 0.035, respectively). RT could constitute a reasonable treatment option for patients with PVT or HVT in HCC with acceptable toxicity. Changes in Child-Pugh score, and response to RT were statistically significant factors of survival of patients.

  2. Image Registration of Cone-Beam Computer Tomography and Preprocedural Computer Tomography Aids in Localization of Adrenal Veins and Decreasing Radiation Dose in Adrenal Vein Sampling

    NARCIS (Netherlands)

    Busser, W.M.H.; Arntz, M.; Jenniskens, S.F.M.; Deinum, J.; Hoogeveen, Y.L.; Lange, F. de; Schultze Kool, L.J.

    2015-01-01

    We assessed whether image registration of cone-beam computed tomography (CT) (CBCT) and contrast-enhanced CT (CE-CT) images indicating the locations of the adrenal veins can aid in increasing the success rate of first-attempts adrenal vein sampling (AVS) and therefore decreasing patient radiation do

  3. Conventional surgery and endovenous laser ablation of recurrent varicose veins of the small saphenous vein: a retrospective clinical comparison and assessment of patient satisfaction.

    NARCIS (Netherlands)

    Groenendael, L. van; Flinkenflogel, L.; Vliet, J.A. van der; Roovers, E.A.; Sterkenburg, S.M. van; Reijnen, M.M.P.J.

    2010-01-01

    OBJECTIVES: Recurrences of varicosities of the small saphenous vein (SSV) are common. Surgical reintervention is associated with increased complication rates. The aim of the study was to assess the feasibility of endovenous laser ablation (EVLA) in recurrent varicose veins of the SSV and to compare

  4. Embolization of Incompetent Pelvic Veins for the Treatment of Recurrent Varicose Veins in Lower Limbs and Pelvic Congestion Syndrome

    Energy Technology Data Exchange (ETDEWEB)

    Meneses, Luis, E-mail: lmeneseq@gmail.com; Fava, Mario; Diaz, Pia; Andia, Marcelo [Pontificia Universidad Catolica de Chile, Radiology Department and Biomedical Imaging Center (Chile); Tejos, Cristian; Irarrazabal, Pablo [Pontificia Universidad Catolica de Chile, Biomedical Imaging Center (Chile); Uribe, Sergio, E-mail: suribe@med.puc.cl [Pontificia Universidad Catolica de Chile, Radiology Department and Biomedical Imaging Center (Chile)

    2013-02-15

    We present our experience with embolization of incompetent pelvic veins (IPV) in women with recurrence of varicose veins (VV) in lower limbs, as well as symptoms of pelvic congestion syndrome (PCS), after first surgery. In addition, we evaluated the effects of embolization in decreasing the symptoms of VV before surgery as well as its effects on PCS symptoms. We included 10 women who had consulted a vascular surgeon because of recurrent VV in lower limbs after surgery. All of these patients were included in the study because they also had symptoms of PCS, probably due to IPV. In patients who had confirmed IPV, we performed embolization before a second surgery. VV and PCS were assessed before and at 3 months after embolization (before the second surgery) using a venous clinical severity score (VCSS) and a visual analog pain scale (VAS), respectively. Patients were controlled between 3 and 6 months after embolization. Paired Student t test analysis was used for comparing data before and after embolization. Fifteen vein segments in 10 women were suitable for embolization. There was a significant (p < 0.001) decrease of VCSS after embolization, and recurrence of VV was not detected within a period of 6 months. There was also significant (p < 0.01) relief of chronic pelvic pain related to PCS evaluated using VAS at 3 months after embolization. Embolization decreases the risk of VV recurrence after surgery and also improves PCS symptoms in women with VV in lower limbs and IPV.

  5. Complex left profunda femoris vein to renal vein bypass for the management of progressive chronic iliofemoral occlusion.

    Science.gov (United States)

    Anaya-Ayala, Javier E; Adams, Matthew K; Telich-Tarriba, Jose E; Dresser, Kelly L; Ismail, Nyla; Peden, Eric K

    2013-01-01

    Chronic occlusions of the inferior vena cava (IVC) and iliofemoral veins are long-term sequelae of deep venous thrombosis (DVT) that can lead to postthrombotic syndrome (PTS). Patients may present with a wide spectrum of signs and symptoms, ranging from mild discomfort and swelling to severe venous hypertension and ulcerations. We report a 68-year-old man who had a history of left lower extremity DVT after a laminectomy and who developed PTS with nonhealing ulcers. The patient underwent a cross-pubic femorofemoral venous bypass that failed to improve his clinical status. After unsuccessful endovascular attempts for recanalization of the iliofemoral segment, a profunda femoris to IVC bypass was performed. The symptoms recurred 2 years later. Venography revealed restenosis at the caval anastomosis that did not resolve by endovascular means. A surgical revision was performed, and given the quality of the IVC, a jump bypass was created to the left renal vein. The swelling improved and the ulcers healed completely. Twenty-eight months after the complex reconstructions, he remains ulcer-free with mild edema controlled with stockings. Venous reconstructions remain a viable option for patients with symptomatic and recalcitrant nonmalignant obstruction of the large veins.

  6. Computer-assisted diagnostic tool to quantify the pulmonary veins in sickle cell associated pulmonary hypertension

    Science.gov (United States)

    Jajamovich, Guido H.; Pamulapati, Vivek; Alam, Shoaib; Mehari, Alem; Kato, Gregory J.; Wood, Bradford J.; Linguraru, Marius George

    2012-03-01

    Pulmonary hypertension is a common cause of death among patients with sickle cell disease. This study investigates the use of pulmonary vein analysis to assist the diagnosis of pulmonary hypertension non-invasively with CT-Angiography images. The characterization of the pulmonary veins from CT presents two main challenges. Firstly, the number of pulmonary veins is unknown a priori and secondly, the contrast material is degraded when reaching the pulmonary veins, making the edges of these vessels to appear faint. Each image is first denoised and a fast marching approach is used to segment the left atrium and pulmonary veins. Afterward, a geodesic active contour is employed to isolate the left atrium. A thinning technique is then used to extract the skeleton of the atrium and the veins. The locations of the pulmonary veins ostia are determined by the intersection of the skeleton and the contour of the atrium. The diameters of the pulmonary veins are measured in each vein at fixed distances from the corresponding ostium, and for each distance, the sum of the diameters of all the veins is computed. These indicators are shown to be significantly larger in sickle-cell patients with pulmonary hypertension as compared to controls (p-values < 0.01).

  7. Ore mineralogy and textural zonation in the world-class epithermal Waihi Vein System, Hauraki Goldfield

    Science.gov (United States)

    Mauk, Jeffrey L.; Skinner, Erin G; Fyfe, Sarah J; Menzies, Andrew H; Lowers, Heather A.; Koenig, Alan E.

    2016-01-01

    The Waihi district in the Hauraki Goldfield of New Zealand contains adularia-sericite epithermal gold-silver veins that have produced more than 7.7 Moz gold. The outermost veins of the district (Martha, Favona, Moonlight, and Cowshed) contain abundant colloform, cherty, and black quartz fill textures, with minor crustiform and massive quartz. The central veins (Amaranth, Trio, and Union) contain predominantly massive and crustiform textures, and these veins are also commonly coarser grained than outermost veins. Pyrite, sphalerite, galena, chalcopyrite, electrum, and acanthite occur in both outermost and central veins; base metal sulfide minerals typically increase in abundance in deeper samples. Antimony-, arsenic-, and selenium-bearing minerals are most abundant in the Favona and Moonlight veins, whereas base metal sulfide minerals are more abundant in the central veins at Correnso. Throughout the Waihi vein system, electrum is by far the most widespread, abundant, and significant gold-bearing mineral, but LA-ICP-MS analyses show that arsenian pyrite also contains some gold. Mineralogical and textural data are consistent with the central veins forming at a deeper structural level, or from hydrothermal fluids with different chemistry, or both.

