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Sample records for internal spermatic vein

  1. Transjugular embolization of the internal spermatic vein for the treatment of varicocele

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    Park, Man Soo; Kwak, Byung Guk; Shim, Hyung Jin; Kim, Sae Chul; Kim, Kun Sang [College of Medicine, Chungang University, Seoul (Korea, Republic of)

    1989-12-15

    A transjugular approach for testicular venography and embolization of the internal spermatic vein was performed in 7 patients (6 left and 1 bilateral). Embolization were satisfactory in 6 of 7 patients. This transjugular technique fascilates subselective catheterization of the internal spermatic vein and its collaterals and enables coils to be placed deeply within these vessels.

  2. Percutaneous sclerotherapy of the internal spermatic vein for varicocele through an open ended guide wire

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    Wilms, G.; Oyen, R.; Casselman, J.; Baert, A.L.

    1987-08-01

    Percutaneous sclerotherapy of the internal spermatic vein through an open ended guide wire was performed in 50 patients with left sided variocele. The procedure was successful in 47 patients, without major complications. Percutaneous sclerotherapy through an open ended guide wire offers the advantage of very distal and superselective catheterization with complete embolization of the internal spermatic vein, its side branches and parallel collateral channels. Further follow-up hopefully will confirm the reduction of recurrence rate in our patients.

  3. Anatomical variants of the internal spermatic vein discovered during the percutaneous embolization of left varicoceles in a pediatric population

    International Nuclear Information System (INIS)

    Garel, L.; Dubois, J.; Rypens, F.; Ouimet, A.; Yazbeck, S.

    2004-01-01

    To report on the high incidence of anatomical variants of the origin and course of the internal spermatic vein (ISV) discovered at the time of percutaneous embolization of left varicoceles in a pediatric population. We reviewed retrospectively the 65 cases of left varicocele treated by percutaneous embolization (grade II and III) in our institution between 1990 and 2000. The course of the left renal vein (LRV), the origin of the ISV, and the number of ISVs and their pathway were recorded in all cases, according to the B ren classification. In 37/65 (57%), the ISV was single and arose from a normal LRV (type I).The following variants were encountered: type V - circumaortic LRV 9/65 (14%); type IVb - intrarenal origin of ISV 8/65 (12%); type II - multiple ISV 5/65 (8%); and pelvic collaterals 6/65 (9%). Venous anatomical variants are frequently encountered (43%) at the time of left varicocele embolization in children. Such variants often impose some adjustments to the technique of embolization and, at times, hamper the procedure. (author)

  4. Anatomical variants of the internal spermatic vein discovered during the percutaneous embolization of left varicoceles in a pediatric population; Variantes anatomiques de la veine spermatique lors du traitement endovasculaire des varicoc es gauches : une serie pediatrique

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    Garel, L.; Dubois, J.; Rypens, F.; Ouimet, A.; Yazbeck, S. [Univ. of Montreal, Sainte-Justine Hospital, Montreal, Quebec (Canada)]. E-mail: laurent_garel@ssss.gouv.qc.ca

    2004-02-01

    To report on the high incidence of anatomical variants of the origin and course of the internal spermatic vein (ISV) discovered at the time of percutaneous embolization of left varicoceles in a pediatric population. We reviewed retrospectively the 65 cases of left varicocele treated by percutaneous embolization (grade II and III) in our institution between 1990 and 2000. The course of the left renal vein (LRV), the origin of the ISV, and the number of ISVs and their pathway were recorded in all cases, according to the B ren classification. In 37/65 (57%), the ISV was single and arose from a normal LRV (type I).The following variants were encountered: type V - circumaortic LRV 9/65 (14%); type IVb - intrarenal origin of ISV 8/65 (12%); type II - multiple ISV 5/65 (8%); and pelvic collaterals 6/65 (9%). Venous anatomical variants are frequently encountered (43%) at the time of left varicocele embolization in children. Such variants often impose some adjustments to the technique of embolization and, at times, hamper the procedure. (author)

  5. Fertility results from spermatic vein embolization with hot contrast material

    International Nuclear Information System (INIS)

    Smith, T.P.; Hunter, D.W.; Darcy, M.D.; Cragg, A.H.; Castaneda-Juniga, W.R.; Amplatz, K.

    1987-01-01

    Spermatic venography with hot contrast agent embolization was performed in 100 patients, nine with symptomatic varicocele and 91 with infertility, with at least a 1-year follow-up in all patients. All symptomatic patients improved. In patients with infertility there was an increase in sperm count in 71% and a motility increase in 71%. The impregnation rate is currently just above 30%. Complications were all minor and included scrotal swelling, anterior thigh anesthesia, and two cases of near aspermia. The results of hot contrast agent embolization are comparable to those achieved with other techniques. The procedure is inexpensive and easy to perform

  6. Effects of acute exercise on the diameter of the spermatic vein, and duration of reflux in patients with varicocele.

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    Atar, Murat; Söylemez, Haluk; Oguz, Fatih; Beytur, Ali; Altunoluk, Bülent; Kahraman, Bayram; Islamoglu, Yahya; Soylu, Ahmet

    2013-06-01

    The aim of this study was to investigate the effects of acute exercise on the diameter of the spermatic vein, and on the duration of reflux in patients with varicocele. The study included 38 patients with complaints of infertility and scrotal pain between 2009 and 2010. The diagnoses were made by physical examination and colour Doppler ultrasound, with both performed before and after exercise tests. The mean age of the participants was 25.7 ± 4.9 years. During the first examination, the grades of the varicoceles detected were as follows: grade I, n = 7; II, n = 10; and III, n = 21. The diameters of veins in patients with grades I, II and III varicocele were 2.1 mm, 2.9 mm and 4.2 mm, respectively, before exercise, whereas they were 2.6 mm, 3.2 mm and 4.3 mm, respectively, after exercise. In patients with grade I varicoceles, compared with pre-exercise values, the diameter of the left spermatic vein and duration of reflux measured during Valsalva manoeuvres were increased significantly after exercise (p = 0.042 and p = 0.034, respectively); similar results were obtained for the patients with grade II varicoceles (p = 0.007 and p = 0.008, respectively). However, the minimal relative increase in cases with grade III varicoceles was not statistically significant (p > 0.05). This study demonstrates that acute exercise increases the spermatic vein diameter and reflux time in patients with varicoceles. These outcomes demonstrate that acute exercise may be an aggravating factor for varicocele, as seen in chronic exercise.

  7. Efficacy of spermatic vein ligation in patients affected by high grade left varicocele

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    Marco Grasso

    2014-01-01

    Full Text Available Purpose: To study the effect of high grade varicocele treatment in infertile patients. Materials and Methods: Seventy-five patients were selected by the following criteria: infertility persisting for more than 1 year; abnormal semen parameters; no other infertility-related disease; no obvious causes of infertility in the subject’s partner; basal eco-color Doppler ultrasound demonstrating continuous reflux in the spermatic vein. All patients considered for the study had at least a six months period from the diagnosis to the surgery due to waiting list, choice of the patient or time needed to complete diagnostic evaluation of the couple. The surgical procedure was performed through an inguinal approach. All enrolled patients were counseled to have unprotected intercourse during the ovulation period in order to maximize the probability of pregnancy within the 6-month preoperative period. The achievement of pregnancy and semen parameters were recorded during the preoperative and postoperative period. Results: Two of the seventy-five patients were excluded because of persistent varicocele after surgery. The preoperative pregnancy rate was 1.3% (1 couple. The postoperative pregnancy rate was 42.5%. The stratification of pregnancies by semester showed a significantly higher rate in the first postoperative period (p = 0.0012. Mean time to conception was 13.5 months. Mean preoperative sperm count was 17.6x10 6 /mL compared to 19.7x10 6 /mL in the postoperative period (p < 0.0001. Mean percentage of progressive sperm motility was 13.7%, compared to 17.6% in the postoperative period (p < 0.0001. Mean percentage of normal sperm morphology was 7.6%, compared to 15.2% postoperatively (p < 0.0001. Conclusion: Surgical treatment of high grade varicocele proved to effectively treat associated infertility by improving seminal parameters and pregnancy rate in our patient cohort.

  8. Percutaneous coil embolization in the management of spermatic varicocele

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    Yang, Seoung Oh [Capital Armed Forces General Hospital, Seoul (Korea, Republic of); Park, Jae Hyung [College of Medicine, Seoul National University, Seoul (Korea, Republic of)

    1987-10-15

    Percutaneous occlusion of the internal spermatic vein is a new, safe, and effective alternative therapy to surgical ligation in the treatment of spermatic varicocele. Embolization with stainless steel coils was done on 10 patients with symptomatic spermatic varicocele immediately after diagnostic venography. The results of these procedures were assessed by clinical improvement of symptoms and objective diminution of the dilated pampiniform plexus demonstrable using scrotal ultrasonography. In one patient with single coil occlusion had a recurrence, and the other 9 patients showed both clinical and ultrasonographic improvements of the varicocele. Percutaneous embolization with steel coils appeared to be effective without major complications and the savings of hospitalization and general anesthesia are important additional merits of this method being performed in the radiologic department on an outpatient basis.

  9. Varicocele is the root cause of BPH: Destruction of the valves in the spermatic veins produces elevated pressure which diverts undiluted testosterone directly from the testes to the prostate.

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    Goren, M; Gat, Y

    2018-03-22

    In varicocele, there is venous flow of free testosterone (FT) directly from the testes into the prostate. Intraprostatic FT accelerates prostate cell production and prolongs cell lifespan, leading to the development of BPH. We show that in a large group of patients presenting with BPH, bilateral varicocele is found in all patients. A total of 901 patients being treated for BPH were evaluated for varicocele. Three diagnostic methods were used as follows: physical examination, colour flow Doppler ultrasound and contact liquid crystal thermography. Bilateral varicocele was found in all 901 patients by at least one of three diagnostic methods. Of those subsequently treated by sclerotherapy, prostate volume was reduced in more than 80%, with prostate symptoms improved. A straightforward pathophysiologic connection exists between bilateral varicocele and BPH. The failure of the one-way valves in the internal spermatic veins leads to a cascade of phenomena that are unique to humans, a result of upright posture. The prostate is subjected to an anomalous venous supply of undiluted, bioactive free testosterone. FT, the obligate control hormone of prostate cells, reaches the prostate directly via the venous drainage system in high concentrations, accelerating the rate of cell production and lengthening cell lifespan, resulting in BPH. © 2018 Blackwell Verlag GmbH.

  10. Antegrade scrotal sclerotherapy of internal spermatic veins for varicocele treatment: technique, complications, and results

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    Alessandro Crestani

    2016-01-01

    Full Text Available Varicocele repair is mainly indicated in young adult patients with clinical palpable varicocele and abnormal semen parameters. Varicocele treatment is associated with a significant improvement in sperm concentration, motility, morphology, and pregnancy rate. Antegrade scrotal sclerotherapy (ASS represented one of the main alternatives to the traditional inguinal or suprainguinal surgical ligation. This article reviews the use of ASS for varicocele treatment. We provide a brief overview of the history of the procedure and present our methods used in ASS. In addition, we review complication and success of ASS, including our own retrospective data of treating 674 patients over the last 17 years. Herein, we analyzed step by step the ASS technique and described our results with an original modified technique with a long follow-up. Between December 1997 and December 2014, we performed 674 ASS. Mean operative time was 14 min (range 9 to 50 min. No significant intraoperative complications were reported. Within 90 days from the procedure, postoperative complications were recorded in overall 49 (7.2% patients. No major complications were recorded. A persistent/recurrent varicocele was detected in 40 (5.9% cases. In 32/40 (80% cases, patients showed preoperative grade III varicoceles. In patients with a low sperm number before surgery, sperm count improved from 13 × 10 6 to 21 × 10 6 ml−1 (P < 0.001. The median value of the percentage of progressive motile forms at 1 h improved from 25% to 45% (P < 0.001. Percentage of normal forms increased from 17% before surgery to 35% 1 year after the procedure (P < 0.001. In the subgroup of the 168 infertile patients, 52 (31% fathered offspring at a 12-month-minimum follow-up. Therefore, ASS is an effective minimal invasive treatment for varicocele with low recurrence/persistence rate.

  11. Pain experience during internal spermatic vein embolization for varicocele: comparison of two cyanoacrylate glues

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    Heye, Sam; Maleux, Geert; Wilms, Guido [University Hospital Gasthuisberg, Department of Radiology, Leuven (Belgium)

    2006-01-01

    The purpose of this study was to evaluate possible pain sensation differences in patients after retrograde varicocele embolization either with n-butyl-(2)-cyanoacrylate (NBCA) or with n-butyl-(2)-cyanoacrylate + methacryloxysulfolane (NBCA-MS). Transcatheter varicocele embolization was performed in 64 consecutive patients (62 left, two bilateral). Embolization was done with NBCA (n=32) or NBCA-MS (n=32). Immediately after the procedure, patients were asked to evaluate pain during embolization using a visual analog scale (VAS). Statistical analysis was done with Student's t test. Mean pain score on VAS was 3.23 (range: 0-8) for NBCA and 3.28 (range 0-9) for NBCA-MS. This difference was not significant (P=0.932). Independently of the type of glue, no difference in pain sensation (P value 0.421) was found between patients younger than 18 (n=29) and patients older than 18 years of age (n=35) (younger than18, mean 3.52; older than 18, mean 3.05). No difference in mean pain experience level (P=0.323) was seen in 11 patients with vessel wall perforation (23.4%) during the procedure (3.89; range: 0-8.5) in comparison with those without perforation (mean pain sensation level: 3.13; range: 0-9). No difference in pain experience was found after transcatheter varicocele embolization either with NBCA or NBCA-MS. Age and vessel wall perforation have no influence on pain sensation independently of the type of glue. (orig.)

  12. Pain experience during internal spermatic vein embolization for varicocele: comparison of two cyanoacrylate glues

    International Nuclear Information System (INIS)

    Heye, Sam; Maleux, Geert; Wilms, Guido

    2006-01-01

    The purpose of this study was to evaluate possible pain sensation differences in patients after retrograde varicocele embolization either with n-butyl-(2)-cyanoacrylate (NBCA) or with n-butyl-(2)-cyanoacrylate + methacryloxysulfolane (NBCA-MS). Transcatheter varicocele embolization was performed in 64 consecutive patients (62 left, two bilateral). Embolization was done with NBCA (n=32) or NBCA-MS (n=32). Immediately after the procedure, patients were asked to evaluate pain during embolization using a visual analog scale (VAS). Statistical analysis was done with Student's t test. Mean pain score on VAS was 3.23 (range: 0-8) for NBCA and 3.28 (range 0-9) for NBCA-MS. This difference was not significant (P=0.932). Independently of the type of glue, no difference in pain sensation (P value 0.421) was found between patients younger than 18 (n=29) and patients older than 18 years of age (n=35) (younger than18, mean 3.52; older than 18, mean 3.05). No difference in mean pain experience level (P=0.323) was seen in 11 patients with vessel wall perforation (23.4%) during the procedure (3.89; range: 0-8.5) in comparison with those without perforation (mean pain sensation level: 3.13; range: 0-9). No difference in pain experience was found after transcatheter varicocele embolization either with NBCA or NBCA-MS. Age and vessel wall perforation have no influence on pain sensation independently of the type of glue. (orig.)

  13. Valsalva and gravitational variability of the internal jugular vein and common femoral vein: Ultrasound assessment

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    Beddy, P. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland)]. E-mail: pbeddy@eircom.net; Geoghegan, T. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland); Ramesh, N. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland); Buckley, O. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland); O' Brien, J. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland); Colville, J. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland); Torreggiani, W.C. [Department of Radiology, The Adelaide and Meath Hospital, Tallaght, Dublin 24 (Ireland)

    2006-05-15

    Purpose: Central venous cannulation via the common femoral vein is an important starting point for many interventions. The purpose of this study was to determine the optimum conditions for cannulation of the femoral vein and to compare these with the relative changes in the internal jugular vein. Methods: High-resolution 2D ultrasound was utilised to determine variability of the calibre of the femoral and internal jugular veins in 10 healthy subjects. Venous diameter was assessed during the Valsalva manoeuvre and in different degrees of the Trendelenburg position. Results: The Valsalva manoeuvre significantly increased the size of the femoral and internal jugular veins. There was a relatively greater increase in femoral vein diameter when compared with the internal jugular vein of 40 and 29%, respectively. Changes in body inclination (Trendelenburg position) did not significantly alter the luminal diameter of the femoral vein. However, it significantly increased internal jugular vein diameter. Conclusions: Femoral vein cannulation is augmented by the Valsalva manoeuvre but not significantly altered by the gravitational position of the subject.

  14. Umbilical vein draining into the inferior vena cava via the internal iliac vein, bypassing the liver

    International Nuclear Information System (INIS)

    Currarino, G.; Stannard, M.W.; Texas Univ., Dallas, TX; Kolni, H.

    1991-01-01

    This is the third report of an anomalous umbilical vein draining ectopically in a left pelvic vein, probably the left internal iliac, and through the inferior vena cava into the right atrium. The anomaly was encountered in a newborn infant with nonimmune hydrops fetalis, hypertrophic cardiomyopathy, multiorgan failure and possibly Noonan Syndrome. (orig.)

  15. Umbilical vein draining into the inferior vena cava via the internal iliac vein, bypassing the liver

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    Currarino, G.; Stannard, M.W. (Children' s Medical Center, Dallas, TX (United States). Dept. of Radiology Texas Univ., Dallas, TX (United States). Southwestern Medical Center); Kolni, H. (Methodist Hospital, Dallas, TX (United States). Dept. of Pediatrics)

    1991-05-01

    This is the third report of an anomalous umbilical vein draining ectopically in a left pelvic vein, probably the left internal iliac, and through the inferior vena cava into the right atrium. The anomaly was encountered in a newborn infant with nonimmune hydrops fetalis, hypertrophic cardiomyopathy, multiorgan failure and possibly Noonan Syndrome. (orig.).

  16. Lymphangioma of the spermatic cord

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    Campos, Antônio Carlos Ligocki; Costa, Marco Aurélio Raeder da; Salvalaggio, Paolo Rogério de Oliveira; Torres, Luiz Fernando Bleggi; Coelho, Júlio Cézar Uili

    1998-01-01

    We describe a case of a 22-year-old man that had been submitted to a left herniorraphy 11 years previously to the present admission. He returned to our hospital with another mass in the same side of the groin. At operation, several small cysts linked to the spermatic cord were demonstrated. At this time, an histological exam demonstrated the presence of conective tissue. The final histology report confirmed the diagnosis of lymphangioma of the spermatic cord in the groin region. The patient w...

  17. Right Site, Wrong Route - Cannulating the Left Internal Jugular Vein.

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    Paik, Peter; Arukala, Sanjay K; Sule, Anupam A

    2018-01-09

    Central venous catheters are placed in approximately five million patients annually in the US. The preferred site of insertion is one with fewer risks and easier access. Although the right internal jugular vein is preferred, on occasion, the left internal jugular may have to be accessed. A patient was admitted for septic shock, cerebrovascular accident, and non-ST-segment elevation myocardial infarction. A central venous line was needed for antibiotic and vasopressor administration. Due to trauma from a fall to the right side and previously failed catheterization attempts at the left subclavian and femoral veins, the left internal jugular vein was accessed. On chest radiography for confirmation, the left internal jugular central venous catheter was seen projecting down the left paraspinal region. It did not take the expected course across the midline toward the right and into the superior vena cava (SVC). A review of a computed tomography (CT) scan of the chest with contrast done on a prior admission revealed a duplicated SVC on the left side that had not been reported in the original CT scan interpretation. A left-sided SVC is present in approximately 0.3% to 0.5% of the population, with 90% of these draining into the coronary sinus. During placements of central venous lines and pacemakers, irritation of the coronary sinus may result in hypotension, arrhythmia, myocardial ischemia, or cardiac arrest. A widened mediastinum can be an indication of a duplicated SVC. When attempting a left internal jugular vein central venous catheter placement, it is important to be aware of venous anomalies in order to prevent complications.

  18. Ultrasound guidance for internal jugular vein cannulation: Continuing Professional Development.

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    Ayoub, Christian; Lavallée, Catherine; Denault, André

    2010-05-01

    The objective of this continuing professional development module is to describe the role of ultrasound for central venous catheterization and to specify its benefits and limitations. Although ultrasound techniques are useful for all central venous access sites, the focus of this module is on the internal jugular vein approach. In recent years, several studies were published on the benefits of ultrasound use for central venous catheterization. This technique has evolved rapidly due to improvements in the equipment and technology available. Ultrasound helps to detect the anatomical variants of the internal jugular vein. The typical anterolateral position of the internal jugular vein with respect to the carotid is found in only 9-92% of cases. Ultrasound guidance reduces the rate of mechanical, infectious, and thrombotic complications by 57%, and it also reduces the failure rate by 86%. Cost-benefit analyses show that the cost of ultrasound equipment is compensated by the decrease in the expenses associated with the treatment of complications. In this article, we will review the history of ultrasound guidance as well as the reasons that account for its superiority over the classical anatomical landmark technique. We will describe the equipment needed for central venous catheterization as well as the various methods to visualize with ultrasound. To improve patient safety, we recommend the use of ultrasound for central venous catheterization using the internal jugular approach.

  19. Spontaneous Internal Jugular Vein Thrombosis: A Case Report

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    Mustafa Serinken

    2010-12-01

    Full Text Available Internal jugular vein thrombosis (IJVT is an elusive vascular disease that is rarely seen, with potentially lethal complications such as sepsis and pulmonary embolism. Spontaneous IJVT is considered when no apparent predisposing cause of thrombosis is present. A previously healthy, 31-year-old woman presented to the university-based emergency department because of painless swelling in the right anterior side of her neck. Physical examination revealed a painless, soft and immobile mass in the right anterior side of her neck beneath the sternocleidomastoid muscle, without hyperemia or local heat. On ultrasonographic examination, a hyperechogenic mass was visualized around the thoracic entrance of the right internal jugular vein, which was suggestive of a thrombus. The patient was administered intravenous antibiotic and low-molecular-weight heparin followed by oral coumadin as anticoagulant therapy. Her complaints were relieved within 5 days. She was completely well after 6 months. Venous thrombosis generally results from impaired blood flow locally or systemically that leads to activation of coagulation. Primary care physicians should sustain a high index of suspicion in patients who present with undiagnosed swelling in the neck, or other signs and symptoms attributed to IJVT.

  20. Tuberculosis of the Spermatic Cord: Case Report

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    Amine Benjelloun

    2014-09-01

    Full Text Available The spermatic cord tuberculoma is uncommon, especially in its lower portion. Most cases were described in Japanese literature. We report a case of tuberculosis of the spermatic cord in a sexually active young man, revealed by a scrotal mass mimicking a tumor of the testicle and discuss the suitable diagnostic and therapeutic procedures, with preservation of the testes and the other sexual organs.

  1. Ultrasound guidance versus anatomical landmarks for internal jugular vein catheterization.

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    Brass, Patrick; Hellmich, Martin; Kolodziej, Laurentius; Schick, Guido; Smith, Andrew F

    2015-01-09

    Central venous catheters (CVCs) can help with diagnosis and treatment of the critically ill. The catheter may be placed in a large vein in the neck (internal jugular vein), upper chest (subclavian vein) or groin (femoral vein). Whilst this is beneficial overall, inserting the catheter risks arterial puncture and other complications and should be performed with as few attempts as possible. Traditionally, anatomical 'landmarks' on the body surface were used to find the correct place in which to insert catheters, but ultrasound imaging is now available. A Doppler mode is sometimes used to supplement plain 'two-dimensional' ultrasound. The primary objective of this review was to evaluate the effectiveness and safety of two-dimensional (imaging ultrasound (US) or ultrasound Doppler (USD)) guided puncture techniques for insertion of central venous catheters via the internal jugular vein in adults and children. We assessed whether there was a difference in complication rates between traditional landmark-guided and any ultrasound-guided central vein puncture.Our secondary objectives were to assess whether the effect differs between US and USD; whether the effect differs between ultrasound used throughout the puncture ('direct') and ultrasound used only to identify and mark the vein before the start of the puncture procedure (indirect'); and whether the effect differs between different groups of patients or between different levels of experience among those inserting the catheters. We searched the Central Register of Controlled Trials (CENTRAL) (2013, Issue 1), MEDLINE (1966 to 15 January 2013), EMBASE (1966 to 15 January 2013), the Cumulative Index to Nursing and Allied Health Literature (CINAHL) (1982 to 15 January 2013 ), reference lists of articles, 'grey literature' and dissertations. An additional handsearch focused on intensive care and anaesthesia journals and abstracts and proceedings of scientific meetings. We attempted to identify unpublished or ongoing studies

  2. Rare mycotic aneurysms of internal jugular vein and innominate vein secondary to untreated parapharyngeal abscess: A case report

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    Abdus Salam

    2017-07-01

    Full Text Available We report a 31 year old woman presented with three months history of large untreated parapharyngeal abscess and bleeding from the mouth. On evaluation chest CT scan identified the abscess extending down to the superior mediastinum and multiple small lung abscesses. Echocardiography showed tricuspid valve insufficiency. Patient was brought to the operating room (OR and intra-operatively it was found that she had multiple large mycotic pseudoaneurysms of the internal jugular vein and right brachiocephalic veins. All these pseudoaneurysms were repaired with pericardial patches under cardiopulmonary bypass. Patient did well in the short postoperative follow up and was then referred to plastic surgery and ENT for further surgical interventions.

  3. Percutaneous sclerotherapy of testicular vein insufficiency in persistent and recurrent varicocele

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    Sigmund, G.; Baehren, W.; Gall, H.; Thon, W.

    1986-01-01

    Among 1217 retrograde phlebographies of left-sided idiopathic varicoceles 66 patients presented because of persistence or recurrence of varicocele, 34 of them after operation and 32 after sclerotherapy. After operation without success there was always - except for one case - a reflux passing the site of ligature. If persistence or recurrence of varicocele occured after sclerotherapy, the testicular (internal spermatic) vein was most often found to be obliterated at the junction with the renal vein and the sonographically proven reflux went via collaterals or unidentified veins which prevented a repeat sclerotheraphy. In 12 out of 32 patients after sclerotherapy a persistent main stem of the testicular vein allowed a second attempt of sclerotherapy. If sclerotherapy in patients after operation or previous sclerotherapy could be performed, it was an effective, low risk procedure on an outpatient basis just as in primary sclerotherapy of testicular vein insufficiency causing varicocele. (orig.) [de

  4. Internal jugular vein: Peripheral vein adrenocorticotropic hormone ratio in patients with adrenocorticotropic hormone-dependent Cushing′s syndrome: Ratio calculated from one adrenocorticotropic hormone sample each from right and left internal jugular vein during corticotrophin releasing hormone stimulation test

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    Sachin Chittawar

    2013-01-01

    Full Text Available Background: Demonstration of central: Peripheral adrenocorticotropic hormone (ACTH gradient is important for diagnosis of Cushing′s disease. Aim: The aim was to assess the utility of internal jugular vein (IJV: Peripheral vein ACTH ratio for diagnosis of Cushing′s disease. Materials and Methods: Patients with ACTH-dependent Cushing′s syndrome (CS patients were the subjects for this study. One blood sample each was collected from right and left IJV following intravenous hCRH at 3 and 5 min, respectively. A simultaneous peripheral vein sample was also collected with each IJV sample for calculation of IJV: Peripheral vein ACTH ratio. IJV sample collection was done under ultrasound guidance. ACTH was assayed using electrochemiluminescence immunoassay (ECLIA. Results: Thirty-two patients participated in this study. The IJV: Peripheral vein ACTH ratio ranged from 1.07 to 6.99 ( n = 32. It was more than 1.6 in 23 patients. Cushing′s disease could be confirmed in 20 of the 23 cases with IJV: Peripheral vein ratio more than 1.6. Four patients with Cushing′s disease and 2 patients with ectopic ACTH syndrome had IJV: Peripheral vein ACTH ratio less than 1.6. Six cases with unknown ACTH source were excluded for calculation of sensitivity and specificity of the test. Conclusion: IJV: Peripheral vein ACTH ratio calculated from a single sample from each IJV obtained after hCRH had 83% sensitivity and 100% specificity for diagnosis of CD.

  5. Internal jugular vein access for the interventional management of nonfunctioning artero-venous haemodialysis fistulas

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    Basile, A. E-mail: antodoc@yahoo.com; Garcia Medina, J.; Lupattelli, T.; Garcia Medina, V.; Leal, R

    2004-12-01

    We report our experience and results with the use of internal jugular vein as secondary approach for the endovascular treatment of twelve nonfunctioning artero-venous (AV) fistulas in haemodialysis patients.

  6. A rare case of anastomosis between the external and internal jugular veins.

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    Karapantzos, Ilias; Zarogoulidis, Paul; Charalampidis, Charalampos; Karapantzou, Chrysanthi; Kioumis, Ioannis; Tsakiridis, Kosmas; Mpakas, Andrew; Sachpekidis, Nikolaos; Organtzis, John; Porpodis, Konstantinos; Zarogoulidis, Konstantinos; Pitsiou, Georgia; Zissimopoulos, Athanasios; Kosmidis, Christoforos; Fouka, Evagelia; Demetriou, Theodoros

    2016-01-01

    Jugular veins bring deoxygenated blood from the head back to the heart. There are two sets of external and internal veins. The external jugular vein receives the greater part of the blood from the cranium and the deep parts of the face. It commences from the substance of the parotid gland and runs down the neck at the posterior border of sternocleidomastoideus and ends in the subclavian vein in front of the scalenus anterior. The external jugular vein is covered by the platysma and its upper half runs parallel with the great auricular nerve. There is also another minor jugular vein, the anterior, draining the submaxillary region. In our patient, we recognized a shunt between the external and internal jugular veins. It appeared in the middle of the veins, between the pair of valves, which are placed ~2.5 cm above the termination of the vessel. The anastomosis was fully functional, and there was no problem in the blood pressure of the patient. Moreover, the shunt was not associated with any systemic disease.

  7. 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.

  8. Ultrasound monitoring in cannulation of the internal jugular vein: anatomic and technical considerations.

    Science.gov (United States)

    Docktor, B; So, C B; Saliken, J C; Gray, R R

    1996-06-01

    To examine the effect of variations in anatomic features and operator experience on the success and complication rates of sonographically monitored cannulation of the internal jugular vein. The authors prospectively collected data for ultrasound-monitored cannulation of the internal jugular vein in 150 patients. In all cases the radiologist recorded the side of puncture, the number of passes needed, the number of vein punctures (one or two), whether the walls were opposed during puncture and any complications. For the last 80 patients the following information was also recorded: the distance from the skin to the internal jugular vein, the diameter of the vein with the Valsalva manoeuvre and the location of the vein relative to the carotid artery. All but three of the cannulations were performed by one of three radiologists, all of whom had at least 5 years of experience. Cannulation was successful in all of the patients, and the first pass was successful in 133 (88.7%). These results are better than those of blind placement techniques reported in the literature. The only complications were hematoma and carotid puncture, which both occurred in the same two patients (1.3%). There was no significant difference among the radiologists in the number of passes needed (one-way analysis of variance, p > 0.05). The number of passes was independent of anatomic factors, including depth from skin, vein diameter or relative location. However, significantly more passes were needed for left-side punctures than for right-side punctures (Student t-test, p < 0.05). Real-time ultrasound monitoring is superior to blind techniques in cannulation of the internal jugular vein because of its ease, accuracy and safety. Sonographic real-time monitoring minimizes the impact of anatomic factors on success and complication rates. It is a safe and efficacious approach that should be preferred in the placement of central lines.

  9. Spermatic Cord Knot: A Clinical Finding in Patients with Spermatic Cord Torsion

    Directory of Open Access Journals (Sweden)

    Abdullatif Al-Terki

    2011-01-01

    Full Text Available Pertinent history taking and careful examination often taper the differentials of the acute scrotum; congruently the ability to diagnose acute spermatic cord torsion (SCT when radiological adjuncts are not available is highly imperative. This observational study serves to present a series of 46 cases of spermatic cord torsion whereby we hypothesize the identification of a clinical knot on scrotal examination as an important clinical aid in making a decision to surgical exploration in patients with acute and subacute SCT, especially in centers where imaging resources are unavailable.

  10. The Place of Spermatic Fascia Closure During Open Herniotomy in ...

    African Journals Online (AJOL)

    Conclusion: There is no demonstrable advantage or disadvantage in closing the spermatic fascia at herniotomy for children. We conclude that the choice to close or not to close the spermatic fascia at herniotomy for children should be at the discretion of the individual surgeon. Keywords: Children, closure, fascia, herniotomy ...

  11. Endovascular Treatment of an Iatrogenic Right Internal Jugular Vein- Right Subclavian Artery Fistula and Pseudoaneurysm During the Attempt of a Hemodialysis Catheter Insertion: A Case Report

    International Nuclear Information System (INIS)

    Cho, Eui Min; Kim, Hyun Lee; Kim, Dong Hyun

    2009-01-01

    Complications during the placement of a central venous catheter, via the right internal jugular vein puncture include local hematoma, hemothorax, pneumothorax, central vein thrombosis, and hemopericardium. Iatrogenic right internal jugular vein-right subclavian artery fistula with the formation of right subclavian artery pseudoaneurysms is an extremely rare complication in patients undergoing a central vein puncture. We report the case of a patient who developed a local hematoma at the vein puncture site and dyspnea due to a right internal jugular vein-subclavian artery fistula and a right subclavian artery pseudoaneurysm at the mediastinum after puncture of right internal jugular vein. The patient was successfully treated by embolization using microcoils

  12. Antithrombotic Treatment of Splanchnic Vein Thrombosis : Results of an International Registry

    NARCIS (Netherlands)

    Ageno, Walter; Riva, Nicoletta; Bang, Soo-Mee; Sartori, Maria Teresa; Grandone, Elvira; Beyer-Westendorf, Jan; Barillari, Giovanni; Di Minno, Matteo N. D.; Duce, Rita; Malato, Alessandra; Santoro, Rita; Poli, Daniela; Verhamme, Peter; Martinelli, Ida; Kamphuisen, Pieter W.; Alatri, Adriano; Oh, Doyeun; Amico, Elbio D.; Schulman, Sam; Dentali, Francesco

    2012-01-01

    Background: Treatment of splanchnic vein thrombosis (SVT) is a clinical challenge due to heterogeneity of clinical presentations, increased bleeding risk and lack of evidences from clinical trials. We carried out an international registry aimed to describe current treatment strategies and factors

  13. Bilateral external and internal pudendal veins embolization treatment for venogenic erectile dysfunction

    Directory of Open Access Journals (Sweden)

    Daniel Lee, BBA, BS

    2017-03-01

    Full Text Available Erectile dysfunction (ED or impotence is estimated to affect around 20-30 million men in the United States (Rhoden et al, 2002. Vascular etiology is purported to be the most prevalent cause of ED in the elderly population, with venogenic ED being the most common subtype (Shafik et al, 2007; Rebonato et al, 2014. A patient, who developed severe venogenic ED, was referred to interventional radiology after ineffective pharmaceutical treatments. Selective embolization of bilateral external and internal pudendal veins was performed through accessing the deep dorsal vein of penis. Subsequent venogram verified successful embolization with stasis within the outflow of the deep dorsal vein of penis. Close to 6 weeks after the procedure, the patient purports to be able to achieve approximately 65% of full penile erection and complete penile erection with penile stimulation and 0.25 mL injection of alprostadil after 25 minutes.

  14. Outcome of tunneled infusion catheters inserted via the right internal jugular vein

    International Nuclear Information System (INIS)

    Shin, Sung Wook; Do, Young Soo; Choo, Sung Wook; Yoo, Wi Kang; Choo, In Wook; Kim, Jae Hyung

    2003-01-01

    To assess the outcome of tunneled central venous catheter placement via the right internal jugular vein. Between June 2001 and May 2002, 670 consecutive Hickman catheters were placed in 654 patients via the right internal jugular vein. The procedural complications arising and follow-up data obtained from May to July 2002 were evaluated. The technical success rate for catheter placement was 99.9% (669/670). Procedural complications were limited to eight cases (1.2%), including three pneumothoraces, one early migration of the catheter, one clinically unimportant air embolism, one catheter injury, one catheter kinking and one primary malpositioning in the azygos vein. Catheter dwelling time ranged from 1 to 407 (mean 107.1) days. During the follow-up period, 416 catheter were removed for various reasons: treatment had ended (n=334), patients declined treatment or their drug regimen was changed (n=16), late complications arose (n=53), or other circumstances intervened (n=13). Late complications included 44 cases of catheter-related infection (6.6%), five of catheter migration (0.7%), two of catheter occlusion (0.3%), one of thrombophlebitis (0.15%), and one of catheter-related right atrial thrombosis (0.15%). Only one instance of symptomatic venous thrombosis or stenosis was noted, namely the one case of thrombophlebitis. Because the incidence of subsequent symptomatic venous thrombosis or stenosis is lower, the preferred route for tunneled central venous catheter placement is the right internal jugular vein

  15. Coil embolization of internal mammary artery injured during central vein catheter and cardiac pacemaker lead insertion

    Energy Technology Data Exchange (ETDEWEB)

    Chemelli, A.P. [Department of Radiology, Innsbruck Medical University, Anichstrasse 35, 6020 Innsbruck (Austria)], E-mail: Andreas.Chemelli@i-med.ac.at; Chemelli-Steingruber, I.E. [Department of Radiology, Innsbruck Medical University, Anichstrasse 35, 6020 Innsbruck (Austria); Bonaros, N. [Department of Cardiovascular Surgery, Innsbruck Medical University (Austria); Luckner, G. [Department of Anaesthesiology and Critical Care Medicine, Innsbruck Medical University (Austria); Millonig, G. [Department of Gastroenterology and Hepatology, Innsbruck Medical University (Austria); Seppi, K. [Department of Neurology, Innsbruck Medical University (Austria); Lottersberger, C.; Jaschke, W. [Department of Radiology, Innsbruck Medical University, Anichstrasse 35, 6020 Innsbruck (Austria)

    2009-08-15

    Purpose: This study describes several cases of endovascular coil embolization of the proximal internal mammary artery injured by blind approach to the subclavian vein for central venous catheter or pacemaker lead insertion. Materials and methods: We conducted a retrospective analysis of five patients with iatrogenic arterial lesions of the internal mammary artery (IMA). The lesions occurred in three patients from a puncture of the subclavian vein during insertion of a central venous catheter and in two patients from a puncture of the subclavian vein for insertion of a pacemaker lead. Four patients had acute symptoms of bleeding with mediastinal hematoma and hematothorax and one patient was investigated in a chronic stage. A pseudoaneurysm was detected in all five patients. All four acute and hemodynamic unstable patients required hemodynamic support. Results: In all patients, embolization was performed using a coaxial catheter technique, and a long segment of the IMA adjacent distally and proximally to the source of bleeding was occluded with pushable microcoils. In one patient, additional mechanically detachable microcoils were used at the very proximal part of the IMA. Microcoil embolization of the IMA was successful in all patients, and the source of bleeding was eliminated in all patients. Conclusion: Transarterial coil embolization is a feasible and efficient method in treating acute bleeding and pseudoaneurysm of the IMA and should be considered if mediastinal hematoma or hemathorax occurs after blind puncture of the subclavian vein.

  16. Calcified fibrous pseudotumor of spermatic cord

    International Nuclear Information System (INIS)

    Rodriguez Collar, Tomas Lazaro; Valdes Estevez, Brasily; Nagua Valencia, Miguel Angel; Salinas Olivares, Mercedes Rita

    2009-01-01

    Paratesticular tumors are infrequent and most are benigns. This a case presentation of a patient aged 24 with a history of good health coming to our consultation by presence of a hard and painless 4 cm tumor in right scrotum with a 6 months course. Scrotal ultrasound (US) showed a well circumscribed heterogeneous lesion separate of epididymis and the testis. Fine needle aspiration biopsy (FNAB) was not possible by hardness of tumor. A inguinal surgery was performed and the total tumor exeresis using freezing biopsy negative of malignancy. Final histopathological report was: calcified fibrous pseudotumor of spermatic cord. Patient's course has been satisfactory. Significance of inguinal surgery was confirmed for the paratesticular tumor approach, even more when FNAB it is not conclusive for diagnosis.(author)

  17. Success Rate and Complications of Internal Jugular Vein Catheterization With and Without Ultrasonography Guide

    OpenAIRE

    Karimi-Sari, Hamidreza; Faraji, Mehrdad; Mohazzab Torabi, Saman; Asjodi, Gholamreza

    2014-01-01

    Background: Central venous catheterization (CVC) is an important procedure in emergency departments (EDs). Despite existence of ultrasonography (US) devices in every ED, CVC is done using anatomical landmarks in many EDs in Iran. Objectives: This study aimed to compare the traditional landmark method vs. US-guided method of CVC placement in terms of complications and success rate. Patients and Methods: In this randomized controlled trial, patients who were candidate for internal jugular vein ...

  18. Painless inter epididymal testicular torsion of the spermatic cord

    Directory of Open Access Journals (Sweden)

    Salomon V. Romano

    2007-02-01

    Full Text Available Inter epididymal testicular torsion of the spermatic cord is extremely rare and usually diagnosed at surgery. We present an unusual case of spermatic cord torsion in a 14-year-old male patient. It is important to highlight that the torsion occurred only on the distal half of the epididymis leaving the head untwisted and edematous. In addition, the fact that this condition was painless made this case extremely rare and motivated our presentation.

  19. Painless inter epididymal testicular torsion of the spermatic cord

    OpenAIRE

    Salomon V. Romano; Haime S. Hernan; Norberto Fredotovich

    2007-01-01

    Inter epididymal testicular torsion of the spermatic cord is extremely rare and usually diagnosed at surgery. We present an unusual case of spermatic cord torsion in a 14-year-old male patient. It is important to highlight that the torsion occurred only on the distal half of the epididymis leaving the head untwisted and edematous. In addition, the fact that this condition was painless made this case extremely rare and motivated our presentation.

  20. A Case Report of Right Internal Jugular Vein Thrombosis with Acute Brucellosis

    Directory of Open Access Journals (Sweden)

    F. Keramat

    2014-07-01

    Full Text Available Introduction: Brucellosis is a common zoonotic disease which has a wide spectrum of clinical manifestations and complications in humans. Brucellosis is an endemic disease in Iran, and vein thrombosis is a rare complication of acute brucellosis. Case Report: A 58-year old woman admitted to the infectious diseases ward in Farshchian hospital had fever and severe headache beginning 15 days before admission. Moreover, she complained from fatigue, malaise, anorexia, skin lesions around the nose and cervical lym-phadenopathy. Sonogarphy of cervical soft tissues of the patient showed right internal jugu-lar vein thrombosis and numerous cervical lymphadenopathy in the right posteriocervical tri-angle. Doppler sonography of the cervical vessels of the patient showed thrombosis of the middle right internal jugular vein. The blood culture isolates were small gram-negative aero-bic coccobacilli in two separate cultures. Serologic tests of Wright, 2ME and IgG ELISA were positive in the patient. The patient was treated with doxycycline, rifampin and warfarin, and she improved completely after a 5 month follow-up. Conclusion: We should consider brucellosis in the patients with rare manifestations of brucel-losis such as vascular thrombosis in endemic areas because early diagnosis and treatment of the patients can decrease its complications and mortality rate. (Sci J Hamadan Univ Med Sci 2014; 21 (2:161-166

  1. Internal Jugular and Subclavian Vein Thrombosis in a Case of Ovarian Cancer

    Directory of Open Access Journals (Sweden)

    Hiroto Moriwaki

    2017-01-01

    Full Text Available Central venous catheter insertion and cancer represent some of the important predisposing factors for deep venous thrombosis (DVT. DVT usually develops in the lower extremities, and venous thrombosis of the upper extremities is uncommon. Early diagnosis and treatment of deep venous thrombosis are of importance, because it is a precursor of complications such as pulmonary embolism and postthrombotic syndrome. A 47-year-old woman visited our department with painful swelling on the left side of her neck. Initial examination revealed swelling of the region extending from the left neck to the shoulder without any redness of the overlying skin. Laboratory tests showed a white blood cell count of 5,800/mm3 and an elevated serum C-reactive protein of 4.51 mg/dL. Computed tomography (CT of the neck revealed a vascular filling defect in the left internal jugular vein to left subclavian vein region, with the venous lumina completely occluded with dense soft tissue. On the basis of the findings, we made the diagnosis of thrombosis of the left internal jugular and left subclavian veins. The patient was begun on treatment with oral rivaroxaban, but the left shoulder pain worsened. She was then admitted to the hospital and treated by balloon thrombectomy and thrombolytic therapy, which led to improvement of the left subclavian venous occlusion. Histopathologic examination of the removed thrombus revealed adenocarcinoma cells, indicating hematogenous dissemination of malignant cells.

  2. Thrombosis as a complication of pulmonary-artery catheterization via the internal jugular vein: prospective evaluation by phlebography

    International Nuclear Information System (INIS)

    Chastre, J.; Cornud, F.; Bouchama, A.; Viau, F.; Benacerraf, R.; Gibert, C.

    1982-01-01

    A prospective study was made to determine, by angiography, the incidence of internal jugular-vein thrombosis in 33 consecutive critically ill patients who required temporary monitoring with Swan-Ganz catheters via the internal jugular vein. Twenty-two patients (66 per cent) had venographic or autopsy evidence of internal jugular-vein thrombosis. There was a statistically significant difference between the group of patients without thrombosis (Group 1) and the group with thrombosis (Group 2) with regard to the duration of hemodynamic compromise. Fifteen patients in Group 2 (as compared with eight in Group 1) were treated with heparin infusion, but nevertheless evidence of deep-vein thrombosis developd. Thus, it is concluded that venous thrombosis is a frequent complication of temporary monitoring with the Swan-Ganz catheter, especially in patients whose circulatory function has been impaired for a prolonged period

  3. VENOUS SAMPLING FOR CUSHING DISEASE: COMPARISON OF INTERNAL JUGULAR VEIN AND INFERIOR PETROSAL SINUS SAMPLING.

    Science.gov (United States)

    Radvany, Martin G; Quinones-Hinojosa, Alfredo; Gallia, Gary L; Wand, Gary S; Salvatori, Roberto

    2016-09-01

    Because magnetic resonance imaging (MRI) fails to detect many adrenocorticotropic hormone (ACTH)-secreting pituitary adenomas, inferior petrosal sinus sampling (IPSS) is considered the gold standard to differentiate Cushing disease (CD) from ectopic ACTH secretion syndrome (EAS). Some authors have suggested internal jugular vein sampling (IJVS) as an alternative to IPSS. We simultaneously compared IJVS to IPSS in 30 consecutive patients referred for ACTH-dependent Cushing syndrome and equivocal MRI exams. Five sites were simultaneously sampled in each patient (right and left IPS, right and left IJV, and femoral vein) before and after the administration of corticotrophin-releasing hormone or desmopressin. The test was considered consistent with CD when the IPS to peripheral ratio was >2 at baseline or >3 after stimulus and the IJV to peripheral ratio was >1.7 at baseline or >2 after stimulus. In 27 of 30 patients, IPSS results were consistent with a central source of ACTH. Two of the other 3 patients had EAS (one lung carcinoid and one occult), and 1 patient had pathology-proven CD. The sensitivity of IPSS was 96.4%. Only 64.2% of these patients had results meeting criteria for a central source of ACTH by IJVS criteria. Twenty patients with centralizing IPPS have undergone pituitary surgery. Of these, the central origin of excessive ACTH was confirmed with certainty in 16 patients. Among these 16 patients, the IPSS sensitivity was 93.8%, whereas 5 patients had false-negative IJVS (68.7% sensitivity). These results do not support the routine use of IJVS in establishing if the pituitary is the source of excessive ACTH. ACTH = adrenocorticotropic hormone CD = Cushing disease CRH = corticotrophin-releasing hormone CS = Cushing syndrome DDAVP = desmopressin EAS = ectopic ACTH secretion IJVS = internal jugular vein sampling IPSS = inferior petrosal sinus sampling JVS = jugular venous sampling MRI = magnetic resonance imaging.

  4. Internal jugular vein adrenocorticotropic hormone estimation for diagnosis of adrenocorticotropic hormone-dependent Cushing′s syndrome: Ultrasound-guided direct jugular vein sample collection

    Directory of Open Access Journals (Sweden)

    Jaya Prakash Sahoo

    2012-01-01

    Full Text Available Aim of Study: To assess the utility of internal jugular vein (IJV / peripheral adrenocorticotropic hormone (ACTH gradient in determining the etiology of ACTH- dependent Cushing′s syndrome. Materials and Methods: Patients with ACTH-dependent Cushing′s syndrome, (except children less than 12 years, had IJV blood collection under ultrasound guidance using a linear 7 MHZ probe. Blood was collected with a 21 G needle at the level of mandible with the patient in supine position. Six ml of blood was collected sequentially from right and left internal jugular veins for ACTH and prolactin estimation. Peripheral blood for ACTH and prolactin was taken from a previously placed IV cannula in the antecubital vein. Results: Thirty patients (20 F, 10 M, age 14 to 50 yrs were enrolled for this study. Source of ACTH excess was pituitary in 22, ectopic ACTH in 4, and unknown in 4 cases. Using an IJV: Peripheral ACTH ratio of ≥ 1.6, 15 out of 22 Cushing′s disease patients were correctly identified. However, 1 out of 4 ectopic Cushing also had IJV: Peripheral ratio ≥ 1.6. Overall, it had sensitivity of 68% with specificity of 75% while MRI pituitary and HDDST had sensitivity of 86% and 59%, respectively, with specificity of 100% each. Conclusion: IJV: Peripheral ACTH gradient was observed in 68% of patients with Cushing′s disease. Simultaneous IJV and peripheral sample collection with CRH stimulation may improve sensitivity and specificity of this test.

  5. Correlation of Peripheral Vein Tumour Marker Levels, Internal Iliac Vein Tumour Marker Levels and Radical Prostatectomy Specimens in Patients with Prostate Cancer and Borderline High Prostate-Specific Antigen: A Pilot Study

    Energy Technology Data Exchange (ETDEWEB)

    Farrelly, Cormac, E-mail: farrellycormac@gmail.com [Hospital of the University of Pennsylvania, Perelman School of Medicine at the University of Pennsylvania, Division of Interventional Radiology, Department of Radiology (United States); Lal, Priti [University of Pennsylvania Perelman School of Medicine, Department of Pathology and Laboratory Medicine (United States); Trerotola, Scott O.; Nadolski, Gregory J.; Watts, Micah M. [Hospital of the University of Pennsylvania, Perelman School of Medicine at the University of Pennsylvania, Division of Interventional Radiology, Department of Radiology (United States); Gorrian, Catherine Mc. [Mater Misericordiae University Hospital, University College Dublin School of Medicine & Medical Science (Ireland); Guzzo, Thomas J. [University of Pennsylvania Perelman School of Medicine, Department of Urology and Surgery (United States)

    2016-05-15

    PurposeTo correlate prostate-specific antigen (PSA), free to total PSA percentage (fPSA%) and prostatic acid phosphatase (PAP) levels from peripheral and pelvic venous samples with prostatectomy specimens in patients with prostate adenocarcinoma and borderline elevation of PSA.Materials and MethodsIn this prospective institutional review board approved study, 7 patients with biopsy proven prostate cancer had a venous sampling procedure prior to prostatectomy (mean 3.2 days, range 1–7). Venous samples were taken from a peripheral vein (PVS), the right internal iliac vein, a deep right internal iliac vein branch, left internal iliac vein and a deep left internal iliac vein branch. Venous sampling results were compared to tumour volume, laterality, stage and grade in prostatectomy surgical specimens.ResultsMean PVS PSA was 4.29, range 2.3–6 ng/ml. PSA and PAP values in PVS did not differ significantly from internal iliac or deep internal iliac vein samples (p > 0.05). fPSA% was significantly higher in internal iliac (p = 0.004) and deep internal iliac (p = 0.003) vein samples compared to PVS. One of 7 patients had unilateral tumour only. This patient, with left–sided tumour, had a fPSA% of 6, 6, 6, 14 and 12 in his peripheral, right internal iliac, deep right internal iliac branch, left internal iliac and deep left internal iliac branch samples respectively. There were no adverse events.ConclusionfPSA%, unlike total PSA or PAP, is significantly higher in pelvic vein compared to peripheral vein samples when prostate cancer is present. Larger studies including patients with higher PSA values are warranted to further investigate this counterintuitive finding.

  6. Correlation of Peripheral Vein Tumour Marker Levels, Internal Iliac Vein Tumour Marker Levels and Radical Prostatectomy Specimens in Patients with Prostate Cancer and Borderline High Prostate-Specific Antigen: A Pilot Study

    International Nuclear Information System (INIS)

    Farrelly, Cormac; Lal, Priti; Trerotola, Scott O.; Nadolski, Gregory J.; Watts, Micah M.; Gorrian, Catherine Mc.; Guzzo, Thomas J.

    2016-01-01

    PurposeTo correlate prostate-specific antigen (PSA), free to total PSA percentage (fPSA%) and prostatic acid phosphatase (PAP) levels from peripheral and pelvic venous samples with prostatectomy specimens in patients with prostate adenocarcinoma and borderline elevation of PSA.Materials and MethodsIn this prospective institutional review board approved study, 7 patients with biopsy proven prostate cancer had a venous sampling procedure prior to prostatectomy (mean 3.2 days, range 1–7). Venous samples were taken from a peripheral vein (PVS), the right internal iliac vein, a deep right internal iliac vein branch, left internal iliac vein and a deep left internal iliac vein branch. Venous sampling results were compared to tumour volume, laterality, stage and grade in prostatectomy surgical specimens.ResultsMean PVS PSA was 4.29, range 2.3–6 ng/ml. PSA and PAP values in PVS did not differ significantly from internal iliac or deep internal iliac vein samples (p > 0.05). fPSA% was significantly higher in internal iliac (p = 0.004) and deep internal iliac (p = 0.003) vein samples compared to PVS. One of 7 patients had unilateral tumour only. This patient, with left–sided tumour, had a fPSA% of 6, 6, 6, 14 and 12 in his peripheral, right internal iliac, deep right internal iliac branch, left internal iliac and deep left internal iliac branch samples respectively. There were no adverse events.ConclusionfPSA%, unlike total PSA or PAP, is significantly higher in pelvic vein compared to peripheral vein samples when prostate cancer is present. Larger studies including patients with higher PSA values are warranted to further investigate this counterintuitive finding.

  7. Correlation of Peripheral Vein Tumour Marker Levels, Internal Iliac Vein Tumour Marker Levels and Radical Prostatectomy Specimens in Patients with Prostate Cancer and Borderline High Prostate-Specific Antigen: A Pilot Study.

    Science.gov (United States)

    Farrelly, Cormac; Lal, Priti; Trerotola, Scott O; Nadolski, Gregory J; Watts, Micah M; Gorrian, Catherine Mc; Guzzo, Thomas J

    2016-05-01

    To correlate prostate-specific antigen (PSA), free to total PSA percentage (fPSA%) and prostatic acid phosphatase (PAP) levels from peripheral and pelvic venous samples with prostatectomy specimens in patients with prostate adenocarcinoma and borderline elevation of PSA. In this prospective institutional review board approved study, 7 patients with biopsy proven prostate cancer had a venous sampling procedure prior to prostatectomy (mean 3.2 days, range 1-7). Venous samples were taken from a peripheral vein (PVS), the right internal iliac vein, a deep right internal iliac vein branch, left internal iliac vein and a deep left internal iliac vein branch. Venous sampling results were compared to tumour volume, laterality, stage and grade in prostatectomy surgical specimens. Mean PVS PSA was 4.29, range 2.3-6 ng/ml. PSA and PAP values in PVS did not differ significantly from internal iliac or deep internal iliac vein samples (p > 0.05). fPSA% was significantly higher in internal iliac (p = 0.004) and deep internal iliac (p = 0.003) vein samples compared to PVS. One of 7 patients had unilateral tumour only. This patient, with left-sided tumour, had a fPSA% of 6, 6, 6, 14 and 12 in his peripheral, right internal iliac, deep right internal iliac branch, left internal iliac and deep left internal iliac branch samples respectively. There were no adverse events. fPSA%, unlike total PSA or PAP, is significantly higher in pelvic vein compared to peripheral vein samples when prostate cancer is present. Larger studies including patients with higher PSA values are warranted to further investigate this counterintuitive finding.

  8. An Arteriovenous Fistula Between the Internal Mammary Artery and the Pulmonary Vein Following Blunt Chest Trauma

    International Nuclear Information System (INIS)

    Ito, T.; Sakamoto, Toshihisa; Norio, Hirofumi; Kaji, Tatsumi; Okada, Yoshiaki

    2005-01-01

    A 67-year-old man suffered a traffic accident and was transferred to an emergency hospital close to the scene. He was diagnosed to have bilateral pneumohemothorax with a lung contusion, an anterior fracture dislocation of the C6-vertebra and a cervical cord injury at the level of C7. On the 48th day, massive hemoptysis was suddenly recognized. He was transferred in a state of shock to our hospital to undergo hemostasis for the bleeding. On the day of admission, a selective arteriogram showed extravasation from the left bronchial artery, for which embolization was carried out using Gelfoam. In spite of this treatment, his hemoptysis continued. On the next day, a selective left internal mammary arteriogram showed an arteriovenous fistula between the left internal mammary artery and the left pulmonary vein without any apparent extravasation. The arteriovenous fistula was successfully embolized using platinum fiber coils. The patient no longer demonstrated any hemoptysis after embolization

  9. Acute Scrotum Following Traumatic Spermatic Cord Hematoma: A Case Report and Review

    Directory of Open Access Journals (Sweden)

    Pietro Pepe

    2015-03-01

    Full Text Available Acute scrotum constitutes the most common urological emergency secondary to spermatic cord torsion, testicular trauma, orchiepididymitis and hernias. We report a very rare case of unique traumatic spermatic cord hematoma following scrotum injury occurred during a football match. Clinical exam showed an increased volume of the left spermatic cord; the color Doppler ultrasound (CDU demonstrated left testicular ischemia secondary to a large spermatic cord hematoma that needs surgical exploration. Spermatic cord hematoma rarely induces acute scrotum, however it could be treated conservatively surgery is mandatory when pain is persistent or testicular ischemia is confirmed by CDU.

  10. Internal jugular vein thrombosis associated with venous hypoplasia and protein S deficiency revealed by ultrasonography.

    Science.gov (United States)

    Lim, Byung Gun; Kim, Young Min; Kim, Heezoo; Lim, Sang Ho; Lee, Mi Kyoung

    2011-12-01

    A 41-year-old woman, who had no thrombotic risk factors and past history except congenital scoliosis, underwent central venous catheterization (CVC) before correction of the scoliosis. When internal jugular vein (IJV) catheterization using the anatomical landmark technique failed, CVC under ultrasound guidance was tried. As a consequence, thrombosis and hypoplasia of the right IJV were incidentally detected by ultrasonography. Central venous catheters were then successfully placed in other veins under ultrasound guidance. Also, after examinations to rule out the possibility of pulmonary embolism and to clarify the causes of the IJV thrombosis, the patient was found to have protein S deficiency. CVC under ultrasound guidance should be recommended to prevent the failure of cannulation and complications such as thromboembolism in patients who could possibly have anomalies of vessels as a result of anatomical deformities caused by severe scoliosis, even if patients do not have thrombotic risk factors such as a history of central catheter insertion or intravenous drug abuse, cancer, advanced age, cerebral infarction, and left ventricular dysfunction. Also, if venous thrombosis is found in patients without predisposing risk factors, one should ascertain the cause of the hypercoagulable state, for example protein S deficiency, and perform appropriate treatment and prevention of venous thromboembolism.

  11. Testicular reperfusion injury, post ligation of the spermatic cord in ...

    African Journals Online (AJOL)

    This experiment was aimed at investigating the level of tissue regeneration following sanguineous reperfusion post ligation of the spermatic cord in dogs. A total of 5 adult Nigerian local dogs conditioned for 3 weeks, laboratorily evaluated twice weekly prior to surgery were maintained for 1month. Dogs were aseptically ...

  12. Non-Hodgkin's lymphoma of the spermatic cord

    DEFF Research Database (Denmark)

    Møller, Michael Boe

    1994-01-01

    Primary lymphomas of the spermatic cord (LSC) are rare and have only been described in 10 cases in the literature. The present study is a review of the clinicopathological features of LSC described in the cases reported in the literature and presents a new case. LSC is a tumour affecting middle...

  13. Percutaneous Antegrade Varicocele Embolization Via the Testicular Vein in a Patient with Recurrent Varicocele After Surgical Repair

    Energy Technology Data Exchange (ETDEWEB)

    Guevara, Carlos J., E-mail: guevarac@mir.wustl.edu; El-Hilal, Alexander H., E-mail: elhilala@mir.wustl.edu; Darcy, Michael D., E-mail: darcym@mir.wustl.edu [Washington University in St. Louis, Department of Radiology, School of Medicine (United States)

    2015-10-15

    This is a case report of an adolescent male who underwent surgical ligation for a left-sided varicocele that recurred 2 years later. Standard retrograde embolization via the left renal vein was not possible, because there was no connection from the renal vein to the gonadal vein following surgical ligation. The patient was treated via antegrade access of the spermatic vein at the inguinal level with subsequent coil embolization.

  14. Comparison of fractional flow reserve of composite Y-grafts with saphenous vein or right internal thoracic arteries.

    Science.gov (United States)

    Glineur, David; Boodhwani, Munir; Poncelet, Alain; De Kerchove, Laurent; Etienne, Pierre Yves; Noirhomme, Philippe; Deceuninck, Paul; Michel, Xavier; El Khoury, Gebrine; Hanet, Claude

    2010-09-01

    Composite Y-grafts, using the left internal thoracic artery as the inflow, allow a more efficient use of conduits without the need to touch a diseased ascending aorta. Among other conduits, the saphenous vein graft may be an alternative to the radial artery in elderly patients. We evaluated the hemodynamic characteristics of 17 composite Y-grafts made with the left internal thoracic artery anastomosed to the left anterior descending coronary artery in all cases and with either the free right internal thoracic artery (RITA group, n = 10) or a saphenous vein graft (SVG group, n = 7) implanted proximally to the left internal thoracic artery and distally to the circumflex territory 6 months after the operation. At baseline, the pressure gradient measured with a 0.014-inch pressure wire was minimal between the aorta and the internal thoracic artery stem (2 +/- 1 mm Hg), the internal thoracic artery and left anterior descending (4 +/- 2 mm Hg), the internal thoracic artery and left circumflex (3 +/- 1 mm Hg), and the saphenous vein graft and left circumflex (2 +/- 2 mm Hg). During hyperemia induced by adenosine, the pressure gradient increased significantly to 6 +/- 2 mm Hg in the internal thoracic artery stem, 9 +/- 4 mm Hg in the internal thoracic artery and left anterior descending artery, 9 +/- 3 mm Hg in the internal thoracic artery and left circumflex, and 7 +/- 4 mm Hg in the saphenous vein graft and left circumflex. Fractional flow reserve was 0.94 +/- 0.02 in internal thoracic artery stem, 0.90 +/- 0.04 mm Hg in the internal thoracic artery and left anterior descending, 0.91 +/- 0.03 mm Hg in the internal thoracic artery and left circumflex, and 0.92 +/- 0.06 mm Hg in the saphenous vein graft and left circumflex. No difference between the two types of composite Y-grafts was observed for pressure gradients or fractional flow reserve measured in internal thoracic artery stem or in distal branches. Composite Y-grafts with saphenous vein or right internal thoracic

  15. Thrombophlebitis of the internal jugular vein (Lemierre syndrome) - Clinical and CT findings

    International Nuclear Information System (INIS)

    Kim, Bo Yeon; Yoon, Dae Young; Lim, Kyoung Ja; Seo, Young Lan; Yun, Eun Joo; Choi, Chul Soon; Bae, Sang Hoon; Kim, Hyeong Chul; Kim, Eun Soo; Baek, Sora

    2013-01-01

    Background: Thrombophlebitis of the internal jugular vein (IJV) secondary to neck infection (so-called Lemierre syndrome) is a rare disease. Purpose: To evaluate the clinical and CT findings in patients with thrombophlebitis of the IJV. Material and Methods: The clinical and contrast-enhanced neck CT findings were retrospective analyzed in 10 patients (eight men, two women; mean age, 62.9±8.3 years) with thrombophlebitis of the IJV. Results: Five patients (50%) had complications, including pneumonia (n = 3), neck abscess (n = 1), and thrombophlebitis of cerebral venous sinus (n = 1). All patients, except two who were lost to follow-up, had improved after antibiotics and anticoagulation therapy. Nine (90%) patients had underlying infectious processes in the neck. Contrast-enhanced neck CT of 12 IJVs (five right, three left, and two bilateral) affected by thrombophlebitis demonstrated > 5 cm in length (n = 8, 67%), ovoid shape (n = 7, 58%), complete occlusion of the lumen (n = 10, 83%), circumferential (n = 11, 92%), smooth (n = 8, 67%), and thick (=4 mm) (n = 8, 67%) rim enhancement, and adjacent soft tissue swelling (n = 11, 92%). Conclusion: Contrast-enhanced CT is useful in the diagnosis of thrombophlebitis of the IJV; characteristic CT findings of this unusual entity may be the main clue to the correct diagnosis

  16. Internal jugular vein patency and treatment methods after neck dissection in patients with oral cancer

    International Nuclear Information System (INIS)

    Makiguchi, Takaya; Yokoo, Satoshi; Miyazaki, Hidetaka; Ogawa, Masaru; Takayama, Yu; Negishi, Akihide

    2014-01-01

    Stenosis and obstruction of the internal jugular vein (IJV) sometimes occur following modified radical neck dissection or selective neck dissection, in which the IJV is preserved. The objective of this study was to assess risk factors for stenosis or obstruction of the IJV following neck dissection. A total of 58 neck dissections performed in 51 patients by the same surgeon at Gunma University Hospital were retrospectively reviewed. The relationships of the patency of the IJV with gender, side of dissection, number of lymph node metastases, invasion out of the lymph node, radiotherapy, and reconstructive method were examined. The patency of the IJV was evaluated postoperatively using enhanced computed tomography. All cases with obstruction of the IJV received postoperative radiotherapy and neck dissection on the left side. Postoperative radiotherapy was a significant risk factor for obstruction of the IJV. Free flap reconstruction was not a risk factor for stenosis and obstruction. The rate of obstruction of the IJV was significantly decreased in cases with pectoral major musculocutaneous flap reconstruction or extended supraomohyoid neck dissection in which the muscle extensively covered the IJV. (author)

  17. Heritability of the dimensions, compliance and distensibility of the human internal jugular vein wall.

    Directory of Open Access Journals (Sweden)

    Adam Domonkos Tarnoki

    Full Text Available The elasticity of the internal jugular vein (IJV is a major determinant of cerebral venous drainage and right atrium venous return. However, the level of genetic determination of IJV dimensions, compliance and distensibility has not been studied yet.170 adult Caucasian twins (43 monozygotic [MZ] and 42 dizygotic [DZ] pairs were involved from the Italian twin registry. Anteroposterior and mediolateral diameters of the IJV were measured bilaterally by ultrasonography. Measurements were made both in the sitting and supine positions, with or without Valsalva maneuver. Univariate quantitative genetic modeling was performed.Genetic factors are responsible for 30-70% of the measured properties of IJV at higher venous pressure even after adjustment for age and gender. The highest level of inheritance was found in the supine position regarding compliance (62% and venous diameter during Valsalva (69%. Environmental and measurement-related factors instead are more important in the sitting position, when the venous pressure is low and the venous lumen is almost collapsed. The range of capacity changes between the lowest and highest intraluminal venous pressure (full distension range are mainly determined by genetic factors (58%.Our study has shown substantial heritability of IJV biomechanics at higher venous pressures even after adjustment for age and gender. These findings yield an important insight to what degree the geometric and elastic properties of the vascular wall are formed by genetic and by environmental factors in humans.

  18. Success rate and complications of internal jugular vein catheterization with and without ultrasonography guide.

    Science.gov (United States)

    Karimi-Sari, Hamidreza; Faraji, Mehrdad; Mohazzab Torabi, Saman; Asjodi, Gholamreza

    2014-12-01

    Central venous catheterization (CVC) is an important procedure in emergency departments (EDs). Despite existence of ultrasonography (US) devices in every ED, CVC is done using anatomical landmarks in many EDs in Iran. This study aimed to compare the traditional landmark method vs. US-guided method of CVC placement in terms of complications and success rate. In this randomized controlled trial, patients who were candidate for internal jugular vein catheterization, and referred to Baqiyatallah Hospital ED were randomly allocated into US-guided CVC and anatomical landmarks guided CVC groups. Central vein access time, number of attempts, success rate, and complications in each group were evaluated. Mann-Whitney U, chi-square and Fisher exact tests along with Pearson and Spearman correlation coefficients were used to analyze the data. Out of 100 patients, 56 were male and 44 were female. No significant differences were found between the US-guided and traditional landmark methods of CVC insertion in terms of age, gender, BMI, and site of catheter insertion. The mean access time was significantly lower in the US-guided group (37.12 ± 17.33 s vs. 63.42 ± 35.19 s, P < 0.001). The mean number of attempts was also significantly lower in the US-guided group (1.12 ± 0.3 vs. 1.58 ± 0.64 times, P < 0.001). Eighty-eight percent of patients in the US-guided group were catheterized in the first attempt, while 50% of patients in the traditional landmark group were catheterized in the second or more attempts (P < 0.001). The success rate was 100% in the US-guided group, while it was 88% in the landmark group (P = 0.013). Moreover, the rate of complications was significantly lower in the US-guided group (4% vs. 24%, P = 0.004). The US-guided method for CVC placement was superior to the traditional landmark method in terms of access time, number of attempts, success rate, and fewer complications.

  19. Factors associated with therapeutic strategies in patients with splanchnic vein thrombosis: Results of an international registry

    NARCIS (Netherlands)

    Riva, N.; Ageno, W.; Schulman, S.; Bang, S.M.; Sartori, M.T.; Grandone, E.; Beyer, J.; Barillari, G.; Di Minno, D.; Duce, R.; Malato, A.; Santoro, R.; Poli, D.; Verhamme, P.; Martinelli, I.; Kamphuisen, P.; Alatri, A.; Becattini, C.; Bucherini, E.; Piana, A.; De Stefano, V.; Dentali, F.

    2012-01-01

    Background Treatment of splanchnic vein thrombosis (SVT) is challenging due to the heterogeneous clinical presentation and the increased bleeding risk. We aimed to describe current treatment strategies and factors associated with therapeutic decisions. Materials and Methods Between May 2008 and

  20. Transvaginal duplex ultrasonography appears to be the gold standard investigation for the haemodynamic evaluation of pelvic venous reflux in the ovarian and internal iliac veins in women.

    Science.gov (United States)

    Whiteley, M S; Dos Santos, S J; Harrison, C C; Holdstock, J M; Lopez, A J

    2015-12-01

    To assess the suitability of transvaginal duplex ultrasonography to identify pathological reflux in the ovarian and internal iliac veins in women. A retrospective study of patients treated in 2011 and 2012 was performed in a specialised vein clinic. Diagnostic transvaginal duplex ultrasonography in women presenting with symptoms or signs of pelvic vein reflux were compared with the outcomes of treatment from pelvic vein embolisation. A repeat transvaginal duplex ultrasonography was performed 6 weeks later by a blinded observer and any residual reflux was identified. Results from 100 sequential patients were analysed. Mean age 44.2 years (32-69) with mode average parity of 3 (0-5 deliveries). Pre-treatment, 289/400 veins were refluxing (ovarian - 29 right, 81 left; internal iliac - 93 right, 86 left). Coil embolisation was successful in 86/100 patients and failed partially in 14/100 - 5 due to failure to cannulate the target vein. One false-positive diagnosis was made. Currently there is no accepted gold standard for pelvic vein incompetence. Comparing transvaginal duplex ultrasonography with the outcome from selectively treating the veins identified as having pathological reflux with coil embolisation, there were no false-negative diagnoses and only one false-positive. This study suggests that transvaginal duplex ultrasonography could be the gold standard in assessing pelvic vein reflux. © The Author(s) 2014.

  1. Internal Jugular Vein Cross-Sectional Area Enlargement Is Associated with Aging in Healthy Individuals.

    Directory of Open Access Journals (Sweden)

    Christopher Magnano

    Full Text Available Internal jugular vein (IJV narrowing has been implicated in central nervous system pathologies, however normal physiological age- and gender-related IJV variance in healthy individuals (HIs has not been adequately assessed.We assessed the relationship between IJV cross-sectional area (CSA and aging.This study involved 193 HIs (63 males and 130 females who received 2-dimensional magnetic resonance venography at 3T. The minimum CSA of the IJVs at cervical levels C2/C3, C4, C5/C6, and C7/T1 was obtained using a semi-automated contouring-thresholding technique. Subjects were grouped by decade. Pearson and partial correlation (controlled for cardiovascular risk factors, including hypertension, heart disease, smoking and body mass index and analysis of variance analyses were used, with paired t-tests comparing side differences.Mean right IJV CSA ranges were: in males, 41.6 mm2 (C2/C3 to 82.0 mm2 (C7/T1; in females, 38.0 mm2 (C2/C3 to 62.3 mm2 (C7/T1, while the equivalent left side ranges were: in males, 28.0 mm2 (C2/C3 to 52.2 mm2 (C7/T1; in females, 27.2 mm2 (C2/C3 to 47.8 mm2 (C7/T1. The CSA of the right IJVs was significantly larger (p<0.001 than the left at all cervical levels. Controlling for cardiovascular risk factors, the correlation between age and IJV CSA was more robust in males than in the females for all cervical levels.In HIs age, gender, hand side and cervical location all affect IJV CSA. These findings suggest that any definition of IJV stenosis needs to account for these factors.

  2. Selective internal radiation therapy compared with sorafenib for hepatocellular carcinoma with portal vein thrombosis

    Energy Technology Data Exchange (ETDEWEB)

    Edeline, Julien [Centre Eugene Marquis, Medical Oncology Department, Rennes (France); Inserm UMR991, Rennes (France); Crouzet, Laurence; Pracht, Marc; Boucher, Eveline [Centre Eugene Marquis, Medical Oncology Department, Rennes (France); Campillo-Gimenez, Boris [Centre Eugene Marquis, Clinical Research Department, Rennes (France); Rolland, Yan; Rohou, Tanguy [Centre Eugene Marquis, Imaging Department, Rennes (France); Guillygomarc' h, Anne [CHU Pontchaillou, Hepatology Department, Rennes (France); Boudjema, Karim [CHU Pontchaillou, Hepatobiliary Surgery, Rennes (France); Lenoir, Laurence [Centre Eugene Marquis, Nuclear Medicine Department, Rennes (France); Adhoute, Xavier [Hopital Saint-Joseph, Hepato-Gastroenterology Department, Marseille (France); Clement, Bruno [Inserm UMR991, Rennes (France); Blanc, Jean-Frederic [Hopital Saint-Andre, Hepato-Gastroenterology Department, Bordeaux (France); Garin, Etienne [Inserm UMR991, Rennes (France); Centre Eugene Marquis, Nuclear Medicine Department, Rennes (France)

    2016-04-15

    Tumoural portal vein thrombosis (PVT) is a major prognostic factor in hepatocellular carcinoma (HCC). The efficacy of sorafenib, the only treatment approved at an advanced stage, is limited. Based on previous data, selective internal radiation therapy (SIRT), or {sup 90}Y radioembolization, seems an interesting option. We aimed to compare both treatments in this population. We retrospectively compared patients treated in two centres for HCC with tumoural PVT. We compared overall survival (OS) between patients treated with SIRT and patients treated with sorafenib. Analyses were performed before and after 1:1 matching with a propensity score for controlling indication bias, using a Cox proportional hazards model. A total of 151 patients were analysed, 34 patients treated with SIRT and 117 patients treated with sorafenib only. In the whole population, SIRT was associated with a higher median OS as compared with sorafenib: 18.8 vs 6.5 months (log-rank p < 0.001). There was an imbalance of baseline characteristics between patients treated by SIRT and sorafenib, which justified patient matching with use of a propensity score: 24 patients treated with SIRT could be matched with 24 patients treated with sorafenib. OS was estimated with a median of 26.2 vs 8.7 months in patients treated with SIRT vs sorafenib, respectively (log-rank p = 0.054). Before and after patient matching, the adjusted hazard ratio related to treatment by SIRT was estimated at 0.62 [95 % confidence interval (CI) 0.39-0.97] (p = 0.037) and 0.40 (95 % CI 0.19-0.82) (p = 0.013), respectively. SIRT seems more effective than sorafenib in patients presenting with HCC and tumoural PVT. This hypothesis is being tested in prospective randomized trials. (orig.)

  3. Selective internal radiation therapy compared with sorafenib for hepatocellular carcinoma with portal vein thrombosis

    International Nuclear Information System (INIS)

    Edeline, Julien; Crouzet, Laurence; Pracht, Marc; Boucher, Eveline; Campillo-Gimenez, Boris; Rolland, Yan; Rohou, Tanguy; Guillygomarc'h, Anne; Boudjema, Karim; Lenoir, Laurence; Adhoute, Xavier; Clement, Bruno; Blanc, Jean-Frederic; Garin, Etienne

    2016-01-01

    Tumoural portal vein thrombosis (PVT) is a major prognostic factor in hepatocellular carcinoma (HCC). The efficacy of sorafenib, the only treatment approved at an advanced stage, is limited. Based on previous data, selective internal radiation therapy (SIRT), or 90 Y radioembolization, seems an interesting option. We aimed to compare both treatments in this population. We retrospectively compared patients treated in two centres for HCC with tumoural PVT. We compared overall survival (OS) between patients treated with SIRT and patients treated with sorafenib. Analyses were performed before and after 1:1 matching with a propensity score for controlling indication bias, using a Cox proportional hazards model. A total of 151 patients were analysed, 34 patients treated with SIRT and 117 patients treated with sorafenib only. In the whole population, SIRT was associated with a higher median OS as compared with sorafenib: 18.8 vs 6.5 months (log-rank p < 0.001). There was an imbalance of baseline characteristics between patients treated by SIRT and sorafenib, which justified patient matching with use of a propensity score: 24 patients treated with SIRT could be matched with 24 patients treated with sorafenib. OS was estimated with a median of 26.2 vs 8.7 months in patients treated with SIRT vs sorafenib, respectively (log-rank p = 0.054). Before and after patient matching, the adjusted hazard ratio related to treatment by SIRT was estimated at 0.62 [95 % confidence interval (CI) 0.39-0.97] (p = 0.037) and 0.40 (95 % CI 0.19-0.82) (p = 0.013), respectively. SIRT seems more effective than sorafenib in patients presenting with HCC and tumoural PVT. This hypothesis is being tested in prospective randomized trials. (orig.)

  4. Preoperative ultrasonographic findings of internal jugular veins and carotid arteries in kidney transplant recipients.

    Science.gov (United States)

    Choi, Ji Won; Kim, Gaab Soo; Lee, Seung Won; Park, Jeong Bo; Lee, Jeong Jin; Ko, Justin Sangwook

    2016-08-01

    Hemodialysis via the internal jugular vein (IJV) has been widely used for patients with end stage renal disease (ESRD) patients, as they have a higher risk of arterial diseases. We investigated the ultrasonographic findings of the IJV and carotid artery (CA) in recipients of kidney transplantation (KT) and identified factors influencing IJV/CA abnormalities. We enrolled 120 adult KT recipients. Patients in group A (n = 57) had a history of IJV hemodialysis, while those in group B (n = 63) were not yet on dialysis or undergoing dialysis methods not involving the IJV. The day before surgery, we evaluated the state of the IJV and CA using ultrasonography. We followed patients with IJV stenosis for six months after KT. Ultrasonography revealed that four patients (7%) in group A had IJV abnormalities, while no patients in group B had abnormalities (P = 0.118). Of the four patients with abnormalities, one with 57.4% stenosis normalized during follow- up. However, another patient with 90.1% stenosis progressed to occlusion, while the two patients with total occlusion remained the same. Twenty patients in group A (n = 11) and B (n = 9) had several CA abnormalities (P = 0.462). Upon multivariate analysis with stepwise selection, height and age were significantly correlated with IJV stenosis (P = 0.043, odds ratio = 0.9) and CA abnormality (P = 0.012, odds ratio = 1.1), respectively. IJV abnormalities (especially with a history of IJV hemodialysis) and CA abnormalities may be present in ESRD patients. Therefore, we recommend ultrasonographic evaluation before catheterization.

  5. The Monorail Technique to Overcome Difficult Anatomical Course During Implantation of Central Venous Port via the Left Internal Jugular Vein

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Eu Hyun, E-mail: doorihyun6@gmail.com; Oh, Jung Suk; Chun, Ho Jong; Lee, Hae Giu; Choi, Byung Gil, E-mail: cbg@catholic.ac.kr [The Catholic University of Korea, Department of Radiology, Seoul St. Mary’s Hospital (Korea, Republic of)

    2017-03-15

    PurposeThe study aimed to introduce a monorail technique to overcome difficult anatomical course via left internal jugular vein in implantable port insertion.MethodsFrom 2007 to 2016, a total of 9346 patients were referred for implantable port insertion in our interventional unit, among which 79 cases were requested to insert on the left side. Our monorail technique was applied only when the technical challenge of the catheter tip entering the azygos vein instead of the superior vena cava occurred (n = 7). The technique consists of puncturing at the distal tip of the port catheter with a 21-gauge micropuncture needle and advancing a 0.018-in. hair-wire to guide and provide support for pre-assembled port.ResultsThe monorail technique was performed in seven patients and all but one case were technically successful, showing a technical success rate of 85.7%. There were no immediate or delayed complications.ConclusionsThe monorail technique is helpful to overcome the difficult anatomical course via left internal jugular vein in implantable port insertion.

  6. The Monorail Technique to Overcome Difficult Anatomical Course During Implantation of Central Venous Port via the Left Internal Jugular Vein

    International Nuclear Information System (INIS)

    Kim, Eu Hyun; Oh, Jung Suk; Chun, Ho Jong; Lee, Hae Giu; Choi, Byung Gil

    2017-01-01

    PurposeThe study aimed to introduce a monorail technique to overcome difficult anatomical course via left internal jugular vein in implantable port insertion.MethodsFrom 2007 to 2016, a total of 9346 patients were referred for implantable port insertion in our interventional unit, among which 79 cases were requested to insert on the left side. Our monorail technique was applied only when the technical challenge of the catheter tip entering the azygos vein instead of the superior vena cava occurred (n = 7). The technique consists of puncturing at the distal tip of the port catheter with a 21-gauge micropuncture needle and advancing a 0.018-in. hair-wire to guide and provide support for pre-assembled port.ResultsThe monorail technique was performed in seven patients and all but one case were technically successful, showing a technical success rate of 85.7%. There were no immediate or delayed complications.ConclusionsThe monorail technique is helpful to overcome the difficult anatomical course via left internal jugular vein in implantable port insertion.

  7. The Monorail Technique to Overcome Difficult Anatomical Course During Implantation of Central Venous Port via the Left Internal Jugular Vein.

    Science.gov (United States)

    Kim, Eu Hyun; Oh, Jung Suk; Chun, Ho Jong; Lee, Hae Giu; Choi, Byung Gil

    2017-03-01

    The study aimed to introduce a monorail technique to overcome difficult anatomical course via left internal jugular vein in implantable port insertion. From 2007 to 2016, a total of 9346 patients were referred for implantable port insertion in our interventional unit, among which 79 cases were requested to insert on the left side. Our monorail technique was applied only when the technical challenge of the catheter tip entering the azygos vein instead of the superior vena cava occurred (n = 7). The technique consists of puncturing at the distal tip of the port catheter with a 21-gauge micropuncture needle and advancing a 0.018-in. hair-wire to guide and provide support for pre-assembled port. The monorail technique was performed in seven patients and all but one case were technically successful, showing a technical success rate of 85.7%. There were no immediate or delayed complications. The monorail technique is helpful to overcome the difficult anatomical course via left internal jugular vein in implantable port insertion.

  8. Measurement of the angle formed between the thalamostriate vein and internal cerebral vein in anteroposterior projection: A method of estimating the size of the lateral ventricle

    International Nuclear Information System (INIS)

    Choi, Il Soon; Yoo, Ho Joon; Kim, Myung Sung; Park, Kwang Joo

    1974-01-01

    The size and shape of the lateral ventricle are frequently altered by intracranial lesions, and this may be reflected on cerebral angiogram. The size and dilatation of the lateral ventricle may be estimate by the course of the thalamostirate vein (TSV) and the distance between the midline and the TSV in frontal projection, the course of the pericallosal artery and the distance between the venous angle and subependymal veins in lateral projection. However, little description can be found in the literature about the method of expressing the size and degree of dilatation of the lateral ventricle on cerebral angiogram. The authors have attempted to find out an easy way of precisely estimating the size of the lateral ventricle and to observe how it can be applied in the patients with various expanding intracranial lesions. We measured the angle formed between the internal cerebral vein (ICV) and the TSV in the anteroposterior roentgenograms of venous phase in normal group composed of 61 patients in whom no significant abnormality could be detected neurologically or by other methods, and in 18 patients with expanding intracranial lesions. The results obtained are as follows: 1. In the normal group, the average angle formed between the ICV and TSV on the anteroposterior angiogram obtained with the central beam projected making an angle of 10 to 15 .deg with the orbitomeatal line was 25.7 ± 3.9 .deg, ranging from 19 to 34 .deg. The angle measured from 20 to 30 in 85% of the normal group. There was no significant difference between the male and the female as well as between the children and adults. 2. The measurement of the angle was found to reflect faithfully the size of the lateral ventricle on the side examined, increasing as the lateral ventricle dilated. When the angle measures more than 33.deg. the lateral ventricle would certainly be dilated. The lateral ventricle can be taken as moderately dilated when the measurement exceeds 40.deg and as severely dilated when

  9. Internal jugular vein thrombosis due to heterozygote methylene tetrahydrofolate reductase (MTHFR) 1298C and Factor V G1691A mutations after a minor trauma

    OpenAIRE

    Gumussoy, Murat; Arslan, Ilker B.; Cukurova, Ibrahim; Uluyol, Sinan

    2014-01-01

    Internal jugular vein thrombosis usually appears in central venous catheterization, distant malignancies, hypercoagulation, infections, or secondary to ovarian hyperstimulation syndrome. A 44-year-old female patient presented to us with sore throat, and pain and swelling on the right side of her neck. She had a history of simple neck trauma 10 days ago. Ultrasonography and computed tomography showed bilateral multiple lymphadenopathies and right internal jugular vein thrombosis. Patient was p...

  10. The Adrenal Vein Sampling International Study (AVIS) for identifying the major subtypes of primary aldosteronism.

    NARCIS (Netherlands)

    Rossi, G.P.; Barisa, M.; Allolio, B.; Auchus, R.J.; Amar, L.; Cohen, D.; Degenhart, C.; Deinum, J.; Fischer, E.; Gordon, R.; Kickuth, R.; Kline, G.; Lacroix, A.; Magill, S.; Miotto, D.; Naruse, M.; Nishikawa, T.; Omura, M.; Pimenta, E.; Plouin, P.F.; Quinkler, M.; Reincke, M.; Rossi, E.; Rump, L.C.; Satoh, F.; Schultze Kool, L.J.; Seccia, T.M.; Stowasser, M.; Tanabe, A.; Trerotola, S.; Vonend, O.; Widimsky Jr, J.; Wu, K.D.; Wu, V.C.; Pessina, A.C.

    2012-01-01

    CONTEXT: In patients who seek surgical cure of primary aldosteronism (PA), The Endocrine Society Guidelines recommend the use of adrenal vein sampling (AVS), which is invasive, technically challenging, difficult to interpret, and commonly held to be risky. OBJECTIVE: The aim of this study was to

  11. Prognosis of cerebral vein and dural sinus thrombosis - Results of the International Study on Cerebral Vein and Dural Sinus Thrombosis (ISCVT)

    NARCIS (Netherlands)

    Ferro, José M.; Canhão, Patrícia; Stam, Jan; Bousser, Marie-Germaine; Barinagarrementeria, Fernando

    2004-01-01

    Background and Purpose - The natural history and long-term prognosis of cerebral vein and dural sinus thrombosis (CVT) have not been examined previously by adequately powered prospective studies. Methods - We performed a multinational ( 21 countries), multicenter ( 89 centers), prospective

  12. A traumatic dural arteriovenous fistula between the inferolateral trunk of the internal carotid artery and the ophthalmic vein: A case of transvenous coil embolization via the facial vein

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jun Young; Hong, Chang Ki; Suh, Sang Hyun [Dept. of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul (Korea, Republic of); Kim, Dong Ik [Dept. of of Radiology, CHA Bundang Medical Center, CHA University, Seongnam (Korea, Republic of)

    2017-05-15

    A 31-year-old man was admitted with exophthalmos. He suffered from progressive exophthalmos, bruit and conjunctival chemosis 7 days after head trauma caused by falling down. Cerebral angiography showed a dural arteriovenous fistula (DAVF) draining into the ophthalmic vein caused by tear in the inferolateral trunk, which is a rare presentation of traumatic DAVF. Selective transvenous coil embolization was performed via the facial vein without neurologic complications.

  13. A randomized comparison of the Saphenous Vein Versus Right Internal Thoracic Artery as a Y-Composite Graft (SAVE RITA) trial: early results.

    Science.gov (United States)

    Hwang, Ho Young; Kim, Jun Sung; Oh, Se Jin; Kim, Ki-Bong

    2012-11-01

    The Saphenous Vein Versus Right Internal Thoracic Artery as a Y-Composite Graft trial was designed to evaluate the saphenous vein compared with the right internal thoracic artery as a Y-composite graft anastomosed to the side of the left internal thoracic artery. In this early analysis, we compared early angiographic patency rates and clinical outcomes. From September 2008 to October 2011, 224 patients with multivessel coronary artery disease were randomized prospectively to undergo off-pump revascularization using the saphenous vein group (n = 112) or the right internal thoracic artery group (n = 112) as Y-composite grafts. Early postoperative (1.4 ± 1.1 days) angiographic patency and clinical outcomes were compared. There was 1 operative death in the right internal thoracic artery group. No statistically significant differences in postoperative morbidities, including atrial fibrillation and acute renal failure, were observed between the groups. The number of distal anastomoses using the side-arm Y-composite graft (saphenous vein vs right internal thoracic artery) were 2.3 ± 0.8 and 1.9 ± 0.7 in the saphenous vein and right internal thoracic artery groups, respectively (P < .001). A third conduit was used in 44 patients (saphenous vein group vs right internal thoracic artery group, 4/109 vs 40/110; P < .001) to extend the side-arm Y-composite graft for complete revascularization. Early angiography demonstrated an overall patency rate of 99.4% (771 of 776 distal anastomoses). Patency rates of the side-arm Y-composite graft (saphenous vein vs right internal thoracic artery) were 98.8% (245 of 248) and 99.5% (207 of 208) in the saphenous vein and right internal thoracic artery groups, respectively (P = .629). A third conduit was needed to extend the right internal thoracic artery composite graft and reach the target vessels in 36.4% (40/110) of the patients. The saphenous vein composite graft was comparable with the right internal thoracic artery composite graft

  14. Sex hormone levels in spermatic and peripheral venous blood in patients with varicocele

    International Nuclear Information System (INIS)

    Mai Mang; He Xuejun; Wang Luhua; Fang Lingli; Xi Baoshan; Hong Hanye; Yang Fengtao; She Shaoyi

    2003-01-01

    Objective: To study the mechanism of changes of plasma sex hormone levels in patients with varicocele. Methods: Plasma sex hormones (LH, FSH, T) levels in spermatic and peripheral venous blood in 25 patients with varicocele and 22 patients with inguinal hernia were measured and compared. Results: The plasma T levels of spermatic venous blood in varicocele group were lower than those in inguinal hernia group (p 0.05). Conclusion: The sex hormones concentrations in peripheral blood could be influenced by many factors, making interpretation difficult. The concentration of plasma sex hormone in spermatic venous blood might reflect the truth better

  15. The internal anatomy of the inferior vena cava with specific emphasis on the entrance of the renal, gonadal and lumbar veins.