  8. Surgical Implications of Portal Vein Variations and Liver Segmentations: A Recent Update.

    Science.gov (United States)

    Iqbal, Showkathali; Iqbal, Raiz; Iqbal, Faiz

    2017-02-01

    The Couinaud's liver segmentation is based on the identification of portal vein bifurcation and origin of hepatic veins. It is widely used clinically, because it is better suited for surgery and is more accurate in localizing and monitoring various intra parenchymal lesions. According to standard anatomy, the portal vein bifurcates into right and left branches; the left vein drains segment II, III and IV and the right vein divides into two secondary branches - the anterior portal vein drains segments V and VIII, and the posterior drains segments VI and VII. The portal vein variants such as portal trifurcation, with division of the main portal vein into the left, right anterior, and posterior branches, and the early origin of the right posterior branch directly from the main portal vein were found to be more frequent and was seen in about 20 - 35% of the population. Accurate knowledge of the portal variants and consequent variations in vascular segments are essential for intervention radiologists and transplant surgeons in the proper diagnosis during radiological investigations and in therapeutic applications such as preparation for biopsy, Portal Vein Embolization (PVE), Transjugular Intrahepatic Porto-Systemic Shunt (TIPS), tumour resection and partial hepatectomy for split or living donor transplantations. The advances in the knowledge will reduce intra and postoperative complications and avoid major catastrophic events. The purpose of the present review is to update the normal and variant portal venous anatomy and their implications in the liver segmentations, complex liver surgeries and various radiological intervention procedures.

  9. The Role of Pulmonary Veins in Cancer Progression from a Computed Tomography Viewpoint

    Science.gov (United States)

    Chang, Hung; Liao, Tzu-Yao; Wen, Ming-Sheng; Yu, Chih-Teng

    2016-01-01

    Background. We studied the role of pulmonary veins in cancer progression using computed tomography (CT) scans. Methods. We obtained data from 260 patients with pulmonary vein obstruction syndrome (PVOS). We used CT scans to investigate pulmonary lesions in relation to pulmonary veins. We divided the lesions into central and peripheral lesions by their anatomical location: in the lung parenchymal tissue or pulmonary vein; in the superior or inferior pulmonary vein; and by unilateral or bilateral presence in the lungs. Results. Of the 260 PVOS patients, 226 (87%) had central lesions, 231 (89%) had peripheral lesions, and 190 (75%) had mixed central and peripheral lesions. Among the 226 central lesions, 93% had lesions within the superior pulmonary vein, either bilaterally or unilaterally. Among the 231 peripheral lesions, 65% involved bilateral lungs, 70% involved lesions within the inferior pulmonary veins, and 23% had obvious metastatic extensions into the left atrium. All patients exhibited nodules within their pulmonary veins. The predeath status included respiratory failure (40%) and loss of consciousness (60%). Conclusion. CT scans play an important role in following tumor progression within pulmonary veins. Besides respiratory distress, PVOS cancer cells entering centrally can result in cardiac and cerebral events and loss of consciousness or can metastasize peripherally from the pulmonary veins to the lungs.

  10. Portal flow into the liver through veins at the site of biliary-enteric anastomosis.

    Science.gov (United States)

    Hashimoto, M; Heianna, J; Yasuda, K; Tate, E; Watarai, J; Shibata, S; Sato, T; Yamamoto, Y

    2005-07-01

    The aim of this study was to establish the role played by jejunal veins in hepatopetal flow after biliary-enteric anastomosis and to evaluate the helical CT features of hepatopetal flow through the anastomosis. We retrospectively analyzed helical CT images of the liver in 31 patients with biliary-enteric anastomosis who underwent hepatic angiography with (n=13) or without (n=18) CT arterial portography within 2 weeks of the CT examination during the last 4 years. Arterial portography showed hepatopetal flow through small vessels located (communicating veins) between the elevated jejunal veins and the intrahepatic portal branches in two (9%) of 22 patients with a normal portal system. Helical CT showed focal parenchymal enhancement around the anastomosis in these two patients. All nine patients with extrahepatic portal vein occlusion (100%) had hepatopetal flow through the anastomosis, and four of the nine had decreased portal flow. CT revealed small communicating veins in two of these four patients. In five patients with normal portal perfusion despite extrahepatic portal vein occlusion, CT detected dilated communicating veins and elevated jejunal veins. The presence of communicating veins and/or focal parenchymal enhancement around the anastomosis indicates hepatopetal flow through the elevated jejunal veins.

  11. Influence of thrombophlebitis on TGF-β1 and its signaling pathway in the vein wall

    Directory of Open Access Journals (Sweden)

    Radoslaw Kowalewski

    2010-04-01

    Full Text Available Extensive extracellular matrix remodeling of the vein wall is involved in varicose veins pathogenesis. Thisprocess is controlled by numerous factors, including peptide growth factors. The aim of the study was to evaluate influenceof thrombophlebitis on TGF-β1 and its signaling pathway in the vein wall. TGF-β1 mRNAlevels, growth factor content andits expression were evaluated by RT-PCR, ELISA, and western blot methods, respectively, in the walls of normal veins, varicoseveins and varicose veins complicated by thrombophlebitis. Western blot analysis was used to assess TGF-β receptortype II (TGF-β RII and p-Smad2/3 protein expression in the investigated material. Unchanged mRNA levels of TGF-β1,decreased TGF-β1 content, as well as decreased expression of latent and active forms of TGF-β1 were found in varicoseveins. Increased expression of TGF-β RII and p-Smad2/3 were found in varicose veins. Thrombophlebitis led to increasedprotein expression of the TGF-β1 active form and p-Smad2/3 in the vein wall compared to varicose veins. TGF-β1 may playa role in the disease pathogenesis because of increased expression and activation of its receptor in the wall of varicose veins.Thrombophlebitis accelerates activation of TGF-β1 and activity of its receptor in the varicose vein wall.

  12. Decreased PGE₂ content reduces MMP-1 activity and consequently increases collagen density in human varicose vein.

    Directory of Open Access Journals (Sweden)

    Ingrid Gomez

    Full Text Available Varicose veins are elongated and dilated saphenous veins. Despite the high prevalence of this disease, its pathogenesis remains unclear.In this study, we investigated the control of matrix metalloproteinases (MMPs expression by prostaglandin (PGE₂ during the vascular wall remodeling of human varicose veins.Varicose (small (SDv and large diameter (LDv and healthy saphenous veins (SV were obtained after surgery. Microsomal and cytosolic PGE-synthases (mPGES and cPGES protein and mRNA responsible for PGE₂ metabolism were analyzed in all veins. cPGES protein was absent while its mRNA was weakly expressed. mPGES-2 expression was similar in the different saphenous veins. mPGES-1 mRNA and protein were detected in healthy veins and a significant decrease was found in LDv. Additionally, 15-hydroxyprostaglandin dehydrogenase (15-PGDH, responsible for PGE₂ degradation, was over-expressed in varicose veins. These variations in mPGES-1 and 15-PGDH density account for the decreased PGE₂ level observed in varicose veins. Furthermore, a significant decrease in PGE₂ receptor (EP4 levels was also found in SDv and LDv. Active MMP-1 and total MMP-2 concentrations were significantly decreased in varicose veins while the tissue inhibitors of metalloproteinases (TIMP -1 and -2, were significantly increased, probably explaining the increased collagen content found in LDv. Finally, the MMP/TIMP ratio is restored by exogenous PGE₂ in varicose veins and reduced in presence of an EP4 receptor antagonist in healthy veins.In conclusion, PGE₂ could be responsible for the vascular wall thickening in human varicose veins. This mechanism could be protective, strengthening the vascular wall in order to counteract venous stasis.