    Science.gov (United States)

    Bubb, Kathleen; du Plessis, Maira; Hage, Robert; Tubbs, R Shane; Loukas, Marios

    2016-01-01

    Major tributaries such as the renal and adrenal veins have been studied extensively; however, tributaries of the infra-renal segment of the inferior vena cava (IVC) have not been given much attention. Accurate knowledge of the anatomy of these veins is necessary for improved efficacy of surgical interventions in the retroperitoneum. The aim of this study therefore was to provide a comprehensive picture of the internal anatomy of the tributaries of the infra-renal segment of the IVC. Dissection of the posterior abdominal wall was performed on 30 formalin-fixed cadavers. Endoscopic study was carried out followed by a midline venotomy on the anterior wall of the isolated IVC, the location and orientation of its tributaries and their ostia were observed and measurements taken. The results showed that while there was great variation in the drainage pattern of the lumbar veins, most lumbar veins had ostia located between L2 and L3 vertebrae irrespective of the location of renal and gonadal tributaries. Valves were found in 81.81 % of gonadal veins, in 56.60 % of all lumbar veins and discrete ostial valves in 14.81 % of renal veins. The location of the tributaries of the IVC was correlated with the vertebral levels. Empirical data regarding their ostio-valvular complexes were established, which put into question widely accepted concept of valveless tributaries. Our results may implicate surgical procedures in and around the retroperitoneal region.

  16. Direction of the J-Tip of the Guidewire to Decrease the Malposition Rate of an Internal Jugular Vein Catheter

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    Byeong jun Ahn

    2015-11-01

    Full Text Available Background We hypothesized that the direction of the J-tip of the guidewire during insertion into the internal jugular vein (IJV might determine its ultimate location. Methods In this study, 300 patients between the ages of 18 and 99 years who required central venous catheterization via IJV in the emergency department enrolled for randomization. IVJ catheterization was successful in 285 of 300 patients. An independent operator randomly prefixed the direction of the J-tip of the guidewire to one of three directions. Based on the direction of the J-tip, patients were allocated into three groups: the J-tip medial-directed group (Group A, the lateral-directed group (Group B, or the downward-directed group (Group C. Postoperative chest radiography was performed on all patients in order to visualize the location of the catheter tip. A catheter is considered malpositioned if it is not located in the superior vena cava or right atrium. Results Of the total malpositioned catheter tips (8 of 285; 2.8%, the majority (5 of 8; 62.5% entered the contralateral subclavian vein, 2 (25.0% were complicated by looping, and 1 (12.5% entered the ipsilateral subclavian vein. According to the direction of the J-tip of the guidewire, the incidence of malpositioning of the catheter tip was 4 of 92 in Group A (4.3%, 4 of 96 in Group B (4.2%, and there were no malpositions in Group C. There were no significant differences among the three groups (p = 0.114. Conclusions The direction of the J-tip of the guidewire had no statistically significant effect on incidence of malpositioned tips.

  17. A Study on Effects of the Transient Compression by Tightly Tied Necktie on Blood Flow in the Internal Jugular Veins Using 2D-PC MRA

    International Nuclear Information System (INIS)

    Kim, Keung Sik; Chung, Tae Sub; Lee, Bum Soo; Park, In Kook; Kim, Hyun Soo; Yoo, Beong Gyu

    2008-01-01

    The 25 healthy male volunteers aged from 20 to 50 years old have been employed in this study. 2D-PC MRA was performed to measure the velocity of the blood flow in the internal carotid artery and internal jugular veins using 3.0T MRI Whole body (signa VH/i GE). ECTRICKS-CEMRA was performed to evaluate the pattern of blood circulation from internal carotid artery to internal jugular vein. Using 2D-PC MRA, the cross-section of the 4th and 5th cervical discs was scanned with 24 cm FOV. Then the speed of blood flow was measured for internal carotid artery and internal jugular vein when the subject wears a necktie tightly and no tie. The average of maximum velocity of internal carotid arteries without a necktie was 72.13 cm/sec in the right side and 74.96 cm/sec in the left side (average 73.54 cm/sec in both sides) while the average of maximum velocity of internal jugular veins without a necktie was -34.45 cm/sec in the right side and -24.99 cm/sec in the left side (-29.72 cm/sec in both sides). However, when wearing a necktie tightly, the average of maximum velocity of internal carotid arteries was 61.35 cm/sec in the right side and 65.19 cm/sec in the left side (average 63.27 cm/sec in both sides) while the average of maximum velocity of internal jugular veins was -22.14 cm/sec in the right side and -17.93 cm/sec in the left side (-20.03 cm/sec in both sides). With the necktie tightly knotted, the average blood flow speed of both internal carotid arteries slightly decreased to 86% (63.27/73.54 cm/sec) compared to no tie case in which both internal jugularveins significantly went down to 67% (-20.03/-29.72 cm/sec). Thus it is suggested that wearing a necktie affects the circulation of internal jugular veins (33% decrease in blood flow speed) more significantly than that of internal carotid artery (14% decrease in blood flow speed). Without a necktie, ECTRICKS-CEMRA showed natural blood circulation patterns of internal carotid arteries and internal jugular veins without

  18. Extra Luminal Entrapment of Guide Wire; A Rare Complication of Central Venous Catheter Placement in Right Internal Jugular Vein.

    Science.gov (United States)

    Ansari, Md Abu Masud; Kumar, Naveen; Kumar, Shailesh; Kumari, Sarita

    2016-10-01

    Central venous Catheterization (CVC) is a commonly performed procedure for venous access. It is associated with several complications. We report a rare case of extra luminal entrapment of guide wire during CVC placement in right jugular vein. We report a case of 28 years old female patient presented in our emergency with history of entrapped guide wire in right side of neck during CVC. X-ray showed coiling of guide wire in neck. CT Angiography showed guide wire coursing in between common carotid artery and internal jugular vein (IJV), closely abutting the wall of both vessels. The guide wire was coiled with end coursing behind the esophageal wall. Guide wire was removed under fluoroscopic guide manipulation under local anesthesia. We want to emphasize that even though CVC placement is common and simple procedure, serious complication can occur in hands of untrained operator. The procedure should be performed under supervision, if done by trainee. Force should never be applied to advance the guide wire if resistance is encountered.

  19. Pelvic Vein Embolisation in the Management of Varicose Veins

    International Nuclear Information System (INIS)

    Ratnam, Lakshmi A.; Marsh, Petra; Holdstock, Judy M.; Harrison, Charmaine S.; Hussain, Fuad F.; Whiteley, Mark S.; Lopez, Anthony

    2008-01-01

    Pelvic vein incompetence is common in patients with atypical varicose veins, contributing to their recurrence after surgery. Therefore, refluxing pelvic veins should be identified and treated. We present our experience with pelvic vein embolisation in patients presenting with varicose veins. Patients presenting with varicose veins with a duplex-proven contribution from perivulval veins undergo transvaginal duplex sonography (TVUS) to identify refluxing pelvic veins. Those with positive scans undergo embolisation before surgical treatment of their lower limb varicose veins. A total of 218 women (mean age of 46.3 years) were treated. Parity was documented in the first 60 patients, of whom 47 (78.3%) were multiparous, 11 (18.3%) had had one previous pregnancy, and 2 (3.3%) were nulliparous. The left ovarian vein was embolised in 78%, the right internal iliac in 64.7%, the left internal iliac in 56.4%, and the right ovarian vein in 42.2% of patients. At follow-up TVUS, mild reflux only was seen in 16, marked persistent reflux in 6, and new reflux in 3 patients. These 9 women underwent successful repeat embolisation. Two patients experienced pulmonary embolisation of the coils, of whom 1 was asymptomatic and 1 was successfully retrieved; 1 patient had a misplaced coil protruding into the common femoral vein; and 1 patient had perineal thrombophlebitis. The results of our study showed that pelvic venous embolisation by way of a transjugular approach is a safe and effective technique in the treatment of pelvic vein reflux.

  20. Venous compression syndrome of internal jugular veins prevalence in patients with multiple sclerosis and chronic cerebro-spinal venous insufficiency.

    Science.gov (United States)

    Mandolesi, Sandro; Niglio, Tarcisio; Orsini, Augusto; De Sio, Simone; d'Alessandro, Alessandro; Mandolesi, Dimitri; Fedele, Francesco; d'Alessandro, Aldo

    2016-01-01

    Analysis of the incidence of Venous Compression Syndrome (VCS) with full block of the flow of the internal jugular veins (IJVs) in patients with Multiple Sclerosis and Chronic cerebro-spinal venous insufficiency. We included 769 patients with MS and CCSVI (299 males, 470 females) and 210 controls without ms and ccsvi (92 males, 118 females). each subject was investigated by echo-color-doppler (ecd). morphological and hemodynamic ecd data were recorded by a computerized mem-net maps of epidemiological national observatory on ccsvi and they were analyzed by mem-net clinical analysis programs. VCS of IJVs occurs in 240 subjects affected by CCSVI and MS (31% of total) and in 12 controls (6% of total). The differences between the two groups are statistical significant (X² = 36.64, pCerebro-Spinal Venous Insufficiency, Multiple Sclerosis, Venous Compression Syndrome.

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

    International Nuclear Information System (INIS)

    Jang, Jinhee; Kim, Bum-soo; Kim, Bom-yi; Choi, Hyun Seok; Jung, So-Lyung; Ahn, Kook-Jin; Byun, Jae Young

    2013-01-01

    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.)

  2. Migration to the pulmonary artery of nine metallic coils placed in the internal iliac vein for treatment of giant rectal varices

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    Wataru Yamasaki

    2012-07-01

    Full Text Available Transcatheter venous embolization with metallic coils is a safe and reliable method for the treatment of pelvic congestion syndrome and pelvic varicocele. While rare, coil migration to the pulmonary arteries is potentially fatal. We report the migration to the pulmonary artery of a cluster of nine metallic microcoils placed in the internal iliac vein to obliterate giant rectal varices. Our patient suffered no severe sequelae. To avoid coil migration to the pulmonary arteries, the coils chosen for placement must take into consideration the characteristics of the target vessels, particularly of larger veins.

  3. Development of spermatic granuloma in albino rats following administration of water extract of Heliotropium bacciferum Forssk.

    Science.gov (United States)

    Alanazi, Khalid; Alahmadi, Bassam A; Alhimaidi, Ahmed; Abou-Tarboush, Faisal M; Farah, Mohammad Abul; Mahmoud, Ahmed; Alfaifi, Mohamed

    2016-01-01

    A spermatic granuloma is a chronic inflammatory reaction produced in response to extravasated sperm within the intertubular connective tissue. The present study investigates the possible toxic effects of water extract of Heliotropium bacciferum on the reproductive system of male albino rats and the associated potential for the development of spermatic granulomas. H. bacciferum is a herbal plant used in traditional medicine and reported to have cytotoxic effects due to pyrrolizidine alkaloids. Histological examinations revealed no changes in the tissues of the testes, although, some changes were detected in the cauda epididymis, the most important of which was the development of small lesions of spermatic granulomas. Clear gaps were observed between the epithelial linings of the epididymal tubules.

  4. [A Case of Transverse Colon Cancer Metastasized to the Spermatic Cord after Resection of Peritoneal Dissemination].

    Science.gov (United States)

    Kikuchi, Isao; Kimura, Tomoaki; Azuma, Saya; Shimbo, Tomonori; Wakabayashi, Toshiki; Ota, Sakae; Sato, Tsutomu; Itoh, Seiji; Ishida, Toshiya; Sageshima, Masato

    2017-11-01

    We report a rare case of spermatic cord metastasis from colon cancer. A man in his 50s underwent extended right hemicolectomy for transverse colon cancer followed by resection of a peritoneal recurrence. After receiving adjuvant chemotherapy for 6 months, he became aware of a right inguinal mass. A spermatic cord tumor was noted on computed tomography(CT) and FDG/PET-CT. He underwent radical orchiectomy. The resected tumor was histologically compatible with the colon cancer. Although he received additional chemotherapy, right inguinal recurrence was resected 6 months after orchiectomy. Colon cancer is the second most common origin, after gastric cancer, of metastatic spermatic tumor. As several metastatic routes have been reported, peritoneal seeding is mostly suspected in this case.

  5. Malignant Mesothelioma of Spermatic Cord in an Elderly Man With a History of Asbestos Exposure.

    Science.gov (United States)

    D'Antonio, Antonio; Mastella, Federica; Colucci, Angelo; Silvestre, Gianmarco

    2016-01-01

    We report a case of malignant mesothelioma of the spermatic cord in 80-year-old man presented with retained testis, hydrocele, and right inguinal mass. The patient had a long history of asbestos exposure as a railway worker. The patient was submitted to inguinal radical orchiectomy. One year after surgery, the patient is alive without signs of disease. Malignant mesothelioma of spermatic cord is a very rare disease, but this diagnosis should be suspected in patient with a history of asbestos exposure. Copyright © 2015 Elsevier Inc. All rights reserved.

  6. Sclerotherapy of Varicose Veins and Spider Veins

    Science.gov (United States)

    ... Index A-Z Sclerotherapy of Varicose Veins and Spider Veins Sclerotherapy uses injections from a very fine, ... Sclerotherapy? What is Sclerotherapy of Varicose Veins and Spider Veins? Sclerotherapy is a minimally invasive treatment used ...

  7. Patient Factors But Not the Use of Novel Anticoagulants or Warfarin Are Associated With Internal Jugular Vein Access-Site Hematoma After Right Heart Catheterization.

    Science.gov (United States)

    Dasa, Osama; Shafiq, Qaiser; Ruzieh, Mohammed; Alhazmi, Luai; Al-Dabbas, Maen; Ammari, Zaid; Khouri, Samer; Moukarbel, George

    2017-12-01

    Right heart catheterization (RHC) is routinely performed to assess hemodynamics. Generally, anticoagulants are held prior to the procedure. At our center, anticoagulants are continued and ultrasound guidance is always used for internal jugular vein access. A micropuncture access kit is used to place a 5 or 6 Fr sheath using the modified Seldinger technique. Manual compression is applied for 10-15 min and the patient is observed for at least 2 hours after the procedure. In a retrospective analysis, we investigated the risk of bleeding complications associated with RHC via the internal jugular vein in patients with and without full anticoagulation. Our catheterization laboratory database was searched for adult patients who underwent RHC by a single operator between January 2012 and December 2015. A total of 571 patients were included in the analysis. Baseline characteristics, labs, relevant invasive hemodynamics, co-morbid conditions, and incidence of access-site hematoma are presented. Multivariable binary logistic regression was performed using IBM SPSS v. 23.0 software. Statistically significant associations with access-site hematoma were observed with body mass index (P=.02; 95% confidence interval [CI], 1.0-1.1), right atrial pressure (P=.03; 95% CI, 0.7-0.9), and dialysis dependence (P.99). The incidence of internal jugular vein access-site hematoma is small when using careful access techniques for RHC even with the continued use of novel oral anticoagulants and warfarin. Patient characteristics and co-morbid conditions are related to bleeding complications.

  8. Liposarcoma of the spermatic cord associated with scrotum lipoma: A case report and review of the literature

    Directory of Open Access Journals (Sweden)

    Gaku Yamamichi

    2018-03-01

    Full Text Available Liposarcoma of the spermatic cord is a rare disease and often mistakenly diagnosed as inguinal hernia, hydrocele, and lipoma. We report the case of a 58-year-old man who presented with persistent discomfort and swelling on the left inguinal region. He was diagnosed with left scrotum lipoma when he was 12 years old. He underwent high orchiectomy and wide resection of the inguinal tumor. Histopathological examination revealed a well-differentiated liposarcoma of the spermatic cord with negative resection margin and scrotum lipoma. To our knowledge, this is the first report of liposarcoma of the spermatic cord with scrotum lipoma in English literature.

  9. Liposarcoma of the spermatic cord associated with scrotum lipoma: A case report and review of the literature.

    Science.gov (United States)

    Yamamichi, Gaku; Nakata, Wataru; Yamamoto, Akinaru; Tsujimura, Go; Tsujimoto, Yuichi; Nin, Mikio; Tsujihata, Masao

    2018-03-01

    Liposarcoma of the spermatic cord is a rare disease and often mistakenly diagnosed as inguinal hernia, hydrocele, and lipoma. We report the case of a 58-year-old man who presented with persistent discomfort and swelling on the left inguinal region. He was diagnosed with left scrotum lipoma when he was 12 years old. He underwent high orchiectomy and wide resection of the inguinal tumor. Histopathological examination revealed a well-differentiated liposarcoma of the spermatic cord with negative resection margin and scrotum lipoma. To our knowledge, this is the first report of liposarcoma of the spermatic cord with scrotum lipoma in English literature.

  10. US-guided placement of temporary internal jugular vein catheters: immediate technical success and complications in normal and high-risk patients

    International Nuclear Information System (INIS)

    Oguzkurt, Levent; Tercan, Fahri; Kara, Gulcan; Torun, Dilek; Kizilkilic, Osman; Yildirim, Tulin

    2005-01-01

    Objective: : To evaluate the technical success and immediate complication rates of temporary internal jugular vein (IJV) haemodialysis catheter placement in normal and high-risk patients. Methods and materials: Two-hundred and twenty temporary internal jugular vein catheters inserted under ultrasound guidance in 172 patients were prospectively analyzed. Of 172 patients, 93 (54%) were males and 79 (46%) were females (age range, 18-83; mean, 56.0 years). Of 220 catheters, 171 (78%) were placed in patients who had a risk factor for catheter placement like patients with disorder of haemostasis, poor compliance, and previous multiple catheter insertion in the same IJV. Forty-seven (21.3%) procedures were performed on bed-side. A catheter was inserted in the right IJV in 178 procedures (80.9%) and left IJV in 42 procedures. Of 172 patients, 112 (65%) had only one catheter placement and the rest had had more than one catheter placement (range, 1-5). Results: Technical success was achieved in all patients (100%). Average number of puncture was 1.24 (range, 1-3). One hundred and eighty-three insertions (83.1%) were single-wall punctures, whereas 37 punctures were double wall punctures. Nine (4%) minor complications were encountered. Inadvertent carotid artery puncture without a sequel in four procedures (1.8%), oozing of blood around the catheter in three procedures (1.4%), a small hematoma in one procedure (0.4%), and puncture through the pleura in one procedure (0.4%) without development of pneumothorax. Oozing of blood was seen only in patients with disorder of haemostasis. Conclusion: Ultrasound-guided placement of internal jugular vein catheters is very safe with very high success rate and few complications. It can safely be performed in high-risk patients, like patients with disorders of haemostasis and patients with previous multiple catheter insertion in the same vein

  11. First report of a spermatic granuloma and varicocele in a marsupial: A Koala (Phascolarctos cinereus) Case Study.

    Science.gov (United States)

    Schultz, B K; Palmieri, C; Nicolson, V; Larkin, R; Keeley, T; McGowan, M; Johnston, S D

    2016-08-01

    This study reports the first documented clinical case of a spermatic granuloma and varicocele in a marsupial. Initial clinical presentation included gross morphological changes in the left scrotal cord, epididymis and testis. Ultrasonography of the scrotum and spermatic cord, and gross and histopathological examination after hemicastration, confirmed the condition as a spermatic granuloma affecting the left caput epididymis, with a varicocele in the left proximal spermatic cord, which was causing azoospermia and infertility. Semen quality and serum testosterone secretion following a GnRH challenge was assessed prior to, and following surgery. After hemi-castration, an increase in androgen secretion to within normal reference ranges for the koala was observed with a subsequent increase in semen production and sperm quality resulting in the sire of a pouch young, 12months later. Copyright © 2016 Elsevier Ltd. All rights reserved.

  12. Pre-operative Spermatic Cord Ultrasonography Helps to Reduce the Incidence of Metachronous Inguinal Hernia in Boys

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    Shoujiang Huang

    2018-06-01

    Full Text Available Background/purpose: Thickening of the spermatic cord is a clinical sign of an inguinal hernia. We therefore tested whether pre-operative spermatic cord ultrasonography could reduce the incidence of metachronous inguinal hernia (MIH.Methods: Boys under 2 years old with an initial unilateral inguinal hernia were enrolled in this study. In whom the width of the asymptomatic-sided spermatic cord was ≥0.5 cm, these patients underwent contralateral groin exploration. Age at initial operation, weight, initial operation side, the sonographic width of the spermatic cord, the operative findings and presence of MIH were recorded, and the relationship among them was studied. Boys in the US group underwent an open herniorrhaphy with pre-operative ultrasound examination; the non-US group included boys who did not undergo a pre-operative ultrasound examination. A receiver operator curve (ROC analysis was performed to evaluated predictive value of the sonographic width of the spermatic cord for contralateral hernia.Results: A total of 24 months' follow-up data were obtained from 1,793 boys (US group 1,162, non-US group 631. In the US group, the width of the hernia-sided spermatic cord (0.75 ± 0.18 cm was larger than the normal side (0.37 ± 0.05 cm, P < 0.001. And the width of normal side spermatic cord had no significant difference between the groups regarding other factors such as age and weight. In whom the width of the asymptomatic-sided spermatic cord was ≥0.5 cm, the corresponding incidence of CIH was 86.4% (57/66. The width of the spermatic cord predicted the presence of contralateral hernia with ROC area under the curve = 0.943 (95% CI = 0.919–0.966. The total incidence of MIH was 4.1% (74/1793. The incidence of MIH in the US group was 2.2% (25/1162 much lower than 7.8% (49/631 in the non-US group (P < 0.001. If the width of the asymptomatic-sided spermatic cord was 0.5 cm and 0.54 cm, the corresponding sensitivity was 0.682 and 0

  13. Outcomes of microincision vitrectomy surgery with internal limiting membrane peeling for macular edema secondary to branch retinal vein occlusion

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    Sato S

    2015-03-01

    Full Text Available Shimpei Sato,1 Maiko Inoue,2 Shin Yamane,2 Akira Arakawa,2 Mikiro Mori,1 Kazuaki Kadonosono2 1Department of Opthalmology, Toranomon Hospital, Tokyo, Japan; 2Department of Ophthalmology, Yokohama City University Medical Center, Yokohama, Japan Purpose: To evaluate the anatomic and functional effect of microincision vitrectomy surgery (MIVS with internal limiting membrane (ILM peeling for macular edema secondary to branch retinal vein occlusion (BRVO.Methods: The medical records of 101 eyes of 101 patients who had undergone MIVS with ILM peeling for macular edema secondary to BRVO were studied. Patients were classified into ischemic and non-ischemic BRVO based on angiograph. The best-corrected visual acuity (BCVA and central foveal thickness (CFT, determined by spectral domain optical coherence tomography, were evaluated at baseline and at 1, 3, 6, and 12 months postoperatively.Results: Preoperative mean logarithm of the minimum angle of resolution (logMAR BCVA ± standard deviation (SD was 0.52±0.43 and mean CFT ± SD was 489.4±224.9 µm. Postoperative mean BCVA ± SD values were 0.41±0.35, 0.35±0.41, 0.29±0.36, and 0.25±0.41, and mean CFT values were 370.1±148.9, 327.5±157.5, 310.9±154.9, and 274.4±135.3 µm at 1, 3, 6, 12 months, respectively. The mean BCVA was significantly improved at 3, 6, and 12 months postoperatively (all P<0.05, and the mean CFT was significantly decreased at all postoperative follow-up time points (all P<0.05. At the 12-month postoperative evaluation, BCVA had improved by 0.2 logMAR units in 50 eyes (60.0% with ischemic BRVO and in nine eyes (50.0% with non-ischemic BRVO. Six eyes (6.0% experienced recurrence or persistence of macular edema at 12 months postoperatively.Conclusion: MIVS with ILM peeling for macular edema secondary to BRVO is effective in improving visual acuity and foveal morphology with low recurrence of macular edema. Keywords: MIVS, ILM, BRVO, central foveal thickness, CFT

  14. A case of descending colon carcinoma metastasized to left spermatic cord, testis, and epididymis

    Science.gov (United States)

    Augustin, Herbert; Popper, Helmut; Pummer, Karl

    2012-01-01

    We report a case of descending colon carcinoma metastasized to the left spermatic cord, testis, and epididymis. A 77-year old male patient underwent a left hemicolectomy for a descending colon cancer. He was referred to our department because of swelling and pain of the left scrotum two years and six months after surgery. High left orchiectomy was performed. Histological examination revealed a metastasis of the colon carcinoma within the spermatic cord and epididymis approaching the testicle. Reports on metastatic cancer of the testis are scarce, because this metastatic cancer is extremely rare. In general, testicular pain is rare in the elderly. We suggest that any elder presenting with testicular pain deserves a complete clinical and diagnostic evaluation. PMID:24578939

  15. Percutaneous closure of patent ductus arteriosus via internal jugular vein in patient with interrupted inferior vena cava

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    Patel Nehal

    2009-01-01

    Full Text Available Transcatheter closure of patent ductus arteriosus (PDA using various occluders and coils via femoral vein is a well established therapeutic option. However, in patients with interrupted inferior vena cava (IVC it is not feasible to close the PDA percutaneously using traditional methods. We present a nine-year-old girl with IVC interruption in whom percutaneous closure of PDA was successfully accomplished via the transjugular approach.

  16. Sertoli cell index and spermatic reserves in adult captive African lions (Panthera leo, Linnaeus, 1758).

    Science.gov (United States)

    de Barros, João Bosco Gonçalves; de Paula, Tarcízio Antônio Rego; da Matta, Sérgio Luis Pinto; Fonseca, Cláudio César; Leite, Flaviana Lima Guião; Rossi, João Luiz; de Oliveira, Priscila Carvalho; da Costa, Eduardo Paulino

    2007-12-01

    The intrinsic yield of spermatogenesis and the supporting indexes of the Sertoli cells are the best indicators for the spermatic production capacity in a species. The aim of the present study was to quantify the intrinsic yield of the spermatogenetic process, as well as the Sertoli cell index and spermatic reserves. Testicular fragments of five adult African lions was fixed in 4% glutaric aldehyde, dehydrated at increasing alcohol concentrations, included into hydroxyethyl methacrylate, and were cut into 4 microm thickness. In the seminiferous epithelium of the African lions, 10.3 primary spermatocytes at pre-leptotene phase are produced by the type-A spermatogonia. During meiotic divisions, only 2.7 spermatids were produced from the primary spermatocytes. The general spermatogenesis production in the African lions was approximately 22.1 cells, and each Sertoli cell was able to sustain and maintain approximately 14.9 cells of the germinative line, from which 7.9 are round spermatids. A total of 103x10(6) spermatozoa are produced by each testis gram at each cycle of the seminiferous epithelium. The spermatic reserve of lion is below the amplitude observed in mammals.

  17. Varicose vein - noninvasive treatment

    Science.gov (United States)

    ... spider veins. These are small varicose veins. Salt water (saline) or a chemical solution is injected into the varicose vein. The vein will harden and then disappear. Laser treatment can be used on the surface of the skin. Small bursts ...

  18. Varicose vein stripping

    Science.gov (United States)

    ... stripping; Venous reflux - vein stripping; Venous ulcer - veins Patient Instructions Surgical wound care - open Varicose veins - what to ask your doctor Images Circulatory system References American Family Physician. Management of varicose veins. www.aafp.org/afp/2008/ ...

  19. What Are Varicose Veins?

    Science.gov (United States)

    ... Leer en español What Is Varicose (VAR-i-kos) veins are swollen, twisted veins that you can ... TA-ze-uhs), spider veins, varicoceles (VAR-i-ko-seals), and other vein problems. Telangiectasias Telangiectasias are ...

  20. Extra Luminal Entrapment of Guide Wire; A Rare Complication of Central Venous Catheter Placement in Right Internal Jugular Vein

    OpenAIRE

    Ansari, Md Abu Masud; Kumar, Naveen; Kumar, Shailesh; Kumari, Sarita

    2016-01-01

    Central venous Catheterization (CVC) is a commonly performed procedure for venous access. It is associated with several complications. We report a rare case of extra luminal entrapment of guide wire during CVC placement in right jugular vein. We report a case of 28 years old female patient presented in our emergency with history of entrapped guide wire in right side of neck during CVC. X-ray showed coiling of guide wire in neck. CT Angiography showed guide wire coursing in between common caro...

  1. Ectopic adrenal tissue of spermatic cord in a 3- year- old boy, an incidental finding during orchidopexy: A case report

    Directory of Open Access Journals (Sweden)

    Biserka Pigac

    2017-11-01

    Full Text Available Ectopic adrenal tissue is usually found in kidney and retroperitoneum, yet other locations are considered uncommon. Spermatic cord remains one of the sites where this entity is mostly incidentally found during surgical procedure in childhood. Macroscopically, it represents as yellowish, lipomatous nodule. We present a case of ectopic adrenal tissue of spermatic cord in a 3- year- old boy, found during orchidopexy of the right testicle. Histopathological analysis of the spermatic cord nodule revealed adrenal cortical tissue composed of zona fasciculata cells. Although usually being benign and asymptomatic, cases of hyperplasia, adenoma and carcinoma arising from ectopic adrenal tissue have been reported. Therefore, removal of this tissue, when detected, is recommended.

  2. Focus on Varicose Veins

    Science.gov (United States)

    ... because the valves of the veins no longer work. Under the pressure of gravity these veins can continue to expand and, in ... and to determine whether the vein valves are work- ing properly or have ... painless. How are varicose veins treated? Varicose veins are always ...

  3. Varicose Veins - Multiple Languages

    Science.gov (United States)

    ... Concerns and Discomforts of Pregnancy: Varicose Veins - English MP3 Concerns and Discomforts of Pregnancy: Varicose Veins - 简体中文 (Chinese, Simplified (Mandarin dialect)) MP3 Concerns and Discomforts of Pregnancy: Varicose Veins - English ...

  4. Spider Vein Removal

    Science.gov (United States)

    Spider veins: How are they removed? I have spider veins on my legs. What options are available ... M.D. Several options are available to remove spider veins — thin red lines or weblike networks of ...

  5. Prospective double-blind preoperative pain clinic screening before microsurgical denervation of the spermatic cord in patients with testicular pain syndrome.

    Science.gov (United States)

    Oomen, Robert J A; Witjens, Annemijke C; van Wijck, Albert J M; Grobbee, Diederik E; Lock, Tycho M T W

    2014-09-01

    Testicular pain syndrome (TPS), defined as an intermittent or constant pain in one or both testicles for at least 3 months, resulting in significant reduction of daily activities, is common. Microsurgical denervation of the spermatic cord (MDSC) has been suggested as an effective treatment option. The study population comprised 180 TPS patients admitted to our outpatient urology clinic between 1999 and 2011. On 3 different occasions, patients were offered a double-blind, placebo-controlled temporary blockade of the spermatic cord. A single blockade consisted of 10 mL 2% lidocaine, 10 mL 0.25% bupivacaine, or 10 mL 0.9% sodium chloride. If the results of these blockades were positive, MDSC was offered. All MDSCs were performed by a single urologist (M.T.W.T.L.) using an inguinal approach. Pain reduction was determined at prospective follow-up. This study evaluated 180 patients. Most patients (61.1%) had undergone a scrotal or inguinal procedure. Patients had complaints during sexual activities (51.7%), sitting (37.5%), and/or cycling (36.7%); 189 randomized blockades were offered to all patients. There was a positive response in 37% and a negative response in 51%. MDSC was performed on 58 testicular units, including 3 patients with a negative outcome of the blockades. At mean follow-up of 42.8 months, 86.2% had a ≥ 50% reduction of pain and 51.7% were completely pain free. MDSC is a valuable treatment option for TPS patients because in this study 86.2% experienced a ≥ 50% reduction of pain. To prevent superfluous diagnostics and treatment, it is mandatory to follow a systematic protocol in the treatment of TPS. Copyright © 2014 International Association for the Study of Pain. Published by Elsevier B.V. All rights reserved.

  6. Anesthetic effects of different volumes of lidocaine for spermatic cord block in cattle.

    Science.gov (United States)

    Neves, Ana C; Santos Júnior, Juracy Cb; Marucio, Rodrigo L; Midon, Monica; Luna, Stelio Pl

    2017-03-01

    To evaluate three volumes of lidocaine for spermatic cord block to perform castration in cattle. Randomized blinded clinical study. Thirty mixed-breed Nellore cattle, aged 28-40 months and weighing 395±21 (352-452) kg [mean±standard deviation (range)]. Cattle were restrained in a chute and allowed to stand without sedation. Three milliliters of 2% lidocaine without epinephrine were infiltrated subcutaneously at each site of scrotal incision in all animals. The animals were allocated to three groups of 10 animals each. Lidocaine 2% was injected into each spermatic cord using a volume of 2, 3 or 4 mL in groups A, B, or C, respectively. The total volumes of lidocaine used were 10, 12, and 14 mL in groups A, B, and C, respectively. The duration of surgery and the retraction of the testicle (scored as positive or negative according to retraction of the testicle) during the procedure were recorded. The data were statistically analyzed by one-way anova followed by Tukey's and chi-square tests. Differences were considered significant when pcastration and following incisional infiltration of lidocaine, in adult cattle weighing about 400 kg. Copyright © 2017 Association of Veterinary Anaesthetists and American College of Veterinary Anesthesia and Analgesia. Published by Elsevier Ltd. All rights reserved.

  7. Pars plana vitrectomy combined with internal limiting membrane peeling for recurrent macular edema due to branch retinal vein occlusion after antivascular endothelial growth factor treatments

    Directory of Open Access Journals (Sweden)

    Shirakata Y

    2016-02-01

    Full Text Available Yukari Shirakata,1 Kouki Fukuda,1 Tomoyoshi Fujita,1 Yuki Nakano,1 Hiroyuki Nomoto,2 Hidetaka Yamaji,3 Fumio Shiraga,4 Akitaka Tsujikawa1 1Department of Ophthalmology, Faculty of Medicine, Kagawa University, Miki-cho, 2Nomoto Eye Clinic, Himeji, 3Department of Ophthalmology, Shirai Eye Hospital, Mitoyo, 4Department of Ophthalmology, Okayama University, Okayama, Japan Purpose: To evaluate the anatomic and functional outcomes of pars plana vitrectomy combined with internal limiting membrane peeling for recurrent macular edema (ME due to branch retinal vein occlusion (BRVO after intravitreal injections of antivascular endothelial growth factor (anti-VEGF agents. Methods: Twenty-four eyes of 24 patients with treatment-naive ME from BRVO were treated with intravitreal injections of anti-VEGF agents. Recurred ME was treated with pars plana vitrectomy combined with internal limiting membrane peeling. Results: After the surgery, ME was significantly reduced at 1 month (P=0.031 and the reduction increased with time (P=0.007 at the final visit. With the reduction in ME, treated eyes showed a slow improvement in visual acuity (VA. At the final visit, improvement in VA was statistically significant compared with baseline (P=0.048. The initial presence of cystoid spaces, serous retinal detachment, or subretinal hemorrhage under the fovea, as well as retinal perfusion status, showed no association with VA improvement. However, the presence of epiretinal membrane showed a significant association with the visual recovery. Although eyes without epiretinal membrane showed visual improvement (-0.10±0.32 in logarithm of the minimum angle of resolution [logMAR], eyes with epiretinal membrane showed greater visual improvement (-0.38±0.12 in logMAR, P=0.012. Conclusion: For recurrent ME due to BRVO after anti-VEGF treatment, particularly when accompanied by epiretinal membrane, pars plana vitrectomy combined with internal limiting membrane peeling might be a

  8. Germ cells may survive clipping and division of the spermatic vessels in surgery for intra-abdominal testes

    DEFF Research Database (Denmark)

    Thorup, J M; Cortes, Dina; Visfeldt, J

    1999-01-01

    Laparoscopy is a well described modality that provides an accurate visual diagnosis upon which further management of intra-abdominal testes may be based. Laparoscopic ligation of spermatic vessels as stage 1 of the procedure is a natural extension of laparoscopy. A staged approach provides adequate...

  9. Compression of the superior mesenteric vein - a sign of acute internal herniation in patients with antecolic laparoscopic Roux-en-Y gastric bypass

    International Nuclear Information System (INIS)

    Maier, Jens; Herrasti Gallego, Amaya; Floyd, Andrea K.

    2017-01-01

    To investigate whether compression of the superior mesenteric vein (SMV) on computed tomography (CT) can serve as a valid sign of internal herniation (IH) in patients with antecolic laparoscopic Roux-en-Y gastric bypass (LRYGBP). With institutional review board approval, we performed a retrospective analysis of 41 patients with antecolic LRYGBP referred for acute CT of the abdomen with suspicion of IH or another cause of acute abdomen. CT scans were randomly reviewed for signs of IH by two radiologists in a blinded manner, and the findings were correlated with the results of the patients' bariatric workup. Sensitivity, specificity, and inter-observer agreement were calculated for each sign. Five patients were classified as having intermittent IH and were excluded. Eighteen patients were found to have IH at laparoscopy and served as the study group; 18 patients served as the control group. SMV compression had the best sensitivity (67 % for both reviewers) and inter-observer agreement (kappa = 0.82) of all investigated signs. The swirl sign showed a lower sensitivity (39 and 50 % respectively) and kappa (0.37). SMV compression is a reliable sign of IH in patients with antecolic LRYGBP. circle CT can help detect internal herniation after laparoscopic Roux-en-Y gastric bypass. (orig.)

  10. Compression of the superior mesenteric vein - a sign of acute internal herniation in patients with antecolic laparoscopic Roux-en-Y gastric bypass

    Energy Technology Data Exchange (ETDEWEB)

    Maier, Jens; Herrasti Gallego, Amaya [Koege Sygehus, Department of Radiology, Koege (Denmark); Floyd, Andrea K. [Holbaek Sygehus, Department of Abdominal Surgery, Holbaek (Denmark)

    2017-04-15

    To investigate whether compression of the superior mesenteric vein (SMV) on computed tomography (CT) can serve as a valid sign of internal herniation (IH) in patients with antecolic laparoscopic Roux-en-Y gastric bypass (LRYGBP). With institutional review board approval, we performed a retrospective analysis of 41 patients with antecolic LRYGBP referred for acute CT of the abdomen with suspicion of IH or another cause of acute abdomen. CT scans were randomly reviewed for signs of IH by two radiologists in a blinded manner, and the findings were correlated with the results of the patients' bariatric workup. Sensitivity, specificity, and inter-observer agreement were calculated for each sign. Five patients were classified as having intermittent IH and were excluded. Eighteen patients were found to have IH at laparoscopy and served as the study group; 18 patients served as the control group. SMV compression had the best sensitivity (67 % for both reviewers) and inter-observer agreement (kappa = 0.82) of all investigated signs. The swirl sign showed a lower sensitivity (39 and 50 % respectively) and kappa (0.37). SMV compression is a reliable sign of IH in patients with antecolic LRYGBP. circle CT can help detect internal herniation after laparoscopic Roux-en-Y gastric bypass. (orig.)

  11. Effects of the polypropylene mesh implanted through inguinotomy in the spermatic funiculus, epididium and testis of dogs

    Directory of Open Access Journals (Sweden)

    Goldenberg Alberto

    2005-01-01

    Full Text Available PURPOSE: To investigate the effects of polypropylene mesh, implanted by inguinotomy, in the spermatic funiculus, epididium and testis of dogs. METHODS: Eighteen dogs were considered (12-23 Kg, separated in three groups. Group A (n=7: left side (with mesh versus right side (without mesh; Group B (n=7: left side (without mesh versus right side (with mesh and Group C (n=4: without any surgical manipulation (control group. After being observed for 60 days, the animals were subjected to bilateral removal of the spermatic funiculus, epididium and testis that were submitted to histological analysis. During the re-operation, a macroscopic evaluation was performed. RESULTS: On the mesh side, we noted 100% of mesh adherence to the posterior wall of the inguinal canal, as well as the adherence of the spermatic funiculus to the mesh. A congestion of the pampiniform plexus was noted in three animals. Chronic inflammation reaction and foreign body reaction in the spermatic funiculus was observed in 100% of the animals. On the side that did not carry a mesh, chronic inflammatory reaction was observed in 71% of the animals. All the animals presented chronic inflammatory reaction in the deferent duct in the mesh side and in eleven animals in the side without the mesh. These alterations were not found in Group C. There was a considerable statistical reduction in the average difference of the diameter of the lumen of the deferent duct in the mesh side. In the epididium and testis, macro and microscopic alterations were not significant, although one animal presented a marked reduction of spermatogenesis on the mesh side. CONCLUSION: The polypropylene mesh, when in contact with the spermatic funiculus of dogs, causes a more intense chronic inflammatory reaction and a significant reduction in the diameter of the lumen of the deferent duct.

  12. 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.

  13. Decrease in spermatic parameters of mice treated with hydroalcoholic extract Tropaeolum tuberosum “mashua”

    Directory of Open Access Journals (Sweden)

    Jonathan H. Vásquez

    2012-10-01

    Full Text Available In this work, we provided a Tropaeolum tuberosum hydroalcoholic extract to male mice (780 mg kg-1 for 7, 14 and 21 days treatment, there was no significant difference in body weight gain, testes, epididymides and prostate weight (p> 0.05, nevertheless progressive motility decreased and immobile sperm count increased significantly after 21 days treatment (p <0.05. The sperm count in the epididymis cauda decreased in the 3 three assessments, concentration on 21 days treatment was significantly lower than those of 7 and 14 days treatments (p <0.05. Our results suggest, that T. tuberosum has a direct action on the male reproductive system decreasing spermatic parameters without exerting toxic effects on mice.

  14. Proposal for a new classification of variations in the iliac venous system based on internal iliac veins: a case series and a review of double and left inferior vena cava.

    Science.gov (United States)

    Hayashi, Shogo; Naito, Munekazu; Hirai, Shuichi; Terayama, Hayato; Miyaki, Takayoshi; Itoh, Masahiro; Fukuzawa, Yoshitaka; Nakano, Takashi

    2013-09-01

    There are many reports on variations in the inferior vena cava (IVC), particularly double IVC (DIVC) and left IVC (LIVC). However, no systematic report has recorded iliac vein (IV) flow patterns in the DIVC and LIVC. In this study, we examined IV flow patterns in both DIVC and LIVC observed during gross anatomy courses conducted for medical students and in previously reported cases. During the gross anatomy courses, three cases of DIVC and one case of LIVC were found in 618 cadavers. The IV flow pattern from these four cases and all other previously reported cases can be classified into one of the following three types according to the vein into which the internal iliac vein drained: the ipsilateral external IV; confluence of the ipsilateral external IV and IVC; and the communicating vein, which connects the IVC and the contralateral IVC or its iliac branch. This classification, which is based on the internal IV course, is considered to be useful because IV variations have the potential to cause clinical problems during related retroperitoneal surgery, venous interventional radiology, and diagnostic procedures for pelvic cancer.

  15. 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

  16. 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

    2014-12-01

    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. 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.

  17. Safety of Pregnancy After Cerebral Venous Thrombosis: Results of the ISCVT (International Study on Cerebral Vein and Dural Sinus Thrombosis)-2 PREGNANCY Study.

    Science.gov (United States)

    Aguiar de Sousa, Diana; Canhão, Patrícia; Crassard, Isabelle; Coutinho, Jonathan; Arauz, Antonio; Conforto, Adriana; Béjot, Yannick; Giroud, Maurice; Ferro, José M

    2017-11-01

    Pregnancy is associated with increased risk of venous thrombotic events, including cerebral venous thrombosis. We aimed to study the complications and outcome of subsequent pregnancies in women with previous cerebral venous thrombosis. Follow-up study of women with acute cerebral venous thrombosis at childbearing age included in a previously described cohort (International Study of Cerebral Vein and Dural Sinus Thrombosis). Patients were interviewed by local neurologists to assess rate of venous thrombotic events, pregnancy outcomes, and antithrombotic prophylaxis during subsequent pregnancies. A total of 119 women were included, with a median follow-up of 14 years. Eighty-two new pregnancies occurred in 47 women. In 83% (68 of 82), some form of antithrombotic prophylaxis was given during at least 1 trimester of pregnancy or puerperium. Venous thrombotic events occurred in 3 pregnancies, including 1 recurrent cerebral venous thrombosis. Two of the 3 women were on prophylactic low-molecular-weight heparin at the time of the event. Outcomes of pregnancies were 51 full-term newborns, 9 preterm births, 2 stillbirths, and 20 abortions (14 spontaneous). In women with prior cerebral venous thrombosis, recurrent venous thrombotic events during subsequent pregnancies are infrequent. © 2017 American Heart Association, Inc.

  18. Germ cells may survive clipping and division of the spermatic vessels in surgery for intra-abdominal testes

    DEFF Research Database (Denmark)

    Thorup, J M; Cortes, D; Visfeldt, J

    1999-01-01

    PURPOSE: Laparoscopy is a well described modality that provides an accurate visual diagnosis upon which further management of intra-abdominal testes may be based. Laparoscopic ligation of spermatic vessels as stage 1 of the procedure is a natural extension of laparoscopy. A staged approach provides...... studied 17 nonpalpable testes in 10 patients 1 year and 7 months to 13(1/2) years old. Results of testicular biopsies of 13 intra-abdominal testes taken at stages 1 and 2 of surgery were available for histological comparison. RESULTS: Median number of spermatogonia per tubular cross section...... of the biopsies taken at stage 2 was slightly lower (0.03) compared to the median number at stage 1 (0.06) of the operation but this difference was not significant (p = 0.2031). CONCLUSIONS: Our study shows that the spermatogonia may survive clipping and division of the spermatic vessels, although the number...

  19. Angiographic predictors of 3-year patency of bypass grafts implanted on the right coronary artery system: a prospective randomized comparison of gastroepiploic artery, saphenous vein, and right internal thoracic artery grafts.