  13. LOCALIZATION OF PALM DORSAL VEIN PATTERN USING IMAGE PROCESSING FOR AUTOMATED INTRA-VENOUS DRUG NEEDLE INSERTION

    OpenAIRE

    Mrs. Kavitha. R,; Tripty Singh

    2011-01-01

    Vein pattern in palms is a random mesh of interconnected and inter- wining blood vessels. This project is the application of vein detection concept to automate the drug delivery process. It dealswith extracting palm dorsal vein structures, which is a key procedure for selecting the optimal drug needle insertion point. Gray scale images obtained from a low cost IR-webcam are poor in contrast, and usually noisy which make an effective vein segmentation a great challenge. Here a new vein image s...

  14. Ultrastructure of dragonfly wing veins: composite structure of fibrous material supplemented by resilin.

    Science.gov (United States)

    Appel, Esther; Heepe, Lars; Lin, Chung-Ping; Gorb, Stanislav N

    2015-10-01

    Dragonflies count among the most skilful of the flying insects. Their exceptional aerodynamic performance has been the subject of various studies. Morphological and kinematic investigations have showed that dragonfly wings, though being rather stiff, are able to undergo passive deformation during flight, thereby improving the aerodynamic performance. Resilin, a rubber-like protein, has been suggested to be a key component in insect wing flexibility and deformation in response to aerodynamic loads, and has been reported in various arthropod locomotor systems. It has already been found in wing vein joints, connecting longitudinal veins to cross veins, and was shown to endow the dragonfly wing with chordwise flexibility, thereby most likely influencing the dragonfly's flight performance. The present study revealed that resilin is not only present in wing vein joints, but also in the internal cuticle layers of veins in wings of Sympetrum vulgatum (SV) and Matrona basilaris basilaris (MBB). Combined with other structural features of wing veins, such as number and thickness of cuticle layers, material composition, and cross-sectional shape, resilin most probably has an effect on the vein's material properties and the degree of elastic deformations. In order to elucidate the wing vein ultrastructure and the exact localisation of resilin in the internal layers of the vein cuticle, the approaches of bright-field light microscopy, wide-field fluorescence microscopy, confocal laser-scanning microscopy, scanning electron microscopy and transmission electron microscopy were combined. Wing veins were shown to consist of up to six different cuticle layers and a single row of underlying epidermal cells. In wing veins of MBB, the latter are densely packed with light-scattering spheres, previously shown to produce structural colours in the form of quasiordered arrays. Longitudinal and cross veins differ significantly in relative thickness of exo- and endocuticle, with cross veins

  15. A Retrospective Study of Preferable Alternative Route to Right Internal Jugular Vein for Placing Tunneled Dialysis Catheters: Right External Jugular Vein versus Left Internal Jugular Vein.

    Directory of Open Access Journals (Sweden)

    Pei Wang

    Full Text Available Right internal jugular vein (IJV is a preferred access route for tunneled (cuffed dialysis catheters (TDCs, and both right external jugular vein (EJV and left IJV are alternative routes for patients in case the right IJV isn't available for TDC placement. This retrospective study aimed to determine if a disparity exists between the two alternative routes in hemodialysis patients in terms of outcomes of TDCs.49 hemodialysis patients who required TDCs through right EJV (n = 21 or left IJV (n = 28 as long-term vascular access were included in this study. The primary end point was cumulative catheter patency. Secondary end points include primary catheter patency, proportion of patients that never required urokinase and incidence of catheter-related bloodstream infections (CRBSI.A total of 20,870 catheter-days were evaluated and the median was 384 (interquartile range, 262-605 catheter-days. Fewer catheters were removed in the right EJV group than in the left IJV group (P = 0.007. Mean cumulative catheter patency was higher in the right EJV group compared with the left IJV group (P = 0.031. There was no significant difference between the two groups in the incidence of CRBSI, primary catheter patency or proportion of patients that never required urokinase use. Total indwell time of antecedent catheters was identified as an independent risk factor for cumulative catheter patency by Cox regression hazards test with an HR of 2.212 (95% CI, 1.363-3.588; p = 0.001.Right EJV might be superior to left IJV as an alternative insertion route for TDC placement in hemodialysis patients whose right IJVs are unavailable.

  16. Primary Iliac Venous Leiomyosarcoma: A Rare Cause of Deep Vein Thrombosis in a Young Patient

    Directory of Open Access Journals (Sweden)

    Nelson Oliveira

    2011-01-01

    Full Text Available Introduction. Primary venous tumours are a rare cause of deep vein thrombosis. The authors present a case where the definitive diagnosis was delayed by inconclusive complementary imaging. Clinical Case. A thirty-seven-year-old female presented with an iliofemoral venous thrombosis of the right lower limb. The patient had presented with an episode of femoral-popliteal vein thrombosis five months before and was currently under anticoagulation. Phlegmasia alba dolens installed progressively, as thrombus rapidly extended to the inferior vena cava despite systemic thrombolysis and anticoagulation. Diagnostic imaging failed to identify the underlying aetiology of the deep vein thrombosis. The definitive diagnosis of primary venous leiomyosarcoma was reached by a subcutaneous abdominal wall nodule biopsy. Conclusion. Primary venous leiomyosarcoma of the iliac vein is a rare cause of deep vein thrombosis, which must be considered in young patients with recurrent or refractory to treatment deep vein thrombosis.

  17. Atresia of the bilateral pulmonary veins: a rare and dismal anomaly identified on cardiac CT

    Energy Technology Data Exchange (ETDEWEB)

    Goo, Hyun Woo; Park, Sang-Hyub; Koo, Hyun Jung; Cho, Young Hoon; Lee, Eunsol [University of Ulsan College of Medicine, Asan Medical Center, Department of Radiology and Research Institute of Radiology, Seoul (Korea, Republic of)

    2014-08-15

    Imaging findings of bilateral pulmonary vein atresia have not been described. To describe cardiac CT findings and clinical outcomes of bilateral pulmonary vein atresia. Three newborns with bilateral pulmonary vein atresia were encountered at our institution during a period of 8 years. We evaluated prenatal echocardiographic findings, clinical presentations, postnatal echocardiographic findings, chest radiographic findings, cardiac CT findings and clinical outcomes. All newborns presented immediately after birth with severe cyanosis, respiratory distress and acidosis that were unresponsive to medical management. Prenatal and postnatal echocardiographic studies and chest radiography were misleading, inconclusive or nonspecific in making the diagnosis in these children; however cardiac CT clearly demonstrated atresia of the bilateral pulmonary veins with multiple small mediastinal collateral veins and pulmonary edema. Surgical treatments were not feasible for this anomaly. Their clinical outcomes were universally dismal and all infants died within 3 days. Cardiac CT provides an accurate diagnosis of bilateral pulmonary vein atresia and leads to prompt treatment decision in these children. (orig.)