    Science.gov (United States)

    Glineur, David; D'hoore, William; de Kerchove, Laurent; Noirhomme, Philippe; Price, Joel; Hanet, Claude; El Khoury, Gebrine

    2011-11-01

    Saphenous vein, in situ right gastroepiploic artery, and right internal thoracic artery grafts are routinely used to revascularize the right coronary artery. Little is known about the predictive value of objective preoperative angiographic parameters on midterm graft patency. We prospectively enrolled 210 consecutive patients undergoing coronary revascularization. Revascularization of the right coronary artery was randomly performed with the saphenous vein grafts in 81 patients and the right gastroepiploic artery in 92 patients. During the same study period, 37 patients received right coronary artery revascularization with the right internal thoracic artery used in a Y-composite fashion. All patients underwent a protocol-driven coronary angiogram 3 years after surgery. Preoperative angiographic parameters included minimum lumen diameter percent stenosis measured by quantitative angiography. A graft was considered "not functional" with patency scores of 0 to 2 and "functional" with patency scores of 3 or 4. Angiographic follow-up was 100% complete. A significant difference in the distribution of flow patterns was observed in the 3 groups. In multivariate analysis, the use of a saphenous vein graft was associated with superior graft functionality compared with the other conduits (odds ratio, 6.1; 95% confidence interval, 2.4-15). Graft function was negatively influenced by the minimum lumen diameter (odds ratio, 0.11; confidence interval, 0.05-0.25). In the right gastroepiploic artery and right internal thoracic artery groups, the proportion of functional grafts was higher when the minimum lumen diameter was below a threshold value in the third minimum lumen diameter quartile (0.64-1.30 mm). Preoperative angiography predicts graft patency in the right gastroepiploic artery and right internal thoracic artery, whereas the flow pattern in saphenous vein grafts is significantly less influenced by quantitative angiographic parameters. Copyright © 2011 The American

  20. 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.

  1. Minimally invasive anterior pelvic internal fixation: An anatomic study comparing Pelvic Bridge to INFIX.

    Science.gov (United States)

    Reichel, Lee M; MacCormick, Lauren M; Dugarte, Anthony J; Rizkala, Amir R; Graves, Sara C; Cole, Peter A

    2018-02-01

    Anterior external fixation for pelvic ring fractures has shown to effectively improve stability and reduce mortality. However, these fixators can be associated with substantial morbidity such as pin tract infection, premature loss of fixation, and decreased quality of life in patients. Recently, two new methods of subcutaneous anterior pelvic internal fixation have been developed; the INFIX and the Pelvic Bridge. These methods have the purported advantages of lower wound complications, less surgical site pain, and improved quality of life. We sought to investigate the measured distances to critical anatomic structures, as well as the qualitative and topographic differences notable during implantation of both devices in the same cadaveric specimen. The Pelvic Bridge and INFIX were implanted in eleven fresh cadavers. Distances were then measured to: the superficial inguinal ring, round ligament, spermatic cord, lateral femoral cutaneous nerve (LFCN), femoral nerve, femoral artery, and femoral vein. Observations regarding implantation and topography were also recorded. The INFIX had greater measured distances from all structures except for the LFCN, in which its proximity placed this structure at risk. Neither device appears to put other critical structures at risk in the supine position. Significant implantation and topographic differences exist between the devices. The INFIX application lacked "safety margins" concerning the LFCN in 10/11 (90.9%) specimens, while Pelvic Bridge placement lacked "safety margins" with regard to the right superficial ring (1/11, 9%) and the right spermatic cord (1/11, 9%). Both the Pelvic Bridge and INFIX lie at safe distances from most critical pelvic structures in the supine position, though INFIX application places the LFCN at risk. Copyright © 2017 Elsevier Ltd. All rights reserved.

  2. Spermatic feasibility after 20 years of freezing and refreezing: case study

    Directory of Open Access Journals (Sweden)

    Paulo Franco Taitson

    2010-08-01

    Full Text Available The aim of the present work was to study the spermatic feasibility after 20 years of freezing, thawing and refreezing. A young man affected by testicular cancer sought the sperm freezing service. After 20 years, the samples were thawed and frozen again. After two days, thawing and analysis of the material took place. Comparison of the findings showed activity reduction from the first thawing to the fresh semen 59.09%. For the second thawing it was 77.27%. Considering the morphology, first thawing showed a reduction of 44.64% in relation to fresh semen. In the second thawing, the reduction was of 75%. Spermatic motility decreased by 64.28% in relation to fresh semen and 92.85% at the level of second thawing. The patient had gone through in vitro fertilization in 2007, obtaining success in the first one attempt.Este trabalho mostra a viabilidade espermática após 20 anos de congelamento seminal, descongelamento e novo congelamento. Jovem do sexo masculino afetado por câncer testicular procurou o serviço para congelamento de espermatozóides. Após vinte anos, as amostras foram descongeladas e congeladas novamente. Após dois dias, realizou-se um novo descongelamento e análise do material. As comparações dos resultados mostraram uma redução da atividade do primeiro descongelamento ao semen fresco em 59,09%. A partir do segundo descongelamento era de 77,27%. Considerando a morfologia, o primeiro descongelamento mostrou uma redução de 44,64% em relação ao sêmen fresco. No segundo descongelamento, a redução foi de 75%. A motilidade espermática diminuiu 64,28% em relação ao semen fresco e 92,85% a nível do segundo descongelamento. O paciente passou por fertilização in vitro em 2007, obtendo sucesso na primeira tentativa.

  3. Spermatic Viability of Cryopreserved Semen of Piau swine breed analyzed by Thermo Resistant Test

    Directory of Open Access Journals (Sweden)

    Maurício Hoshino da Costa Barros

    2014-06-01

    Full Text Available ABSTRACT. Barros M.H.C., Shiomi H.H., Amorim L.S., Guimarães S.E.F., Lopes P.S., Siqueira J.B., Pinho R.O. & Guimarães J.D. [Spermatic Viability of Cryopreserved Semen of Piau swine breed analyzed by Thermo Resistant Test.] Viabilidade espermática de sêmen congelado de suínos da raça Piau avaliada pelo Teste de Termorresistência. Revista Brasileira de Medicina Veterinária 36(2:131-136, 2014. Departamento de Veterinária, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, s/n, Viçosa, MG 36571-000, Brasil. E-mail: hugoshiomi@hotmail.com The objective of this study was to verify three protocols of semen cryopreservation on spermatic viability after thawing from Piau swine breed (Sus scrofa, by thermo resistant test (TTR. Twenty two ejaculates from 5 Piau mature boars were collected by glove hand technique. To freezing, the ejaculates was split and submitted to three protocols (P: (P1 freezing method proposed by Furst et al. (2005, altered by diluent media, (P2 freezing method proposed by Furst et al. (2005, altered by cooled curve; and (P3 freezing method proposed by Ohata et al. (2001. After thawing, semen was submitted to TTR, been incubated at 37o C by 2 hours, motility sperm (MOT and vigor (VIG was analyzed at 30 minutes of interval. MOT and VIG after thawing was 20.9±12.4, 29.5±10.9 and 49.5±12.1%; 2.5±0.5, 2.9±0.4 and 3.4±0.4, respectively to P1, P2 and P3. The TTR results show gradually decrease of motility and vigor along 2 hours of test procedure utilized, with best average to protocol 3 at all time of analyze. The protocol 3 tested by Piau boars shows highest values in cellular semen cryopreservation.

  4. Bilateral Testicular Infarction from IgA Vasculitis of the Spermatic Cords

    Directory of Open Access Journals (Sweden)

    Mazen Toushan

    2017-01-01

    Full Text Available A 51-year-old man with type 2 diabetes mellitus and chronic obstructive pulmonary disease presented to the emergency room with increasing bilateral leg pain, rash, and scrotal swelling with pain. Skin biopsy from his thigh revealed IgA-associated vasculitis. Due to hematuria, a renal biopsy was performed and showed an IgA glomerulonephritis with focal fibrinoid necrosis and neutrophil accumulation. Bilateral orchiectomies were performed in two separate procedures ten and thirteen days after the renal biopsy, as a result of uncontrolled abscess formation in testicles. Microscopically, both testicles revealed large abscess formation destroying almost the entire testicular parenchyma without tumor cells. Spermatic cord margins were further scrutinized microscopically to show bilateral vasculitis in many small size vessels, confirmed by positive endothelial staining for IgA. Some of the affected arteries revealed central organizing thrombi with recanalization features, highly suggestive of vasculitis-associated thrombi formation, resulting in testicular ischemic infarction and abscess formation. We conclude that this adult patient developed a severe form of Henoch-Schönlein purpura, with vasculitis affecting multiple organs, including the most serious and unusual complication of bilateral testicular infarction.

  5. Metastasis of the epididymis and spermatic cord from pancreatic adenocarcinoma: A rare entity. Description of a case and revision of literature.

    Science.gov (United States)

    Di Franco, Carmelo Agostino; Rovereto, Bruno; Porru, Daniele; Zoccarato, Valeria; Regina, Cesare; Cebrelli, Tiziano; Fiorello, Nicolò; Viglio, Alessandra; Galvagno, Lavinia; Marchetti, Carlo; Ringressi, Andrea; Barletta, Davide; Giliberto, Giovanni

    2018-03-31

    Metastatic epididymal and spermatic cord adenocarcinoma from epithelial tumors are a rare condition. The most frequent primary cancers are prostate, lung, kidney, gastrointestinal tumors and breast. In literature, there are very low number of cases reporting metastasis from pancreatic cancer to epididymis and spermatic cord. We report a case of 70-years old man with history of left orchiectomy for undescended testicle, who presented to our department with a palpable nodule in the right scrotum. Scrotal ultrasound revealed an inhomogeneous hypoechoic nodule of epididymis and/or spermatic cord. Neoplastic markers showed high levels of CEA (carcinoembryonic antigen) and bHCG (beta Human Chorionic Gonadotropin). The patient underwent right surgical scrotal exploration with orchifunicolectomy. Pathologic examination revealed pathologic tissue showing rare glandular structures. Immunohistochemistry profile was compatible with malign epithelial neoplasm with glandular differentiation. Total body CT-scan revealed pathologic tissue in pancreas between head and body and a suspect pathologic lesion in liver and 18-FDG PET-scan confirmed the pancreatic neoplastic mass and a suspect secondary hepatic lesion. Biopsy of pancreatic pathologic area was positive for ductal pancreatic adenocarcinoma. The patient was sent to oncologic evaluation and started chemotherapy. Malignancies of epididymis and spermatic cord are rare entities and, in literature, very low number of cases of metastasis from pancreatic carcinoma to epididymis and spermatic cord are described. Early differential diagnosis is fundamental mostly in those patients with age range unusual for testis cancers.

  6. Sonographic evaluation of intravascular volume status: Can internal jugular or femoral vein collapsibility be used in the absence of IVC visualization?

    Directory of Open Access Journals (Sweden)

    Alistair Kent

    2015-01-01

    Full Text Available Introduction: Inferior vena cava collapsibility index (IVC-CI has been shown to correlate with both clinical and invasive assessment of intravascular volume status, but has important limitations such as the requirement for advanced sonographic skills, the degree of difficulty in obtaining those skills, and often challenging visualization of the IVC in the postoperative patient. The current study aims to explore the potential for using femoral (FV or internal jugular (IJV vein collapsibility as alternative sonographic options in the absence of adequate IVC visualization. Methods: A prospective, observational study comparing IVC-CI and Fem- and/or IJV-CI was performed in two intensive care units (ICU between January 2012 and April 2014. Concurrent M-mode measurements of IVC-CI and FV- and/or IJV-CI were collected during each sonographic session. Measurements of IVC were obtained using standard technique. IJV-CI and FV-CI were measured using high-frequency, linear array ultrasound probe placed in the corresponding anatomic areas. Paired data were analyzed using coefficient of correlation/determination and Bland-Altman determination of measurement bias. Results: We performed paired ultrasound examination of IVC-IJV (n = 39 and IVC-FV (n = 22, in 40 patients (mean age 54.1; 40% women. Both FV-CI and IJV-CI scans took less time to complete than IVC-CI scans (both, P < 0.02. Correlations between IVC-CI/FV-CI (R 2 = 0.41 and IVC-CI/IJV-CI (R 2 = 0.38 were weak. There was a mean -3.5% measurement bias between IVC-CI and IJV-CI, with trend toward overestimation for IJV-CI with increasing collapsibility. In contrast, FV-CI underestimated collapsibility by approximately 3.8% across the measured collapsibility range. Conclusion: Despite small measurement biases, correlations between IVC-CI and FV-/IJV-CI are weak. These results indicate that IJ-CI and FV-CI should not be used as a primary intravascular volume assessment tool for clinical decision support in

  7. Idiopathic Bilateral External Jugular Vein Thrombosis.

    Science.gov (United States)

    Hindi, Zakaria; Fadhel, Ehab

    2015-08-20

    Vein thrombosis is mainly determined by 3 factors, which constitute a triad called Virchow's triad: hypercoagulability, stasis, and endothelial injury. Venous thrombosis commonly occurs in the lower extremities since most of the blood resides there and flows against gravity. The veins of the lower extremities are dependent on intact valves and fully functional leg muscles. However, in case of valvular incompetency or muscular weakness, thrombosis and blood stasis will occur as a result. In contrast, the veins of the neck, specially the jugulars, have distensible walls which allow flexibility during respiration. In addition, the blood directly flows downward towards the heart. Nevertheless, many case reports mentioned the thrombosis of internal jugular veins and external jugular veins with identified risk factors. Jugular vein thrombosis has previously been associated in the literature with a variety of medical conditions, including malignancy. This report is of a case of idiopathic bilateral external jugular vein thrombosis in a 21 year-old male construction worker of Southeast Asian origin with no previous medical history who presented with bilateral facial puffiness of gradual onset over 1 month. Doppler ultrasound and computed tomography were used in the diagnosis. Further work-up showed no evidence of infection or neoplasia. The patient was eventually discharged on warfarin. The patient was assessed after 6 months and his symptoms had resolved completely. Bilateral idiopathic external jugular veins thrombosis is extremely rare and can be an indicator of early malignancy or hidden infection. While previous reports in the literature have associated jugular vein thrombosis with malignancy, the present case shows that external jugular vein thrombosis can also be found in persons without malignancy.

  8. Bilateral meandering pulmonary veins

    Energy Technology Data Exchange (ETDEWEB)

    Thupili, Chakradhar R.; Udayasankar, Unni [Pediatric Imaging, Imaging Institute Cleveland Clinic, Cleveland, OH (United States); Renapurkar, Rahul [Imaging Institute Cleveland Clinic, Thoracic Imaging, L10, Cleveland, OH (United States)

    2015-06-15

    Meandering pulmonary veins is a rare clinical entity that can be mistaken for more complex congenital syndromes such as hypogenetic lung syndrome. We report imaging findings in a rare incidentally detected case of bilateral meandering pulmonary veins. We briefly discuss the role of imaging in diagnosing this condition, with particular emphasis on contrast-enhanced CT. (orig.)

  9. Deep Vein Thrombosis

    African Journals Online (AJOL)

    OWNER

    Deep Vein Thrombosis: Risk Factors and Prevention in Surgical Patients. Deep Vein ... preventable morbidity and mortality in hospitalized surgical patients. ... the elderly.3,4 It is very rare before the age ... depends on the risk level; therefore an .... but also in the post-operative period. ... is continuing uncertainty regarding.

  10. Catheter Displacement into Inferior Epigastric Vein Causing Local Phlebitis and Cellulitis

    Directory of Open Access Journals (Sweden)

    Noriko Hattori

    2012-01-01

    Full Text Available Catheter insertion for intravenous hyperalimentation is a commonly and widely used clinical technique. When compared with the incidence of complications associated with insertions into the internal jugular vein or the subclavian vein, complications associated with insertions into the femoral vein are less frequent. In this paper, we describe a very rare complication of femoral vein catheter insertion—namely, catheter displacement into the inferior epigastric vein.

  11. A randomized comparison of the Saphenous Vein Versus Right Internal Thoracic Artery as a Y-Composite Graft (SAVE RITA) trial: One-year angiographic results and mid-term clinical outcomes.

    Science.gov (United States)

    Kim, Ki-Bong; Hwang, Ho Young; Hahn, Seokyung; Kim, Jun Sung; Oh, Se Jin

    2014-09-01

    The Saphenous Vein Versus Right Internal Thoracic Artery as a Y-Composite Graft (SAVE RITA) trial was designed to evaluate the noninferiority of the saphenous vein (SV) compared with the right internal thoracic artery ([R]ITA) used as a Y-composite graft. A total of 224 patients who had undergone off-pump revascularization for multivessel coronary artery disease using the SV or RITA as a Y-composite graft based on the in situ left ITA were assigned randomly to the SV Y-composite graft (SV group, n = 112) or free RITA Y-composite graft (RITA group, n = 112). The primary endpoint was the 1-year angiographic patency rate of the second limb conduits (SV or RITA). Postoperative 1-year coronary angiograms were performed in 215 patients (SV group, 108; RITA group, 107). The overall graft patency rate was 97.4% (745 of 765) at 1 year (97.9% in the SV group vs 96.9% in the RITA group, P = .362). The primary endpoint of the study, the 1-year patency rate of the SV composite grafts, was 97.1% (238 of 245) and was noninferior to that of the RITA composite grafts (97.1% [198 of 204]) with a 95% lower confidence limit of -2.6% (P RITA composite grafts in terms of the 1-year angiographic patency rates. Copyright © 2014 The American Association for Thoracic Surgery. Published by Mosby, Inc. All rights reserved.

  12. Percutaneous Placement of Central Venous Catheters: Comparing the Anatomical Landmark Method with the Radiologically Guided Technique for Central Venous Catheterization Through the Internal Jugular Vein in Emergent Hemodialysis Patients

    Energy Technology Data Exchange (ETDEWEB)

    Koroglu, M.; Demir, M.; Koroglu, B.K.; Sezer, M.T.; Akhan, O.; Yildiz, H.; Yavuz, L.; Baykal, B.; Oyar, O. [Suleyman Demirel Univ., Isparta (Turkey). Depts. of Radiology, Internal Medicine and Anesthesiology

    2006-02-15

    Purpose: To compare the success and immediate complication rates of the anatomical landmark method (group 1) and the radiologically (combined real-time ultrasound and fluoroscopy) guided technique (group 2) in the placement of central venous catheters in emergent hemodialysis patients. Material and Methods: The study was performed prospectively in a randomized manner. The success and immediate complication rates of radiologically guided placement of central venous access catheters through the internal jugular vein (n = 40) were compared with those of the anatomical landmark method (n 40). The success of placement, the complications, the number of passes required, and whether a single or double-wall puncture occurred were also noted and compared. Results: The groups were comparable in age and sex. The indication for catheter placement was hemodialysis access in all patients. Catheter placement was successful in all patients in group 2 and unsuccessful in 1 (2.5%) patient in group 1. All catheters functioned adequately and immediately after the placement (0% initial failure rate) in group 2, but 3 catheters (7.5% initial failure rate) were non-functional just after placement in group 1. The total number of needle passes, double venous wall puncture, and complication rate were significantly lower in group 2. Conclusion: Percutaneous central venous catheterization via the internal jugular vein can be performed by interventional radiologists with better technical success rates and lower immediate complications. In conclusion, central venous catheterization for emergent dialysis should be performed under both real-time ultrasound and fluoroscopic guidance.

  13. Preventing Deep Vein Thrombosis

    Science.gov (United States)

    ... Physicians Contact Us My ACOG ACOG Departments Donate Shop Career Connection Home Clinical Guidance & Publications Practice Management ... skin. A clot also can form if blood flow is too slow the lining of a vein ...

  14. Portal vein thrombosis.

    Science.gov (United States)

    Chawla, Yogesh K; Bodh, Vijay

    2015-03-01

    Portal vein thrombosis is an important cause of portal hypertension. PVT occurs in association with cirrhosis or as a result of malignant invasion by hepatocellular carcinoma or even in the absence of associated liver disease. With the current research into its genesis, majority now have an underlying prothrombotic state detectable. Endothelial activation and stagnant portal blood flow also contribute to formation of the thrombus. Acute non-cirrhotic PVT, chronic PVT (EHPVO), and portal vein thrombosis in cirrhosis are the three main variants of portal vein thrombosis with varying etiological factors and variability in presentation and management. Procoagulant state should be actively investigated. Anticoagulation is the mainstay of therapy for acute non-cirrhotic PVT, with supporting evidence for its use in cirrhotic population as well. Chronic PVT (EHPVO) on the other hand requires the management of portal hypertension as such and with role for anticoagulation in the setting of underlying prothrombotic state, however data is awaited in those with no underlying prothrombotic states. TIPS and liver transplant may be feasible even in the setting of PVT however proper selection of candidates and type of surgery is warranted. Thrombolysis and thrombectomy have some role. TARE is a new modality for management of HCC with portal vein invasion.

  15. 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...

  16. 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.

  17. [Deep vein thrombosis prophylaxis.

    Science.gov (United States)

    Sandoval-Chagoya, Gloria Alejandra; Laniado-Laborín, Rafael

    2013-01-01

    Background: despite the proven effectiveness of preventive therapy for deep vein thrombosis, a significant proportion of patients at risk for thromboembolism do not receive prophylaxis during hospitalization. Our objective was to determine the adherence to thrombosis prophylaxis guidelines in a general hospital as a quality control strategy. Methods: a random audit of clinical charts was conducted at the Tijuana General Hospital, Baja California, Mexico, to determine the degree of adherence to deep vein thrombosis prophylaxis guidelines. The instrument used was the Caprini's checklist for thrombosis risk assessment in adult patients. Results: the sample included 300 patient charts; 182 (60.7 %) were surgical patients and 118 were medical patients. Forty six patients (15.3 %) received deep vein thrombosis pharmacologic prophylaxis; 27.1 % of medical patients received deep vein thrombosis prophylaxis versus 8.3 % of surgical patients (p < 0.0001). Conclusions: our results show that adherence to DVT prophylaxis at our hospital is extremely low. Only 15.3 % of our patients at risk received treatment, and even patients with very high risk received treatment in less than 25 % of the cases. We have implemented strategies to increase compliance with clinical guidelines.

  18. Collateral veins in left renal vein stenosis demonstrated via CT

    Energy Technology Data Exchange (ETDEWEB)

    Lien, H.H.; Lund, G.; Talle, K.

    1983-02-01

    Twelve patients with left renal vein stenosis from tumor compression were studied with CT. All had distended collateral veins in the perirenal space which either formed a radiating or a cobweb pattern or appeared as marked longitudinal veins. Inferior phrenic vein branches were seen in seven patients and were considerably enlarged in two. Other major veins possibly taking part in collateral circulation could not be recognized due to obliteration of fat planes. The renal fascia was thickened in eleven patients, probably due to edema. A close study of the perirenal space with CT may give valuable information about collateral development.

  19. Collateral veins in left renal vein stenosis demonstrated via CT

    International Nuclear Information System (INIS)

    Lien, H.H.; Lund, G.; Talle, K.

    1983-01-01

    Twelve patients with left renal vein stenosis from tumor compression were studied with CT. All had distended collateral veins in the perirenal space which either formed a radiating or a cobweb pattern or appeared as marked longitudinal veins. Inferior phrenic vein branches were seen in seven patients and were considerably enlarged in two. Other major veins possibly taking part in collateral circulation could not be recognized due to obliteration of fat planes. The renal fascia was thickened in eleven patients, probably due to edema. A close study of the perirenal space with CT may give valuable information about collateral development. (orig.)

  20. Concerns and Discomforts of Pregnancy - Varicose Veins

    Science.gov (United States)

    Concerns and Discomforts of Pregnancy - Varicose Veins Varicose veins are enlarged veins you may see on your ... Healthy Roads Media project www. healthyroadsmedia. org English - Concerns and Discomforts of Pregnancy (Varicose Veins) Last reviewed ...

  1. Bilateral anomalous drainage of the posterior divisions of renal veins into the azygos venous system in a 20-year-old woman: a case report.

    Science.gov (United States)

    Pallangyo, Pedro; Lyimo, Frederick; Nicholaus, Paulina; Masatu, Stephano; Janabi, Mohamed

    2016-12-03

    Renal vein anomalies are relatively infrequent and generally asymptomatic. Preoperative knowledge of such variants is, however, of paramount importance in several angiographic and surgical procedures including renal venography, renal vein sampling, spermatic embolization, and renal transplantation. Inadequate knowledge and failure to recognize such anatomic variations may lead to several operative hazards including hemorrhage, nephrectomy, and even death. We report a case of bilateral anomalous drainage of the posterior divisions of renal veins into the azygos venous system in a 20-year-old woman of African descent from Tanzania who presented to us with a 12-year history of recurrent anemia. She had anemia, a positive sickling test, and hemoglobin electrophoresis revealed a sickle cell trait (AS). She underwent computed tomography angiography of her chest and abdomen to rule out the presence of arteriovenous malformations. Aortography findings were normal but venography results revealed features of tortuously dilated azygos and hemiazygos veins each receiving blood from its respective posterior division of renal vein. Although venous anomalies are relatively infrequent and generally lack a clinical significance, a thorough understanding of embryologic development and its associated errors is of immense importance in equipping angiographers and surgeons to select appropriate interventional/operative techniques, anticipate risks, and prevent intervention-related complications.

  2. Interposition vein cuffs.

    Science.gov (United States)

    Harris, P; Da Silva, T; How, T

    1996-01-01

    A vein cuff interposed at the distal anastomosis between a prosthetic vascular graft and a recipient infrageniculate artery improves the chances of continued patency of the graft, at least in the short and medium term. The mode of effect appears to be suppression or modification of anastomotic myointimal hyperplasia (MIH). In the event of graft failure the recipient artery and run-off vessels remain free from MIH and their patency is preserved thereby improving the prospects for further vascular reconstruction and limb salvage. The mechanisms by which interposition vein cuffs might modulate MIH are reviewed. Experimental evidence is described to show that the geometry of a cuffed anastomosis promotes a characteristic haemodynamic flow structure with a stable vortex. It is suggested that this vortex exerts greater shear stress upon the wall of the artery than the normal laminar flow observed in conventional anastomoses. High shear stress is known to inhibit MIH.

  3. Accessory hepatic vein: MR imaging

    International Nuclear Information System (INIS)

    Lee, Chang Hee; Rho, Tack Soo; Cha, Sang Hoon; Park, Cheol Min; Cha, In Ho

    1995-01-01

    To evaluate the MR appearance of the accessory hepatic veins. The study included 87 consecutive patients for whom abdominal MR images were obtained. The subjects who had liver lesion or hepatic vascular abnormalities were excluded. Couinaud classified accessory hepatic veins into inferior and middle right hepatic veins. Our major interests were evaluation of the incidence, morphology, and location of the accessory hepatic vein. Inferior right hepatic vein was demonstrated in 43 out of 87 patients (49%). The morphology was linear in 35 patients (80.5%), and V-shaped in 8 patients (19.5%). In 40 patients (93%), the inferior right hepatic vein was located in the posteroinferior aspect of the right lobe. Middle right hepatic vein was demonstrated in 7 out of 87 patients (8%). All were single linear in morphology, combined with the inferior right hepatic vein, and located between the right hepatic vein and inferior right hepatic vein. The accessory hepatic vein was demonstrated in 49% among the Korean adult population, and was located in posteroinferior portion of the liver, in 93%

  4. Vein grafting in fingertip replantations.

    Science.gov (United States)

    Yan, Hede; Jackson, William D; Songcharoen, Somjade; Akdemir, Ovunc; Li, Zhijie; Chen, Xinglong; Jiang, Liangfu; Gao, Weiyang

    2009-01-01

    In this retrospective study, the survival rates of fingertip replantation with and without vein grafting were evaluated along with their postoperative functional and cosmetic results. One hundred twenty-one-fingertip amputations were performed in 103 patients between September 2002 and July 2007. Thirty-four amputated fingertips were replanted without vein grafting, while 87 amputated fingertips were replanted with vein grafting for arterial and/or venous repairs. The overall survival rates of the replantations with and without vein grafting were 90% (78/87) and 85% (29/34), respectively. The survival rates were 88% (36/41) with venous repair, 93% (25/27) with arterial repair, and 89% (17/19) with both. Nineteen patients without vein grafting and 48 patients with vein grafting had a follow-up period of more than one year. Good cosmetic and functional outcomes were observed in both groups of patients. The results show that vein grafting is a reliable technique in fingertip replantations, showing no significant difference (P > 0.05) in survival between those with and without vein grafting. Furthermore, no significant difference (P > 0.05) in survival was found between cases with vein grafts for arterial and/or venous repairs. In fingertip replantations with vein grafting, favorable functional and esthetic results can be achieved without sacrificing replantation survival. (c) 2009 Wiley-Liss, Inc.

  5. TrapEase inferior vena cava filter placement: use of the subclavian vein.

    Science.gov (United States)

    Stone, Patrick A; Aburahma, Ali F; Hass, Stephen M; Hofeldt, Matthew J; Zimmerman, William B; Deel, John T; Deluca, John A

    2004-01-01

    The purpose of this paper was to evaluate the safety and technical success of TrapEase inferior vena cava filter placement via the subclavian vein. As of yet, no reports in the literature have specifically investigated the use of the subclavian vein as a route for deploying TrapEase vena cava filters. Retrospective chart review was conducted of 135 patients with attempted TrapEase inferior vena cava filter placement over a 2-year period. In a majority of cases, the choice of subclavian vein approach was based primarily on surgeon preference. Other circumstances for subclavian vein deployment included cervical immobilization secondary to trauma, desire for concomitant placement of a subclavian long-term central venous access catheter, and patient body habitus limiting exposure to the internal jugular vein. One hundred and thirty-five filters were placed over this 2-year period. The internal jugular vein approach was used in 56 patients, the femoral vein approach in 39 patients, and the subclavian vein approach in 40 patients. Thirty-nine of the 40 TrapEase filter placements using the subclavian vein were successful. Twenty-six were deployed through the right subclavian vein and 14 through the left subclavian vein. The single failed subclavian deployment was due to the inability to pass the guidewire adequately into the inferior vena cava after successful cannulation of the right subclavian vein. The average deployment time for subclavian vein placement was 26 minutes when TrapEase filter placement was the only procedure performed. No insertional complications were encountered, specifically no pneumothoraces confirmed by chest radiography or fluoroscopy. The subclavian vein provides an alternative site of access for the TrapEase inferior vena cava filter. This route is comparable to other alternative methods evaluated both in average deployment time and complication occurrence. Furthermore, the subclavian vein route is valuable in patients with limited central access

  6. [A clinical case of young, oral combined contraceptive using women, heterozygous carrier of the Factor V (Leiden) which revealed thrombosis of the left internal jugular vein and brain ischemia with cerebral infarction and ischemic stroke].

    Science.gov (United States)

    Kovachev, S; Ramshev, K; Ramsheva, Z; Ivanov, A; Ganovska, A

    2013-01-01

    Thrombophilia is associated with increased risks of venous thrombosis in women taking oral contraceptive preparations. Universal thrombophilia screening in women prior to prescribing oral contraceptive preparations is not supported by current evidence. The case is presented of a 23 year-old women with a personal history of interruption and on the same day started with oral contraceptive (0.03 microg ethynil estradiol - 0.075 microg gestodene), which due on a 18 pill/day to acute headache, increasing vomiting and speaking defects. Physical/neurologic/gynecologic examinations observed a normal status. The MRI and CT revealed thrombosis of the left internal jugular vein and brain ischemia with cerebral infarction and ischemic stroke. The acute therapy of thrombotic findings was accompanied with many tests. The thrombophilia PCR-Real time - test finds heterozygous carrier of the Factor V (Leiden). This case shows the need of large prospective studies that should be undertaken to refine the risks and establish the associations of thrombophilias with venous thrombosis among contraceptive users. The key to a prompt diagnosis is to know the risk factors. The relative value of a thrombophilia screening programme before contraceptive using needs to be established.

  7. Morphology of congenital portosystemic shunts involving the left colic vein in dogs and cats.

    Science.gov (United States)

    White, R N; Parry, A T

    2016-05-01

    To describe the anatomy of congenital portosystemic shunts involving the left colic vein in dogs and cats. Retrospective review of a consecutive series of dogs and cats managed for congenital portosystemic shunts. For inclusion a shunt involving the left colic vein with recorded intraoperative mesenteric portovenography or computed tomography angiography along with direct gross surgical observations at the time of surgery was required. Six dogs and three cats met the inclusion criteria. All cases had a shunt which involved a distended left colic vein. The final communication with a systemic vein was variable; in seven cases (five dogs, two cats) it was via the caudal vena cava, in one cat it was via the common iliac vein and in the remaining dog it was via the internal iliac vein. In addition, two cats showed caudal vena cava duplication. The morphology of this shunt type appeared to be a result of an abnormal communication between either the left colic vein or the cranial rectal vein and a pelvic systemic vein (caudal vena cava, common iliac vein or internal iliac vein). This information may help with surgical planning in cases undergoing shunt closure surgery. © 2016 British Small Animal Veterinary Association.

  8. Correlations between anomalies of jugular veins and areas of vascular drainage of head and neck.

    Science.gov (United States)

    Vaida, Monica-Adriana; Niculescu, V; Motoc, A; Bolintineanu, S; Sargan, Izabella; Niculescu, M C

    2006-01-01

    The study conducted on 60 human cadavers preserved in formalin, in the Anatomy Laboratory of the "Victor Babes" University of Medicine and Pharmacy Timisoara, during 2000-2006, observed the internal and external jugular veins from the point of view of their origin, course and affluents. The morphological variability of the jugular veins (external jugular that receives as affluents the facial and lingual veins and drains into the internal jugular, draining the latter's territory--3.33%; internal jugular that receives the lingual, upper thyroid and facial veins, independent--13.33%, via the linguofacial trunk--50%, and via thyrolinguofacial trunk--33.33%) made possible the correlation of these anomalies with disorders in the ontogenetic development of the veins of the neck. Knowing the variants of origin, course and drainage area of jugular veins is important not only for the anatomist but also for the surgeon operating at this level.

  9. Emergent Median Sternotomy for Mediastinal Hematoma: A Rare Complication following Internal Jugular Vein Catheterization for Chemoport Insertion—A Case Report and Review of Relevant Literature

    Directory of Open Access Journals (Sweden)

    Saptarshi Biswas

    2014-01-01

    Full Text Available Mediastinal hematoma is a rare complication following insertion of a central venous catheter with only few cases reported in the English literature. We report a case of a 71-year-old female who was admitted for elective chemoport placement. USG guided right internal jugular access was attempted using the Seldinger technique. Resistance was met while threading the guidewire. USG showed a chronic clot burden in the RIJ. A microvascular access was established under fluoroscopic guidance. Rest of the procedure was completed without any further issues. Following extubation, the patient complained of right-sided chest pain radiating to the back. Chest X-ray revealed a contained white out in the right upper lung field. She became hemodynamically unstable. Repeated X-ray showed progression of the hematoma. Median Sternotomy showed posterior mediastinal hematoma tracking into right pleural cavity. Active bleeding from the puncture site at RIJ-SCL junction was repaired. Patient had an uneventful recovery. Injury to the central venous system is the result of either penetrating trauma or iatrogenic causes as in our case. A possible explanation of our complication may be attributed to the forced manipulation of the dilator or guidewire against resistance. Clavicle and sternum offer bony protection to the underlying vital venous structures and injuries often need sternotomy with or without neck extension. Division of the clavicle and disarticulation of the sternoclavicular joint may be required for optimum exposure. Meticulous surgical technique, knowledge of the possible complications, and close monitoring in the postprocedural period are of utmost importance. Chest X-ray showed to be routinely done to detect any complication early.

  10. 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.

  11. Vein type uranium deposits

    International Nuclear Information System (INIS)

    1986-01-01

    Veins are tabular- or sheet-like masses of minerals occupying or following a fracture or a set of fractures in the enclosing rock. They have been formed later than the country rock and fractures, either by filling of the open spaces or by partial or complete replacement of the adjoining rock or most commonly by both of these processes combined. This volume begins with the occurrences and deposits known from old shield areas and the sedimentary belts surrounding them. They are followed by papers describing the European deposits mostly of Variscan age, and by similar deposits known from China being of Jurassic age. The volume is completed by two papers which do not fit exactly in the given scheme. A separate abstract was prepared for each of the 25 papers in this report

  12. The economics of vein disease.

    Science.gov (United States)

    Sales, Clifford M; Podnos, Joan; Levison, Jonathan

    2007-09-01

    The management of cosmetic vein problems requires a very different approach than that for the majority of most other vascular disorders that occur in a vascular surgery practice. This article focuses on the business aspects of a cosmetic vein practice, with particular attention to the uniqueness of these issues. Managing patient expectations is critical to the success of a cosmetic vein practice. Maneuvering within the insurance can be difficult and frustrating for both the patient and the practice. Practices should use cost accounting principles to evaluate the success of their vein work. Vein surgery--especially if performed within the office--can undergo an accurate break-even analysis to determine its profitability.

  13. MULTIPLE VARIATIONS OF THE SUPERFICIAL JUGULAR VEINS: CASE REPORT AND CLINICAL RELEVANCE

    Directory of Open Access Journals (Sweden)

    George Paraskevas

    2014-01-01

    Full Text Available The jugular venous system constitutes the primary venous drainage of the head and neck. It includes a profundus or subfascial venous system, formed by the two internal jugular veins, and a superficial or subcutaneous one, formed by the two anterior and two external jugular veins. We report one case of unilateral anatomical variations of the external and anterior jugular veins. Particularly, on the right side, three external jugular veins co-existed with two anterior jugular veins. Such a combination of venous anomalies is extremely rare. The awareness of the variability of these veins is essential to anesthesiologists and radiologists, since the external jugular vein constitutes a common route for catheterization. Their knowledge is also important to surgeons performing head and neck surgery.

  14. Stenting of vertical vein in an infant with obstructed supracardiac total anomalous pulmonary venous drainage

    Directory of Open Access Journals (Sweden)

    W K Lim

    2016-01-01

    Full Text Available A 1.7 kg infant with obstructed supracardiac total anomalous pulmonary venous drainage (TAPVD presented with severe pulmonary hypertension secondary to vertical vein obstruction. The child, in addition, had a large omphalocele that was being managed conservatively. The combination of low weight, unoperated omphalocele, and severe pulmonary hypertension made corrective cardiac surgery very high-risk. Therefore, transcatheter stenting of the stenotic vertical vein, as a bridge to corrective surgery was carried out. The procedure was carried out through the right internal jugular vein (RIJ. The stenotic segment of the vertical vein was stented using a coronary stent. After procedure, the child was discharged well to the referred hospital for weight gain and spontaneous epithelialization of the omphalocele. Stenting of the vertical vein through the internal jugular vein can be considered in very small neonates as a bridge to repair obstructed supracardiac total anomalous venous drainage.

  15. Varicose Vein Treatment (Endovenous Ablation of Varicose Veins)

    Science.gov (United States)

    ... associated veins. top of page What are the benefits vs. risks? Benefits No surgical incision is needed—only a small ... risk of infection. The chance of infection requiring antibiotic treatment appears to be less than one in ...

  16. 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.

  17. Thrombosis of right ovarian vein

    International Nuclear Information System (INIS)

    Forner, J.; Talens, A.; Flores, M.; Mendez, M.

    2001-01-01

    Ovarian vein thrombosis is a rare postpartum complication (0.1%). It can be fatal, since it can lead to sepsis, pulmonary thromboembolisms and inferior vena cava or renal vein thrombosis. Computed tomography and magnetic resonance imaging are the techniques of choice for its diagnosis, while the value of ultrasound is limited due to its low sensitivity and specificity. We report the case of a woman who, during puerperium, developed thrombosis of right ovarian vein that presented clinical, ultrasonographic and computed tomographic features of appendicitis. We describe the radiological sings and stress the fact that this diagnosis should be suspected in puerperal women. (Author) 9 refs

  18. 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

  19. 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

  20. Efficacy of local dexmedetomidine add-on for spermatic cord block anesthesia in patients undergoing intrascrotal surgeries: randomized controlled multicenter clinical trial

    Directory of Open Access Journals (Sweden)

    Hetta DF

    2017-11-01

    Full Text Available Diab Fuad Hetta,1 Emad E Kamal,2 Ali M Mahran,2 Doaa G Ahmed,1 Abdelraheem Elawamy,3 Abdelraouf MS Abdelraouf3 1Department of Anesthesiology and Pain Management, South Egypt Cancer Institute, 2Department of Dermatology and Andrology, 3Department of Anesthesiology and Intensive Care, Faculty of Medicine, Assiut University, Assiut, Egypt Study objective: The objective of this study was to evaluate the effect of adding dexmedetomidine (DEX to bupivacaine on the quality of spermatic cord block anesthesia and postoperative analgesia. Design: This is a randomized, double-blind study. Setting: This study was performed in an educational and research hospital. Patients: One hundred twenty adult males were scheduled for intrascrotal surgeries. Interventions: Patients were divided into two groups: group B received 10 mL of bupivacaine 0.25% for spermatic cord block and intravenous 50 µg of DEX and group BD received 10 mL of bupivacaine 0.25% added to 50 µg of DEX (9.5 mL bupivacaine 0. 25% + 0.5 mL [50 µg] DEX for spermatic cord block, and for masking purposes, the patients received isotonic saline intravenously. Measurements: Time to first analgesic request, analgesic consumption, and visual analog scale (VAS pain score in the first 24 hours postoperatively were assessed. Main results: Time to first rescue analgesic was significantly delayed in group BD in comparison with group B, median (interquartile range, 7 (6–12 hours versus 6 (5–7 hours, (p=0.000, the mean cumulative morphine consumption (mg in the first postoperative 24 hours was significantly lower in group BD compared with group B, 8.13±4.45 versus 12.7±3.79, with a mean difference (95% CI of −4.57 (−6.06 to −3.07 (p=0.000; also, there was a significant reduction of VAS pain score in group BD in comparison with group B at all measured time points, VAS 2 hours (1.28±0.9 vs 1.92±0.8, VAS 6 hours (2.62±1.5 vs 3.93±1.2, VAS 12 hours (2.40±1.1 vs 3.57±0.65, VAS 24 hours (1.90±0

  1. Beta irradiation inhibits neo-intimal formation in vein grafts

    International Nuclear Information System (INIS)

    Lang Xiaoou; Ji Shenquan; Zeng Ke; Li Jun; Liu Bingbing; Ma Wenfeng; Zhang Qiang

    2002-01-01

    Objective: The study was to evaluate the effect of beta irradiation on intimal proliferation response in vein grafts. Methods: An autogenous vein graft model was established in 40 rats by transplanting internal branch of jugular vein to carotid artery by end-to-end anastomosis. The vein was irradiated by 32 P before anastomosis. Four dose schedules were studied: (1) control graft (nonirradiated); (2) irradiated with 8 Gy; (3) 18 Gy; and (4) 36 Gy. The grafted veins were harvested at 2 weeks after the operation. IH (intimal hyperplasia) and SMC (smooth muscle cell) proliferation were histologically and immuno-histochemically observed and analyzed by a computer digitalising system. Results: In 18 Gy and 36 Gy-irradiated grafts compared with the control, there was a significant decrease in the average intimal thickness (P 0.05). Immunohistochemical analysis of PCNA indicated decrease of positive cells in both 18 Gy and 36 Gy groups compared with 8 Gy and the control group (P 0.05) groups, and there was also no significant difference between 8 Gy and the control group (P > 0.05). Conclusion: These preliminary results demonstrate that proper dose of beta irradiation in vein graft inhibits smooth muscle cells proliferation and neo-intimal hyperplasia in rat

  2. SAZONALIDADE DA PRODUÇÃO ESPERMÁTICA DE REPRODUTORES CAPRINOS EFFECT OF SEASONAL CHANGE ON GOAT SPERMATIC PRODUCTION

    Directory of Open Access Journals (Sweden)

    Benedito Dias de Oliveira Filho

    2007-09-01

    nas condições de nutrição adequadas, a sazonalidade não interfere na fertilidade dos caprinos.

    PALAVRAS-CHAVE: Caprino; produção espermática; reprodução.

    The trial was conduced at the Goiás Federal University (Goiás, Brazil from January to December 1989. Four 12 to 18 month-old animals of gray race were kept in fenced area with Brachiaria decumbens pasture. Nutrition was supplemented by protein and energetic concentrate in order to supply nutrition requirement according to NRC. Seasons were determined by variations on minimal temperature, pluvial precipitation and relative humidity. The four seasons were: A (January, February and March, B (April, May and June, C (July, August and September and D (October, November and December. Semen was collected by eletroejaculation and evaluated for volume, motility, concentration and morphology. Volume values for the four seasons were 0.91, 1.04, 1.07 and 0.96 ml respectively, with no significant difference between seasons (P=0.05. Spermatic concentration showed for seasons A, B, C and D the following values, respectively: 1,201.5, 1,018.2, 1,161.2 and 1,015.5 million/ml, with no significant difference. Motility was 80.25, 63.5, 76.6 and 73.75% for seasons A, B, C and D, being the average percentage 0.5, 0.5, 0.12 and 1.23, respectively. Results showed that the season with higher relative humidity was more harmful to ovine spermatogenesis and under suitable nutrition, seasonal change does not interfere on ovine fertility.

    KEY-WORDS: Goat; spermatic production; reproduction.

  3. Septic Thrombophlebitis of the Cephalic Vein Caused by a Peripherally Inserted Venous Catheter

    Directory of Open Access Journals (Sweden)

    M Mirmohammadsadeghi

    2005-07-01

    Full Text Available Septic thrombophlebitis of a vein is a rare but life-threatening complication of an intravascular (IV catheter placed percutaneously in the veins. Most published clinical experiences with IV catheters, mainly in the outpatient settings, have reported very low rates of catheter-related bloodstream infection compared to rates with central venous catheters placed in a subclavian or internal jugular vein. Most of the complications reported with IV catheters have been non-infectious, particularly sterile phlebitis or thrombosis. We report a case of cephalic vein suppurative thrombophlebitis from an intravascular catheter and offer guidelines for diagnosis and management of this complication. Key words: Septic thrombophlebitis, Intravascular catheter, Suppurative thrombophlebitis

  4. Venographic features of varicocele

    International Nuclear Information System (INIS)

    Yang, Seoung Oh; Kim, Myung Joon; Ro, In Woo

    1987-01-01

    The results of a prospective study of 30 patients with scrotal varicocele on the left side during the past 12 months are presented. By means of preoperative venography of the renal, internal spermatic and common iliac veins, the etiologic identification is possible. Varicocele could be distinguished in which the cause arises in the internal spermatic vein and/or proximal nutcracker phenomenon (by compression of ISV between the aorta and superior mesenteric artery) and/or distal nutcracker phenomenon (by obstruction of common iliac vein). Use of preoperative venography is essential to establish the etiology and anatomy of the lesion and its proper selection of treatment methods including subsequent coil embolization

  5. Venographic features of varicocele

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Seoung Oh; Kim, Myung Joon; Ro, In Woo [Capital Armed Forces General Hospital, Seongnam (Korea, Republic of)

    1987-08-15

    The results of a prospective study of 30 patients with scrotal varicocele on the left side during the past 12 months are presented. By means of preoperative venography of the renal, internal spermatic and common iliac veins, the etiologic identification is possible. Varicocele could be distinguished in which the cause arises in the internal spermatic vein and/or proximal nutcracker phenomenon (by compression of ISV between the aorta and superior mesenteric artery) and/or distal nutcracker phenomenon (by obstruction of common iliac vein). Use of preoperative venography is essential to establish the etiology and anatomy of the lesion and its proper selection of treatment methods including subsequent coil embolization.