  18. Diagnostic Value of 16 Slices Spiral-CT for Portal Vein Disorders

    Institute of Scientific and Technical Information of China (English)

    李震; 胡道予; 肖明

    2004-01-01

    Summary: The diagnostic value of 16-slices spiral computed tomography (CT) for portal vein disorders was evaluated. Forty-one patients were scanned by the 16-slices spiral-CT. The celiac trunk,portal vein and their branches were reconstructed by volume rendering (VR), multiplanar volume reconstruction (MPVR) and maximum intensity projection (MIP) technique, and the results were compared with digital subtraction angiography (DSA). VR, MPVR and MIP could display celiac trunk, portal vein, inferior vena cava and their branches and extent of portal vein-vena cava shunt,portal vein emboli and the fistula of hepatic artery-portal vein. The results from 16-slices CT were better than DSA and identical with pathologic ones. The vessel three-dimension reconstruction technique of 16-slices spiral CT is valuable for evaluating the portal systemic disorders.

  19. Isolated splenic vein thrombosis secondary to splenic metastasis: A case report

    Institute of Scientific and Technical Information of China (English)

    Kunihiko Hiraiwa; Kyoei Morozumi; Hiroshi Miyazaki; Keiichi Sotome; Akio Furukawa; Makoto Nakamaru; Yoichi Tanaka; Hisami Iri

    2006-01-01

    A 49-year-old, previously healthy woman sought treatment for abdominal pain. Colonoscopy revealed ascending colon cancer. Computed tomography and angiography showed splenic metastasis and thrombosis extending from the splenic vein to the portal vein. She underwent right hemicolectomy, splenectomy, and distal pancreatomy. Histological findings showed no malignant cell in the splenic vein which was filled with organizing thrombus. We postulate the mechanism of splenic vein thrombosis in our case to be secondary to the extrinsic compression of the splenic vein by the splenic metastasis or by the inflammatory process produced by the splenic metastasis. In conclusion, we suggest that splenic metastasis should be added to the list of differential diagnosis which causes splenic vein thrombosis. In the absence of other sites of neoplastic disease, splenectomy seems to be the preferred therapy because it can be performed with low morbidity and harbors the potential for long-term survival.

  20. Primary iliac venous leiomyosarcoma: a rare cause of deep vein thrombosis in a young patient.

    Science.gov (United States)

    Oliveira, Nelson; Dias, Emanuel; Lima, Ricardo; Oliveira, Fernando; Cássio, Isabel

    2011-01-01

    Introduction. Primary venous tumours are a rare cause of deep vein thrombosis. The authors present a case where the definitive diagnosis was delayed by inconclusive complementary imaging. Clinical Case. A thirty-seven-year-old female presented with an iliofemoral venous thrombosis of the right lower limb. The patient had presented with an episode of femoral-popliteal vein thrombosis five months before and was currently under anticoagulation. Phlegmasia alba dolens installed progressively, as thrombus rapidly extended to the inferior vena cava despite systemic thrombolysis and anticoagulation. Diagnostic imaging failed to identify the underlying aetiology of the deep vein thrombosis. The definitive diagnosis of primary venous leiomyosarcoma was reached by a subcutaneous abdominal wall nodule biopsy. Conclusion. Primary venous leiomyosarcoma of the iliac vein is a rare cause of deep vein thrombosis, which must be considered in young patients with recurrent or refractory to treatment deep vein thrombosis.

  1. Case report: Varicosity of the communicating vein between the left renal vein and the left ascending lumbar vein mimicking a renal artery aneurysm: Report of an unusual site of varicose veins and a novel hypothesis to explain its association with abdominal pain

    Directory of Open Access Journals (Sweden)

    Sandeep G Jakhere

    2011-01-01

    Full Text Available A communicating vein between the left renal vein and the left ascending lumbar vein has only rarely been reported in the imaging literature. There are very few reports of varicosity of this communicating vein. Nonetheless, awareness about this communicating vein is of utmost importance for surgeons performing aortoiliac surgeries and nephrectomies as it may pose technical difficulties during surgery or cause life-threatening retroperitoneal hemorrhage. Varicosity of this venous channel may be mistaken for paraaortic lymphadenopathy, adrenal pseudo-mass, or renal artery aneurysm. We report a case of a patient with varicosity of this communicating vein, which mimicked a left renal artery aneurysm. A novel hypothesis is also proposed to explain the relationship with abdominal pain.

  2. Use of Left Gastric Vein as an Alternative for Portal Flow Reconstruction in Liver Transplantation

    Science.gov (United States)

    Goldoni, Marcos Bertozzi; Kruse, Cristine; Diedrich, João Alfredo; Giacomazzi, Caroline Becker; Negri, Estéfano Aurélio; Koop, Matheus; Sampaio, José Artur; Fontes, Paulo Roberto Ott; Waechter, Fábio Luiz

    2016-01-01

    Portal vein thrombosis is observed in up to 10% of liver transplant candidates, hindering execution of the procedure. A dilated gastric vein is an alternative to portal vein reconstruction and decompression of splanchnic bed. We present two cases of patients with portal cavernoma and dilated left gastric vein draining splanchnic bed who underwent liver transplantation. The vein was dissected and sectioned near the cardia; the proximal segment was ligated with suture and the distal segment was anastomosed to the donor portal vein. Gastroportal anastomosis is an excellent option for portal reconstruction in the presence of thrombosis or hypoplasia. It allows an adequate splanchnic drainage and direction of hepatotrophic factors to the graft. PMID:27595034

  3. Finger-vein image recognition combining modified Hausdorff distance with minutiae feature matching.

    Science.gov (United States)

    Yu, Cheng-Bo; Qin, Hua-Feng; Cui, Yan-Zhe; Hu, Xiao-Qian

    2009-12-01

    In this paper, we propose a novel method for finger-vein recognition. We extract the features of the vein patterns for recognition. Then, the minutiae features included bifurcation points and ending points are extracted from these vein patterns. These feature points are used as a geometric representation of the vein patterns shape. Finally, the modified Hausdorff distance algorithm is provided to evaluate the identification ability among all possible relative positions of the vein patterns shape. This algorithm has been widely used for comparing point sets or edge maps since it does not require point correspondence. Experimental results show that these minutiae feature points can be used to perform personal verification tasks as a geometric representation of the vein patterns shape. Furthermore, by this developed method, we can achieve robust image matching under different lighting conditions.

  4. Intensity Variation Normalization for Finger Vein Recognition Using Guided Filter Based Singe Scale Retinex.

    Science.gov (United States)

    Xie, Shan Juan; Lu, Yu; Yoon, Sook; Yang, Jucheng; Park, Dong Sun

    2015-07-14

    Finger vein recognition has been considered one of the most promising biometrics for personal authentication. However, the capacities and percentages of finger tissues (e.g., bone, muscle, ligament, water, fat, etc.) vary person by person. This usually causes poor quality of finger vein images, therefore degrading the performance of finger vein recognition systems (FVRSs). In this paper, the intrinsic factors of finger tissue causing poor quality of finger vein images are analyzed, and an intensity variation (IV) normalization method using guided filter based single scale retinex (GFSSR) is proposed for finger vein image enhancement. The experimental results on two public datasets demonstrate the effectiveness of the proposed method in enhancing the image quality and finger vein recognition accuracy.