  6. Anatomical features of venous outflow from rat’s reproductive organs

    Directory of Open Access Journals (Sweden)

    N. A. Nikitin

    2012-01-01

    Full Text Available The venous drainage from reproductive organs of rats is described; new data on peculiarities of the venous drainage are obtained.Objects of study were adult Wistar white rats (20 animals. The animals have passed precision dissection of vessels in order to study anatomic peculiarities of venous drainage from the left spermary in male rats and internal genital organs in female rats in norm. It has been shown that the venous drainage from the left spermary follows the spermatic vein entering into the pampiniform plexus system, which continues into the single venous trunk, which, in its turn, divides into the ascending and descending veins. The descending vein runs into the common left iliac vein, while the ascending vein runs into the renal vein. The venous drainage from female reproductive organs follows through the uterine vein, which, taking the tubal and spermatic veins, runs from the left into the left renal vein and from the right into the caudal vena cava.

  7. Adrenal vein catheterization. Anatomic considerations

    Energy Technology Data Exchange (ETDEWEB)

    El-Sherief, M.A. (Akademiska Sjukhuset, Uppsala (Sweden))

    1982-01-01

    Twenty post-mortem specimens and 93 phlebographies (56 right side, 37 left side) from 44 patients were investigated with respect to the adrenal venous anatomy. At autopsy, the venous orifices displayed in the area of adrenal drainage were injected bilaterally to identify the adrenal vein(s), the surrounding channels and the presence of interconnections. The findings were correlated with those at clinical phlebography, and the different sources of error were elicited. These were mainly found on the right side. Some guidelines are suggested in the hope that these will contribute to eliminate misconceptions.

  8. Jugular veins in transient global amnesia: innocent bystanders.

    Science.gov (United States)

    Baracchini, Claudio; Tonello, Simone; Farina, Filippo; Viaro, Federica; Atzori, Matteo; Ballotta, Enzo; Manara, Renzo

    2012-09-01

    Transient global amnesia (TGA) has been associated with an increased prevalence of internal jugular valve insufficiency and many patients report Valsalva-associated maneuvers before TGA onset. These findings have led to the assumption of hemodynamic alterations in intracranial veins inducing focal hippocampal ischemia. We investigated this hypothesis in patients with TGA and control subjects. Seventy-five patients with TGA and 75 age- and sex-matched healthy subjects were enrolled into a cross-sectional study. Extracranial and transcranial high-resolution venous echo-color-Doppler sonography was performed blindly in all patients and control subjects. Blood flow direction and velocities were recorded at the internal jugular veins, basal veins of Rosenthal, and vein of Galen, both at rest and during Valsalva-associated maneuvers. Mean age of patients with TGA was 60.3±8.0 years (median, 60 years; range, 44-78 years); 44 (59%) were female (female/male ratio: 1.42). Internal jugular valve insufficiency (left, right, or bilateral) was found to be more frequent in patients with TGA than in control subjects: 53 (70.7%) versus 22 (29.3%; P<0.05). Blood flow velocities in the deep cerebral veins of patients with TGA did not differ from control subjects both at rest and during Valsalva-associated maneuvers. Intracranial venous reflux was neither observed in patients with TGA nor in control subjects despite unilateral or bilateral internal jugular valve insufficiency during prolonged and maximal Valsalva-associated maneuvers. This study, although confirming the association between TGA and internal jugular valve insufficiency, challenges the hypothesis that cerebral venous congestion plays a significant role in the pathogenesis of TGA.

  9. CT findings of portal vein aneurysm

    International Nuclear Information System (INIS)

    Yang, Dal Mo; Chang, Mi Son; Yoon, Myung Hwan; Kim, Hak Soo; Kim, Hyung Sik; Chung, Hyo Sun; Chung, Jin Woo

    1999-01-01

    To describe the CT findings of portal vein aneurysm in eight patients. All patients included in this study (two men and six women) underwent CT examinations between October 1996 and June1998. Of these eight, three were suffering from hepatic disease and portal hypertension. We determined the location, shape, size, and characteristics of the lesions, and the presence or absence of portal vein anomaly. Seven patients had intrahepatic portal vein aneurysm (at the umbilical portion of the left portal vein in five patients, between the transverse and umbilical portion of the left portal vein in one, and at the bifurcation of the anterior and posterior branch of the right portal vein in one), while extrahepatic portal vein aneurysm, at the confluence of the superior mesenteric and splenic vein was found in only one. Lesions were cyst-shaped in seven cases and saccular in one, and showed well-circumscribed, markedly enhanced mass, which communicated with the portal vein and/or gives off major branches. Portal vein anomaly, in which the right anterior segmental portal vein originated from the umbilical portion of the left portal vein, was seen in three patients. In all three, intrahepatic portal vein aneurysm was present at the umbilical portion of the left portal vein, and in one, the umbilical protion of the left portal vein was located to the right of the Cantlic line. CT examination can help reveal portal vein aneurysm by detecting a well-circumscribed, markedly enhanced mass which communicates with the portal vein and/or gives off major branches

  10. Galen's vein aneurysm as cause of heart failure

    International Nuclear Information System (INIS)

    Echeverria, Claudia; Cassalett, Gabriel; Franco, Jaime; Carrillo, Gustavo

    2005-01-01

    We present the case of a newborn admitted to the intensive care unit with a heart failure of difficult medical management. A large ductus arteriosus was found. It was surgically corrected, but the heart failure persisted and did not improve with medical treatment. Incidentally, a big Galen's vein aneurysm was found. Galen's vein aneurysm is a rare congenital pathology, originated by a fusion defect of the internal cerebral veins. Due to its low resistance, it produces a picture of high-output heart failure. Large defects may contain 50% to 60% of cardiac output. An aneurysm may be suspected in each newborn or infant with clinical picture of heart failure and right cardiac chamber dilation without any evidence of structural cardiac anomaly

  11. Congestive index of portal vein

    International Nuclear Information System (INIS)

    Kim, Won Ho; Kim, H. K.; Lee, S. C.; Han, S. H.; Han, K. H.; Chung, J. B.; Choi, H. J.

    1989-01-01

    In patients with portal hypertension, the blood flow volume is maintained despite decreased blood flow velocity due to enlargement of the vascular cross sectional area. Thus, the 'congestion index' of the portal vein, which is the ratio between the cross sectional area (cm2) and the blood flow velocity (cm/sec) determined by a Doppler ultrasonography, may be a sensitive index by which to assess portal hypertension. We performed Doppler ultrasonography on 24 normal subjects, 14 patients with biopsy proved chronic active hepatitis and 55 patients with liver cirrhosis in order to assess the diagnostic value of the congestion index. The cross sectional area of the portal vein was significantly enlarged and the mean blood flow velocity was significantly reduced in patients with liver cirrhosis compared with controls. However, the blood flow volume was no difference. The congestion index of the portal vein was significantly increased in patients with liver cirrhosis (0.113+0.035) compared with patients with chronic active hepatitis(0.078+0.029) (p<0.001) and controls (0.053+0.016) (p<0.001). The sensitivity, specificity and predictability of the congestion index for detection of patients with the cirrhosis of the liver were 76.4%, 100% and 100% respectively, when the normal range was set at mean+2SD. The results suggest that the congestion index of the portal vein may pla a significant role in diagnosis of portal hypertensive patients

  12. Kinetics of vein graft hyperplasia

    International Nuclear Information System (INIS)

    Zwolak, R.M.; Adams, M.C.; Clowes, A.W.

    1986-01-01

    Human aortocoronary vein grafts fail due to accelerated occlusive disease. The possibility that this is related to cellular hyperplasia was investigated in a rabbit model where kinetics of vein graft thickening, endothelial (EC) repair, and smooth muscle cell (SMC) proliferation were measured from 2 days to 24 weeks after implanting jugular vein segments in the carotid artery. Immediately after graft placement focal EC denudation was observed. These defects were repaired within 1 week and did not recur. By 4 weeks intimal area had increased 30 fold from 0.028 +/- 0.004 to 0.705 +/- 0.021 mm 2 , and a 24 weeks was 0.93 +/- 0.21 mm 2 . This response did not produce a reduction in graft lumen area. EC and SMC thymidine-labeling index were measured by en face and cross-section autoradiography after injection of 3 H-thymidine and perfusion fixation. Despite rapid EC surface repair EC labeling index remained elevated and only returned to normal levels at 12 weeks; SMC labeling was 10 fold greater than baseline even at 24 weeks (0.22% vs 0.02%). SMC mass demonstrated morphometrically increased between 2 and 12 weeks. Intimal thickening in vein grafts is due to SMC proliferation and develops after the EC layer has been restored. In contrast, intimal SMC proliferate in damaged arteries when the EC layer is absent and cease when the EC layer is regenerated

  13. [Transposition of the cephalic vein in free flap breast reconstruction: Technical note].

    Science.gov (United States)

    Silhol, T; Suffee, T; Hivelin, M; Lantieri, L

    2018-02-01

    Free flaps have become a reliable practice for breast reconstruction. However, the venous congestion is still the most frequent reason of flap failure. It is due to bad quality of the internal mammary veins, a preferential superficial venous outflow of the flap or due to venous thrombosis. The transposition of the cephalic vein could useful in some cases. We describe the surgical technique and suggest an intraoperative algorithm. Seventeen patients (15 DIEP and 2 PAP) were included. Twenty nine point four percent had an unusable internal mammary vein, 23.5% a preferential superficial venous outflow and 47.1% a venous thrombosis. The length of the cephalic vein dissected varied from 15 to 25cm. The mean time of dissection was 39min. There was no flap failure after cephalic vein transposition. The sequelae were one or two scars on the arm without any functional morbidity. The transposition of the cephalic vein is a reliable, less morbid alternative in case of bad quality internal mammary vein with a good quality internal mammary artery, in case of an additional venous outflow necessity or in case of venous thrombosis. Copyright © 2017 Elsevier Masson SAS. All rights reserved.

  14. Surgical Access to Jejunal Veins for Local Thrombolysis and Stent Placement in Portal Vein Thrombosis

    International Nuclear Information System (INIS)

    Schellhammer, Frank; Esch, Jan Schulte am; Hammerschlag, Sascha; Knoefel, Wolfram Trudo; Fuerst, Guenter

    2008-01-01

    Portal vein thrombosis is an infrequent entity, which may cause high morbidity and mortality. We report a case of portal vein thrombosis due to benign stenosis following partial pancreatoduodenectomy with segmental replacement of the portal vein by a Gore-tex graft. Using a surgical access to jenunal veins, local thrombolysis, mechanical fragmentation of thrombus, and stent placement were successfully performed.

  15. Preoperative mapping of the saphenous vein

    DEFF Research Database (Denmark)

    Levi-Mazloum, Niels Donald; Sillesen, H; Nielsen, Tina G

    1995-01-01

    A consecutive series of 92 patients had their greater saphenous vein assessed with duplex ultrasound scanning prior to planned infrainguinal bypass procedures. A naturally occurring optimal vein diameter was discovered. It was significantly correlated with higher postoperative ankle-brachial pres......-brachial pressure index (ABI) and lesser early postoperative thrombosis. A significant linear regression was found between the pre and postoperative vein diameter....

  16. Collateral veins in inferior caval vein occlusion demonstrated via CT

    International Nuclear Information System (INIS)

    Lien, H.H.; Lund, G.

    1983-01-01

    CT-scans of 12 patients with tumour-induced occlusion of the inferior vena cava were studied with regard to collateral veins. A comparison was performed with findings at phlebography in 10 patients and at autopsy in 2. The site and appearance of the main collateral pathway are presented. A close study of vascular structures renders useful information on collateral circulation in occlusion of the inferior vena cava. (orig.)

  17. Recurrence of superficial vein thrombosis in patients with varicose veins.

    Science.gov (United States)

    Karathanos, Christos; Spanos, Konstantinos; Saleptsis, Vassileios; Tsezou, Aspasia; Kyriakou, Despina; Giannoukas, Athanasios D

    2016-08-01

    To investigate which factors other than history of superficial vein thrombosis (SVT) are associated with recurrent spontaneous SVT episodes in patients with varicose veins (VVs). Patients with a history of spontaneous SVT and VVs were followed up for a mean period of 55 months. Demographics, comorbidities, and thrombophilia screening test were analyzed. Patients were grouped according to the clinical-etiology-anatomy-pathophysiology classification. A multiple logistic regression analysis with the forward likelihood ratio method was undertaken. Thirteen patients out of 97 had a recurrence SVT episode during the follow-up period. All those patients were identified to have a thrombophilia defect. Protein C and S, antithrombin, and plasminogen deficiencies were more frequently present in patients without recurrence. Gene mutations were present in 38% in the nonrecurrence group and 77% in the recurrence group. After logistic regression analysis, patients with dislipidemia and mutation in prothrombin G20210A (FII) had an increased risk for recurrence by 5.4-fold and 4.6-fold, respectively. No deep vein thrombosis or pulmonary embolism occurred. Dislipidemia and gene mutations of F II are associated with SVT recurrence in patients with VVs. A selection of patients may benefit from anticoagulation in the short term and from VVs intervention in the long term. © The Author(s) 2015.

  18. Improving the Outcome of Vein Grafts: Should Vascular Surgeons Turn Veins into Arteries?

    OpenAIRE

    Isaji, Toshihiko; Hashimoto, Takuya; Yamamoto, Kota; Santana, Jeans M.; Yatsula, Bogdan; Hu, Haidi; Bai, Hualong; Jianming, Guo; Kudze, Tambudzai; Nishibe, Toshiya; Dardik, Alan

    2017-01-01

    Autogenous vein grafts remain the gold standard conduit for arterial bypass, particularly for the treatment of critical limb ischemia. Vein graft adaptation to the arterial environment, i.e., adequate dilation and wall thickening, contributes to the superior performance of vein grafts. However, abnormal venous wall remodeling with excessive neointimal hyperplasia commonly causes vein graft failure. Since the PREVENT trials failed to improve vein graft outcomes, new strategies focus on the ada...

  19. Blood sampling from adrenal gland vein

    International Nuclear Information System (INIS)

    Sun Yong; Ni Caifang

    2009-01-01

    Adrenal gland vein sampling is an interventional method to get the blood samples from the adrenal gland vein. The blood is obtained via a catheter which is selectively inserted in the adrenal gland vein. This technique is mainly used to be diagnostic for primary hyperaldosteronism. A full knowledge of the anatomy and variations of the adrenal gland vein, serious preoperative preparation and skilled catheterization manipulation are necessary for obtaining sufficient blood sample and for reducing the occurrence of complications. Providing the physicians with definite diagnostic evidence and being technically feasible, adrenal gland vein sampling should become one of the routine examinations for clarifying the cause of primary hyperaldosteronism. (authors)

  20. Unusual termination of the right testicular vein | Woldeyes | Anatomy ...

    African Journals Online (AJOL)

    The testicular veins are formed by the veins emerging from the testis and epididymis forming the pampiniform venous plexus. The right testicular vein drains into inferior vena cava and the left testicular vein to the left renal vein. Testicular veins display a great variability with regard to their number, course and sites of ...

  1. The angiographic demonstration of hepatic vein obstruction

    International Nuclear Information System (INIS)

    Zu Maoheng; Xu Hao; Li Guojun; Gu Yuming; Wei Ning; Wang Cheng; Xu Wei

    2004-01-01

    Objective: To evaluate the angiographic feature of hepatic vein obstruction. Methods Forty-five patients (male 23, female 22, age 9-54 years) suffered from hepatic vein obstruction. The inferior vena cavography and the hepatic venography were performed in all cases. Results: IVC was free in 37 patients with hepatic vein obstruction, both IVC and HV were obstructed in 8 patients. The local or long stenosis of IVC was found in 31 inferior vena cavography. The diameter of IVC was normal in 12 patients. The sign of membranous dome was found in hepatic vein orifice in 5 cases and in accessory hepatic vein orifice in 4 cases. Intrahepatic venous collaterals were found in 45 cases. Conclusion: Hepatic vein obstruction can be reproached primarily in inferior vena cavography, the membranous dome is a direct sign of membranous obstruction of HV and AHV in inferior vena cavography. The selected hepatic venography can provide reliable evidence to diagnose hepatic vein obstruction

  2. Vein-type uranium deposits

    International Nuclear Information System (INIS)

    Rich, R.A.; Holland, H.D.; Petersen, U.

    1975-01-01

    A critical review is presented of published data bearing on the mineralogy, paragenesis, geochemistry, and origin of veiw-type uranium deposits. Its aim is to serve as a starting point for new research and as a basis for the development of new exploration strategies. During the formation of both vein and sandstone types of deposits uranium seems to have been dissolved by and transported in rather oxidized solutions, and deposited where these solutions encountered reducing agents such as carbon, sulfides, ferrous minerals and hydrocarbons. Granitic rocks abnormally enriched in uranium have apparently been the most common source for uranium in vein-type deposits. Oxidizing solutions have been derived either from the surface or from depth. Surface solutions saturated with atmospheric oxygen have frequently passed through red bed or clean sandstone conduits on their way to and from uranium source rocks. Deep solutions of non-surface origin have apparently become sufficiently oxidizing by passage through and equilibration with red beds. The common association of clean sandstones or red beds with uranium-rich granites in the vicinity of vein-type uranium deposits is probably not fortuitous, and areas where these rock types are found together are considered particularly favorable targets for uranium exploration

  3. 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.

  4. 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.

  5. A Morphological Insight of the Femoral Vein

    Directory of Open Access Journals (Sweden)

    Ferreira AH

    2015-10-01

    Full Text Available A total of 13 cadavers (12 men and 1 women of different age group were used for the study with the purpose to determine the prevalence of femoral vein duplication. Lower limb regions (26 sides were carefully dissected as per the standard dissection procedure. Femoral vein (unitruncular was found in 96.15% of specimen. Bitruncular configurations (total bifidity was found in a male cadaver of 75 years of age (3.85%. In the right lower limb, 6.5 cms below the inguinal ligament the femoral vein - lateral ramus received the lateral circumflex femoral vein, and the medial circumflex femoral vein, and the lateral and medial ramii formed a common venous trunk. Knowledge of the truncular venous variations is important to recognize and avoid potential errors in diagnosis of deep venous thrombosis of the femoral vein, in the case of an occluded duplicated trunk.

  6. Normal hepatic vein patterns on ultrasound

    International Nuclear Information System (INIS)

    Kim, Hae Jin; Chae, Yoo Soon; Park, Hea Yeoung; Park, Bok Hwan; Kim, Yang Sook

    1987-01-01

    Understanding of the anatomy of the hepatic vein is important in manipulation for transplantation of the liver, hepatectomy and the treatment of hepatic trauma with avulsion of the hepatic vein. Demonstrated of the inferior right hepatic vein (IRHV) is also important; in some cases of hepatocellular carcinoma, thrombus can be seen in the IRHV; in primary Budd-Chiari syndrome, the IRHV is main draining vein; during hepatectomy, the postero-inferior segment of the right lobe and draining IRHV can be preserved. For some 10 months ultrasound examination was done in a total of 124 patients with normal liver function with special emphasis on the hepatic vein, their branches, and the IRHV, and analysed in terms of branching pattern and relative size of the hepatic vein and the detection rate of the IRHV.

  7. Mineral vein dynamics modelling (FRACS II)

    International Nuclear Information System (INIS)

    Urai, J.; Virgo, S.; Arndt, M.

    2016-08-01

    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.

  8. 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.

  9. Generating and analyzing synthetic finger vein images

    OpenAIRE

    Hillerström, Fieke; Kumar, Ajay; Veldhuis, Raymond N.J.

    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 posed challenges in exploring this technology for large scale applications. This paper details the first such attempt to synthesize finger-vein images and presents analysis of synthesized images fo...

  10. 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.

  11. Geometric Analysis of Vein Fracture Networks From the Awibengkok Core, Indonesia

    Science.gov (United States)

    Khatwa, A.; Bruhn, R. L.; Brown, S. R.

    2003-12-01

    veins are affected by the precipitation, dissolution, and re-precipitation of minerals, and also by mechanical fracturing. In all of our cases we interpret a first-phase mineral dissolution stage where permeability gradually declines as the vein is blocked by inward growing minerals. Hereafter, permeability may briefly increase with the onset of internal fracturing within the vein or by a phase of mineral dissolution opening up new pathways for fluid flow. Eventually we infer that permeability will decline again as second stage minerals are deposited in the fluid flow pathways.

  12. Dynamic control on serpentine crystallization in veins: Constraints on hydration processes in oceanic peridotites

    OpenAIRE

    Andréani , Muriel; Mével , C.; Boullier , A.-M.; Escartín , J.

    2007-01-01

    International audience; Deformation and hydration processes are intimately linked in the oceanic lithosphere, but the feedbacks between them are still poorly understood, especially in ultramafic rocks where serpentinization results in a decrease of rock density that implies a volume increase and/or mass transfer. Serpentinization is accompanied by abundant veining marked by different generations of vein-filling serpentines with a high variety of morphologies and textures that correspond to di...

  13. Selective testicular venography for the localization of undescended testicles

    International Nuclear Information System (INIS)

    Vlahos, L.; Haliasos, N.; Pantazopoulos, C.; Pontifex, G.; King Paul's Hospital, Athens

    1980-01-01

    Percutaneous venography of the internal spermatic vein was performed for the localization of unpalpable testicles in 5 patients varying from 4 to 45 years of age. The catheterization of the vein on the left side was successful in all 5 cases; and the testicle was localized and verified by surgery in all but one case in which a competent valve prevented the retrograde filling of the whole length of the vein down to the testicle. In the two patients with bilateral undescended testicles the right internal vein could not be identified in one patient, and in the other patient a semiselective injection was done into that vein which appeared to represent the spermatic vein, but the examination was not conclusive. (orig.) [de

  14. Selective testicular venography for the localization of undescended testicles

    Energy Technology Data Exchange (ETDEWEB)

    Vlahos, L.; Haliasos, N.; Pantazopoulos, C.; Pontifex, G.

    1980-04-01

    Percutaneous venography of the internal spermatic vein was performed for the localization of unpalpable testicles in 5 patients varying from 4 to 45 years of age. The catheterization of the vein on the left side was successful in all 5 cases; and the testicle was localized and verified by surgery in all but one case in which a competent valve prevented the retrograde filling of the whole length of the vein down to the testicle. In the two patients with bilateral undescended testicles the right internal vein could not be identified in one patient, and in the other patient a semiselective injection was done into that vein which appeared to represent the spermatic vein, but the examination was not conclusive.

  15. Normal distal pulmonary vein anatomy

    Directory of Open Access Journals (Sweden)

    Wiesława Klimek-Piotrowska

    2016-01-01

    Full Text Available Background. It is well known that the pulmonary veins (PVs, especially their myocardial sleeves play a critical role in the initiation and maintenance of atrial fibrillation. Understanding the PV anatomy is crucial for the safety and efficacy of all procedures performed on PVs. The aim of this study was to present normal distal PV anatomy and to create a juxtaposition of all PV ostium variants.Methods. A total of 130 randomly selected autopsied adult human hearts (Caucasian were examined. The number of PVs ostia was evaluated and their diameter was measured. The ostium-to-last-tributary distance and macroscopic presence of myocardial sleeves were also evaluated.Results. Five hundred forty-one PV ostia were identified. Four classical PV ostia patterns (two left and two right PVs were observed in 70.8% of all cases. The most common variant was the classical pattern with additional middle right PV (19.2%, followed by the common ostium for the left superior and the inferior PVs (4.44%. Mean diameters of PV ostia (for the classical pattern were: left superior = 13.8 ± 2.9 mm; left inferior = 13.3 ± 3.4 mm; right superior = 14.3 ± 2.9 mm; right inferior = 13.7 ± 3.3 mm. When present, the additional middle right PV ostium had the smallest PV ostium diameter in the heart (8.2 ± 4.1 mm. The mean ostium-to-last-tributary (closest to the atrium distances were: left superior = 15.1 ± 4.6 mm; left inferior = 13.5 ± 4.0 mm; right superior = 11.8 ± 4.0 mm; right inferior = 11.0 ± 3.7 mm. There were no statistically significant differences between sexes in ostia diameters and ostium-to-last-tributary distances.Conclusion. Only 71% of the cases have four standard pulmonary veins. The middle right pulmonary vein is present in almost 20% of patients. Presented data can provide useful information for the clinicians during interventional procedures or radiologic examinations of PVs.

  16. A Rare Complication of the Thyroid Malignancies: Jugular Vein Invasion

    International Nuclear Information System (INIS)

    Dikici, Atilla Süleyman; Yıldırım, Onur; Er, Mehmet Emin; Kılıç, Fahrettin; Tutar, Onur; Kantarcı, Fatih; Mihmanlı, Ismail

    2015-01-01

    Unilateral invasion of the internal jugular vein (IJV) after subtotal thyroidectomy caused by local recurrence of papillary thyroid carcinoma is extremely rare. We report a case of papillary thyroid carcinoma which invades IJV with hypervascular tumor thrombus. We report a case of a 52-year-old woman with a history of previous thyroid operation who presented with a 2-month history of a painless, growing, hard, solitary mass on the left side of the neck. Clinical examination revealed also ipsilateral cervical lymphadenopathy. Radiological examination showed a necrotic and cystic mass arising from the operated area extending and invading the left jugular vein wall with hypervascular tumor thrombus. Cytological examination of the mass confirmed a papillary thyroid carcinoma (PTC) and enlarged metastatic lymph nodes. Therefore, total thyroidectomy with left neck dissection and segmental resection of the left internal jugular vein were performed, and the tumor thrombus was cleared successfully. Invasion of IJV with hypervascular tumor thrombosis is an extremely rare condition in papillary thyroid carcinoma. Thrombosis of IJV is probably underdiagnosed. Early-stage diagnosis is important for long-term survival rates

  17. A case of double inferior vena cava with renal, ovarian and iliac vein variation.

    Science.gov (United States)

    Ito, Taro; Ikeda, Yayoi

    2018-01-01

    We encountered a rare case of an anatomic variant of inferior vena cava (IVC) duplication with renal, ovarian and iliac vein variation in an 81-year-old Japanese female cadaver during a student dissection course of anatomy at Aichi Gakuin University School of Dentistry. The two IVCs ran upwards bilaterally to the abdominal aorta. The left IVC joined with the left renal vein (RV) to form a common trunk that crossed anterior to the aorta and ended at the right IVC. We detected a vein [interiliac vein (IiV)] connecting the two IVCs at the level of the aortic bifurcation. The IiV was formed by the union of two tributaries from the left IVC and a tributary from the left internal iliac vein (IIV) and ran obliquely upwards from left to right. Two right ovarian veins, arising separately from the ipsilateral pampiniform plexus, ran vertically in parallel to each other, and each one independently terminated at the right IVC and the right RV. Two right IIVs, connecting each other with small branches, ascended and separately joined the right external iliac vein. The right and left IIVs were connected to each other. These variations cause abnormal drainage, which could lead to clinical symptoms associated with the dysfunction of the vascular and urogenital systems. Here we describe the detailed anatomical features of the area and discuss the related anatomical and developmental aspects.

  18. Sliding Window-Based Region of Interest Extraction for Finger Vein Images

    Science.gov (United States)

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

    2013-01-01

    Region of Interest (ROI) extraction is a crucial step in an automatic finger vein recognition system. The aim of ROI extraction is to decide which part of the image is suitable for finger vein feature extraction. This paper proposes a finger vein ROI extraction method which is robust to finger displacement and rotation. First, we determine the middle line of the finger, which will be used to correct the image skew. Then, a sliding window is used to detect the phalangeal joints and further to ascertain the height of ROI. Last, for the corrective image with certain height, we will obtain the ROI by using the internal tangents of finger edges as the left and right boundary. The experimental results show that the proposed method can extract ROI more accurately and effectively compared with other methods, and thus improve the performance of finger vein identification system. Besides, to acquire the high quality finger vein image during the capture process, we propose eight criteria for finger vein capture from different aspects and these criteria should be helpful to some extent for finger vein capture. PMID:23507824

  19. Interventional treatment of iliac vein compression syndrome

    International Nuclear Information System (INIS)

    Li Xiaoqiang; Zhou Weiming; Nie Zhonglin; Yu Chaowen

    2002-01-01

    Objective: To explore the clinical significance of interventional treatment of iliac vein compression syndrome (IVCS). Methods: Percutaneous transluminal angioplasty (PTA) was performed in 40 cases. Thirty-three cases underwent endovascular stent implantation and 27 cases underwent second-stage left saphenous vein ligation and stripping and the valves of left femoral veins narrowing. Thirty-one cases were followed-up postoperatively and the duration was 6-66 months (mean 28 months). Results: The dilation of iliac veins was successful in 36 cases and there were god efficacy in all patients when they discharged from hospital. Followed-up during post-operation, all the limbs ulcers were cured and varicose veins disappeared. The skin pigmentation disappeared in 17 of 19 cases and markedly relieved in 2 cases. Left lower limb swelling disappeared in 15 of 17 cases and relieved in 2 cases. Conclusion: There is good efficacy in the interventional treatment of left iliac vein lesions, but second-stage procedures should be performed in secondary lesions of saphenous veins and valves of femoral veins

  20. Retinal vein occlusion: pathophysiology and treatment options

    OpenAIRE

    Karia, Niral

    2010-01-01

    Niral KariaDepartment of Ophthalmology, Southend Hospital, Prittlewell Chase, Westcliff on Sea, Essex, United KingdomAbstract: This paper reviews the current thinking about retinal vein occlusion. It gives an overview of its pathophysiology and discusses the evidence behind the various established and emerging treatment paradigms.Keywords: central, hemispheric, branch, retinal vein occlusion, visual loss

  1. Generating and analyzing synthetic finger vein images

    NARCIS (Netherlands)

    Hillerström, Fieke; Kumar, Ajay; Veldhuis, Raymond N.J.

    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

  2. Preoperative mapping of the saphenous vein

    DEFF Research Database (Denmark)

    Levi-Mazloum, Niels Donald; Sillesen, H; Nielsen, Tina G

    1996-01-01

    A series of 124 patients had their greater saphenous vein assessed with duplex ultrasound scanning prior to planned infrainguinal bypass procedures. 33 (27%) bypass procedures thrombosed within the first year. A naturally occurring optimal vein diameter was discovered: 5.0-6.5 mm at mid-thigh lev...

  3. The veining phenomenon in unalloyed plutonium

    International Nuclear Information System (INIS)

    White, J.S.

    1976-01-01

    An investigation has been made of the veining phenomenon in unalloyed plutonium. The surface markings, or veins, which are sometimes seen on α-phase plutonium samples, arise as a result of the β→α transformation. As far as is known, this veining is unrivalled in its scale and form as compared with the solid state surface transformation effects shown by any other metal. The phenomenon has been explained by the application of the Le Chatelier principle to the phase change. In this instance, the large (10%) volume contraction associated with the β→α reaction and the anisotropy of the nonoclinic α-phase structure, account for the fact that the veins are so prominent in plutonium. On the basis of the proposed model, the veins can only form at temperatures where the transformation mechanism is non-martensitic. (Auth.)

  4. Ultrasound assessment of great saphenous vein insufficiency

    Directory of Open Access Journals (Sweden)

    Chander RK

    2015-06-01

    Full Text Available Rajiv K Chander,1 Thomas S Monahan1,2 1Section of Vascular Surgery, Department of Surgery, University of Maryland School of Medicine, 2Department of Surgery, Baltimore Veterans Affairs Medical Center, Baltimore, MD, USA Abstract: Duplex ultrasonography is the ideal modality to assess great saphenous vein insufficiency. Duplex ultrasonography incorporates both gray scale images to delineate anatomy and color-Doppler imaging that visualizes the flow of blood in a structure. Assessment of great saphenous vein requires definition of the anatomy, augmentation of flow, evaluation for both superficial and deep vein thrombosis, and determining the presence of reflux. Currently, evolution in the treatment of reflux also relies on ultrasound for the treatment of the disease. Understanding the utilization of the ultrasound for the diagnosis and treatment of greater saphenous vein reflux is important for practitioners treating reflux disease. Keywords: duplex ultrasonography, small saphenous vein 

  5. Cavernous transformation of the portal vein

    International Nuclear Information System (INIS)

    Lehotska, V.; Dostalova, K.; Durkovsky, A.; Samal, V.

    1995-01-01

    In this contribution, the authors give an account of a rare case of a cavernous transformation of the portal vein that may have originated secondarily in a proliferative hematogenous disease with a polyglobulia and thrombosis in the periferal blood count as well as development of portal hypertension of a prehepatal type. The state of hyper-coagulation in a myeloproliferative disease may have lead to a chronic thrombosis of the portal vein with a subsequent malformation of the portal vein in terms of a cavernous transformation of the portal vein. The case is an interesting one because of the discrepancy between the gravity of the thrombotic complication and slightness of the symptoms in the clinical picture. The authors point out the importance of ultrasonography and computed tomography examination following the intravenous application of a water solution of a contrast medium in a morphologic diagnosing of a rare complication of a chronic thrombotic clot of the portal vein - the cavernous transformation. (authors)

  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. Duplex sonography of the near-surface leg veins

    International Nuclear Information System (INIS)

    Mendoza, E.

    2007-01-01

    The book contains the following contributions: The ultrasonograph, selection of the ultrasonic transducer, anatomy of the near-surface vein system, physiology of the near-surface vein system, varicose status classification, systematics of the duplex sonography of near-surface leg veins, provocational maneuver for the duplex sonographic varicose diagnostics, exploration of vena saphena parva, perforans veins, side branches, phlebitis, sonography for varicose therapy, postsurgical sonography, deep leg veins, examination of near-surface leg veins for the pathology of the deep vein system, differential diagnostic clarification of leg oedema from the phlebologic-lymphological view, diagnostic side features along the near-surface leg veins

  8. Personal authentication through dorsal hand vein patterns

    Science.gov (United States)

    Hsu, Chih-Bin; Hao, Shu-Sheng; Lee, Jen-Chun

    2011-08-01

    Biometric identification is an emerging technology that can solve security problems in our networked society. A reliable and robust personal verification approach using dorsal hand vein patterns is proposed in this paper. The characteristic of the approach needs less computational and memory requirements and has a higher recognition accuracy. In our work, the near-infrared charge-coupled device (CCD) camera is adopted as an input device for capturing dorsal hand vein images, it has the advantages of the low-cost and noncontact imaging. In the proposed approach, two finger-peaks are automatically selected as the datum points to define the region of interest (ROI) in the dorsal hand vein images. The modified two-directional two-dimensional principal component analysis, which performs an alternate two-dimensional PCA (2DPCA) in the column direction of images in the 2DPCA subspace, is proposed to exploit the correlation of vein features inside the ROI between images. The major advantage of the proposed method is that it requires fewer coefficients for efficient dorsal hand vein image representation and recognition. The experimental results on our large dorsal hand vein database show that the presented schema achieves promising performance (false reject rate: 0.97% and false acceptance rate: 0.05%) and is feasible for dorsal hand vein recognition.

  9. On dynamics of uranium vein mineralization

    International Nuclear Information System (INIS)

    Petrosyan, R.V.

    1981-01-01

    The formation of urnaium vein deposits and the essence of consanguinity of the mineralization and wall metasomatites are considered. The formation of uranium mineralization is analysed from the positions of Korzhinsky D. S. : the formation of metasomatite aureole and associated vein ores take place as a result of the development of one solution flow while the formation of mineral vein associations occurs on the background of contineous filtration of the solution during metasomato is due to a repeated (pulse) half-opening of fractures and their filling with a part of filtrating solution. The analysis of the available information on the example of two different uranium manifestations permits to reveal certain relations both in the character of wall rock alterations and between the metasomatosis and the formation of ore minerals in veins. The conclusion is made that spatial-time correlations of vein formations with wall metasomatites attest that the pulse formation of ores in veinlets occurs on the background and in interrelation with a consecutive precipitation of components in the aureole volume. The analysis of element migration dynamics in wall aureole carried out from the positions of the Korzhinsky hypothesis of the advance wave of acid components that takes into account the interaction of continuous and pulse mechanisms of solution movement permits to avoid contradictions when interpreting the processes of wall rock alterations and vein ore-forming, and permits to make a common scheme of vein ore-genesis [ru

  10. Anomalous adrenal vein anatomy complicating the evaluation of primary hyperaldosteronism

    Directory of Open Access Journals (Sweden)

    Kaitlin M. Ford, BS

    2018-02-01

    Full Text Available Adrenal vein development in utero occurs concurrently with the development of the inferior vena cava, the renal veins, and the gonadal veins. The embryologic formation of these veins involves communication of various venous systems. Although the left adrenal-renal vein complex is most commonly described as a shared emptying of the left adrenal vein and the left inferior phrenic vein into the left renal vein, there have been reports of numerous anatomic variations of this complex. In this report, we present a case of a rare variant of the left adrenal vein, in which the left adrenal vein empties into the left gonadal vein, which takes an atypical course superolateral to the left kidney.

  11. Aneurisma de la vena de Galeno Galen's vein aneurysm

    Directory of Open Access Journals (Sweden)

    Sergio Piloña Ruiz

    2010-09-01

    Full Text Available La malformación arteriovenosa de la vena de Galeno es una enfermedad congénita poco frecuente que se produce a partir de un defecto en la fusión de las venas cerebrales internas y que, debido a la baja resistencia, produce un cuadro de falla cardíaca de alto gasto. Las manifestaciones clínicas son muy variables y dependen de la edad de presentación. El pronóstico depende del tamaño del aneurisma. Se presenta el caso de un recién nacido del sexo masculino, con diagnóstico prenatal de aneurisma de la vena de Galeno y, desde el nacimiento, graves signos de insuficiencia cardíaca congestiva de difícil tratamiento. Se realiza una revisión sobre el tema.Arteriovenous malformation of Galen's vein is an uncommon congenital disease present from a defect in internal cerebral veins fusion and that due to the low resistance, produces a high output heart failure. Clinical manifestations are very variables depending on age of presentation. Prognosis depends on the size of aneurysm. This is the case of a male newborn diagnosed prenatally with Galen's vein aneurysm and from his birth severe signs of congestive heart failure of difficult treatment. A literature review on this subject is made.

  12. Enlarged thalamostriate vein causing unilateral Monro foramen obstruction. Case report.

    Science.gov (United States)

    Leonardo, Jody; Grand, Walter

    2009-06-01

    Causes of unilateral hydrocephalus resulting from an obstruction at the Monro foramen include foraminal atresia, tumors, gliosis, contralateral shunting, and infectious and inflammatory conditions. However, few reports in the literature cite vascular lesions as the cause of the obstruction. To their knowledge, the authors present the first report of unilateral hydrocephalus occurring due to an abnormally enlarged thalamostriate vein independent of an arteriovenous malformation or developmental venous angioma. The condition was treated successfully by endoscopic septum pellucidum fenestration. A 28-year-old man was referred for evaluation due to a 10-year history of chronic headaches that worsened in severity over the past year. A CT scan of the head revealed unilateral right ventricular dilation. Cranial MR imaging with and without contrast administration showed a dilated right thalamostriate-internal vein complex without any evidence of associated arteriovenous malformation or venous angioma. Endoscopic exploration of the right lateral ventricle showed an enlarged subependymal thalamostriate vein obstructing the Monro foramen. An endoscopic fenestration of the septum pellucidum was performed, resulting in alleviation of the patient's symptoms. Abnormally enlarged venous structures may cause obstructive unilateral hydrocephalus and can be a rare cause of chronic, intermittent headaches in adults. Endoscopic fenestration of the septum pellucidum is an effective treatment.

  13. Modelo experimental estável de aneurisma sacular em artéria carótida de suínos utilizando veia jugular interna Stable experimental model of carotid artery saccular aneurysm in swine using the internal jugular vein

    Directory of Open Access Journals (Sweden)

    Severino Lourenço da Silva Júnior

    2013-04-01

    Full Text Available OBJETIVO: Desenvolver um modelo experimental estável de aneurisma sacular em carótida de suínos utilizando veia jugular interna. MÉTODOS: Em 12 suínos sadios, com peso variando entre 25 e 50kg, cinco machos e sete fêmeas, foi confeccionado aneurisma na artéria carótida comum direita. Após arteriotomia elíptica, foi realizada anastomose terminolateral com coto distal de veia jugular interna. O volume do aneurisma era calculado de maneira que o valor não excedesse em 27 vezes o valor da área da arteriotomia. Após seis dias, era realizada angiografia e análise microscópica do aneurisma para avaliar perviedade e trombose parcial ou total. RESULTADOS: Houve ganho de peso significante dos suínos no intervalo de tempo entre a confecção do aneurisma e a angiografia (p = 0,04. Foi observada perviedade aneurismática em dez suínos (83%. Ocorreram infecções de feridas operatórias em dois animais (16,6%, ambas com início de aparecimento em três dias após a confecção do aneurisma. Análise histológica dos aneurismas mostrou trombos ocluindo parcialmente a luz em nove suínos (75%. Nesses animais, observou-se que, em média, 9% da luz aneurismática estava preenchida por trombos. CONCLUSÃO: Pôde ser desenvolvido um modelo experimental estável de aneurisma sacular em carótida de suínos utilizando veia jugular interna.OBJECTIVE: To develop an experimental model of stable saccular aneurysm in carotid of pigs using the internal jugular vein. METHODS: In 12 healthy pigs, weighing between 25 and 50kg, five males and seven females, we made a right common carotid artery aneurysm. After elliptical arteriotomy, we carried out a terminolateral anastomosis with the distal stump of the internal jugular vein. Aneurysm volume was calculated so that the value did not exceed 27 times the area of the arteriotomy. After six days angiography and microscopic examination were performed to assess patency of the aneurysm and the presence of total or

  14. Recanalization after acute deep vein thrombosis

    Directory of Open Access Journals (Sweden)

    Gustavo Mucoucah Sampaio Brandao

    2013-12-01

    Full Text Available The process of recanalization of the veins of the lower limbs after an episode of acute deep venous thrombosis is part of the natural evolution of the remodeling of the venous thrombus in patients on anticoagulation with heparin and vitamin K inhibitors. This remodeling involves the complex process of adhesion of thrombus to the wall of the vein, the inflammatory response of the vessel wall leading to organization and subsequent contraction of the thrombus, neovascularization and spontaneous lysis of areas within the thrombus. The occurrence of spontaneous arterial flow in recanalized thrombosed veins has been described as secondary to neovascularization and is characterized by the development of flow patterns characteristic of arteriovenous fistulae that can be identified by color duplex scanning. In this review, we discuss some controversial aspects of the natural history of deep vein thrombosis to provide a better understanding of its course and its impact on venous disease.

  15. Complications of umbilical vein catherisation. Case Report

    International Nuclear Information System (INIS)

    Bothur-Nowacka, J.; Czech-Kowalska, J.; Gruszfeld, D.; Nowakowska-Rysz, M.; Dobrzanska, A.; Kosciesza, A.; Polnik, D.

    2011-01-01

    Umbilical vein catheterization is a relatively easy procedure performed routinely on the neonate intensive care units. It provides a fast central vein access, but some complications have been described in the literature. Case Reports: We presented a case report of a premature infant (34 hbd) with extravasation of the parenteral nutrition and drugs to the liver after umbilical vein catheterization. Fever and increasing biochemical markers of infection were observed. USG revealed a heterogenic, well-limited space of 4 cm in diameter, located in the right lobe of the liver. CT excluded liver abscess. Considering neoplastic process or incorrect location of the catheter of the central vein, we performed liver biopsy. Results: Cytological and biochemical analysis of the aspirated fluid revealed extravasation of parenteral nutrition to the liver.Our case confirms the necessity of controlling a proper location of the central catheter right after its insertion and during hospitalization. (authors)

  16. 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.

  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. Deep vein thrombosis of the leg

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Eun Hee; Rhee, Kwang Woo; Jeon, Suk Chul; Joo, Kyung Bin; Lee, Seung Ro; Seo, Heung Suk; Hahm, Chang Kok [College of Medicine, Hanyang University, Seoul (Korea, Republic of)

    1987-04-15

    Ascending contrast venography is the definitive standard method for the diagnosis of deep vein thrombosis (DVT) of the lower extremities. Authors analysed 22 cases of DVT clinically and radiographically. 1.The patients ranged in age from 15 to 70 yrs and the most prevalent age group was 7th decade (31%). There was an equal distribution of males and females. 2.In 11 cases of 22 cases, variable etiologic factors were recognized, such as abdominal surgery, chronic bedridden state, local trauma on the leg, pregnancy, postpartum, Behcet's syndrome, iliac artery aneurysm, and chronic medication of estrogen. 3.Nineteen cases out of 22 cases showed primary venographic signs of DVT, such as well-defined filling defect in opacified veins and narrowed, irregularly filled venous lumen. In only 3 cases, the diagnosis of DVT was base upon the segmental nonvisualization of deep veins with good opacification of proximal and distal veins and presence of collaterals. 4.Extent of thrombosis: 3 cases were confined to calf vein, 4 cases extended to femoral vein, and 15 cases had involvement above iliac vein. 5.In 17 cases involving relatively long segment of deep veins, propagation pattern of thrombus was evaluated by its radiologic morphology according to the age of thrombus: 9 cases suggested central or antegrade propagation pattern and 8 cases, peripheral or retrograde pattern. 6.None of 22 cases showed clinical evidence of pulmonary embolism. The cause of the rarity of pulmonary embolism in Korean in presumed to be related to the difference in major involving site and propagation pattern of DVT in the leg.

  19. Deep vein thrombosis of the leg

    International Nuclear Information System (INIS)

    Lee, Eun Hee; Rhee, Kwang Woo; Jeon, Suk Chul; Joo, Kyung Bin; Lee, Seung Ro; Seo, Heung Suk; Hahm, Chang Kok

    1987-01-01

    Ascending contrast venography is the definitive standard method for the diagnosis of deep vein thrombosis (DVT) of the lower extremities. Authors analysed 22 cases of DVT clinically and radiographically. 1.The patients ranged in age from 15 to 70 yrs and the most prevalent age group was 7th decade (31%). There was an equal distribution of males and females. 2.In 11 cases of 22 cases, variable etiologic factors were recognized, such as abdominal surgery, chronic bedridden state, local trauma on the leg, pregnancy, postpartum, Behcet's syndrome, iliac artery aneurysm, and chronic medication of estrogen. 3.Nineteen cases out of 22 cases showed primary venographic signs of DVT, such as well-defined filling defect in opacified veins and narrowed, irregularly filled venous lumen. In only 3 cases, the diagnosis of DVT was base upon the segmental nonvisualization of deep veins with good opacification of proximal and distal veins and presence of collaterals. 4.Extent of thrombosis: 3 cases were confined to calf vein, 4 cases extended to femoral vein, and 15 cases had involvement above iliac vein. 5.In 17 cases involving relatively long segment of deep veins, propagation pattern of thrombus was evaluated by its radiologic morphology according to the age of thrombus: 9 cases suggested central or antegrade propagation pattern and 8 cases, peripheral or retrograde pattern. 6.None of 22 cases showed clinical evidence of pulmonary embolism. The cause of the rarity of pulmonary embolism in Korean in presumed to be related to the difference in major involving site and propagation pattern of DVT in the leg

  20. 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.

  1. 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.

  2. Transvenous liver biopsy via the femoral vein

    International Nuclear Information System (INIS)

    Khosa, F.; McNulty, J.G.; Hickey, N.; O'Brien, P.; Tobin, A.; Noonan, N.; Ryan, B.; Keeling, P.W.N.; Kelleher, D.P.; McDonald, G.S.A.

    2003-01-01

    AIM: To study the safety, effectiveness and diagnostic value of transvenous forceps biopsy of the liver in 54 patients with coagulopathy, gross ascites or morbid obesity and suspected liver disease in whom percutaneous liver biopsy was contraindicated. MATERIAL AND METHODS: Forceps biopsy of the liver via the femoral vein was attempted in 54 adult patients with advanced liver disease of unknown aetiology who had coagulation disorders (41 cases), gross ascites (11 cases) or morbid obesity (two cases). In each patient two to six biopsies (average four) were taken using a radial jaw forceps inserted via the right or left femoral vein. RESULTS: The procedure was successful in 53 cases. Hepatic vein catheterization failed in one patient. Adequate liver tissue for diagnosis was obtained in 84% of cases. One patient developed delayed haemorrhage at 12 h from a capsular leak that was undetected during the biopsy procedure. This patient required blood transfusions and laparotomy to control bleeding. There were no deaths in the 53 patients studied. Transient minor chest and shoulder pain was encountered during sheath insertion into a hepatic vein in 23 patients. Three patients developed a femoral vein haematoma, which resolved with conservative treatment. CONCLUSION: Transvenous liver biopsy via the femoral vein is another safe, effective, simple alternative technique of biopsy when the percutaneous route is contraindicated

  3. (Mis)placed central venous catheter in the left superior intercostal vein

    International Nuclear Information System (INIS)

    Padovan, Ranka Stern; Paar, Maja Hrabak; Aurer, Igor

    2010-01-01

    Chest X-ray is routinely performed to check the position of the central venous catheter (CVC) inserted through the internal jugular or subclavian vein, while the further evaluation of CVC malfunction is usually performed by contrast venography. In patients with superior vena cava obstruction, the tip of the catheter is often seen in collateral mediastinal venous pathways, rather than in the superior vena cava. In such cases detailed knowledge of thoracic vessel anatomy is necessary to identify the exact location of the catheter. We report a case of 32-year-old female patient with relapsing mediastinal lymphoma and previous superior vena cava obstruction with collateral azygos-hemiazygos venous pathways. The patient had CVC inserted through the left subclavian vein and its position was detected by CT to be in the dilated left superior intercostal vein and accessory hemiazygos vein. Considering that dilated accessory hemiazygos vein can tolerate infusion, the CVC was left in place and the patient had no complaints related to CVC (mal)position. Furthermore, we present anatomical and radiological observations on the azygos-hemiazygos venous system with the special emphasis on the left superior intercostal vein. Non-contrast CT scans can be a valuable imaging tool in the detection of the CVC position, especially in patients with renal insufficiency and contrast media hypersensitivity

  4. Induced chorioretinal venous anastomosis in experimental retinal branch vein occlusion.

    OpenAIRE

    McAllister, I L; Yu, D Y; Vijayasekaran, S; Barry, C; Constable, I

    1992-01-01

    Iatrogenic retinal vein to choroidal vein anastomoses were created using laser photocoagulation in six of seven dog eyes in which a partial branch retinal vein occlusion had previously been created photochemically. A similar attempt to create an anastomosis was made in six control eyes in which no branch vein occlusion was present. In the eyes in which a branch retinal vein had been created, a venous chorioretinal anastomosis appeared to be present by 3 to 6 weeks. In three control eyes simil...

  5. The CT appearance of the superior intercostal veins

    International Nuclear Information System (INIS)

    Lund, G.

    1982-01-01

    The CT appearance of the superior intercostal veins is described. The veins are more frequently seen on the right side. The right superior intercostal vein should not be misinterpreted as a paraspinal mass when it is large or bulges into the contour of the right lung. A case of stenosis of the left brachiocephalic vein is shown, where the left superior intercostal vein serves as a collateral. (orig.)

  6. Duplication of the Portal Vein: A Case Report

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Sang Won; Shin, Hyeong Cheol; Jou, Sung Shick; Han, Jong Kyu; Kim, Il Young [Soonchunhyang University Cheonan Hospital, Cheonan (Korea, Republic of)

    2009-12-15

    The duplication of the portal vein is an uncommon congenital anomaly. To date, only four cases have been reported in the medical literature. This anomaly can cause portal hypertension in pediatric patients. In addition, duplication of the portal vein has various patterns of connection with a splenic vein or mesenteric veins, and it can lie anterior or posterior to the duodenum. We report the MDCT findings of an adult patient with duplication of the portal vein that was found incidentally

  7. 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

  8. Varicocoelectomy in adolescents: Laparoscopic versus open high ...

    African Journals Online (AJOL)

    Background: Treatment of varicocoele is aimed at eliminating the retrograde reflux of venous blood through the internal spermatic veins. The purpose of this investigation was to compare laparoscopic varicocoelectomy (LV) with open high ligation technique in the adolescent population. Materials and Methods: We ...

  9. Evaluation of Staged Fowler-Stephens Orchiopexy for the High ...

    African Journals Online (AJOL)

    The first stage was done during diagnostic laparoscopy by clipping the internal spermatic artery and vein 2-3 cm superior to the intra-abdominal testis. Six months later the second stage of the procedure in the form of open (67cases) or laparoscopic orchiopexy (11 cases) was performed. Only 65 patients were available for ...

  10. a risk factor for the development of adolescent varicocele

    African Journals Online (AJOL)

    2017-03-02

    Mar 2, 2017 ... Moreover, the presence of hypoxia within the internal spermatic veins of varicocele patients has been recently reported by Lee et al. [12,] who demonstrated that there is an overexpression of locally produced hypoxia- inducible factor-1α in varicocele patients. Hypoxia- inducible factor-1α can stimulate the ...

  11. 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.

  12. ABDUCENS NERVE PALSY AND THROMBOSIS OF THE CEREBRAL VEINS AND SINUSES - A DIAGNOSTIC PITFALL

    Directory of Open Access Journals (Sweden)

    Alexandra J. Tzoukeva

    2012-12-01

    Full Text Available Thrombosis of the cerebral veins and sinuses is an infrequent cerebrovascular disorder. Because the highly variable symptoms, recent neuroimaging plays a key role in the diagnosis. Abducens nerve palsy as a focal neurological deficit is a rare clinical manifestation in these patients. We present two cases with sudden onset of diplopia and headache. Case 1: A 3-year old girl with B cell lymphoblastic leukemia developed bilateral abducens deficit and bilateral optic disc edema after treatment including L-asparaginase. Thrombosis of the right jugular vein, sagittal and right sigmoid sinuses was visualized on magnetic resonance imaging (MRI and magnetic resonance venography (MRV. Symptoms gradually resolved after treatment with enoxiparine and MRV demonstrated recanalization.Case 2: A 75-year old female with medical history of arterial hypertension presented with headache and sudden left abduction deficit. Computerized tomography (CT scan was normal. MRI and MRV revealed aging brain and disruption of venous flow at the left internal jugular vein, suspecting thrombosis. Extracranial colour duplex sonography and CT angiography proved haemodinamic equivalent of left internal jugular vein thrombosis due to sclerotic pathology of aortic arch.Our first case illustrates the role of improved neuroimaging techniques as the best method for diagnosis of cerebral veins and sinuses thrombosis, presenting with abducens nerve palsy. With second case the potential neuroimaging pitfalls concerning the accurate diagnosis of these cerebrovascular disorders with neuro-ophthalmologic manifestation are discussed.

  13. Animal Model of Acute Deep Vein Thrombosis

    International Nuclear Information System (INIS)

    Roy, Sumit; Laerum, Frode; Brosstad, Frank; Kvernebo, Knut; Sakariassen, Kjell S.

    1998-01-01

    Purpose: To develop an animal model of acute deep vein thrombosis (DVT). Methods: In part I of the study nine juvenile domestic pigs were used. Each external iliac vein was transluminally occluded with a balloon catheter. Thrombin was infused through a microcatheter in one leg according to one of the following protocols: (1) intraarterial (IA): 1250 U at 25 U/min in the common femoral artery (n= 3); (2) intravenous (IV): 5000 U in the popliteal vein at 500 U/min (n= 3), or at 100 U/min (n= 3). Saline was administered in the opposite leg. After the animals were killed, the mass of thrombus in the iliofemoral veins was measured. The pudendoepiploic (PEV), profunda femoris (PF), and popliteal veins (PV) were examined. Thrombosis in the tributaries of the superficial femoral vein (SFVt) was graded according to a three-point scale (0, +, ++). In part II of the study IV administration was further investigated in nine pigs using the following three regimens with 1000 U at 25 U/min serving as the control: (1) 1000 U at 100 U/min, (2) 250 U at 25 U/min, (3) 250 U at 6.25 U/min. Results: All animals survived. In part I median thrombus mass in the test limbs was 1.40 g as compared with 0.25 g in the controls (p= 0.01). PEV, PFV and PV were thrombosed in all limbs infused with thrombin. IV infusion was more effective in inducing thrombosis in both the parent veins (mass 1.32-1.78 g) and SVFt (++ in 4 of 6 legs), as compared with IA infusion (mass 0.0-1.16 g; SFVt ++ in 1 of 3 legs). In part II thrombus mass in axial veins ranged from 1.23 to 2.86 g, and showed no relationship with the dose of thrombin or the rate of infusion. Tributary thrombosis was less extensive with 250 U at 25 U/min than with the other regimens. Conclusion: Slow distal intravenous thrombin infusion in the hind legs of pigs combined with proximal venous occlusion induces thrombosis in the leg veins that closely resembles clinical DVT in distribution

  14. Management of reticular veins and telangiectases.

    Science.gov (United States)

    Smith, Philip Coleridge

    2015-11-01

    To review the literature related to the management of reticular varices and telangiectases of the lower limbs to provide guidance on the treatment of these veins. Very few randomised clinical trials are available in this field. A European Guideline has been published on the treatment of reticular varices and telangiectases, which is largely based on the opinion of experts. Older accounts written by individual phlebologists contain extensive advice from their own practice, which is valuable in identifying effective methods of sclerotherapy. All accounts indicate that a history should be taken combined with a clinical and ultrasound examination to establish the full extent of the venous disease. Sclerotherapy is commenced by injecting the larger veins first of all, usually the reticular varices. Later in the same session or in subsequent sessions, telangiectases can be treated by direct injection. Following treatment, the application of class 2 compression stockings for a period of up to three weeks is beneficial but not used universally by all phlebologists. Further sessions can follow at intervals of 2-8 weeks in which small residual veins are treated. Resistant veins can be managed by ultrasound-guided injection of underlying perforating veins and varices. Other treatments including RF diathermy and laser ablation of telangiectases have very limited efficacy in this condition. Sclerotherapy, when used with the correct technique, is the most effective method for the management of reticular varices and telangiectases. © The Author(s) 2015.

  15. First report of Squash vein yellowing virus in watermelon in Guatemala

    Science.gov (United States)

    In this study, we report the first detection of Squash vein yellowing virus (SqVYV)-induced watermelon vine decline in Central America. Symptoms including wilt and collapse of plants at harvest, and non-marketable fruits with internal rind necrosis were observed. This report provides an overview o...

  16. Prognosis of cerebral vein thrombosis presenting as isolated headache: Early vs. late diagnosis

    NARCIS (Netherlands)

    Gameiro, Joana; Ferro, José M.; Canhão, Patricia; Stam, Jan; Barinagarrementeria, Fernando; Lindgren, Arne

    2012-01-01

    Objective: To analyse the outcome of cerebral venous thrombosis (CVT) patients presenting with isolated headache, specifically to compare isolated headache patients with early vs. late CVT diagnosis. Method: In the International Study on Cerebral Vein and Dural Sinus Thrombosis (ISCVT) database we

  17. Human radicular veins : regulation of venous reflux in the absence of valves

    NARCIS (Netherlands)

    van der Kuip, M; Hoogland, P V; Groen, R J

    1999-01-01

    In the literature it is generally assumed that venous reflux within the radicular veins is prevented by the presence of bicuspid valves and narrowing of the transdural part of these vessels. Recently, we performed a human cadaver study of the internal vertebral venous plexus. Surprisingly, a large

  18. 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

  19. Epidemiological study on varicose veins in Budapest.

    Science.gov (United States)

    Bihari, I; Tornoci, L; Bihari, P

    2012-03-01

    To analyse the prevalence and risk factors of varicose veins and chronic venous disease in Budapest. Data were collected using a questionnaire, as well as by performing physical and Doppler ultrasound examination of 566 adult inhabitants of Budapest and some neighbouring villages. The prevalence of lower-extremity varicose veins was 57.1% in the study population. Verified risk factors include advancing age, pregnancy, jobs requiring a lot of standing, blue-collar work and excess body weight. Neither female gender nor the use of oral contraceptives or hormone replacement therapy was identified as a contributing factor. Hungarian prevalence data and risk factors seem to be similar to other European countries.

  20. Superficial Vein Thrombophlebitis in a Football Athlete.

    Science.gov (United States)

    Schleich, Kevin T; Smoot, M Kyle

    2016-03-01

    A 22-year-old professional football player presented to a preparticipation physical examination with a 2-week history of left leg discomfort extending from the groin to the knee over the previous 2 weeks. He was found to have superficial vein thrombophlebitis (SVT) of the left great saphenous vein extending from the knee to within approximately 1.6 cm of the saphenofemoral junction. There is paucity in the literature regarding the management of SVT, particularly in actively training athletes. This case addresses the considerations of anticoagulation management for SVT as well as the unique challenge of managing anticoagulation therapy in an athlete that is actively training.

  1. 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

    Full Text Available 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 difficult to counterfeit. In general, finger-vein recognition systems capture images by using near infrared (NIR illumination in conjunction with a camera. However, such systems can face operational difficulties, since the scattering of light from the skin can make capturing a clear image difficult. To solve this problem, we proposed new image quality enhancement method that measures the direction and thickness of vein lines. This effort represents novel research in four respects. First, since vein lines are detected in input images based on eight directional profiles of a grey image instead of binarized images, the detection error owing to the non-uniform illumination of the finger area can be reduced. Second, our method adaptively determines a Gabor filter for the optimal direction and width on the basis of the estimated direction and thickness of a detected vein line. Third, by applying this optimized Gabor filter, a clear vein image can be obtained. Finally, the further processing of the morphological operation is applied in the Gabor filtered image and the resulting image is combined with the original one, through which finger-vein image of a higher quality is obtained. 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

  2. International

    International Nuclear Information System (INIS)

    Anon.

    1997-01-01

    This rubric reports on 10 short notes about international economical facts about nuclear power: Electricite de France (EdF) and its assistance and management contracts with Eastern Europe countries (Poland, Hungary, Bulgaria); Transnuclear Inc. company (a 100% Cogema daughter company) acquired the US Vectra Technologies company; the construction of the Khumo nuclear power plant in Northern Korea plays in favour of the reconciliation between Northern and Southern Korea; the delivery of two VVER 1000 Russian reactors to China; the enforcement of the cooperation agreement between Euratom and Argentina; Japan requested for the financing of a Russian fast breeder reactor; Russia has planned to sell a floating barge-type nuclear power plant to Indonesia; the control of the Swedish reactor vessels of Sydkraft AB company committed to Tractebel (Belgium); the renewal of the nuclear cooperation agreement between Swiss and USA; the call for bids from the Turkish TEAS electric power company for the building of the Akkuyu nuclear power plant answered by three candidates: Atomic Energy of Canada Limited (AECL), Westinghouse (US) and the French-German NPI company. (J.S.)

  3. 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.

  4. Oxidative stress induced by torsion of the spermatic cord in young rats Estresse oxidativo induzido por torção do cordão espermático em ratos jovens

    Directory of Open Access Journals (Sweden)

    Sergio Botelho Guimarães

    2007-02-01

    Full Text Available PURPOSE: To evaluate the effects of the oxidative stress in an experimental model of torsion/detorsion of the spermatic cord and the legitimacy of this model for oxidative stress studies. METHODS: Forty-eight male Wistar rats were randomized in two groups (n=24: G-1 (Sham and G-2 (Ischemia/Reperfusion. All rats received intraperitoneal saline injections (2.0 ml, at 21, 9, and 1 h before right spermatic cord torsion or first sham operation. Detorsion or second sham operation was carried out 3 h later followed by testis and blood samples collection (T-0. Additional samples were collected at 1-3-6 h time-points for assessment of testis malonaldehyde, glutathione, and plasma total antioxidant power (TAP. RESULTS: Spermatic cord torsion/detorsion induced a significant increase in testicular malonaldehyde contents and a significant decrease in glutathione concentrations in ischemic rats compared with sham animals. Additional increase in malonaldehyde levels occurred during reperfusion in G-2 rats. TAP was similar in both groups denoting absence of systemic effects in this study. CONCLUSION: Torsion/detorsion of the spermatic cord for 3 h induces significant lipid peroxidation and reduction in glutathione content of the testis and is, therefore, a valid model for studying the oxidative stress effects of the ischemia/reperfusion injury in young rat testis.OBJETIVO: Investigar os efeitos do estresse oxidativo utilizando um modelo experimental de torção/destorção do cordão espermático e a aplicabilidade do modelo para estudo do estresse oxidativo. MÉTODOS: Foram utilizados 48 ratos distribuídos aleatoriamente em dois grupos (n=24: G-1 (Simulado e G-2 (Isquemia/Reperfusão. Todos os animais receberam injeções intraperitoniais de solução salina (2,0 ml 21-9-1 horas antes da torção ou primeira operação simulada. A destorção/segunda operação simulada (T-0 foi realizada após 3 horas, com coleta das amostras (testículo e sangue arterial

  5. From vein precipitates to deformation and fluid rock interaction within a SSZ: Insights from the Izu-Bonin-Mariana fore arc

    Science.gov (United States)

    Micheuz, Peter; Quandt, Dennis; Kurz, Walter

    2017-04-01

    International Ocean Discovery Program (IODP) expeditions 352 and 351 drilled through oceanic crust of the Philippine Sea plate. The two study areas are located near the outer Izu-Bonin-Mariana (IBM) fore arc and in the Amami Sankaku Basin. The primary objective was to improve our understanding of supra-subduction zones (SSZ) and the process of subduction initiation. The recovered drill cores during IODP expedition 352 represent approximately 50 Ma old fore arc basalts (FAB) and boninites revealing an entire volcanic sequence of a SSZ. Expedition 351 drilled FAB like oceanic crust similar in age to the FABs of expedition 352. In this study we present data on vein microstructures, geochemical data and isotopic signatures of vein precipitates to give new insights into fluid flow and precipitation processes and deformation within the Izu-Bonin fore arc. Veins formed predominantly as a consequence of hydrofracturing resulting in the occurrence of branched vein systems and brecciated samples. Along these hydrofractures the amount of altered host rock fragments varies and locally alters the host rock completely to zeolites and carbonates. Subordinately extensional veins released after the formation of the host rocks. Cross-cutting relationships of different vein types point to multiple fracturing events subsequently filled with minerals originating from a fluid with isotopic seawater signature. Based on vein precipitates, their morphology and their growth patterns four vein types have been defined. Major vein components are (Mg-) calcite and various zeolites determined by Raman spectra and electron microprobe analyses. Zeolites result from alteration of volcanic glass during interaction with a seawaterlike fluid. Type I veins which are characterized by micritic infill represent neptunian dykes. They predominantly occur in the upper levels of drill cores being the result of an initial volume change subsequently to crystallization of the host rocks. Type II veins are

  6. 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

  7. Transcutaneous laser treatment of leg veins

    NARCIS (Netherlands)

    Meesters, Arne A.; Pitassi, Luiza H. U.; Campos, Valeria; Wolkerstorfer, Albert; Dierickx, Christine C.

    2014-01-01

    Leg telangiectasias and reticular veins are a common complaint affecting more than 80% of the population to some extent. To date, the gold standard remains sclerotherapy for most patients. However, there may be some specific situations, where sclerotherapy is contraindicated such as needle phobia,

  8. Puerperal ovarian vein thrombosis: A case report

    Energy Technology Data Exchange (ETDEWEB)

    Cho, Won Sik; Jeon, Woo Ki; Han, Chang Yul [Inje College Paik Hospital, Pusan (Korea, Republic of)

    1989-08-15

    Puerperal ovarian vein thrombophlebitis(POVT) is a postpartum complication that requires prompt medical treatment to avoid extension of thrombus with potentially life-threatening complications. The prompt noninvasive diagnosing method is CT that defines the location and the extent about the thrombus. There findings will supply future case to be definitely diagnosed and treated without invasive procedures.

  9. Endovascular vein harvest: systemic carbon dioxide absorption.

    Science.gov (United States)

    Maslow, Andrew M; Schwartz, Carl S; Bert, Arthur; Hurlburt, Peter; Gough, Jeffrey; Stearns, Gary; Singh, Arun K

    2006-06-01

    Endovascular vein harvest (EDVH) requires CO(2) insufflation to expand the subcutaneous space, allowing visualization and dissection of the saphenous vein. The purpose of this study was to assess the extent of CO(2) absorption during EDVH. Prospective observational study. Single tertiary care hospital. Sixty patients (30 EDVH and 30 open-vein harvest) undergoing isolated coronary artery bypass graft surgery. Hemodynamic, procedural, and laboratory data were collected prior to (baseline), during, and at it the conclusion (final) of vein harvesting. Data were also collected during cardiopulmonary bypass (CPB). Data were compared by using t tests, analysis of variance, and correlation statistics when needed. There were significant increases in arterial CO(2) (PaCO(2), 35%) and decreases in pH (1.35%) during EDVH. These were associated with increases in heart rate, mean blood pressure, and cardiac output. Within the EDVH group, greater elevations (>10 mmHg) in PaCO2 were more likely during difficult harvest procedures, and these patients exhibited greater increase in heart rate. Elevated CO(2) persisted during CPB, requiring higher systemic gas flows and greater use of phenylephrine to maintain desired hemodynamics. EDVH was associated with systemic absorption of CO(2). Greater absorption was more likely in difficult procedures and was associated with greater hemodynamic changes requiring medical therapy.

  10. What Are Varicose Veins? (For Kids)

    Science.gov (United States)

    ... Recipes for Kids Kids site Sitio para niños How the Body Works Puberty & Growing Up Staying Healthy Staying Safe Recipes & ... those body parts are farthest from the heart. Gravity pulls blood down into your ... down. So the veins have to work extra hard to get that blood back up ...

  11. 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

  12. Incidental retroaortic left innominate vein in adult patient

    Directory of Open Access Journals (Sweden)

    Alexandre Semionov, MD, PhD

    2017-09-01

    Full Text Available Retro-aortic left innominate vein is a rare vascular abnormality, usually associated with congenital heart disease. Here we report a case of isolated retro-aortic left innominate vein in an adult female.

  13. Adventitial cystic disease of the common femoral vein presenting as deep vein thrombosis

    Directory of Open Access Journals (Sweden)

    Young-Kyun Kim

    2016-07-01

    Full Text Available Adventitial cystic disease of the common femoral vein is a rare condition. We herein report the case of a 50-year-old woman who presented with painless swelling in her left lower leg that resembled deep vein thrombosis. She underwent femoral exploration and excision of the cystic wall. The presentation, investigation, treatment, and pathology of this condition are discussed with a literature review.

  14. Vein visualization: patient characteristic factors and efficacy of a new infrared vein finder technology.

    Science.gov (United States)

    Chiao, F B; Resta-Flarer, F; Lesser, J; Ng, J; Ganz, A; Pino-Luey, D; Bennett, H; Perkins, C; Witek, B

    2013-06-01

    We investigated the patient characteristic factors that correlate with identification of i.v. cannulation sites with normal eyesight. We evaluated a new infrared vein finding (VF) technology device in identifying i.v. cannulation sites. Each subject underwent two observations: one using the conventional method (CM) of normal, unassisted eyesight and the other with the infrared VF device, VueTek's Veinsite™ (VF). A power analysis for moderate effect size (β=0.95) required 54 samples for within-subject differences. Patient characteristic profiles were obtained from 384 subjects (768 observations). Our sample population exhibited an overall average of 5.8 [95% confidence interval (CI) 5.4-6.2] veins using CM. As a whole, CM vein visualization were less effective among obese [4.5 (95% CI 3.8-5.3)], African-American [4.6 (95% CI 3.6-5.5 veins)], and Asian [5.1 (95% CI 4.1-6.0)] subjects. Next, the VF technology identified an average of 9.1 (95% CI 8.6-9.5) possible cannulation sites compared with CM [average of 5.8 (95% CI 5.4-6.2)]. Seventy-six obese subjects had an average of 4.5 (95% CI 3.8-5.3) and 8.2 (95% CI 7.4-9.1) veins viewable by CM and VF, respectively. In dark skin subjects, 9.1 (95% CI 8.3-9.9) veins were visible by VF compared with 5.4 (95% CI 4.8-6.0) with CM. African-American or Asian ethnicity, and obesity were associated with decreased vein visibility. The visibility of veins eligible for cannulation increased for all subgroups using a new infrared device.

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

    OpenAIRE

    Park, Young Ho; Park, Kang Ryoung

    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...

  16. Development of Thrombus in a Systemic Vein after Balloon-Occluded Retrograde Transvenous Obliteration of Gastric Varices

    International Nuclear Information System (INIS)

    Yoshimatsu, Rika; Yamagami, Takuji; Tanaka, Osamu; Miura, Hiroshi; Nishimura, Tsunehiko; Okuda, Kotaro; Hashiba, Mitsuoki

    2012-01-01

    To retrospectively evaluate the frequency and risk factors for developing thrombus in a systemic vein such as the infrarenal inferior vena cava or the iliac vein, in which a balloon-occluded retrograde transvenous obliteration (B-RTO) catheter was indwelled. Forty-nine patients who underwent B-RTO for gastric varices were included in this study. The B-RTO procedure was performed from the right femoral vein, and the B-RTO catheter was retained overnight in all patients. Pre- and post-procedural CT scans were retrospectively compared in order to evaluate the development of thrombus in the systemic vein in which the catheter was indwelled. Additionally, several variables were analyzed to assess risk factors for thrombus in a systemic vein. In all 49 patients (100%), B-RTO was technically successful, and in 46 patients (94%), complete thrombosis of the gastric varices was achieved. In 6 patients (12%), thrombus developed in the infrarenal inferior vena cava or the right common-external iliac vein. All thrombi lay longitudinally on the right side of the inferior vena cava or the right iliac vein. One of the aforementioned 6 patients required anticoagulation therapy. No symptoms suggestive of pulmonary embolism were observed. Prothrombin time-international normalized ratio and the addition of 5% ethanolamine oleate iopamidol, on the second day, were related to the development of thrombus. Development of a thrombus in a systemic vein such as the inferior vena cava or iliac vein, caused by indwelling of the B-RTO catheter, is relatively frequent. Physicians should be aware of the possibility of pulmonary embolism due to iliocaval thrombosis.

  17. Palliative treatment of TIPS to portal vein tumor thrombosis complicated with portal vein hypertension

    International Nuclear Information System (INIS)

    Jiang Zaibo; Shan Hong; Guan Shouhai; Zhu Kangshun; Huang Mingsheng; Li Zhengran; Guo Tiansheng; Liu Lang

    2002-01-01

    Objective: To evaluate the palliative therapeutic effects of transjugular intrahepatic portosystemic shunt (TIPS) in portal vein tumor thrombosis (PVTT) complicated with portal vein hypertension, and to discuss the technical skills. Methods: There were 14 cases of end-stage hepatocellular carcinoma complicated with PVTT and portal vein hypertension, the average age was 53.6 yr. There were 8 cases with complete occlusion of main portal vein, 6 eases with incomplete thrombosis, and 5 cases combined with portal vein cavernous transformation. One case had simple hemorrhage, 3 eases had intractable ascites, and 10 cases had hemorrhage accompanied by intractable ascites. Results: The procedure of TIPS was successful in 10 cases, the successful rate was about 71%. The mean portal vein pressure was reduced from 37.2 mm Hg to 18.2 mm Hg, with an average reduction of 19.0 mm Hg. After the procedure of TIPS, the ascites decreased, hemorrhage stopped and the clinical symptoms disappeared. The average survival period was 132.3 days. The procedure were failing in 4 cases. Conclusion: TIPS was an effective palliative therapeutic methods to control the hemorrhage and ascites aroused by hepatic carcinoma complicated with PVTT

  18. Safety of a training program for ultrasound-guided internal jugular vein catheterization in critically ill patients Segurança de um programa de treinamento para punção de veia jugular interna guiada por ultrassom em pacientes críticos

    Directory of Open Access Journals (Sweden)

    Felippe Leopoldo Dexheimer Neto

    2011-08-01

    Full Text Available OBJECTIVES: Evaluate the safety and effectiveness of a training program for performing ultrasound-guided internal jugular vein cannulation in critically ill patients. METHODS: Cohort prospective study, evaluating adult patients admitted in a teaching intensive care unit (ICU. Catheter placement was performed by an ICU medical resident. The patient's baseline characteristics, vessel's position and operator experience were the evaluated variables. The main outcomes were cannulation success rate and incidence of major complications. RESULTS: A total of 118 consecutive patients were enrolled between May 2008 and November 2009. The success rate of ultrasound guided catheter placement was 90% (106/118, 77% in the first attempt. Major complications occurred in 4% of the cases (n = 5 and were not associated with the analyzed variables. Inability to place the guide wire was the reason for 58% (7/12 of the failures. Operators with more than 15 previous ultrasound guided cannulations had an increased success rate (95% vs. 79%, p = 0.01 and increased failure was related to previous catheterization (26% vs. 7%, p = 0.02. CONCLUSION: Learning ultrasound guidance for IJV vein cannulation was safe and feasible in ICU patients. This process was not associated to complications and better results were achieved across the spectrum of operator experienceOBJETIVO: Avaliar a segurança e efetividade de um programa de treinamento para cateterização da veia jugular interna guiada por ultrassom em pacientes críticos. MÉTODOS: Estudo de coorte prospectivo, avaliando pacientes adultos internados em uma unidade de terapia intensiva com programa de ensino. Os médicos residentes do serviço realizaram as punções de veia jugular interna guiadas por ultrassom. Foram avaliadas as características de base dos pacientes, sintopia dos vasos e experiência dos operadores. Os desfechos primários foram a taxa de sucesso da cateterização e a incidência de complica

  19. Galen and his anatomic eponym: vein of Galen.

    Science.gov (United States)

    Ustun, Cagatay

    2004-09-01

    Galen or Galenus was born at Pergamum (now Bergama in Turkey) in 129 A.D., and died in the year 200 A.D. He was a 2nd century Greek philosopher-physician who switched to the medical profession after his father dreamt of this calling for his son. Galen's training and experiences brought him to Alexandria and Rome and he rose quickly to fame with public demonstrations of anatomical and surgical skills. He became physician to emperor Marcus Aurelius and the emperor's ambitious son, Commodus. He wrote prodigiously and was able to preserve his medical research in 22 volumes of printed text, representing half of all Greek medical literature that is available to us today. The structures, the great cerebral vein and the communicating branch of the internal laryngeal nerve, bear his eponym.

  20. Lower extremity dep vein thrombosis in children

    International Nuclear Information System (INIS)

    Perlmutt, L.; Fellows, K.E.; Harvard Medical School, Boston, MA

    1983-01-01

    Of 113 leg venograms performed in patients of all ages between 1969 and 1982, 68 were in children 16 years old or less. The patients were all studied on a tilt table (method of Rabinov and Paulin) in a head-up, 40-50 0 incline without tourniquets, supporting their weight on the unaffected leg. Among the 68 venograms, 12 (18%) were positive for deep vein thrombosis. The clinical settings for thrombosis in children were post-catheterization (two patients), post surgery (two), tumor/tumor therapy (three), drug abuse (one), and idiopathic (three). There were no long-term clinical sequelae in five patients. Pulmonary infarction occurred in three, and three patients required either long-term anticoagulation or IVC clipping. Clinical diagnosis is no more accurate for the diagnosis of deep vein thrombosis in children than it is in adults. Venography is the best method for making an accurate diagnosis and directing subsequent therapy.(orig.)

  1. Varicose vein therapy and nerve lesions.

    Science.gov (United States)

    Hirsch, Tobias

    2017-03-01

    Treating varicose veins using endovenous thermal techniques - especially laser and radio frequency ablation - has emerged as an effective alternative to open surgery with stripping and high ligation. Even though these methods are very gentle and patient-friendly, they are nevertheless accompanied by risks and side effects. Compared to open surgical therapy, the risk of damage to peripheral and motor nerves is reduced; however, it still exists as a result of heat exposure and tumescent anaesthesia. Non-thermal methods that can be applied without tumescent anaesthesia have been introduced to the market. They pose a considerably lower risk of nerve lesions while proving to be much more effective. This paper investigates data on postoperative nerve damage and paraesthesia using internet research (PubMed). It analyses the current state of knowledge regarding non-thermal treatment methods and takes into account the latest developments in the use of cyanoacrylate to close insufficient saphenous veins.

  2. Finger vein recognition with personalized feature selection.

    Science.gov (United States)

    Xi, Xiaoming; Yang, Gongping; Yin, Yilong; Meng, Xianjing

    2013-08-22

    Finger veins are a promising biometric pattern for personalized identification in terms of their advantages over existing biometrics. Based on the spatial pyramid representation and the combination of more effective information such as gray, texture and shape, this paper proposes a simple but powerful feature, called Pyramid Histograms of Gray, Texture and Orientation Gradients (PHGTOG). For a finger vein image, PHGTOG can reflect the global spatial layout and local details of gray, texture and shape. To further improve the recognition performance and reduce the computational complexity, we select a personalized subset of features from PHGTOG for each subject by using the sparse weight vector, which is trained by using LASSO and called PFS-PHGTOG. We conduct extensive experiments to demonstrate the promise of the PHGTOG and PFS-PHGTOG, experimental results on our databases show that PHGTOG outperforms the other existing features. Moreover, PFS-PHGTOG can further boost the performance in comparison with PHGTOG.

  3. Finger Vein Recognition with Personalized Feature Selection

    Directory of Open Access Journals (Sweden)

    Xianjing Meng

    2013-08-01

    Full Text Available Finger veins are a promising biometric pattern for personalized identification in terms of their advantages over existing biometrics. Based on the spatial pyramid representation and the combination of more effective information such as gray, texture and shape, this paper proposes a simple but powerful feature, called Pyramid Histograms of Gray, Texture and Orientation Gradients (PHGTOG. For a finger vein image, PHGTOG can reflect the global spatial layout and local details of gray, texture and shape. To further improve the recognition performance and reduce the computational complexity, we select a personalized subset of features from PHGTOG for each subject by using the sparse weight vector, which is trained by using LASSO and called PFS-PHGTOG. We conduct extensive experiments to demonstrate the promise of the PHGTOG and PFS-PHGTOG, experimental results on our databases show that PHGTOG outperforms the other existing features. Moreover, PFS-PHGTOG can further boost the performance in comparison with PHGTOG.

  4. 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.

  5. Finger vein extraction using gradient normalization and principal curvature

    Science.gov (United States)

    Choi, Joon Hwan; Song, Wonseok; Kim, Taejeong; Lee, Seung-Rae; Kim, Hee Chan

    2009-02-01

    Finger vein authentication is a personal identification technology using finger vein images acquired by infrared imaging. It is one of the newest technologies in biometrics. Its main advantage over other biometrics is the low risk of forgery or theft, due to the fact that finger veins are not normally visible to others. Extracting finger vein patterns from infrared images is the most difficult part in finger vein authentication. Uneven illumination, varying tissues and bones, and changes in the physical conditions and the blood flow make the thickness and brightness of the same vein different in each acquisition. Accordingly, extracting finger veins at their accurate positions regardless of their thickness and brightness is necessary for accurate personal identification. For this purpose, we propose a new finger vein extraction method which is composed of gradient normalization, principal curvature calculation, and binarization. As local brightness variation has little effect on the curvature and as gradient normalization makes the curvature fairly uniform at vein pixels, our method effectively extracts finger vein patterns regardless of the vein thickness or brightness. In our experiment, the proposed method showed notable improvement as compared with the existing methods.

  6. Brucellosis associated with deep vein thrombosis.

    Science.gov (United States)

    Tolaj, Ilir; Mehmeti, Murat; Ramadani, Hamdi; Tolaj, Jasmina; Dedushi, Kreshnike; Fejza, Hajrullah

    2014-11-19

    Over the past 10 years more than 700 cases of brucellosis have been reported in Kosovo, which is heavily oriented towards agriculture and animal husbandry. Here, brucellosis is still endemic and represents an uncontrolled public health problem. Human brucellosis may present with a broad spectrum of clinical manifestations; among them, vascular complications are uncommon. Hereby we describe the case of a 37-year-old male patient with brucellosis complicated by deep vein thrombosis on his left leg.

  7. Angiographic investigation of the male gonadal vein

    International Nuclear Information System (INIS)

    Vajda, J.; Boehm, K.; Horvath, L.; Molnar, Z.

    1980-01-01

    Retrograde angiography of the gonadal vein was carried out in 110 cases. Because of valve-insufficience the left vena spermatica interna filled spontaneously from the vena renalis in the majority (88%) of the cases. In the cases of well functioning valves superselective angiography was carried out. The examination is advised in cases of the following syndromes: varicokele, abdominal tumours, determination of the place of non-palpable testes, Klinefelter syndrome. (L.E.)

  8. Deep vein thrombosis: diagnosis, treatment, and prevention

    Energy Technology Data Exchange (ETDEWEB)

    Stewart, W.P.; Youngswick, F.D.

    Deep vein thrombosis (DVT) is a dangerous complication that may present after elective foot surgery. Because of the frequency with which DVT occurs in the elderly patient, as well as in the podiatric surgical population, the podiatrist should be acquainted with this entity. A review of the diagnosis, treatment, prevention, and the role of podiatry in the management of DVT is discussed in this paper.

  9. Brucellosis associated with deep vein thrombosis

    Directory of Open Access Journals (Sweden)

    Ilir Tolaj

    2014-11-01

    Full Text Available Over the past 10 years more than 700 cases of brucellosis have been reported in Kosovo, which is heavily oriented towards agriculture and animal husbandry. Here, brucellosis is still endemic and represents an uncontrolled public health problem. Human brucellosis may present with a broad spectrum of clinical manifestations; among them, vascular complications are uncommon. Hereby we describe the case of a 37-year-old male patient with brucellosis complicated by deep vein thrombosis on his left leg.

  10. Brucellosis Associated with Deep Vein Thrombosis

    Science.gov (United States)

    Tolaj, Ilir; Mehmeti, Murat; Ramadani, Hamdi; Tolaj, Jasmina; Dedushi, Kreshnike; Fejza, Hajrullah

    2014-01-01

    Over the past 10 years more than 700 cases of brucellosis have been reported in Kosovo, which is heavily oriented towards agriculture and animal husbandry. Here, brucellosis is still endemic and represents an uncontrolled public health problem. Human brucellosis may present with a broad spectrum of clinical manifestations; among them, vascular complications are uncommon. Hereby we describe the case of a 37-year-old male patient with brucellosis complicated by deep vein thrombosis on his left leg. PMID:25568754

  11. Brucellosis Associated with Deep Vein Thrombosis

    OpenAIRE

    Tolaj, Ilir; Mehmeti, Murat; Ramadani, Hamdi; Tolaj, Jasmina; Dedushi, Kreshnike; Fejza, Hajrullah

    2014-01-01

    Over the past 10 years more than 700 cases of brucellosis have been reported in Kosovo, which is heavily oriented towards agriculture and animal husbandry. Here, brucellosis is still endemic and represents an uncontrolled public health problem. Human brucellosis may present with a broad spectrum of clinical manifestations; among them, vascular complications are uncommon. Hereby we describe the case of a 37-year-old male patient with brucellosis complicated by deep vein thrombosis on his left ...

  12. Absent right superior caval vein in situs solitus

    DEFF Research Database (Denmark)

    Lytzen, Rebekka; Sundberg, Karin; Vejlstrup, Niels

    2015-01-01

    Introduction In up to 0.07% of the general population, the right anterior cardinal vein obliterates and the left remains open, creating an absent right superior caval vein and a persistent left superior caval vein. Absent right superior caval vein is associated with additional congenital heart...... disease in about half the patients. We wished to study the consequences of absent right superior caval vein as an incidental finding on prenatal ultrasonic malformation screening. Material and methods This is a retrospective case series study of all foetuses diagnosed with absent right superior caval vein...... no postnatal complications. All children were found to have healthy hearts at follow-up. CONCLUSIONS: In all cases, the findings proved to be a benign condition with no clinical manifestations or complications. Although isolated absent right superior caval vein does not seem to affect the outcome, associated...

  13. 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. 

  14. Compressed sensing approach for wrist vein biometrics.

    Science.gov (United States)

    Lantsov, Aleksey; Ryabko, Maxim; Shchekin, Aleksey

    2018-04-01

    The work describes features of the compressed sensing (CS) approach utilized for development of a wearable system for wrist vein recognition with single-pixel detection; we consider this system useful for biometrics authentication purposes. The CS approach implies use of a spatial light modulation (SLM) which, in our case, can be performed differently-with a liquid crystal display or diffusely scattering medium. We show that compressed sensing combined with above-mentioned means of SLM allows us to avoid using an optical system-a limiting factor for wearable devices. The trade-off between the 2 different SLM approaches regarding issues of practical implementation of CS approach for wrist vein recognition purposes is discussed. A possible solution of a misalignment problem-a typical issue for imaging systems based upon 2D arrays of photodiodes-is also proposed. Proposed design of the wearable device for wrist vein recognition is based upon single-pixel detection. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  15. Laser photocoagulation for retinal vein occlusion

    Directory of Open Access Journals (Sweden)

    K. A. Mirzabekova

    2015-01-01

    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. 

  16. Metabolic effects of portal vein sensing.

    Science.gov (United States)

    Mithieux, G

    2014-09-01

    The extrinsic gastrointestinal nerves are crucial in the sensing of nutrients and hormones and its translation in terms of control of food intake. Major macronutrients like glucose and protein are sensed by the extrinsic nerves located in the portal vein walls, which signal to the brain and account for the satiety phenomenon they promote. Glucose is sensed in the portal vein by neurons expressing the glucose receptor SGLT3, which activate the main regions of the brain involved in the control of food intake. Proteins indirectly act on food intake by inducing intestinal gluconeogenesis and its sensing by the portal glucose sensor. The mechanism involves a prior antagonism by peptides of the μ-opioid receptors present in the portal vein nervous system and a reflex arc with the brain inducing intestinal gluconeogenesis. In a comparable manner, short-chain fatty acids produced from soluble fibre act via intestinal gluconeogenesis to exert anti-obesity and anti-diabetic effects. In the case of propionate, the mechanism involves a prior activation of the free fatty acid receptor FFAR3 present in the portal nerves and a reflex arc initiating intestinal gluconeogenesis. © 2014 John Wiley & Sons Ltd.

  17. Patterning of leaf vein networks by convergent auxin transport pathways.

    Science.gov (United States)

    Sawchuk, Megan G; Edgar, Alexander; Scarpella, Enrico

    2013-01-01

    The formation of leaf vein patterns has fascinated biologists for centuries. Transport of the plant signal auxin has long been implicated in vein patterning, but molecular details have remained unclear. Varied evidence suggests a central role for the plasma-membrane (PM)-localized PIN-FORMED1 (PIN1) intercellular auxin transporter of Arabidopsis thaliana in auxin-transport-dependent vein patterning. However, in contrast to the severe vein-pattern defects induced by auxin transport inhibitors, pin1 mutant leaves have only mild vein-pattern defects. These defects have been interpreted as evidence of redundancy between PIN1 and the other four PM-localized PIN proteins in vein patterning, redundancy that underlies many developmental processes. By contrast, we show here that vein patterning in the Arabidopsis leaf is controlled by two distinct and convergent auxin-transport pathways: intercellular auxin transport mediated by PM-localized PIN1 and intracellular auxin transport mediated by the evolutionarily older, endoplasmic-reticulum-localized PIN6, PIN8, and PIN5. PIN6 and PIN8 are expressed, as PIN1 and PIN5, at sites of vein formation. pin6 synthetically enhances pin1 vein-pattern defects, and pin8 quantitatively enhances pin1pin6 vein-pattern defects. Function of PIN6 is necessary, redundantly with that of PIN8, and sufficient to control auxin response levels, PIN1 expression, and vein network formation; and the vein pattern defects induced by ectopic PIN6 expression are mimicked by ectopic PIN8 expression. Finally, vein patterning functions of PIN6 and PIN8 are antagonized by PIN5 function. Our data define a new level of control of vein patterning, one with repercussions on other patterning processes in the plant, and suggest a mechanism to select cell files specialized for vascular function that predates evolution of PM-localized PIN proteins.