  5. Intensity Variation Normalization for Finger Vein Recognition Using Guided Filter Based Singe Scale Retinex

    Directory of Open Access Journals (Sweden)

    Shan Juan Xie

    2015-07-01

    Full Text Available Finger vein recognition has been considered one of the most promising biometrics for personal authentication. However, the capacities and percentages of finger tissues (e.g., bone, muscle, ligament, water, fat, etc. vary person by person. This usually causes poor quality of finger vein images, therefore degrading the performance of finger vein recognition systems (FVRSs. In this paper, the intrinsic factors of finger tissue causing poor quality of finger vein images are analyzed, and an intensity variation (IV normalization method using guided filter based single scale retinex (GFSSR is proposed for finger vein image enhancement. The experimental results on two public datasets demonstrate the effectiveness of the proposed method in enhancing the image quality and finger vein recognition accuracy.

  6. An Unusual Course and Termination of Small Saphenous Vein: A Case Report

    Science.gov (United States)

    Shetty, Prakashchandra; D’Souza, Melanie Rose

    2016-01-01

    The superficial veins of the lower limb can vary in their course and termination. We report a relatively rare type of variation in the course and termination of small saphenous vein. The small saphenous vein had normal origin and course in the leg. However, instead of terminating into the popliteal vein, it continued up in the posterior compartment of the thigh and terminated into the femoral vein after piercing the fleshy part of the adductor magnus muscle. This course might lead to varicosity of the small saphenous vein due to the compression by the fleshy fibres of adductor magus near its termination. The case may be of interest to general and plastic surgeons and even cardiothoracic surgeons. PMID:27134850

  7. Rule-based model of vein graft remodeling.

    Directory of Open Access Journals (Sweden)

    Minki Hwang

    Full Text Available When vein segments are implanted into the arterial system for use in arterial bypass grafting, adaptation to the higher pressure and flow of the arterial system is accomplished thorough wall thickening and expansion. These early remodeling events have been found to be closely coupled to the local hemodynamic forces, such as shear stress and wall tension, and are believed to be the foundation for later vein graft failure. To further our mechanistic understanding of the cellular and extracellular interactions that lead to global changes in tissue architecture, a rule-based modeling method is developed through the application of basic rules of behaviors for these molecular and cellular activities. In the current method, smooth muscle cell (SMC, extracellular matrix (ECM, and monocytes are selected as the three components that occupy the elements of a grid system that comprise the developing vein graft intima. The probabilities of the cellular behaviors are developed based on data extracted from in vivo experiments. At each time step, the various probabilities are computed and applied to the SMC and ECM elements to determine their next physical state and behavior. One- and two-dimensional models are developed to test and validate the computational approach. The importance of monocyte infiltration, and the associated effect in augmenting extracellular matrix deposition, was evaluated and found to be an important component in model development. Final model validation is performed using an independent set of experiments, where model predictions of intimal growth are evaluated against experimental data obtained from the complex geometry and shear stress patterns offered by a mid-graft focal stenosis, where simulation results show good agreements with the experimental data.

  8. Liver transplantation in patients with portal vein thrombosis.

    Science.gov (United States)

    Manzanet, G; Sanjuán, F; Orbis, P; López, R; Moya, A; Juan, M; Vila, J; Asensi, J; Sendra, P; Ruíz, J; Prieto, M; Mir, J

    2001-02-01

    The aim of this study is to analyze the incidence, risk factors, management, and follow-up of patients with portal vein thrombosis (PVT) undergoing primary orthotopic liver transplantation (OLT). Four hundred fifteen OLTs were performed in 391 patients. In 62 patients, partial (group 1; n = 48) or complete (group 2; n = 14) PVT was found at the time of surgery. Portal flow was reestablished by venous thrombectomy. In this study, we compare 62 primary OLTs performed in patients with PVT at the time of OLT with a group of 329 primary OLTs performed in patients without PVT (group 3) and analyze the incidence of PVT, use of diagnostic methods, surgical management, and outcome. We found no significant differences among the 3 groups for length of surgery, cold and warm ischemic times, and postoperative stay in the intensive care unit. With the piggyback technique, groups 1 and 2 had greater blood losses and required more blood transfusions than group 3. The early reoperation rate was greater in group 2. The incidence of rethrombosis was 4.8% (group 1, 2%; group 2, 14.3%). Reexploration and thrombectomy (2 patients) and retransplantation (1 patient) had a 100% mortality rate. In particular, the mortality rate of patients with complete PVT with extension into the splanchnic veins is high (33%). Three-month and 4-year patient survival rates were statistically similar in the 3 groups. The presence of PVT at the time of OLT is not a contraindication for OLT. However, if PVT extends into the splanchnic veins, the outcome is guarded.

  9. Low-grade leiomyosarcoma of renal vein: A case report

    Directory of Open Access Journals (Sweden)

    Nalan NEŞE

    2008-01-01

    Full Text Available Leiomyosarcomas originating from renal vein are quite rare malignant tumors since only 30 cases have been reported in the literature. Clinical symptoms which are due to a renal mass along with radiological findings, usually mislead to a preoperative diagnosis of renal cell carcinoma. The correct diagnosis is frequently made on nephrectomy specimens. Low-grade leiomyosarcomas need to be differentiated from leiomyomas. Increased mitotic activity and necrosis are known to be gold standards for differential diagnosis. In this report, we present a case of a 62 year old woman whose tumor in the left kidney diagnosed as low-grade leiomyosarcoma together with a brief review of the literature.

  10. Levoatriocardinal vein with normal intracardiac anatomy and pulmonary venous return

    Directory of Open Access Journals (Sweden)

    Ender Odemis

    2011-01-01

    Full Text Available Levoatriocardinal vein (LACV is characterized by an abnormal connection between pulmonary and systemic venous return. This extremely rare cardiac malformation is usually associated with left-sided obstructive lesions including mitral atresia, hypoplastic left-heart syndrome, and abnormal pulmonary venous connection. Patients may have low systemic cardiac output and pulmonary venous obstruction symptoms. In this manuscript, we report a case with LACV and normal pulmonary venous return with absence of any intracardiac pathology. LACV was demonstrated with echocardiography, angiography, and computed tomography. Surgical correction was made successfully.

  11. Facial vein thrombophlebitis: an uncommon complication of sinusitis.

    Science.gov (United States)

    Cotes, Claudia; Riascos, Roy; Swischuk, Leonard E

    2015-07-01

    Facial vein thrombophlebitis is an uncommon complication of sinusitis. In cases where periorbital swelling complicating sinusitis is diagnosed, clinical findings of swelling and erythema extending beyond the orbital region into the cheek should alert the physician about this unusual complication and the need for further contrast-enhanced imaging and venography. The radiologist must be particularly careful in the evaluation of vascular structures of the face and neck in these children. CT and MRI with contrast material and MR venography are studies that clearly demonstrate the vascular anatomy and possible complications. However, MR venography confirms flow abnormalities within the venous system with the advantage of avoiding radiation exposure to the pediatric patient.

  12. Fenestrated internal jugular vein: a rare finding in neck dissection.

    Science.gov (United States)

    Moreno-Sánchez, M; Hernández Vila, C; González-García, R; Monje, F

    2015-09-01

    Fenestration of the internal jugular vein (IJV) is an extremely rare phenomenon. An 85-year-old woman was referred to our department with T2N0M0 squamous cell carcinoma of the right floor of the mouth. The patient underwent local resection, an ipsilateral modified type 3 radical neck dissection, and microsurgical reconstruction. During neck dissection, a fenestration was observed in the middle of the IJV. No structure passed through the fenestration. Such anatomical variations are rare, but clinicians and surgeons should be aware of them in order to avoid damage to the important vascular structures, especially if a neck dissection is performed.

  13. Diodia vein chlorosis virus is a group-1 crinivirus.

    Science.gov (United States)

    Tzanetakis, Ioannis E; Wintermantel, William M; Poudel, Bindu; Zhou, Jing

    2011-11-01

    Members of the family Closteroviridae have emerged as a major problem in agricultural crops in the past two decades. Diodia vein chlorosis virus (DVCV) is an understudied whitefly-transmitted closterovirus. Given the presence of the primary host for the virus in major agricultural production areas in the United States, we characterized the virus at the molecular level, demonstrating that it belongs in the genus Crinivirus, developed detection protocols, evaluated its host range among hosts known to harbor viruses closely related to DVCV, and confirmed transmission by a second whitefly species, Trialeurodes vaporariorum.

  14. Alteration and vein mineralization, Schwartzwalder uranium deposit, Front Range, Colorado

    Science.gov (United States)

    Wallace, Alan R.

    1983-01-01

    The Schwartzwalder uranium deposit, in the Front Range west of Denver, Colorado, is the largest vein-type uranium deposit in the United States. The deposit is situated in a steeply dipping fault system that cuts Proterozoic metamorphic rocks. The host rocks represent a submarine volcanic system with associated chert and iron- and sulfide-rich pelitic rocks. Where faulted, the more competent garnetiferous and quartzitic units behaved brittlely and created a deep, narrow conduit. The ores formed 70-72 m.y. ago beneath 3 km of Phanerozoic sedimentary rocks. Mineralization included two episodes of alteration and three stages of vein-mineralization. Early carbonate-sericite alteration pseudomorphically replaced mafic minerals, whereas the ensuing hematite-adularia episode replaced only the earlier alteration assemblage. Early vein mineralization produced a minor sulfide-adularia-carbonate assemblage. Later vein mineralization generated the uranium ores in two successive stages. Carbonates, sulfides, and adularia filled the remaining voids. Clastic dikes composed of fault gouge and, locally, ore were injected into new and existing fractures. Geologic and chemical evidence suggest that virtually all components of the deposit were derived from major hornblende gneiss units and related rocks. The initial fluids were evolved connate/metamorphic water that infiltrated and resided along the extensive fault zones. Complex fault movements in the frontal zone of the eastern Front Range caused the fluids to migrate to the most permeable segments of the fault zones. Heat was supplied by increased crustal heat flow related to igneous activity in the nearby Colorado mineral belt. Temperatures decreased from 225?C to 125?C during later mineralization, and the pressure episodically dropped from 1000 bars. The CO2 fugacity was initially near 100 bars, and uranium was carried as a dicarbonate complex. Sudden decreases in confining pressure during fault movement caused evolution of CO2

  15. Acute scrotum in a neonate caused by renal vein thrombosis.

    Science.gov (United States)

    Maas, C; Müller-Hansen, I; Flechsig, H; Poets, C F

    2011-03-01

    The authors report on a rare case of neonatal scrotal oedema occurring concurrently with pain upon palpation of the spermatic cord on the first day of life. An ultrasound examination showed poor perfusion of the left testicle and a thrombosis of the left renal vein; intraoperative exploration indicated necrosis of the left testicle without signs of torsion. Gorged vessels with paravasal bleeding were found in the spermatic cord. The authors hypothesise that necrosis of the testicle may result from haemorrhagic infarction caused by renal venous thrombosis. Acute scrotal discolouration with pain upon palpation in neonates is usually attributed to testicular torsion. The authors report a case where these symptoms had a different cause.

  16. Mortality in patients with branch retinal vein occlusion

    DEFF Research Database (Denmark)

    Christoffersen, Nynne; Gade, Else; Knudsen, Lars;

    2007-01-01

    PURPOSE: To assess the impact of branch retinal vein occlusion (BRVO), a condition related to arteriolar wall thickening, as a prognostic marker of mortality. DESIGN: Long-term follow-up study comparing cases with background population. PARTICIPANTS: Patients diagnosed with BRVO. METHODS: Diagnosis...... occlusion was found in 329 patients (173 women, 156 men) born between 1902 and 1956, who were 39 to 91 years old when diagnosed between 1973 and 1998. Follow-up was concluded on July 8, 2004, when 144 deaths were recorded in patients (74 women, 70 men), compared with an expected number of 145.5 deaths...

  17. Acute Pancreatitis and Splenic Vein Thrombosis due to Hypertriglyceridemia.

    Science.gov (United States)

    Gündüz, Ercan; Dursun, Recep; İçer, Mustafa; Zengin, Yılmaz; Güloğlu, Cahfer

    2015-01-01

    Acute pancreatitis (AP) is a condition characterised by the activation of the normally inactive digestive enzymes due to an etiological factor and digestion of the pancreatic tissues, resulting in extensive inflammation and leading to local, regional, and systemic complications in the organism. It may vary from the mild edematous to the hemorrhagic and severely necrotising form. The most common causes are biliary stones and alcohol abuse. In this case study, we would like to present a patient with AP due to hypertriglyceridemia (HPTG), which is a rare cause of pancreatitis, and splenic vein thrombosis, which is a rare complication of pancreatitis.

  18. Central retinal vein occlusion following Sirsasana (headstand posture

    Directory of Open Access Journals (Sweden)

    Shah Nikunj

    2009-01-01

    Full Text Available We report a case of central retinal vein occlusion (CRVO following Sirsasana, a head-down postural yoga. A 55-year-old male patient presented to us, with sudden-onset loss of vision following Sirsasana, in the right eye. The patient had suffered from pulmonary thromboembolism 5 years earlier and was receiving warfarin prophylaxis. Over 6 months of follow-up, the patient developed neovascularization of the iris and was subjected to panretinal laser with no improvement in visual acuity. Sirsasana could be an important risk factor for CRVO especially in predisposed patients.

  19. A hand vein recognition system based on DSP and CPLD

    Institute of Scientific and Technical Information of China (English)

    KANG Wen-xiong; CHEN Zi-yi; YANG Qing-qiang

    2010-01-01

    @@ The hand vein recognition system based on digital signal processing(DSP)and complex programmable logic device (CPLD)is designed according to the requirements for equipment volume,accuracy and reaction speed.The overall structure and detailed implementation of the system hardware architecture are discussed in this paper.Moreover,the design philosophy and specific realization of system software as well as core algorithms are explored.The recognition system owns many good characteristics,such as high-degree integration,simple structure,flexible programming,convenient application and so on,which make it suitable for circumstances with high requirements for personal identification.

  20. Proximal lower limb vein thrombosis following vipera berus hand bite.

    Science.gov (United States)

    Gary, T; Prüller, F; Froehlich, H; Werner, S; Hafner, F; Brodmann, M

    2010-05-01

    Vipera berus has a wide geographical distribution throughout Central and Northern Europe. The symptoms after a bite usually are mild, life threatening symptoms are mainly described in children. We describe a case of popliteal vein thrombosis of the right leg after systemic envenoming with Vipera berus venom after a bite in the right hand by a female Vipera berus in the alpine region of Styria, Austria. Changes of the plasmatic coagulation system were obvious in our patient. These changes were due to an activation of the coagulation system and might be the reason for the thrombotic event in this usually healthy young male person.