  18. Patterning of leaf vein networks by convergent auxin transport pathways.

    Directory of Open Access Journals (Sweden)

    Megan G Sawchuk

    Full Text Available The formation of leaf vein patterns has fascinated biologists for centuries. Transport of the plant signal auxin has long been implicated in vein patterning, but molecular details have remained unclear. Varied evidence suggests a central role for the plasma-membrane (PM-localized PIN-FORMED1 (PIN1 intercellular auxin transporter of Arabidopsis thaliana in auxin-transport-dependent vein patterning. However, in contrast to the severe vein-pattern defects induced by auxin transport inhibitors, pin1 mutant leaves have only mild vein-pattern defects. These defects have been interpreted as evidence of redundancy between PIN1 and the other four PM-localized PIN proteins in vein patterning, redundancy that underlies many developmental processes. By contrast, we show here that vein patterning in the Arabidopsis leaf is controlled by two distinct and convergent auxin-transport pathways: intercellular auxin transport mediated by PM-localized PIN1 and intracellular auxin transport mediated by the evolutionarily older, endoplasmic-reticulum-localized PIN6, PIN8, and PIN5. PIN6 and PIN8 are expressed, as PIN1 and PIN5, at sites of vein formation. pin6 synthetically enhances pin1 vein-pattern defects, and pin8 quantitatively enhances pin1pin6 vein-pattern defects. Function of PIN6 is necessary, redundantly with that of PIN8, and sufficient to control auxin response levels, PIN1 expression, and vein network formation; and the vein pattern defects induced by ectopic PIN6 expression are mimicked by ectopic PIN8 expression. Finally, vein patterning functions of PIN6 and PIN8 are antagonized by PIN5 function. Our data define a new level of control of vein patterning, one with repercussions on other patterning processes in the plant, and suggest a mechanism to select cell files specialized for vascular function that predates evolution of PM-localized PIN proteins.

  19. 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

  20. Absence of Middle Hepatic Vein Combined with Retro-Aortic Left Renal Vein: a Very Rare Case Report

    Directory of Open Access Journals (Sweden)

    Sezer Akçer

    2012-06-01

    Full Text Available The hepatic and renal veins drain into the inferior vena cava. The upper group of hepatic veins consists of three veins which extend to the posterior face of the liver to join the inferior cava. The left renal vein passes anterior to the aorta just below the origin of the superior mesenteric artery. We detected a variation in the hepatic and renal veins in a multislice CT angiogram of a nine-year-old male patient in the Radiology Department of Afyon Kocatepe University Medical School. The upper group hepatic veins normally drains into the inferior vena cava as three separate trunks, namely the right, left and middle. In our case, we found that only the right and left hepatic veins existed and the middle hepatic vein was absent. Furthermore, the left renal vein, which normally passes anterior to the abdominal aorta, was retro-aortic. Left renal vein variations are of great importance in planning retroperitoneal surgery and vascular interventions. Knowledge of a patient’s hepatic vein and renovascular anatomy and determining their variations and anomalies are of critical importance to abdominal operations, transplantations and preoperative evaluation of endovascular interventions.

  1. Head and Neck Veins of the Mouse. A Magnetic Resonance, Micro Computed Tomography and High Frequency Color Doppler Ultrasound Study.

    Directory of Open Access Journals (Sweden)

    Marcello Mancini

    Full Text Available To characterize the anatomy of the venous outflow of the mouse brain using different imaging techniques. Ten C57/black male mice (age range: 7-8 weeks were imaged with high-frequency Ultrasound, Magnetic Resonance Angiography and ex-vivo Microcomputed tomography of the head and neck. Under general anesthesia, Ultrasound of neck veins was performed with a 20 MHz transducer; head and neck Magnetic Resonance Angiography data were collected on 9.4 T or 7 T scanners, and ex-vivo Microcomputed tomography angiography was obtained by filling the vessels with a radiopaque inert silicone rubber compound. All procedures were approved by the local ethical committee. The dorsal intracranial venous system is quite similar in mice and humans. Instead, the mouse Internal Jugular Veins are tiny vessels receiving the sigmoid sinuses and tributaries from cerebellum, occipital lobe and midbrain, while the majority of the cerebral blood, i.e. from the olfactory bulbs and fronto-parietal lobes, is apparently drained through skull base connections into the External Jugular Vein. Three main intra-extracranial anastomoses, absent in humans, are: 1 the petrosquamous sinus, draining into the posterior facial vein, 2 the veins of the olfactory bulb, draining into the superficial temporal vein through a foramen of the frontal bone 3 the cavernous sinus, draining in the External Jugular Vein through a foramen of the sphenoid bone. The anatomical structure of the mouse cranial venous outflow as depicted by Ultrasound, Microcomputed tomography and Magnetic Resonance Angiography is different from humans, with multiple connections between intra- and extra-cranial veins.

  2. 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.)

  3. 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.

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

    International Nuclear Information System (INIS)

    Lee, Kee Hyung; Lee, Seung Chul; Bae, Man Gil; Seo, Heung Suk; Kim, Soon Yong; Lee, Min Ho; Kee, Choon Suhk; Park, Kyung Nam

    1986-01-01

    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.

  5. Mesenteric vein thrombosis after percitaneous transhepatic portal vein catheterisation for the localisation of an insulinoma

    International Nuclear Information System (INIS)

    Luska, G.; Langer, H.E.; Le Blanc, S.; Medizinische Hochschule Hannover

    1984-01-01

    The authors report on a fatal mesenteric vein thrombosis following an uncomplicated percutaneous transhepatic portal vein catheterisation for the localisation of an insulinoma. Several hours after the procedure the patient developed an acute abdomen. An emergency laparotomy revealed a haemorrhagic infarct of the ileum. The resected specimen showed an acute phlebitis with fresh thrombus. The cause of the phlebothrombosis was thought to be intimal damage from high osmolar contrast medium. There was no evidence of damage due to the catheder, either on the phlebogram or pathologically. (orig.) [de

  6. Comparison of microbubble presence in the right heart during mechanochemical and radiofrequency ablation for varicose veins.

    Science.gov (United States)

    Moon, K H; Dharmarajah, B; Bootun, R; Lim, C S; Lane, Tra; Moore, H M; Sritharan, K; Davies, A H

    2017-07-01

    Objective Mechanochemical ablation is a novel technique for ablation of varicose veins utilising a rotating catheter and liquid sclerosant. Mechanochemical ablation and radiofrequency ablation have no reported neurological side-effect but the rotating mechanism of mechanochemical ablation may produce microbubbles. Air emboli have been implicated as a cause of cerebrovascular events during ultrasound-guided foam sclerotherapy and microbubbles in the heart during ultrasound-guided foam sclerotherapy have been demonstrated. This study investigated the presence of microbubbles in the right heart during varicose vein ablation by mechanochemical abaltion and radiofrequency abaltion. Methods Patients undergoing great saphenous vein ablation by mechanochemical abaltion or radiofrequency ablation were recruited. During the ablative procedure, the presence of microbubbles was assessed using transthoracic echocardiogram. Offline blinded image quantification was performed using International Consensus Criteria grading guidelines. Results From 32 recruited patients, 28 data sets were analysed. Eleven underwent mechanochemical abaltion and 17 underwent radiofrequency abaltion. There were no neurological complications. In total, 39% (11/28) of patients had grade 1 or 2 microbubbles detected. Thirty-six percent (4/11) of mechanochemical abaltion patients and 29% (5/17) of radiofrequency ablation patients had microbubbles with no significant difference between the groups ( p=0.8065). Conclusion A comparable prevalence of microbubbles between mechanochemical abaltion and radiofrequency ablation both of which are lower than that previously reported for ultrasound-guided foam sclerotherapy suggests that mechanochemical abaltion may not confer the same risk of neurological events as ultrasound-guided foam sclerotherapy for treatment of varicose veins.

  7. Unusual Presentation of Recurrent Pyogenic Bilateral Psoas Abscess Causing Bilateral Pulmonary Embolism by Iliac Vein Compression

    OpenAIRE

    Ijaz, Mohsin; Sakam, Sailaja; Ashraf, Umair; Marquez, Jose Gomez

    2015-01-01

    Patient: Male, 47 Final Diagnosis: Bilateral psoas abscess • acute lower extremity deep vein thrombosis • bilateral pulmonary embolism Symptoms: Progressive left leg swelling • productive cough with whitish sputum • right flank pain Medication: Antibiotics and anticoagulation Clinical Procedure: CT-guided percutaneous drain placement Specialty: Internal Medicine/Critical Care Objective: Unusual presentation Background: Psoas abscesses are a known cause of back pain, but they have not been rep...

  8. Arabidopsis thaliana Ei-5: Minor Vein Architecture Adjustment Compensates for Low Vein Density in Support of Photosynthesis.

    Science.gov (United States)

    Stewart, Jared J; Polutchko, Stephanie K; Demmig-Adams, Barbara; Adams, William W

    2018-01-01

    An Arabidopsis thaliana accession with naturally low vein density, Eifel-5 (Ei-5), was compared to Columbia-0 (Col-0) with respect to rosette growth, foliar vein architecture, photosynthesis, and transpiration. In addition to having to a lower vein density, Ei-5 grew more slowly, with significantly lower rates of rosette expansion, but had similar capacities for photosynthetic oxygen evolution on a leaf area basis compared to Col-0. The individual foliar minor veins were larger in Ei-5, with a greater number of vascular cells per vein, compared to Col-0. This compensation for low vein density resulted in similar values for the product of vein density × phloem cell number per minor vein in Ei-5 and Col-0, which suggests a similar capacity for foliar sugar export to support similar photosynthetic capacities per unit leaf area. In contrast, the product of vein density × xylem cell number per minor vein was significantly greater in Ei-5 compared to Col-0, and was associated not only with a higher ratio of water-transporting tracheary elements versus sugar-transporting sieve elements but also significantly higher foliar transpiration rates per leaf area in Ei-5. In contrast, previous studies in other systems had reported higher ratios of tracheary to sieve elements and higher transpiration rate to be associated with higher - rather than lower - vein densities. The Ei-5 accession thus further underscores the plasticity of the foliar vasculature by illustrating an example where a higher ratio of tracheary to sieve elements is associated with a lower vein density. Establishment of the Ei-5 accession, with a low vein density but an apparent overcapacity for water flux through the foliar xylem network, may have been facilitated by a higher level of precipitation in its habitat of origin compared to that of the Col-0 accession.

  9. Mineral vein dynamics modeling (FRACS). Phase 1

    Energy Technology Data Exchange (ETDEWEB)

    Urai, J.; Virgo, S.; Arndt, M. [RWTH Aachen (Germany). Geologie-Endogene Dynamik] [and others

    2013-07-15

    The Mineral Vein Dynamics Modeling group ''FRACS'' is a team of 7 research groups from the Universities of Mainz, Aachen, Tuebingen, Karlsruhe, Bayreuth, ETH Zuerich and Glasgow working on an understanding of the dynamic development of fracturing, fluid flow and fracture sealing. World-class field laboratories, especially carbonate sequences from the Oman Mountains are studied and classified. State of the art numerical programs are written, expanded and used to simulate the dynamic interaction of fracturing, flow and resealing and the results are compared with the natural examples. Newest analytical technologies including laser scanning, high resolution X-ray microtomography, fluid inclusion and isotope analysis are performed to understand and compare the results of simulations with natural examples. A new statistical program was developed to classify the natural fracture and vein systems and compare them with dynamic numerical simulations and analytical models. The results of the first project phase are extremely promising. Most of the numerical models have been developed up to the stage where they can be used to simulate the natural examples. The models allow a definition of the first proxies for high fluid pressure and tectonic stresses. It was found out that the Oman Mountains are a complex and very dynamic system that constantly fractures and reseals from the scale of small veins up to the scale of large normal and strike slip faults. The numerical simulations also indicate that the permeability of such systems is not a constant but that the system adjusts to the driving force, for ex-ample high fluid pressure. When the system reseals fast a fluctuating behavior can be observed in the models where the system constantly fractures and reseals, which is in accordance with the observation of the natural laboratory.

  10. Interferon-induced central retinal vein thrombosis

    International Nuclear Information System (INIS)

    Nazir, L.; Husain, A.; Haroon, W.; Shaikh, M.I.; Mirza, S.A.; Khan, Z.

    2012-01-01

    A middle-aged lady presented with sudden onset of unilateral central retinal vein thrombosis after completing 6 months course of interferon and ribavirin for chronic hepatitis C infection. She had no risk factors and all her thrombophilia workup was normal, however, she was found to be dyslipidemic which may have contributed to atherosclerosis and predispose to thrombosis. Despite anticoagulation, her visual acuity deteriorated. This case illustrates the possibility of unpredictable visual complication of interferon. Frequent eye examination should be undertaken in patients having underlying risk factors like diabetes, hypertension or dyslipidemia undergoing interferon therapy. (author)

  11. Interferon-induced central retinal vein thrombosis

    Energy Technology Data Exchange (ETDEWEB)

    Nazir, L; Husain, A; Haroon, W; Shaikh, M I; Mirza, S A; Khan, Z

    2012-11-15

    A middle-aged lady presented with sudden onset of unilateral central retinal vein thrombosis after completing 6 months course of interferon and ribavirin for chronic hepatitis C infection. She had no risk factors and all her thrombophilia workup was normal, however, she was found to be dyslipidemic which may have contributed to atherosclerosis and predispose to thrombosis. Despite anticoagulation, her visual acuity deteriorated. This case illustrates the possibility of unpredictable visual complication of interferon. Frequent eye examination should be undertaken in patients having underlying risk factors like diabetes, hypertension or dyslipidemia undergoing interferon therapy. (author)

  12. Aneurysmal malformation of the extrahepatic portal vein: a case report

    International Nuclear Information System (INIS)

    Lee, Jeong Min; Kang, Sung Soo; Kim, Chong Soo; Han, Hyeun Young

    1999-01-01

    Aneurysmal malformation of the portal vein is a rare entity. To our knowledge, only scattered reports of portal vein aneurysms appear in the literature in English, and there is no previously published report in Korean. We describe a case exhibiting aneurysmal malformation of the extrahepatic portal vein at the hepatic hilum ; the findings demonstrated by ultrasound, CT and angiography are discussed, a review of previously described cases is included

  13. David M. Malone President, International Development Research ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    malonedm

    independent research and policy development institution in New York. From 1994 to 1998 ... His widely reviewed book The International Struggle Over Iraq: Politics in the ... also to write in a lighter vein, often for the Literary Review of Canada.

  14. CT of portal vein tumor thrombosis. Usefulness of dynamic CT

    Energy Technology Data Exchange (ETDEWEB)

    Takemoto, Kazumasa; Inoue, Yuichi; Tanaka, Masahiro; Nemoto, Yutaka; Nakamura, Kenji [Osaka City Univ. (Japan). Faculty of Medicine

    1983-08-01

    We evaluated CT findings of portal vein tumor thrombosis in 16 hepatomas by plain, contrast and dynamic CT. Plain and contrast CT findings were an enlargement of the portal vein (81%), intraluminal low density area (63%). Dynamic CT enhanced the diagnostic capability of the tumor thrombus as a relatively low density area because of the marked enhancement of the portal vein. In addition, dynamic CT newly demonstrated hyperdense peripheral ring (35%) and arterio portal shunt (35%). It is advisable to select the scan level to include the portal vein when dynamic CT is performed in the patient of hepatocellular carcinoma.

  15. 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.

  16. Characterization of a porcine model of chronic superficial varicose veins.

    Science.gov (United States)

    Jones, Gregory T; Grant, Mark W; Thomson, Ian A; Hill, B Geraldine; van Rij, André M

    2009-06-01

    Previous animal models of venous disease, while inducing venous hypertension and valvular insufficiency, do not produce superficial varicose veins. In this study, we aimed to develop and characterize a pig-based model of superficial varicose veins. Right femoral arteriovenous fistulae (AVF) were surgically fashioned in young adult pigs. Animals were examined at postoperative times up to 15 weeks to determine the development of varicose veins and measurement of both blood pressure and flow velocities within the superficial thigh veins. Histology and vascular corrosion casts were used to characterize the resulting structural venous alterations. Porcine pathophysiological features were compared with those of human primary superficial varicose veins. Gross superficial varicosities developed over the ipsilateral medial thigh region after an initial lag period of 1-2 weeks. Veins demonstrated retrograde filling with valvular incompetence, and a moderate, non-pulsatile, venous hypertension, which was altered by changes in posture and Valsalva. Venous blood flow velocities were elevated to 15-30 cm/s in varicose veins. Structurally, pig varicose veins were enlarged, tortuous, had valvular degeneration, and regions of focal medial atrophy with or without overlying intimal thickening. The superficial varicose veins, which developed within this model, have a pathophysiology that is consistent with that observed in humans. The porcine femoral AVF model is proposed as a suitable experimental model to evaluate the pathobiology of superficial venous disease. It may also be suitable for the evaluation of treatment interventions including drug therapy.

  17. [Portal perfusion with right gastroepiploic vein flow in liver transplant].

    Science.gov (United States)

    Mendoza-Sánchez, Federico; Javier-Haro, Francisco; Mendoza-Medina, Diego Federico; González-Ojeda, Alejandro; Cortés-Lares, José Antonio; Fuentes-Orozco, Clotilde

    Liver transplantation in patients with liver cirrhosis, portal vein thrombosis, and cavernous transformation of the portal vein, is a complex procedure with high possibility of liver graft dysfunction. It is performed in 2-19% of all liver transplants, and has a significantly high mortality rate in the post-operative period. Other procedures to maintain portal perfusion have been described, however there are no reports of liver graft perfusion using right gastroepiploic vein. A 20 year-old female diagnosed with cryptogenic cirrhosis, with a Child-Pugh score of 7 points (class "B"), and MELD score of 14 points, with thrombosis and cavernous transformation of the portal vein, severe portal hypertension, splenomegaly, a history of upper gastrointestinal bleeding due to oesophageal varices, and left renal agenesis. The preoperative evaluation for liver transplantation was completed, and the right gastroepiploic vein of 1-cm diameter was observed draining to the infrahepatic inferior vena cava and right suprarenal vein. An orthotopic liver transplantation was performed from a non-living donor (deceased on January 30, 2005) using the Piggy-Back technique. Portal vein perfusion was maintained using the right gastroepiploic vein, and the outcome was satisfactory. The patient was discharged 13 days after surgery. Liver transplantation was performed satisfactorily, obtaining an acceptable outcome. In this case, the portal perfusion had adequate blood flow through the right gastroepiploic vein. Copyright © 2015 Academia Mexicana de Cirugía A.C. Publicado por Masson Doyma México S.A. All rights reserved.

  18. Vein Patch Closure Using Below the Knee Greater Saphenous Vein for Femoral Endarterectomy Procedures is Not Always a Safe Choice

    Directory of Open Access Journals (Sweden)

    M. Berner

    Full Text Available : Background: The complication of vein patch rupture is well described after carotid patch angioplasty; however, there is a paucity of data about the safety of vein patch closure in the setting of femoral endarterectomy. Methods/results: From May 2012 to May 2015, 115 femoral endarterectomies with patch closure were performed. A patch rupture occurred in three cases (2.6% with a mortality rate of 66% (2/3. In all cases the greater saphenous vein below the knee was used as patch material. Discussion/conclusion: Vein patches, particularly from small calibre veins, should be excluded in femoral endarterectomy procedures as they pose a substantial risk of rupture. Keywords: Angioplasty, Patch rupture, Femoral artery, Patch, Great saphenous vein

  19. Suitability of Varicose Veins for Endovenous Treatments

    International Nuclear Information System (INIS)

    Goode, S. D.; Kuhan, G.; Altaf, N.; Simpson, R.; Beech, A.; Richards, T.; MacSweeney, S. T.; Braithwaite, B. D.

    2009-01-01

    The aim of the study was to assess the suitability of radiofrequency ablation (RFA), endovenous laser ablation (EVLA), and foam sclerotherapy (FS) for patients with symptomatic varicose veins (VVs). The study comprised 403 consecutive patients with symptomatic VVs. Data on 577 legs from 403 consecutive patients with symptomatic VVs were collected for the year 2006. Median patient age was 55 years (interquartile range 45-66), and 62% patients were women. A set of criteria based on duplex ultrasonography was used to select patients for each procedure. Great saphenous vein (GSV) reflux was present in 77% (446 of 577) of legs. Overall, 328 (73%) of the legs were suitable for at least one of the endovenous options. Of the 114 legs with recurrent GSV reflux disease, 83 (73%) were suitable to receive endovenous therapy. Patients with increasing age were less likely to be suitable for endovenous therapy (P = 0.03). Seventy-three percent of patients with VVs caused by GSV incompetence are suitable for endovenous therapy.

  20. Percutaneous transhepatic portal vein stenting in a patient with benign non-transplant postoperative portal vein stenosis: A case report

    OpenAIRE

    Madhusudhan, KS; Agrawal, Nikhil; Srivastava, Deep N; Pal, Sujoy; Gupta, Arun K

    2013-01-01

    Extrahepatic portal vein stenosis is caused by a variety of benign and malignant diseases and results in development of symptoms due to portal hypertension. Benign post-surgical adhesions causing portal vein stenosis in non-transplant population is an uncommon etiology of portal hypertension. Endovascular treatment of such patients with angioplasty and stenting is uncommonly reported in literature. We report a case of portal hypertension caused by benign postoperative portal vein fibrosis, su...

  1. Multimodal ultrasonographic assessment of leiomyosarcoma of the femoral vein in a patient misdiagnosed as having deep vein thrombosis

    Science.gov (United States)

    Zhang, Mei; Yan, Feng; Huang, Bin; Wu, Zhoupeng; Wen, Xiaorong

    2017-01-01

    Abstract Rationale: Primary leiomyosarcoma (LMS) of the vein is a rare tumor that arises from the smooth muscle cells of the vessel wall and has an extremely poor prognosis. This tumor can occur in vessels such as the inferior vena cava, great saphenous vein, femoral vein, iliac vein, popliteal vein, and renal vein; the inferior vena cava is the most common site. LMS of the femoral vein can result in edema and pain in the lower extremity; therefore, it is not easy to be differentiated from deep vein thrombosis (DVT). Moreover, virtually no studies have described the ultrasonographic features of LMS of the vein in detail. Patient concerns: We present a case of a 55-year-old woman with LMS of the left femoral vein that was misdiagnosed as having deep vein thrombosis (DVT) on initial ultrasonographic examination. The patient began to experience edema and pain in her left leg seven months previously. She was diagnosed as having DVT on initial ultrasonographic examination, but the DVT treatment that she had received for 7 months failed to improve the status of her left lower limb. Diagnoses: She subsequently underwent re-examination by means of a multimodal ultrasonographic imaging approach (regular B-mode imaging, color Doppler imaging, pulsed-wave Doppler imaging, contrast-enhanced ultrasonography), which confirmed a diagnosis of LMS. Interventions: This patient was treated successfully with surgery. Outcomes: This case demonstrates that use of multiple ultrasonographic imaging techniques can be helpful to diagnose LMS accurately. Detection of vasculature in a dilated vein filled with a heterogeneous hypoechoic substance on ultrasonography is a sign of a tumor. Lessons: The pitfall of misdiagnosing this tumor as DVT is a useful reminder. PMID:29145269

  2. Spontaneous bilateral subclavian vein thrombosis in a 40-year-old man: A case report.

    Science.gov (United States)

    Huang, Chun-Yen; Wu, Yen-Hung; Yeh, I-Jeng; Chen, Yun-Yi; Kung, Fung-Ya

    2018-04-01

    Paget-Schroetter syndrome (PSS) is an uncommon condition that refers to primary (spontaneous) thrombosis of the deep veins that drain the upper extremities because of anatomical anomalies or repetitive strenuous arm activity. Bilateral spontaneous upper extremity deep-vein thrombosis (UEDVT) is an extremely rare phenomenon in adults, which may be misdiagnosed by physicians in acute settings. A 40-year-old man presented to our emergency department because of progressive left upper arm swelling for 1 day. He denied fever, chest pain, dyspnea, trauma, or any other systemic disease before. The swollen left arm also had no local heat or redness with normal radius pulsation. He was a laborer who lifted heavy objects. Blood examination included tests for complete blood count, renal function, liver function, blood coagulation profile, cardiac enzyme levels, and D-dimer level. Results showed that the white blood cell count, renal and liver functions, and cardiac enzyme levels were all within their normal ranges, except for the elevated D-dimer level (1.93 mg/L). Chest radiography and electrocardiography were performed with nonspecific findings. Subsequently, computed tomographic angiography was recommended for the suspected deep-vein thrombosis. The report showed venous thrombosis involving the bilateral subclavian and internal jugular veins. Heparin and enoxaparin were prescribed for this patient, with loading and maintenance doses. He was then admitted to our cardiovascular ward for further treatment. The patient was discharged 9 days later in a stable condition. Emergency physicians should consider the rare condition of UEDVT when a healthy patient presents with acute arm swelling. Patient history taking should be thorough, especially concerning the risk factors of secondary causes and possible frequent vigorous heavy lifting and overhead motion. Without secondary risk factors, primary upper deep-vein thrombosis might be suspected. Further laboratory tests and imaging

  3. Reconstruction of a total avulsion of the hepatic veins and the suprahepatic inferior vena cava secondary to blunt thoracoabdominal trauma.

    Science.gov (United States)

    Kaemmerer, Daniel; Daffner, Wolfgang; Niwa, Martin; Kuntze, Thomas; Hommann, Merten

    2011-02-01

    Blunt injury to the inferior vena cava is a rare but dramatic event having a high mortality up to 80%. The mortality increases after total avulsion especially in combination with secondary intra-abdominal injuries. We report on a 15-year-old boy who sustained a blunt trauma with a total, partially covered avulsion of the hepatic veins and the suprahepatic inferior vena cava. We treated the patient under internal bypassing of the retrohepatic vena cava by using the heart-lung machine and reconstructed the hepatic veins and suprahepatic vena cava with a conduit made of pericard.

  4. Ultrasound evaluation of techniques for internal jugular vein puncture in children Avaliação ultra-sonográfica das técnicas de punção da veia jugular interna em crianças

    Directory of Open Access Journals (Sweden)

    Sérgio Tomaz Schettini

    2008-10-01

    Full Text Available PURPOSE: To determine by ultrasound which access and position the child must stay to obtain the best transversal section of the right Internal Jugular Vein (RIJV allowing a safer puncture. METHODS: Three possible accesses to the RIJV, anterior, lateral and posterior, from 57 healthy children, were analyzed through ultrasound images in a sequence of positions of the head, in supine position, with or without a roll under the scapula: head centered in neutral position with and without a roll (NPP and NP; contra lateral rotation with and without a roll (CLRP and CLR, neutral position and the patient raised in 30° in Trendelenburg position (TDG. To analyze the results it was applied one statistic method, with variation analysis to the same individuals. Basic Procedures: Ultrasound evaluation in each one of the proposed positions. RESULTS: The statistical analysis of the results observed that the lateral puncture with the patient in the neutral position, in Trendelemburg without a roll, offers a bigger area in comparison to all the other options of puncture and positioning of the patient (pOBJETIVO: Determinar pelo ultra-som qual o melhor acesso e posicionamento da criança com o intuito de se obter a melhor secção transversal da veia jugular interna direita (VJID, permitindo uma punção com maior segurança. MÉTODOS: Três possíveis acessos a VJID, anterior, lateral e posterior foram analisados pela ultrassonografia em uma sequência de diferentes posições da cabeça, estando o paciente em posição supina com ou sem um coxim sob a escápula; cabeça na posição neutra; (NPP E NP; rotação lateral da cabeça (CLRP e CLR, posição neutra com o paciente em posição de Trendlemburg a 30(0 (TDG. Para analisar os resultados foi aplicado um método estatístico com análise variada sobre os mesmos indivíduos. Procedimentos básicos: Avaliação ultrassonográfica em cada uma das posições propostas. RESULTADOS: Pela análise estatística dos

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

    International Nuclear Information System (INIS)

    Demaerel, P.; Petre, C.; Wilms, G.; Plets, C.

    1999-01-01

    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.)

  6. 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

    2017-11-01

    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.

  7. A Modified Technique of Basilic Vein Transposition for Haemodialysis

    International Nuclear Information System (INIS)

    Chaudhary, F. A.; Parvez, Z.

    2014-01-01

    Objective: To modify the technique of basilic vein transposition for vascular accesss for haemodialysis aiming at better maturation rate, longer survival of fistula and lesser complications. Study Design: Case series. Place and Duration of Study: Shaikh Zayed Hospital and Omer Hospital, Lahore, from February 2008 to July 2011. Methodology: Patients referred for basilic vein transposition for haemodialysis vascular access were prospectively enrolled. The surgical technique included small tracking incisions, an extra 3 - 4 cm of vein length harvesting to avoid tension in the vein in its new course, an oval arteriotomy and a smooth curved pathway, away from vein harvesting incision to avoid entrapment of vein in the scar. Maturation rate, fistula survival and other complications were noted. Results: There was no immediate failure in 51 patients. The complications during follow-up period were infection and thrombosis, bleeding and non-development of basilic vein in 2 patients each; and false aneurysm formation in one. Four patients died during follow-up period. The maturation time was 4.9 A +- 1.1 weeks. The early patency rate was 92.2%, same at 6 months and 90.7% at 12 months. Conclusion: Arteriovenous fistula constructed with modified technique of basilic vein transposition is an acceptable and valid option of vascular access for haemodialysis. (author)

  8. 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.

  9. The Short Saphenous Vein: A Viable Alternative Conduit for ...

    African Journals Online (AJOL)

    This novel position allowed for two members of the surgical team to operate at the same time, thus ... along the ultrasound-marked vein positions similar to when harvesting the LSV. Once the veins were harvested and ... occlusion compared to LSV grafts utilized in the same procedure,[8] it was brought back to prominence ...

  10. 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

  11. 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....

  12. Portal vein thrombosis after splenectomy for beta-thalassemia major

    International Nuclear Information System (INIS)

    Al-Hawsawi, Zakaria M.; Tarawah, Ahmed M.; Hassan, Ruhul Amin A.; Haouimi, Ammar S.

    2004-01-01

    Portal vein thrombosis is a recognized complication after splenectomy for beta-thalassemia major due to the chronic hypercoagulable state which has been recognized to exist in childhood thalassemia and contribute to thromboembolic events. We reporting one patient with beta-thalassemia major developed portal vein thrombosis following splenectomy. (author)

  13. Portal Vein Stenting for Portal Biliopathy with Jaundice

    Energy Technology Data Exchange (ETDEWEB)

    Hyun, Dongho, E-mail: mesentery@naver.com; Park, Kwang Bo, E-mail: kbjh.park@samsung.com [Sungkyunkwan University School of Medicine, Department of Radiology, Samsung Medical Center (Korea, Republic of); Lim, Seong Joo [Konyang University, Department of Radiology, College of Medicine, Konyang University Hospital (Korea, Republic of); Hwang, Jin Ho [Hallym University Sacred Heart Hospital, Department of Radiology (Korea, Republic of); Sinn, Dong Hyun [Sungkyunkwan University School of Medicine, Department of Medicine, Samsung Medical Center (Korea, Republic of)

    2016-04-15

    Portal biliopathy refers to obstruction of the bile duct by dilated peri- or para-ductal collateral channels following the main portal vein occlusion from various causes. Surgical shunt operation or endoscopic treatment has been reported. Herein, we report a case of portal biliopathy that was successfully treated by interventional portal vein recanalization.

  14. Reporting and Staging of Testicular Germ Cell Tumors: The International Society of Urological Pathology (ISUP) Testicular Cancer Consultation Conference Recommendations.

    Science.gov (United States)

    Verrill, Clare; Yilmaz, Asli; Srigley, John R; Amin, Mahul B; Compérat, Eva; Egevad, Lars; Ulbright, Thomas M; Tickoo, Satish K; Berney, Daniel M; Epstein, Jonathan I

    2017-06-01

    The International Society of Urological Pathology held a conference devoted to issues in testicular and penile pathology in Boston in March 2015, which included a presentation and discussion led by the testis microscopic features working group. This conference focused on controversies related to staging and reporting of testicular tumors and was preceded by an online survey of the International Society of Urological Pathology members. The survey results were used to initiate discussions, but decisions were made by expert consensus rather than voting. A number of recommendations emerged from the conference, including that lymphovascular invasion (LVI) should always be reported and no distinction need be made between lymphatic or blood invasion. If LVI is equivocal, then it should be regarded as negative to avoid triggering unnecessary therapy. LVI in the spermatic cord is considered as category pT2, not pT3, unless future studies provide contrary evidence. At the time of gross dissection, a block should be taken just superior to the epididymis to define the base of the spermatic cord, and direct invasion of tumor in this block indicates a category of pT3. Pagetoid involvement of the rete testis epithelium must be distinguished from rete testis stromal invasion, with only the latter being prognostically useful. Percentages of different tumor elements in mixed germ cell tumors should be reported. Although consensus was reached on many issues, there are still areas of practice that need further evidence on which to base firm recommendations.

  15. On the dragnosis of deep vein thrombosis

    International Nuclear Information System (INIS)

    Olsson, C.-G.

    1979-01-01

    Clinical and laboratory diagnostic methods were studied in 301 consecutive patients with suspected deep vein thrombosis (DVT). Unexpectedly, phlebography (the reference method) was found to cause DVT in estimated 48 % of patients without initial DVT. Using a new type of contrast medium, however, no thrombotic complications were found. - Neither clinical examination nor plethysmography were found to give reliable results. Using a modified technique for radioisotope detection, high sensitivity to DVT was found with the 125 I-fibrinogen uptake test (within 2 days) and a newly developed 99 Tcsup(m)-plasmin test (within one hour). Since both tests showed low specificity, they are reliable as screening tests to exclude DVT, but not as independent diagnostic methods. (author)

  16. Leiomyosarcoma of the great saphenous vein

    Directory of Open Access Journals (Sweden)

    Alexandre Campos Moraes Amato

    2015-06-01

    Full Text Available A 56-year-old male patient presented with a complaint of two painful, hard, palpable nodules in the right lower limb. A Doppler ultrasound scan revealed the presence of nodules, likely to be neoplastic. Computed angiography showed two solid hypervascular nodules in the right great saphenous vein, fed by branches of the posterior tibial artery. Embolization of the nodules using surgical cyanoacrylate was performed, followed by an excisional biopsy. Anatomical pathology and immunohistochemical analysis identified the nodule as a high-grade leiomyosarcoma, characterized by ten mitotic figures per ten high-power fields, necrosis and cell pleomorphism. Immunohistochemical analysis results were positive for caldesmon and desmin labeling. A second surgical procedure was performed to enlarge the free margins.

  17. Portal Vein Embolization: What Do We Know?

    Energy Technology Data Exchange (ETDEWEB)

    Denys, Alban, E-mail: Alban.Denys@chuv.ch [Centre Hospitalo Universitaire Vaudois, Department of Radiology and Interventional Radiology Unit (Switzerland); Prior, John [Centre Hospitalo Universitaire Vaudois, Department of Nuclear Medicine (Switzerland); Bize, Pierre; Duran, Rafael [Centre Hospitalo Universitaire Vaudois, Department of Radiology and Interventional Radiology Unit (Switzerland); Baere, Thierry De [Institut Gustave Roussy, Department of Interventional Radiology (France); Halkic, Nermin; Demartines, Nicolas [Centre Hospitalo Universitaire Vaudois, Department of Visceral Surgery (Switzerland)

    2012-10-15

    Portal vein embolization (PVE) has been developed to increase the size of the future remnant liver (FRL) left in place after major hepatectomy, thus reducing the risk of postoperative liver insufficiency. PVE consist in embolizing preoperatively portal branches of the segments that will be resected. Indication is based on preoperative measurements of the FRL by computed tomography and its ratio with either the theoretical liver volume or by direct measurement of the functional liver volume. After PVE, the volume and function of the FRL increases in 3 to 6 weeks, permitting extensive resections in patients otherwise contraindicated for liver resection. The PVE technique is variable from one center to another; however n-butyl-cyano-acrylate provides an interesting compromise between hypertrophy rate and procedure risk.

  18. Unusual death due to a bleeding from a varicose vein: a case report

    Directory of Open Access Journals (Sweden)

    Fragkouli Kleio

    2012-09-01

    Full Text Available Abstract Background Varicose veins are a common entity presenting a worldwide distribution. Although they are usually benign, sometimes are proved to be a threatening condition. Massive hemorrhage is an unusual complication of this common venous pathology that demands immediate medical intervention. Case presentation We present a case of a 66-year-old woman found dead in her house surrounded by a large quantity of blood. Autopsy revealed a 7 mm ulcer on the internal surface of the left lower leg communicating with a varicose vein, signs of exsanguinations and liver cirrhosis. Toxicological analysis was negative. Conclusion Massive hemorrhage from a ruptured varicosity is a severe medical emergency. Awareness of the risk of massive hemorrhage may provoke preventive treatment to be undertaken so as terminal loss of consciousness and a subsequent unattended death to be averted.

  19. 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.

  20. Acute paraumbilical vein recanalization: an unusual complication of acute pancreatitis

    Directory of Open Access Journals (Sweden)

    R J Foster

    2015-04-01

    Full Text Available Acute pancreatitis is associated with a number of well-known complications and imaging findings. Spontaneous recanalization of the paraumbilical veins as a consequence of pancreatitis in a patient with an otherwise normal liver is, however, a rare entity. This case report depicts this unusual complication as a consequence of gallstone pancreatitis in a patient with a non-cirrhotic liver and no clinical or radiological evidence of portal hypertension. There was recanalization of the paraumbilical veins followed by thrombosis, which is believed to have propagated in a retrograde fashion into distal branches of the otherwise patent portal vein. A literature search for similar cases such as this has yielded no results. Although rare, clinicians and radiologists alike need to be aware of this finding. This case discussion highlights the embryology and anatomy of the paraumbilical veins, as well as discusses the management of paraumbilical and portal vein thrombosis.

  1. Neurological sequelae from brachiocephalic vein stenosis.

    Science.gov (United States)

    Herzig, David W; Stemer, Andrew B; Bell, Randy S; Liu, Ai-Hsi; Armonda, Rocco A; Bank, William O

    2013-05-01

    Stenosis of central veins (brachiocephalic vein [BCV] and superior vena cava) occurs in 30% of hemodialysis patients, rarely producing intracranial pathology. The authors present the first cases of BCV stenosis causing perimesencephalic subarachnoid hemorrhage and myoclonic epilepsy. In the first case, a 73-year-old man on hemodialysis presented with headache and blurry vision, and was admitted with presumed idiopathic intracranial hypertension after negative CT studies and confirmatory lumbar puncture. The patient mildly improved until hospital Day 3, when he experienced a seizure; emergency CT scans showed perimesencephalic subarachnoid hemorrhage. Cerebral angiography failed to find any vascular abnormality, but demonstrated venous congestion. A fistulogram found left BCV occlusion with jugular reflux. The occlusion could not be reopened percutaneously and required open fistula ligation. Postoperatively, symptoms resolved and the patient remained intact at 7-month follow-up. In the second case, a 67-year-old woman on hemodialysis presented with right arm weakness and myoclonic jerks. Admission MRI revealed subcortical edema and a possible dural arteriovenous fistula. Cerebral angiography showed venous engorgement, but no vascular malformation. A fistulogram found left BCV stenosis with jugular reflux, which was immediately reversed with angioplasty and stent placement. Postprocedure the patient was seizure free, and her strength improved. Seven months later the patient presented in myoclonic status epilepticus, and a fistulogram revealed stent occlusion. Angioplasty successfully reopened the stent and she returned to baseline; she was seizure free at 4-month follow-up. Central venous stenosis is common with hemodialysis, but rarely presents with neurological findings. Prompt recognition and endovascular intervention can restore normal venous drainage and resolve symptoms.

  2. Puerperal ovarian vein thrombosis: two case reports.

    Science.gov (United States)

    Angelini, Marta; Barillari, Giovanni; Londero, Ambrogio P; Bertozzi, Serena; Bernardi, Sergio; Petri, Roberto; Driul, Lorenza; Marchesoni, Diego

    2013-02-01

    Ovarian vein thrombosis (OVT) is an uncommon but potentially serious complication in the early postpartum. Two case studies seem to prove the point: Case 1 A 24-year-old woman was transferred to our hospital with the chief complaint of abdominal pain radiating to the right thigh, vomit, diarrhea, and a slight pyrexia (37.6 °C rectal). Five days earlier, she had a spontaneous vaginal delivery after labor induction. The woman appeared slightly distressed because of pain; vital signs were found to be normal and the CRP elevated (129.9 mg/L). Abdominal examination was remarkable for tenderness by palpation in the right lower quadrant with no rebound tenderness or guarding. Pelvic examination was remarkable for mild right adnexal tenderness. Abdominal-pelvic computer tomography with contrast medium revealed a 2.5-cm OVT having extended into the inferior vena cava for 14 cm with a slight peripheral edema. The patient was treated with nadroparin 0.6 cc (5700 IU) bid and warfarin 5 mg since the attainment of the therapeutic INR range. Case 2 A 31-year-old twin-pregnant woman had an emergency cesarean section at 35 gestational weeks because of hypertension complicated by increased liver enzymes, diuresis contraction, and continuous lower back pain bilaterally radiating to the groins. One day after delivery, CT scan that was performed because of onward anemia showed a pelvic, perihepatic, and perisplenic blood effusion, and a 1-cm right OVT extended to the inferior vena cava below renal veins for 28 mm. She underwent exploratory laparotomy and blood transfusion, and because of respiratory insufficiency she was transferred to a second level center with ICU facility, where she was placed under a suprarenal inferior vena cava filter, and AngioJet Rheolytic Thrombectomy for acute pulmonary embolism was performed.

  3. Arterial Levels of Oxygen Stimulate Intimal Hyperplasia in Human Saphenous Veins via a ROS-Dependent Mechanism

    Science.gov (United States)

    Joddar, Binata; Firstenberg, Michael S.; Reen, Rashmeet K.; Varadharaj, Saradhadevi; Khan, Mahmood; Childers, Rachel C.; Zweier, Jay L.; Gooch, Keith J.

    2015-01-01

    Saphenous veins used as arterial grafts are exposed to arterial levels of oxygen partial pressure (pO2), which are much greater than what they experience in their native environment. The object of this study is to determine the impact of exposing human saphenous veins to arterial pO2. Saphenous veins and left internal mammary arteries from consenting patients undergoing coronary artery bypass grafting were cultured ex vivo for 2 weeks in the presence of arterial or venous pO2 using an established organ culture model. Saphenous veins cultured with arterial pO2 developed intimal hyperplasia as evidenced by 2.8-fold greater intimal area and 5.8-fold increase in cell proliferation compared to those freshly isolated. Saphenous veins cultured at venous pO2 or internal mammary arteries cultured at arterial pO2 did not develop intimal hyperplasia. Intimal hyperplasia was accompanied by two markers of elevated reactive oxygen species (ROS): increased dihydroethidium associated fluorescence (4-fold, ppO2 is suggested by the observation that chronic exposure to tiron, a ROS scavenger, during the two-week culture period, blocked intimal hyperplasia. Electron paramagnetic resonance based oximetry revealed that the pO2 in the wall of the vessel tracked that of the atmosphere with a ~30 mmHg offset, thus the cells in the vessel wall were directly exposed to variations in pO2. Monolayer cultures of smooth muscle cells isolated from saphenous veins exhibited increased proliferation when exposed to arterial pO2 relative to those cultured at venous pO2. This increased proliferation was blocked by tiron. Taken together, these data suggest that exposure of human SV to arterial pO2 stimulates IH via a ROS-dependent pathway. PMID:25799140

  4. Ultrasound guided implantation of chest port systems via the lateral subclavian vein

    International Nuclear Information System (INIS)

    Zaehringer, M.; Hilgers, J.; Krueger, K.; Strohe, D.; Bangard, C.; Neumann, L.; Lackner, K.; Warm, M.; Reiser, M.; Toex, U.

    2006-01-01

    Purpose: Retrospective analysis of the success and complication rates of chest port implantation via the lateral subclavian vein. Materials and methods: Between January 2003 and June 2004, the lateral subclavian vein in 271 patients (186 women, 85 men, mean age 53.2 years) was punctured guided by ultrasound. This access was used to insert a port system, and the catheter tip was placed at the cavoatrial junction. The port reservoir was implanted in a subcutaneous infraclavicular pocket and fixed to the fascia of the pectoralis muscle. Indications for port implantation were chemotherapy (n=239), total parenteral nutrition (n=2) and intravenous medication (n=30). The patient follow-up was mainly performed either by the oncology division of the department of gynecology or by the department of internal medicine. Results: A chest port catheter system was successfully implanted in all patients. The catheter remained in place for a mean duration of 269.4 days (SD 192.3 days). No complications occurred during implantation. In the post-interventional period, 6 catheter dysfunctions were found (thrombotic 0.09 per 1000 catheter days; mechanic 0.05 per 1000 catheter days). While one local infection occurred in the early post-interventional period, 3 local and 15 systemic infections were independent of the port catheter placement (0.39 per 1000 catheter days). The rate of port catheter explantations due to dysfunction or infection was 0.07 per 1000 catheter days. Conclusion: Ultrasound-guided puncture of the lateral subclavian vein is a safe procedure for the insertion of central venous port catheter systems and had a very low complication rate in our study. For further evaluation of our port placement technique, prospective studies compared to placement through the internal jugular vein are necessary. (orig.)