  1. An Efficient Vein Pattern-based Recognition System

    CERN Document Server

    Soni, Mohit; Rao, M S; Gupta, Phalguni

    2010-01-01

    This paper presents an efficient human recognition system based on vein pattern from the palma dorsa. A new absorption based technique has been proposed to collect good quality images with the help of a low cost camera and light source. The system automatically detects the region of interest from the image and does the necessary preprocessing to extract features. A Euclidean Distance based matching technique has been used for making the decision. It has been tested on a data set of 1750 image samples collected from 341 individuals. The accuracy of the verification system is found to be 99.26% with false rejection rate (FRR) of 0.03%.

  2. Facial vein thrombophlebitis: an uncommon complication of sinusitis

    Energy Technology Data Exchange (ETDEWEB)

    Cotes, Claudia [The University of Texas Medical Branch, Department of Radiology, Galveston, TX (United States); Riascos, Roy [The University of Texas Medical School, Department of Diagnostic and Interventional Imaging, Houston, TX (United States); Swischuk, Leonard E. [The University of Texas Medical Branch, Department of Pediatrics and Pediatric Radiology, Galveston, TX (United States)

    2015-08-15

    Facial vein thrombophlebitis is an uncommon complication of sinusitis. In cases where periorbital swelling complicating sinusitis is diagnosed, clinical findings of swelling and erythema extending beyond the orbital region into the cheek should alert the physician about this unusual complication and the need for further contrast-enhanced imaging and venography. The radiologist must be particularly careful in the evaluation of vascular structures of the face and neck in these children. CT and MRI with contrast material and MR venography are studies that clearly demonstrate the vascular anatomy and possible complications. However, MR venography confirms flow abnormalities within the venous system with the advantage of avoiding radiation exposure to the pediatric patient. (orig.)

  3. OCT imaging of myocardium extending to pulmonary vein

    Science.gov (United States)

    Li, Zhifang; Dickfeld, Timm; Tang, Qinggong; Wang, Bohan; Chen, Yu

    2016-02-01

    In this study, we propose to use optical coherence tomography to enable a direct visualization of myocardium extending into the pulmonary vein (PV). The results showed that there are obvious differences in the morphology of myocardium and fibrous tissue in the transition region of myocardial sleeve, which is in agreement with the histological analysis. In addition, the myocardial area in transition point has three layers in the depth of 1 mm, and the depth-resolved myocardial fiber show different orientation in the different layers. This characteristic was applied for segmentation of the structures of myocardium extending into PV.

  4. Acute Pancreatitis and Splenic Vein Thrombosis due to Hypertriglyceridemia

    Directory of Open Access Journals (Sweden)

    Ercan Gündüz

    2015-01-01

    Full Text Available Acute pancreatitis (AP is a condition characterised by the activation of the normally inactive digestive enzymes due to an etiological factor and digestion of the pancreatic tissues, resulting in extensive inflammation and leading to local, regional, and systemic complications in the organism. It may vary from the mild edematous to the hemorrhagic and severely necrotising form. The most common causes are biliary stones and alcohol abuse. In this case study, we would like to present a patient with AP due to hypertriglyceridemia (HPTG, which is a rare cause of pancreatitis, and splenic vein thrombosis, which is a rare complication of pancreatitis.

  5. Incidence and diagnosis of deep vein thrombosis associated with pregnancy.

    Science.gov (United States)

    Kierkegaard, A

    1983-01-01

    The incidence of deep vein thrombosis (DVT), diagnosed by ascending phlebography, has been calculated retrospectively in a group of 14 869 obstetrical patients. The incidence was calculated to 0.13 per thousand antepartum and 0.61 per thousand postpartum. The study revealed that clinical signs and symptoms of thrombosis are very unreliable in pregnant women but more reliable in puerperal women. It is concluded that objective diagnosis of thrombosis is important in pregnant women, and ascending phlebography is a rewarding objective method to use in pregnant women.

  6. Inflammatory pseudotumor causing deep vein thrombosis after metal-on-metal hip resurfacing arthroplasty.

    LENUS (Irish Health Repository)

    Memon, Adeel Rasool

    2013-01-01

    Metal-on-metal hip resurfacings have recently been associated with a variety of complications resulting from adverse reaction to metal debris. We report a case of extensive soft tissue necrosis associated with a huge pelvic mass causing extensive deep vein thrombosis of the lower limb secondary to mechanical compression of the iliac vein. This is a rare and unusual cause of deep vein thrombosis after metal-on-metal hip resurfacing arthroplasty.

  7. VARIATION IN THE OPENINGS (OSTIA OF LEFT PULMONARY VEINS INTO THE LEFT ATRIUM: A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Sesi

    2015-03-01

    Full Text Available During early embryonic development, absorption of pulmonary venous network by the left primitive atrial chamber results in opening of four pulmonary veins which drain independently into its chamber. The extent of absorption and hence, the number of pulmon ary veins which open into the left atrium, may vary. Here we report a variation in the opening of the Left upper (superior pulmonary vein into the Left atrium. A total of six openings observed

  8. An Extremely Rare Anatomical Variation: Abnormal Drainage of the Anterior Interventricular Coronary Vein

    Science.gov (United States)

    Okur, Aylin; Sade, Recep; Ogul, Hayri; Karaca, Leyla; Kantarci, Mecit

    2016-01-01

    Variation of anterior interventricular vein draining into the left atrium is an extremely rare occurrence. Multidetector computed tomography (MDCT) coronary angiography has recently become the gold standard for depicting anatomical variations and anomalies of coronary arteries and veins. We herein have reported the case of a 36-year-old male whose anterior interventricular vein draining into the left atrium was demonstrated by MDCT coronary angiography. PMID:27122958

  9. Treatment of portal vein tumor thrombus using ~(125)Iodine seed implantation brachytherapy

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    We reported two cases of liver metastasis with portal vein tumor thrombus that developed after liver transplantation for hepato cellular carcinoma (HCC). Both the patients were women aged 43 and 55 years, who had liver metastasis and portal vein tumor thrombus formation after liver transplantations for HCC. For the treatment of portal vein tumor thrombus, 125I seeds were implanted into the hepatic tissue under the guidance of preoperative computed tomography (CT) images with a total radiation dose of 130 Gy...

  10. Prenatal Calcification of the Inferior Vena Cava and Renal Veins in a Normal Neonate

    Directory of Open Access Journals (Sweden)

    Daniel Ranch

    2006-01-01

    Full Text Available Prenatal calcification of the inferior vena cava (IVC and renal veins is a rare condition with unclear etiology and prognosis. It occurs with renal vein thrombosis in utero and is associated with congenital anomalies and abnormal prenatal hemodynamic status. We report a rare case of prenatal IVC and renal vein calcification in a normal neonate without any history of compromised prenatal or perinatal condition, or significant deterioration of kidney function.

  11. Direct US-guided puncture of the innominate veins for central venous access.

    Science.gov (United States)

    Lau, T N; Kinney, T B

    2001-05-01

    Maintenance of functioning venous access is recognized as the Achilles heel of long-term hemodialysis treatment. In patients who require catheter-directed hemodialysis, the internal jugular veins are recognized as the optimal veins for insertion of dialysis catheters. When these sites are no longer available, alternative venous access sites are required. The authors describe two hemodialysis patients with limited access sites in whom hemodialysis catheters were successfully inserted directly into the innominate veins with use of ultrasound-guided punctures.

  12. Hand Vein Images Enhancement Based on Local Gray-level Information Histogram

    OpenAIRE

    Jun Wang; Guoqing Wang; Ming Li; Wenkai Du; Wenhui Yu

    2015-01-01

    Based on the Histogram equalization theory, this paper presents a novel concept of histogram to realize the contrast enhancement of hand vein images, avoiding the lost of topological vein structure or importing the fake vein information. Firstly, we propose the concept of gray-level information histogram, the fundamental characteristic of which is that the amplitudes of the components can objectively reflect the contribution of the gray levels and information to the representation of image in...

  13. Arteriovenous Fistula Complicated by Popliteal Venous Access for Endovascular Thrombolytic Therapy of Deep Vein Thrombosis

    Energy Technology Data Exchange (ETDEWEB)

    Byun, Sung Su; Kim, Jeong Ho; Park, Chul Hi; Hwang, Hee Young; Kim, Hyung SiK [Gacheon University Gil Medical Center, Gacheon (Korea, Republic of); Jeon, Young Sun; Kim, Won Hong [Inha University College of Medicine, Incheon (Korea, Republic of)

    2008-10-15

    We report a case of an iatrogenic arteriovenous fistula complicated by catheter- directed thrombolytic therapy in a patient with acute deep vein thrombosis of a lower extremity. To the best of our knowledge, this is the first report of an arteriovenous fistula between the sural artery and popliteal vein in that situation. As the vessels have a close anatomical relationship, the arteriovenous fistula seems to be a potential complication after endovascular thrombolytic therapy of acute deep vein thrombosis.

  14. Intra-Arterial Thrombolysis for Deep Vein Thrombosis of the Lower Extremity: Case Report

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Moo Sang; Roh, Byung Suk [Dept. of Radiology, Wonkwang University School of Medicine, Iksan (Korea, Republic of)

    2011-09-15

    If the appropriate catheterization of the affected vein was not possible because of a narrowed or thrombus-filled venous lumen, successful treatment gets into trouble during catheter directed regional thrombolysis for treatment of deep vein thrombosis. In this situation, intra-arterial thrombolysis can be considered as an alternative treatment, but to the best of our knowledge, only two reports have been described. We present here cases of successful intra-arterial thrombolysis in patients with deep vein thrombosis.

  15. Improving deep vein thrombosis prophylaxis with mechanical modalities in surgical intensive care unit.

    Science.gov (United States)

    Restrepo, Paula; Jameson, Deborah L; Carroll, Diane L

    2015-01-01

    Deep vein thrombosis remains a source of adverse outcomes in surgical patients. Deep vein thrombosis is preventable with prophylactic intervention. The success of noninvasive mechanical modalities for prophylaxis relies on compliance with correct application. The goals of this project were to create a guideline that reflected current evidence and expert thinking about mechanical modalities use, assess compliance with mechanical modalities, and develop strategies to disseminate an evidence-based guideline for deep vein thrombosis prophylaxis.

  16. Bipolar radiofrequency-induced thermotherapy of great saphenous vein: Our initial experience

    Directory of Open Access Journals (Sweden)

    Venkatesh Kasi

    2012-01-01

    Full Text Available The incidence of varicose veins in lower limbs is increasing in the Indian subcontinent. With the advent of radiofrequency ablation (RFA, an effective minimally invasive technique is now available to treat varicose veins. RFA can be performed with either unipolar or bipolar probes. We present a simple technique for bipolar radiofrequency-induced thermotherapy of the great saphenous vein. This can be a safe and effective alternative to surgical procedures.

  17. Hydraulic tuning of vein cell microstructure in the evolution of angiosperm venation networks.

    Science.gov (United States)

    Feild, Taylor S; Brodribb, Timothy J

    2013-08-01

    High vein density (D(V)) evolution in angiosperms represented a key functional transition. Yet, a mechanistic account on how this hydraulic transformation evolved remains lacking. We demonstrate that a consequence of producing high D(V is that veins must become very small to fit inside the leaf, and that angiosperms are the only clade that evolved the specific type of vessel required to yield sufficiently conductive miniature leaf veins. From 111 species spanning key divergences in vascular plant evolution, we show, using analyses of vein conduit evolution in relation to vein packing, that a key xylem innovation associated with high D(V) evolution is a strong reduction in vein thickness and simplification of the perforation plates of primary xylem vessels. Simple perforation plates in the leaf xylem occurred only in derived angiosperm clades exhibiting high D(V) (> 12 mm mm(-2)). Perforation plates in the vessels of other species, including extant basal angiosperms, consisted of resistive scalariform types that were associated with thicker veins and much lower D(V). We conclude that a reduction in within-vein conduit resistance allowed vein size to decrease. We suggest that this adaptation may have been a critical evolutionary step that enabled dramatic D(V) elaboration in angiosperms.

  18. Portal venous stent placement for treatment of portal hypertension caused by benign main portal vein stenosis

    Institute of Scientific and Technical Information of China (English)

    Hong Shan; Xiang-Sheng Xiao; Ming-Sheng Huang; Qiang Ouyang; Zai-Bo Jiang

    2005-01-01

    AIM: To evaluate the value of endovascular stent in the treatment of portal hypertension caused by benign main portal vein stenosis.METHODS: Portal vein stents were implanted in six patients with benign main portal vein stenosis (inflammatory stenosis in three cases, postprocedure of liver transplantation in another three cases). Changes in portal vein pressure, portal vein patency, relative clinical symptoms, complications, and survival were evaluated.RESULTS: Six metallic stents were successfully placed across the portal vein stenotic or obstructive lesions in six patients. Mean portal venous pressure decreased significantly after stent implantation from (37.3±4.7) cm H2O to (18.0±1.9) cm H2O. The portal blood flow restoredand the symptoms caused by portal hypertension were eliminated. There were no severe procedure-related complications. The patients were followed up for 1-48 mo. The portal vein remained patent during follow-up. All patients survived except for one patient who died of other complications of liver transplantation. CONCLUSION: Percutaneous portal vein stent placement for the treatment of portal hypertension caused by benign main portal vein stenosis is safe and effective.

  19. Complete renal recovery from severe acute renal failure after thrombolysis of bilateral renal vein thrombosis.

    Science.gov (United States)

    Ramadoss, Suresh; Jones, Robert G; Foggensteiner, Lukas; Willis, Andrew P; Duddy, Martin J

    2012-10-01

    A previously healthy young man presented with acute renal failure due to extensive spontaneous deep vein thrombosis, including the inferior vena cava (IVC) and both renal veins. The patient was treated with selectively delivered thrombolytic therapy over a 7-day-period, which resulted in renal vein patency and complete recovery of renal function. A stent was placed over a segment stenosis of the IVC. No thrombophilic factors were identified. Bilateral renal vein thrombosis in young fit individuals is an unusual cause of acute renal failure. Thrombolytic therapy, even with delay, can completely restore renal function.

  20. Novel Image Guidance Techniques for Portal Vein Targeting During Transjugular Intrahepatic Portosystemic Shunt Creation.

    Science.gov (United States)

    Farsad, Khashayar; Kaufman, John A

    2016-03-01

    The most challenging part of transjugular intrahepatic portosystemic shunt creation is arguably the transvenous access from the hepatic vein to the portal vein. As experience and technology have evolved, the image guidance aspect of this critical step in the procedure has become more robust. Improved means to target the portal vein include both direct and indirect methods of portal vein opacification, cross-sectional imaging for both targeting and access, and novel use of transabdominal and intravascular ultrasound guidance. These techniques are described herein.