  5. Contralateral Deep Vein Thrombosis after Iliac Vein Stent Placement in Patients with May-Thurner Syndrome.

    Science.gov (United States)

    Le, Trong Binh; Lee, Taeg Ki; Park, Keun-Myoung; Jeon, Yong Sun; Hong, Kee Chun; Cho, Soon Gu

    2018-04-25

    To investigate the incidence and potential causes of contralateral deep vein thrombosis (DVT) after common iliac vein (CIV) stent placement in patients with May-Thurner syndrome (MTS). Data of 111 patients (women: 73%) who had CIV stent implantation for symptomatic MTS at a single center were retrospectively analyzed. Mean patient age was 63.1 ± 15.2 years. Median follow-up was 36 months (range, 1-142 months). Stent location was determined by venogram and classified as extended to the inferior vena cava (IVC), covered the confluence, or confined to the iliac vein. Potential causes of contralateral DVT were presumed based on venographic findings. The relationship between stent location and contralateral DVT was analyzed. Ten patients (9%, men/women: 4/6) exhibited contralateral DVT at a median timing of 40 months (range, 6-98 months). Median age was 69 years (range, 42-85 years). Median follow-up was 73.5 months (range, 20-134 months). Potential causes were venous intimal hyperplasia (VIH) (n = 7), "jailing" (n = 2), and indeterminate (n = 1). All patients with VIH had previous CIV stents overextended to the IVC. Overextension of CIV stent was associated with contralateral DVT (P VIH should be considered a potential cause. Copyright © 2018 SIR. Published by Elsevier Inc. All rights reserved.

  6. Percutaneous closure of patent ductus arteriosus in interrupted inferior caval vein through femoral vein approach

    Directory of Open Access Journals (Sweden)

    Endale Tefera

    2014-01-01

    Full Text Available Percutaneous closure of the patent arterial duct in patients with interrupted inferior caval vein poses a technical challenge. A 12-year-old girl with a patent ductus arteriosus (PDA and interrupted inferior caval vein is described in this report. The diagnosis of interrupted inferior caval vein and azygos continuation was made in the catheterization laboratory. A catheter was advanced and snared in the descending aorta. An exchange wire was advanced through the catheter and snared in the descending aorta. Then, an Amplatzer TorqVue 2 delivery sheath was advanced over the wire from the venous side and again snared in the descending aorta. An Amplatzer duct occluder (ADO size 8/6 was advanced through the sheath while still holding the sheath with a snare. The device was opened. The sheath was then unsnared once the aortic disc was completely out. The sheath and the device were pulled back into the duct and the device was successfully implanted. The device was then released and it attained a stable position. An aortic angiogram was performed which showed complete occlusion.

  7. Percutaneous closure of patent ductus arteriosus in interrupted inferior caval vein through femoral vein approach

    International Nuclear Information System (INIS)

    Tefera, Endale; Bermudez-Cañete, Ramon

    2014-01-01

    Percutaneous closure of the patent arterial duct in patients with interrupted inferior caval vein poses a technical challenge. A 12-year-old girl with a patent ductus arteriosus (PDA) and interrupted inferior caval vein is described in this report. The diagnosis of interrupted inferior caval vein and azygos continuation was made in the catheterization laboratory. A catheter was advanced and snared in the descending aorta. An exchange wire was advanced through the catheter and snared in the descending aorta. Then, an Amplatzer TorqVue 2 delivery sheath was advanced over the wire from the venous side and again snared in the descending aorta. An Amplatzer duct occluder (ADO) size 8/6 was advanced through the sheath while still holding the sheath with a snare. The device was opened. The sheath was then unsnared once the aortic disc was completely out. The sheath and the device were pulled back into the duct and the device was successfully implanted. The device was then released and it attained a stable position. An aortic angiogram was performed which showed complete occlusion

  8. 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

  9. Treatment of hepatic encephalopathy by retrograde transcaval coil embolization of an ileal vein-to-right gonadal vein portosystemic shunt

    International Nuclear Information System (INIS)

    Nishie, Akihiro; Yoshimitsu, Kengo; Honda, Hiroshi; Kaneko, Kuniyuki; Kuroiwa, Toshiro; Fukuya, Tatsuro; Irie, Hiroyuki; Ninomiya, Toshiharu; Yoshimitsu, Takahiro; Hirakata, Hideki; Okuda, Seiya; Masuda, Kouji

    1997-01-01

    A 43-year-old non-cirrhotic woman suffered from encephalopathy caused by an extrahepatic portosystemic shunt between the ileal vein and inferior vena cava via the right gonadal vein. Percutaneous transcatheter embolization with stainless steel coils was performed by the retrograde systemic venous approach. Encephalopathy improved dramatically

  10. Balloon-occluded retrograde transvenous obliteration of gastric varix draining via the left inferior phrenic vein into the left hepatic vein

    International Nuclear Information System (INIS)

    Ibukuro, Kenji; Mori, Koichi; Tsukiyama, Toshitaka; Inoue, Yoshihiro; Iwamoto, Yukako; Tagawa, Kazumi

    1999-01-01

    We encountered a patient with gastric varix draining not via the usual left suprarenal vein but via the left inferior phrenic vein joining the left hepatic vein. Transfemoral balloon-occluded retrograde transvenous obliteration (BRTO) of the varix was performed under balloon occlusion of the left inferior phrenic vein via the left hepatic vein and retrograde injection of the sclerosing agent (5% of ethanolamine oleate) into the gastric varix. Disappearance of the gastric varix was confirmed on endoscopic examination 2 months later.

  11. Supracardiac total anomalous pulmonary venous connection with a descending vertical vein.

    Science.gov (United States)

    Shah, Sejal; Singh, Mukesh; John, Colin; Maheshwari, Sunita

    2009-10-01

    The commonly used Darling classification for total anomalous pulmonary venous connection (TAPVC) consists of supracardiac, cardiac, infracardiac, and mixed types (Craig et al., Lab Invest 6:44-64, 1967). In supracardiac TAPVC, the common pulmonary vein drains superiorly into the left innominate vein, the superior vena cava, or the azygos vein by way of an ascending vertical vein. We describe a case of supracardiac TAPVC draining into the azygos vein atypically by way of a descending vertical vein.

  12. Insights into the mechanics of en-échelon sigmoidal vein formation using ultra-high resolution photogrammetry and computed tomography

    Science.gov (United States)

    Thiele, Samuel T.; Micklethwaite, Steven; Bourke, Paul; Verrall, Michael; Kovesi, Peter

    2015-08-01

    Two novel techniques, photo based reconstruction (photogrammetry) and computed tomography (CT), are used to investigate the formation of an exceptional array of sigmoidal veins in a hand sample from Cape Liptrap, Southern Victoria, and to provide constraint on models for their development. The accuracies of the photogrammetric models were tested by comparison with a laser scan generated three dimensional (3D) model. The photogrammetric model was found to be accurate to at least 0.25 mm and substantially more detailed than the laser scan. A methodology was developed by which 3D structural measurements could be extracted from the photogrammetric model. This was augmented with the CT model which, through its capacity to elucidate internal structure, was used to constrain the geometry and linkage of structures within the rock volume. The photogrammetric and CT data were then combined with detailed photomicrographs to evaluate the evolution of the sigmoidal veins in the sample. The angle between the sigmoidal vein margins and an inferred shear zone, as well as the orientations of the crystal fibres, were found to imply a rotation of >27°. However coeval pressure solution seams and older veinlets in the rock bridges between the veins were only found to have rotated by ∼10°, an observation not easily explained using existing models for sigmoidal vein formation. A new model is proposed in which a significant component of sigmoidal vein geometry is due to localised dilation caused by slip on the pressure solution seams. The process involves strain partitioning onto pressure solution seams, which leads to exaggeration of sigmoidal vein geometries. If not accounted for, the apparent vein rotation due to slip partitioning introduces errors into calculations of simple shear and volume strain based on sigmoidal arrays of this type. Furthermore, the CT data demonstrated that in 3D the veins are continuous and channel-like, implying a far higher degree of connectivity and

  13. Duplex sonography of the near-surface leg veins; Duplexsonographie der oberflaechlichen Beinvenen

    Energy Technology Data Exchange (ETDEWEB)

    Mendoza, E.

    2007-07-01

    The book contains the following contributions: The ultrasonograph, selection of the ultrasonic transducer, anatomy of the near-surface vein system, physiology of the near-surface vein system, varicose status classification, systematics of the duplex sonography of near-surface leg veins, provocational maneuver for the duplex sonographic varicose diagnostics, exploration of vena saphena parva, perforans veins, side branches, phlebitis, sonography for varicose therapy, postsurgical sonography, deep leg veins, examination of near-surface leg veins for the pathology of the deep vein system, differential diagnostic clarification of leg oedema from the phlebologic-lymphological view, diagnostic side features along the near-surface leg veins.

  14. Ipsilateral testicular necrosis and atrophy after 1,080-degree torsion of the spermatic cord in rats Necrose e atrofia do testículo ipsilateral após torção de 1080 graus do cordão espermático em ratos

    Directory of Open Access Journals (Sweden)

    Frederico Ramalho Romero

    2009-04-01

    Full Text Available PURPOSE: To assess the incidence of testicular necrosis/atrophy immediately after 1 to 4 hours of 1,080-degree torsion of the spermatic cord, and 60 days after detorsion of the spermatic cord. METHODS: 42 rats were divided in 7 groups. Except for the control group, surgical torsion of the right spermatic cord was performed in all groups (T0. After 1, 2, or 4 hours of torsion, each group underwent either ipsilateral orchiectomy (groups OT1, OT2, and OT4, or detorsion of the spermatic cord and observation for 60 days (groups DT1, DT2, and DT4, before they were evaluated for the presence of testicular necrosis/atrophy. RESULTS: Only one rat (5.5% in groups OT1, OT2, and OT4 had testicular necrosis, in comparison with six rats (33.3% in groups DT1, DT2, and DT4 (p=0.04. The incidence of testicular necrosis/atrophy was not different between subgroups T1, T2, and T4, and the control group (p>0.05. There was, however, a tendency toward greater incidence of necrosis/atrophy in the rats in group DT4. CONCLUSION: The incidence of testicular necrosis/atrophy immediately after 1 to 4 hours of 1,080-degree torsion of the spermatic cord is 5.5%, in comparison with 33.3% sixty days after detorsion of the spermatic cord.OBJETIVO: Avaliar a incidência de necrose/atrofia testicular imediatamente após 1 a 4 horas de torção de 1080 graus do cordão espermático e 60 dias após a destorção do cordão espermático. MÉTODOS: 42 ratos foram separados em 7 grupos. Exceto para o grupo controle, todos os animais foram submetidos à torção operatória do cordão espermático direito (T0. Após 1, 2 ou 4 horas de torção, cada grupo foi submetido a orquiectomia ipsilateral (grupos OT1, OT2 e OT4, ou destorção do cordão espermático e observação por 60 dias (grupos DT1, DT2 e DT4, antes de serem avaliados para a presença de necrose/atrofia testicular. RESULTADOS: Somente um rato (5,5% nos grupos OT1, OT2 e OT4 apresentou necrose testicular em comparação com

  15. Conventional tomographic hilar anatomy emphasizing the pulmonary veins

    International Nuclear Information System (INIS)

    Genereux, G.P.

    1983-01-01

    The pulmonary hili are a frequent site of interpretive uncertainty because of thir complex anatomy. The right hilar shadow relates primarily to the ascending and descending pulmonary arteries and the right superior pulmonary vein, whereas the left hilar density accrues from the left pulmonary artery, left descending pulmonary artery, and left superior pulmonary vein. The right and left superoir pulmonary veins are intimately associated with and inseparable from the arteries. Knowledge of the course of these veins facilitates their identification on conventional tomograms. The right and left inferior pulmonary veins lie behind the lower hili and contribute only a small increment to the normal hilar density; the horizontal course of these vessels readily distinguishes them from the vertically oriented lower lobe arteries. Prominence of both the right and left superior and inferior veins may cause hilar pseudotumors. Conventional tomograms are most helpful in understanding plain radiographs. A multiview approach in anteroposterior, 55 0 posterior oblique, and lateral projections is recommended for a complete assessment. Computed tomography in transaxial sections adds further understanding of spatial relations in the hili, including the contributions of the pulmonary veins

  16. Non-contact finger vein acquisition system using NIR laser

    Science.gov (United States)

    Kim, Jiman; Kong, Hyoun-Joong; Park, Sangyun; Noh, SeungWoo; Lee, Seung-Rae; Kim, Taejeong; Kim, Hee Chan

    2009-02-01

    Authentication using finger vein pattern has substantial advantage than other biometrics. Because human vein patterns are hidden inside the skin and tissue, it is hard to forge vein structure. But conventional system using NIR LED array has two drawbacks. First, direct contact with LED array raise sanitary problem. Second, because of discreteness of LEDs, non-uniform illumination exists. We propose non-contact finger vein acquisition system using NIR laser and Laser line generator lens. Laser line generator lens makes evenly distributed line laser from focused laser light. Line laser is aimed on the finger longitudinally. NIR camera was used for image acquisition. 200 index finger vein images from 20 candidates are collected. Same finger vein pattern extraction algorithm was used to evaluate two sets of images. Acquired images from proposed non-contact system do not show any non-uniform illumination in contrary with conventional system. Also results of matching are comparable to conventional system. We developed Non-contact finger vein acquisition system. It can prevent potential cross contamination of skin diseases. Also the system can produce uniformly illuminated images unlike conventional system. With the benefit of non-contact, proposed system shows almost equivalent performance compared with conventional system.

  17. 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%.

  18. 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.

  19. Applied anatomic study of testicular veins in adult cadavers and in human fetuses

    Directory of Open Access Journals (Sweden)

    Luciano A. Favorito

    2007-04-01

    Full Text Available OBJECTIVES: Analyze the anatomic variations of the testicular veins in human cadavers and fetuses. MATERIALS AND METHODS: One hundred male adult cadavers and 24 fetuses were studied. Four anatomic aspects were considered: 1 Number of testicular veins, 2 The local of vein termination, 3 Type and number of collaterals present and 4 Testicular vein termination angle. RESULTS: Cadavers - Right side - One testicular vein occurred in 85% and 2 veins in 5% of the cases. There were communicating veins with the colon in 21% of the cases. Left side - One testicular vein occurred in 82%, two veins in 15%, three veins in 2% and four veins in 1% of the cases. There were communicating veins with the colon in 31% of the cases. Fetuses - Right side -One testicular vein occurred in all cases. This vein drained to the vena cava in 83.3% of the cases, to the junction of the vena cava with the renal vein in 12.5% and to the renal vein in 4.2%. There were communicating veins with the colon in 25% of the cases. Left side - One testicular vein occurred in 66.6% of the cases, and 2 veins in occurred 33.3%. Communicating veins with the colon were found in 41.6% of the cases. CONCLUSION: The testicular vein presents numeric variations and also variations in its local of termination. In approximately 30% of the cases, there are collaterals that communicate the testicular vein with retroperitoneal veins. These anatomic findings can help understanding the origin of varicocele and its recurrence after surgical interventions.

  20. The study of multi-detector CT on the grouping and measuring of the hepatic veins

    International Nuclear Information System (INIS)

    Wang Xianliang; Dong Guang; Geng Hai; Wang Wengang; Li Linkun; Gao Wei; Wang Rongfang

    2007-01-01

    Objective: To study the three-dimensional topography of the hepatic vein (HV), the inferior vena cava(IVC) and the inferior right hepatic vein(IRHV) in the retrohepatic and pre-IVC tunnel in human beings, and to provide an anatomic reference for liver surgery. Methods: One hundred and ten volunteers underwent CT scanning at 60 to 75 s after injection of contrast medium, and their HV, IVC and IRHV were reconstructed into MPR and 3D-MIP images. The hepatic veins were grouped according to the way by which the hepatic vein enters IVC. The angle between the right hepatic vein and the middle hepatic vein or the trunk of hepatic vein was measured, and the width from right hepatic vein to middle hepatic vein or to the trunk of hepatic vein on IVC was recorded. The frequency of IRHV was observed, and the length of the tunnel was measured. Results: Among the 110 volunteers, there were 6 cases (5.45%) with three hepatic veins respectively entering IVC, 98 cases (89.10%) with right hepatic vein and a common trunk of the middle hepatic vein and the left hepatic vein entering IVC, and 6 cases (5.45%) with left hepatic vein and a common trunk of the right hepatic vein and the middle hepatic vein entering IVC. The mean value of the angles between the right hepatic vein and the middle hepatic vein or the mink of hepatic vein was (55 ± 18) degree. The width from the right hepatic vein to the middle hepatic vein or to the trunk of hepatic vein was (21 ± 7)mm. The IRHV was observed in 30 cases(27.27%). The mean value of the tunnel length was (53 ± 11) mm. Conclusion: The parameters of the retrohepatic and pre-IVC tunnel in human beings can be measured accurately by the imaging of MPR, which can provide an anatomic reference for the liver surgery. (authors)

  1. Self-taught axillary vein access without venography for pacemaker implantation: prospective randomized comparison with the cephalic vein access.

    Science.gov (United States)

    Squara, Fabien; Tomi, Julien; Scarlatti, Didier; Theodore, Guillaume; Moceri, Pamela; Ferrari, Emile

    2017-12-01

    Axillary vein access for pacemaker implantation is uncommon in many centres because of the lack of training in this technique. We assessed whether the introduction of the axillary vein technique was safe and efficient as compared with cephalic vein access, in a centre where no operators had any previous experience in axillary vein puncture. Patients undergoing pacemaker implantation were randomized to axillary or cephalic vein access. All three operators had no experience nor training in axillary vein puncture, and self-learned the technique by reading a published review. Axillary vein puncture was fluoroscopy-guided without contrast venography. Cephalic access was performed by dissection of delto-pectoral groove. Venous access success, venous access duration (from skin incision to guidewire or lead in superior vena cava), procedure duration, X-ray exposure, and peri-procedural (1 month) complications were recorded. results We randomized 74 consecutive patients to axillary (n = 37) or cephalic vein access (n = 37). Axillary vein was successfully accessed in 30/37 (81.1%) patients vs. 28/37 (75.7%) of cephalic veins (P = 0.57). Venous access time was shorter in axillary group than in cephalic group [5.7 (4.4-8.3) vs. 12.2 (10.5-14.8) min, P < 0.001], as well as procedure duration [34.8 (30.6-38.4) vs. 42.0 (39.1-46.6) min, P = 0.043]. X-ray exposure and peri-procedural overall complications were comparable in both groups. Axillary puncture was safe and faster than cephalic access even for the five first procedures performed by each operator. Self-taught axillary vein puncture for pacemaker implantation seems immediately safe and faster than cephalic vein access, when performed by electrophysiologists trained to pacemaker implantation but not to axillary vein puncture. Published on behalf of the European Society of Cardiology. All rights reserved. © The Author 2017. For Permissions, please email: journals.permissions@oup.com.

  2. Deep vein thrombosis as a paraneoplastic syndrome

    Directory of Open Access Journals (Sweden)

    Klačar Marija

    2014-01-01

    Full Text Available Introduction: Several conditions represent the risk factor for deep vein thrombosis (DVT but sometimes it occurs with no apparent reason. DVT usually involve lower extremities. It can be a component of paraneoplastic syndrome, and occasionally it is the first manifestation of malignancy. Case report: Fifty-five years old male reported to his general practitioner with history of painless right leg swelling of three weeks duration. He denied leg trauma or any other hardship. The patient had a long history of hypertension and took his medications irregularly. Family history was positive for cardiovascular diseases but negative for metabolic diseases or malignancies. He was a smoker and physically active. Physical examination revealed right calf swelling without skin discoloration, distention of superficial veins or trophic changes. Pulses of magistral arteries of the leg were symmetrical, Homans' sign was positive on the right leg. The rest of the physical examination was normal, except for the blood pressure. He was referred to vascular surgeon with the clinical diagnosis of femoro- popliteal phlebothrombosis of the right leg. Vascular surgeon performed the Color duplex scan of the lower extremities which confirmed the diagnosis. The patient was treated with low-molecular-weight heparin. The swelling significantly subsided after two weeks of therapy, but then patient fell and fractured left ramus of ischial bone. X-ray examination of pelvis revealed both fracture line and osteoblastic deposits in pelvis and the fracture was pronounced pathological. In order to localize the primary tumor, subsequent tests included chest X-ray, abdominal and pelvic ultrasound and digitorectal examination of prostate were performed. The results of all of the above mentioned examinations were within normal ranges, including routine blood tests. Skeletal scintigraphy revealed multiple secondary deposits in pelvic bones, vertebral column and ribs. Tumor markers' values

  3. CT imaging of collaterals in stenoses of large mediastinal veins

    International Nuclear Information System (INIS)

    Goerich, J.; Flentje, M.; Gueckel, F.; Beyer-Enke, S.A.; Kaick, G. van; Heidelberg Univ.

    1988-01-01

    Scans of angio-computed tomography (CT) of 53 patients suffering from mediastinal space-occupying growths were reviewed: 16 patients showed stenosis of mediastinal veins with demonstration of subcutaneous venous channels, 17 showed an obstruction without collateral pathways and 20 patients had normal mediastinal vessels. Two thirds of the cases with external vein compression were caused by bronchogenic carcinoma. The degree of obstruction in patients showing collateral circulation was between 70 and 100 percent and significantly greater than in patients without collaterals (40%). The most important collaterals bypassing the upper mediastinal veins are discussed. (orig.) [de

  4. Bilateral retinal vein occlusion and rubeosis irides: lessons to learn.

    Science.gov (United States)

    Md Noh, Umi Kalthum; Ahem, Amin; Mustapha, Mushawiahti

    2013-01-01

    Uncontrolled hypertension is well- known to give rise to systemic complications involving multiple central organs. Artherosclerosis leads to damage of the retinal vessels wall, contributing to venous stasis, thrombosis and finally, occlusion. Retinal vein occlusions compromise vision through development of ischaemic maculopathy, macular oedema, and rubeotic glaucoma. Laser photocoagulation remains the definitive treatment for ischaemic vein occlusion with secondary neovascularization. Timely treatment with anti- vascular endothelial growth factor prevents development of rubeotic glaucoma. We hereby report an unusual case of bilateral retinal vein occlusion complicated by rubeosis irides, which was successfully managed to improve vision and prevent rubeotic glaucoma.

  5. 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.

  6. Gd-DTPA-enhanced MR venography for varicose veins of the calf

    International Nuclear Information System (INIS)

    Kohata, Yoshiko; Naito, Akira; Ito, Katuhide.

    1995-01-01

    2D time-of-flight MR venography (2D TOF MRV) was performed in 16 patients (25 calves) with varicose veins and 2 volunteers (4 calves), and compared with venography. Sequential SPGR (TR/TE/FA=45 ms/7 ms/60deg) transverse images and/or GRASS (TR/TE/FA=100 ms/13 ms/60deg) transverse images were obtained for MRV. Superior presaturation pulse (S-SAT) was placed in 21 calves, and 0.05 mmol/kg Gd-DTPA was used in all calves. Projection MRVs were generated with maximum intensity projection (MIP) reconstruction. Regarding sequence parameter, S-SAT was useful to eliminate signal from artery that would obscure the signal of deep veins. The detectability of deep veins was improved with the use of S-SAT. In the comparison with venography, MRV could more clearly demonstrate varicose veins more than 5 mm in diameter and their drainage veins than venography. But it could not so clearly demonstrate deep veins as venography. It could not detect fine varicose veins less than 5 mm in diameter and connecting veins with valve insufficiency. In the examination of varicose veins, detection of deep veins, large varicose veins and their main drainage veins is clinically important, because diagnosis of patency of deep veins and dilatation of the drainage veins is necessary to choose the treatment, concluding conservative therapy, stripping and sclerotherapy. However, detection of fine varicose veins and connecting veins are not so important because those veins seldom need treatment. MRV was not so suitable for detection of deep veins, but very useful for detection of varicose veins more than 5 mm in diameter and their main drainage veins. In conclusion, MRV is non-invasive and effective method in varicose veins of calf, and it can take the place of venography with the improvement of deep vein detectability. (author)

  7. Recurrence of pulmonary vein conduction and atrial fibrillation after pulmonary vein isolation for atrial fibrillation

    DEFF Research Database (Denmark)

    Nilsson, Brian; Chen, Xu; Pehrson, Steen

    2006-01-01

    BACKGROUND: Both segmental ostial and circumferential extraostial pulmonary vein (PV) isolation have been proven effective in the treatment of atrial fibrillation (AF). However, the recurrence of AF and PV conduction after the 2 ablation strategies has never been compared in a randomized study...... isolation. Extraostial PV isolation was performed by encircling the paired left and right PVs, respectively, guided by an electroanatomic mapping system. RESULTS: A total of 84% of the patients had recurrent AF after the first PV isolation procedure, showing 72% with AF and 12% with organized left atrial...

  8. Percutaneous transhepatic portal vein stenting in a patient with benign non-transplant postoperative portal vein stenosis: A case report

    Directory of Open Access Journals (Sweden)

    KS Madhusudhan

    2013-01-01

    Full Text Available Extrahepatic portal vein stenosis is caused by a variety of benign and malignant diseases and results in development of symptoms due to portal hypertension. Benign post-surgical adhesions causing portal vein stenosis in non-transplant population is an uncommon etiology of portal hypertension. Endovascular treatment of such patients with angioplasty and stenting is uncommonly reported in literature. We report a case of portal hypertension caused by benign postoperative portal vein fibrosis, successfully treated by self-expandable metallic stent.

  9. Ovarian vein thrombosis – a rare but important complication of ...

    African Journals Online (AJOL)

    This case study highlights the clinical importance of ovarian vein thrombosis in the context of pelvic surgery for benign gynaecological conditions and the role of imaging, particularly computed tomography with reformatting, in confirming the diagnosis.

  10. Primary extraskeletal mesenchymal chondrosarcoma arising from the iliac vein

    Directory of Open Access Journals (Sweden)

    Hua Zhang

    2017-10-01

    Full Text Available The iliac vein is an extremely rare site for mesenchymal chondrosarcoma, and patients with primary extraskeletal mesenchymal chondrosarcoma arising from a vein always suffer a very poor prognosis. We report a case of a 45-year-old female who presented with a 5-month history of left leg edema in 2015. Contrast-enhanced computed tomography showed a large mass in the left iliac vein with scattered calcifications. Wide-margin resection was performed, and histopathologic and immunohistochemical analyses confirmed the presence of intraluminal mesenchymal chondrosarcoma with local invasion out of the vein wall. Due to poor patient compliance, postoperative neoadjuvant chemotherapy and radiotherapy were not started, and a bone scan performed 16 weeks postoperatively showed multiple bone metastases. The patient died on the twenty-fourth postoperative week.

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

    International Nuclear Information System (INIS)

    Siegal, Daniel S.; Wu, Jim S.; Brennan, Darren D.; Hochman, Mary G.; Challies, Tracy

    2008-01-01

    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.)

  12. Geology of uranium vein-deposits in France

    International Nuclear Information System (INIS)

    Sarcia, J.A.; Carrat, J.; Poughon, A.; Sanselme, H.

    1958-01-01

    This paper gives an outline of the characteristics of the main uranium vein deposits in France; it underlines the structural, petrographic and metallogenic similarities of these deposits. (author) [fr

  13. 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.)

  14. Finger Vein Recognition Based on Local Directional Code

    Science.gov (United States)

    Meng, Xianjing; Yang, Gongping; Yin, Yilong; Xiao, Rongyang

    2012-01-01

    Finger vein patterns are considered as one of the most promising biometric authentication methods for its security and convenience. Most of the current available finger vein recognition methods utilize features from a segmented blood vessel network. As an improperly segmented network may degrade the recognition accuracy, binary pattern based methods are proposed, such as Local Binary Pattern (LBP), Local Derivative Pattern (LDP) and Local Line Binary Pattern (LLBP). However, the rich directional information hidden in the finger vein pattern has not been fully exploited by the existing local patterns. Inspired by the Webber Local Descriptor (WLD), this paper represents a new direction based local descriptor called Local Directional Code (LDC) and applies it to finger vein recognition. In LDC, the local gradient orientation information is coded as an octonary decimal number. Experimental results show that the proposed method using LDC achieves better performance than methods using LLBP. PMID:23202194

  15. 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

  16. Finger Vein Recognition Based on Local Directional Code

    Directory of Open Access Journals (Sweden)

    Rongyang Xiao

    2012-11-01

    Full Text Available Finger vein patterns are considered as one of the most promising biometric authentication methods for its security and convenience. Most of the current available finger vein recognition methods utilize features from a segmented blood vessel network. As an improperly segmented network may degrade the recognition accuracy, binary pattern based methods are proposed, such as Local Binary Pattern (LBP, Local Derivative Pattern (LDP and Local Line Binary Pattern (LLBP. However, the rich directional information hidden in the finger vein pattern has not been fully exploited by the existing local patterns. Inspired by the Webber Local Descriptor (WLD, this paper represents a new direction based local descriptor called Local Directional Code (LDC and applies it to finger vein recognition. In LDC, the local gradient orientation information is coded as an octonary decimal number. Experimental results show that the proposed method using LDC achieves better performance than methods using LLBP.

  17. Stent Recanalization of Chronic Portal Vein Occlusion in a Child

    International Nuclear Information System (INIS)

    Cwikiel, Wojciech; Solvig, Jan; Schroder, Henrik

    2000-01-01

    An 8-year-old boy with a 21/2 year history of portal hypertension and repeated bleedings from esophageal varices, was referred for treatment. The 3.5-cm-long occlusion of the portal vein was passed and the channel created was stabilized with a balloon-expandable stent; a portosystemic stent-shunt was also created. The portosystemic shunt closed spontaneously within 1 month, while the recanalized segment of the portal vein remained open. The pressure gradient between the intrahepatic and extrahepatic portal vein branches dropped from 17 mmHg to 0 mmHg. The pressure in the portal vein dropped from 30 mmHg to 17 mmHg and the bleedings stopped. The next dilation of the stent was performed 12 months later due to an increased pressure gradient; the gastroesophageal varices disappeared completely. Further dilation of the stent was planned after 2, 4, and 6 years

  18. Geology and geochemistry of giant quartz veins from the ...

    Indian Academy of Sciences (India)

    Numerous younger thin quartz veins with somewhat similar orientation cut across the giant quartz .... Angular fragments of quartz are set in ... places along grain boundaries. ... Oxide values are in wt%, and trace element concentrations are.

  19. Management Strategy for Patients With Chronic Subclavian Vein Thrombosis.

    Science.gov (United States)

    Keir, Graham; Marshall, M Blair

    2017-02-01

    We performed a systematic review to determine best practice for the management of patients with chronic or subacute subclavian vein thrombosis. This condition is best managed with surgical excision of the first rib followed by long-term anticoagulation. Interventional techniques aimed at restoring patency are ineffective beyond 2 weeks postthrombosis. Additional therapeutic options should be made based on the severity of symptoms as well as vein status. Patients with milder symptoms are given decompression surgery followed by anticoagulation whereas patients with more severe symptoms are considered for either a jugular vein transposition or saphenous patch based on the vein characteristics. Copyright © 2017 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.

  20. 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.

  1. 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...

  2. Ultrasonography of the lower extremity veins: Anatomy and basic approach

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Dong Kyu; Ahn, Kyung Sik; Kang, Chang Ho; Cho, Sung Bum [Dept. of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul (Korea, Republic of)

    2017-04-15

    Ultrasonography is an imaging modality widely used to evaluate venous diseases of the lower extremities. It is important to understand the normal venous anatomy of the lower extremities, which has deep, superficial, and perforating venous components, in order to determine the pathophysiology of venous disease. This review provides a basic description of the anatomy of the lower extremity veins and useful techniques for approaching each vein via ultrasonography.

  3. 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.

  4. An unusual presentation of postpartum ovarian vein thrombosis

    International Nuclear Information System (INIS)

    Hakim, Fayaz A.; Khan, Nadra N.; Qushmaq, Khalid A.; Al-Shami, Sadiq Y.

    2007-01-01

    Ovarian vein thrombosis is a rare but potentially serious complication following childbirth. The majority of patients present during the first week postpartum, with fever and right lower quadrant abdominal pain. We report an unusual case of postpartum ovarian vein thrombosis who presented with fever, low backache, and painful thighs. A high index of suspicion is crucial to diagnose and treat this condition in order to avoid serious consequences. (author)

  5. [Ultrasound examination for lower extremity deep vein thrombosis].

    Science.gov (United States)

    Toyota, Kosaku

    2014-09-01

    Surgery is known to be a major risk factor of vein thrombosis. Progression from lower extremity deep vein thrombosis (DVT) to pulmonary embolism can lead to catastrophic outcome, although the incidence ratio is low. The ability to rule in or rule out DVT is becoming essential for anesthesiologists. Non-invasive technique of ultrasonography is a sensitive and specific tool for the assessment of lower extremity DVT. This article introduces the basics and practical methods of ultrasound examination for lower extremity DVT.

  6. Adult adrenal haemorrhage: an unrecognised complication of renal vein thrombosis

    Energy Technology Data Exchange (ETDEWEB)

    Loke, T.K.L. E-mail: lokekl@ha.org.hk

    2001-07-01

    There are many predisposing factors for neonatal adrenal haemorrhage but the causative factors are different in adults. Several cases of neonatal adrenal haemorrhage have been reported in association with renal vein thrombosis. This complication has not been documented in the adults. The presence of an adrenal mass in the setting of renal vein thrombosis should raise the possibility of adrenal haemorrhage even though this is extremely uncommon in adults.

  7. Congenital vascular malformations: the persistence of marginal and embryonal veins.

    Science.gov (United States)

    Weber, J; Daffinger, N

    2006-05-01

    In about 18% of cases with conginental vascular malformations we find a perspective of an atypical truncular vein, located along the outside of the leg, frequently extended from the dorsal foot up to the bottom. In presence of a normally developed system of the deep collecting veins of the lower limb and within the pelvic outflow we are talking about a persisting marginal vein (MV). Hypoplasia or even aplasia of the main deep veins in contrary defines the persisting embryonal vein (EV). Already in childhood these truncular dysplastic veins tend to develop varicose enlargement, causing severe reflux of a huge volume of blood--even more when being associated with av-fistulas (46%). In consequence a rapidly growing chronic venous insufficiency will guide to additional injuries. We have analysed 97 patients showing a persisting MV (n: 92 ) within a total of 102 legs. A persistent embryonal vein (EV) was seen 10 times within this clientel. The persisting truncular veins, associated with phlebectasias and typical clinical symptoms have been examined in a diagnostic "step-by-step" procedure, mainly phlebographically (ascending leg phlebography and varicography), including direct venous blood pressure measurements (phlebodynamometry) and--if needed--by arteriography, showing av-shunting fistulae in 46% of cases. CT and MRI were consulted for the exact therapy planing (frequently initially offered as a non-invasive, however, inadequate key of diagnostic). Actually now these techniques cannot replace pre-operatively the angiographic imaging techniques. The analysis of clinical, morphologic and functional signs, guiding to a specific therapy-relevant classification of MV's and EV's will be presented. And a specific strategy of surgical repair, interventional treatment of av-fistulas and conservative compressive follow-up treatment attempting palliative recompensation of the diseased venous outflow will be discussed also.

  8. Ultrasonography of the lower extremity veins: Anatomy and basic approach

    International Nuclear Information System (INIS)

    Lee, Dong Kyu; Ahn, Kyung Sik; Kang, Chang Ho; Cho, Sung Bum

    2017-01-01

    Ultrasonography is an imaging modality widely used to evaluate venous diseases of the lower extremities. It is important to understand the normal venous anatomy of the lower extremities, which has deep, superficial, and perforating venous components, in order to determine the pathophysiology of venous disease. This review provides a basic description of the anatomy of the lower extremity veins and useful techniques for approaching each vein via ultrasonography

  9. CO2-DSA in lower extremity veins: a clinical application

    International Nuclear Information System (INIS)

    Guo Jinhe; Teng Gaojun; Zhu Guangyu; Liu Zhensheng; Li Guozhao; Ding Huijuan; Shen Zhiping; He Shicheng; Deng Gang; Fang Wen

    2005-01-01

    Objective: To explore the feasibility and usefulness of carbon dioxide digital subtraction angiography (CO 2 -DSA) in deep veins of lower extremity via the dorsal is pedis vein. Methods: CO 2 -DSA in lower extremity veins was performed in 15 patients (15 limbs affected, male 9, female 6) by injection of CO 2 via the dorsal is pedis vein. Among them, 8 patients were suspected with deep venous thrombosis (DVT), 6 patients with saphena magna dilation, and 1 patient with a follow-up after thrombolysis due to DVT. Results: Excellent image was obtained in 12 cases, which showed branches of the venous system clearly, as well as the details of DVT. Good image was obtained in 2 cases. Technical failure was encountered in one patient due to inaccessible puncture veins. Mild discomfort (transient pain at the percutaneous site) during the procedure was demonstrated in 11 patients. There was no severe side effects or complications in this series. Conclusion: CO 2 -DSA in lower extremity veins is feasible and safe, the preliminary result is satisfactory. (authors)

  10. Varicography in the preoperative evaluation of primary varicose veins

    International Nuclear Information System (INIS)

    Pinzani, A.; Paoli, G.; Gongolo, A.; Spreafico, G.

    1989-01-01

    Primary varicose veins in the lower limb are usually well evaluated by the surgeon, who avails himself of tornequet tests and Doppler US. However, the operation is often followed by failure or recurrence, or else it requires ugly skin dissection to eradicate an unforeseeably complicated varicose vein. The authors suggest that, whenever the surgeon considers the information obtained with tests and Doppler US inadequate for planning surgery, varicography be performed to get further morphological (and functional) data about the origin of varicose veins, which is of fundamental importance for an accurate surgical planning (crossectomy, stripping, ligation, sclerosis). Out of 100 varicographies consecutively carried out on patients in whom clinical examination was not conclusive, 62% allowed an already planned surgical approach to be changed. The figure rose to 100% in the case of unusual varicose veins. Such a results allowed the needs of both the surgeon (selectivity, effectiveness, radicality) and the patients (narrow scars, absence of relapse) to be respected. Furthermore, it has been pointed out that some vein segments are often only pathological, and they are to be adequately treated, while others can be undamaged, and they are to be preserved for both their function and an eventual by-pass surgery. Varicography is rapidly performed, without complication, and is well accepted by the patients. It is a fundamental help in the preoperative study of primary varicose veins, especially in case of unusual ones, whenever the surgeon is in the slightest diagnostic - and therefore surgical - doubt

  11. 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.

  12. Robust Finger Vein ROI Localization Based on Flexible Segmentation

    Directory of Open Access Journals (Sweden)

    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.

  13. 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

    2013-01-01

    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. PMID:24284769

  14. [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. Copyright © 2014 Elsevier España, S.L. All rights reserved.

  15. Rare malposition following left jugular vein catheterization: Case reports and a literature review.

    Science.gov (United States)

    Wang, Lin; Liu, Zhangsuo; Wang, Changan; Liu, Dongwei; Yuan, Yiqiang

    2015-01-01

    The number of patients requiring chronic hemodialysis via a tunneled cuffed catheter is increasing. The right internal jugular vein (IJV) is generally the preferred site of percutaneous insertion. In certain situations, for example, in patients with a history of multiple access failures, catheterization of the left IJV is an important option. In this report, we present two rare cases of catheter malposition after left IJV catheterization; catheter adjustments, with the help of chest radiographs, resulted in a positive outcome in both cases. These cases exemplify the difficulties associated with left IJV catheterization, of which there are few reports in the published literature.

  16. Delayed Migration and Perforation of the Jugular Vein by a Peripherally Inserted Central Catheter

    Directory of Open Access Journals (Sweden)

    Joshua J. Oliver

    2017-10-01

    Full Text Available We report a case of peripherally inserted central catheter (PICC migration and perforation of the left internal jugular vein in a home health setting in an 80-year-old female. A left sided PICC was placed for treatment of diverticulitis following hospital discharge. She complained of sudden onset left sided neck pain immediately after starting an infusion of vancomycin. In the emergency department the injury was identified by portable chest radiograph and computed tomography of her neck. Following removal of the line, she had an uneventful course. Emergency physicians should be aware of this possible PICC line complication.

  17. Understanding organic nitrates – a vein hope?

    Science.gov (United States)

    Miller, Mark R; Wadsworth, Roger M

    2009-01-01

    The organic nitrate drugs, such as glyceryl trinitrate (GTN; nitroglycerin), are clinically effective in angina because of their dilator profile in veins and arteries. The exact mechanism of intracellular delivery of nitric oxide (NO), or another NO-containing species, from these compounds is not understood. However, mitochondrial aldehyde dehydrogenase (mtALDH) has recently been identified as an organic nitrate bioactivation enzyme. Nitrate tolerance, the loss of effect of organic nitrates over time, is caused by reduced bioactivation and/or generation of NO-scavenging oxygen-free radicals. In a recent issue of the British Journal of Pharmacology, Wenzl et al. show that guinea-pigs, deficient in ascorbate, also have impaired responsiveness to GTN, but nitrate tolerance was not due to ascorbate deficiency that exhibited divergent changes in mtALDH activity. Thus, the complex function of mtALDH appears to be the key to activation of GTN, the active NO species formed and the induction of tolerance that can limit clinical effectiveness of organic nitrate drugs. British Journal of Pharmacology (2009) 157, 565–567; doi:10.1111/j.1476-5381.2009.00193.x This article is part of a themed section on Endothelium in Pharmacology. For a list of all articles in this section see the end of this paper, or visit: http://www3.interscience.wiley.com/journal/121548564/issueyear?year=2009 The paper by Wenzl et al. is available from http://www3.interscience.wiley.com/cgi-bin/fulltext/122221718/PDFSTART PMID:19630835

  18. 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.

  19. Identifikasi Pepper vein yellows virus yang Berasosiasi dengan Penyakit Yellow Vein Banding pada Tanaman Mentimun di Bali

    Directory of Open Access Journals (Sweden)

    I Dewa Nyoman Nyana

    2016-11-01

    Full Text Available Yellowing vein banding disease has been reported infecting cucurbit plants in Bali since 2014. Similar vein banding symptom on chilli pepper was observed previously, and early diagnosis indicated infection of Polerovirus. The objective of this research was to confirm the presence of Polerovirus infection on cucumber plant showing yellow vein banding symptom in Bali. Reverse transcription polymerase chain reaction – based detection method was conducted using specific primer pairs PeVYV-CP-F-BamH1/ PeVYV-CP-R-Pst1followed by sequencing and nucleotide sequence analysis.  Specific DNA fragments of ± 650 bp was successfully amplified from field samples.  Nucleotide sequence analysis showed that the sequence has the highest similarity > 95% with Pepper vein yellow virus (PeVYV infecting chili pepper from Indonesia (Bali, and Rembang, Japan, and Greece.

  20. [Routine screening of splenic or portal vein thrombosis after splenectomy].

    Science.gov (United States)

    Bouvier, A; Gout, M; Audia, S; Chalumeau, C; Rat, P; Deballon, O

    2017-01-01

    Portal and/or splenic vein thrombosis (PSVT) is common after splenectomy. It can be a life-threatening complication, with a risk of bowel ischemia and portal hypertension. An early diagnosis allows an effective medical treatment and prevents life-threatening complications. There is no consensus regarding the benefit of systematic screening of patients after splenectomy for PSVT. We started in January 2012 a routine screening of PSVT after elective splenectomy. The aim of this study was to assess this policy. Since January 2012, all patients undergoing an elective splenectomy had an abdominal CT-scan on postoperative-day 7. Demographic data, pathology, type of surgery, platelet counts before and after surgery, outcome, results of medical imaging, and management of PSVT and its results were recorded. Over 3 years, 52 patients underwent an elective splenectomy. All of them had a CT-scan at postoperative-day 7. A PSVT was found in 11 patients (21.2 %). They were all asymptomatic. Lymphoma and splenomegaly were the main factors associated with PSVT in the univariate analysis. All patients with PSVT were treated with anticoagulation and no complication of PSVT occurred. The follow-up CT confirmed the efficacy of anticoagulation therapy in all patients. Routine screening of PSVT after elective splenectomy is warranted because it allows to start anticoagulant therapy and avoid further life-threatening complications. The incidence of PSVT is particularly high among patients operated on for lymphoma or with splenomegaly. Copyright © 2016 Société Nationale Française de Médecine Interne (SNFMI). Published by Elsevier SAS. All rights reserved.

  1. Dual Balloon-Occluded Retrograde Transvenous Obliteration of Gastric Varix Draining into the Left Adrenal Vein and Left Inferior Phrenic Vein

    International Nuclear Information System (INIS)

    Nishida, Norifumi; Ninoi, Teruhisa; Kitayama, Toshiaki; Yamamoto, Akira; Sakai, Yukimasa; Sato, Kimihiko; Hamuro, Masao; Nakamura, Kenji; Inoue, Yuichi; Yamada, Ryusaku

    2004-01-01

    A 66-year-old woman with a gastric varix, draining into a dilated left adrenal vein and a left inferior phrenic vein, was treated with dual balloon-occluded retrograde transvenous obliteration (B-RTO). Under balloon occlusion of the left adrenal vein and the left inferior phrenic vein, retrograde injection of a sclerosant (5% ethanolamine oleate) into the gastric varix was performed. Two weeks later, disappearance of flow in the gastric varix was confirmed on endoscopic ultrasound examination

  2. Management of Post-Traumatic Phlegmasia Cerulea Dolens via Right-to-Left Femoral Vein to Femoral Vein Bypass (Palma Procedure).

    Science.gov (United States)

    Dua, Anahita; Heller, Jennifer; Lee, Cheong

    2017-11-01

    Phlegmasia cerulea dolens (PCD) is a rare condition resulting from venous occlusion that impairs arterial flow. We report a rare case of post-traumatic PCD after ligation of the iliac vein with successful treatment by right-to-left femoral vein to femoral vein bypass using left great saphenous vein (Palma procedure). The clinical presentation, diagnostic process, and approach to management along with a literature review on the operative management of PCD are presented in this case report.

  3. Efeito da adição de cloreto de cálcio sobre a qualidade espermática e atividade da aspartato amino transferase no sêmen resfriado de suíno Effect of adding calcium chloride on the spermatic quality and aminotransferase aspartate in cool swine semen

    Directory of Open Access Journals (Sweden)

    Fernanda Pinheiro Lima

    2007-10-01

    Full Text Available O experimento foi realizado com o objetivo de testar dois processos de resfriamento de sêmen suíno, analisar o efeito da adição de CaCl2 ao diluidor BTS e testar o método de avaliação do perfil enzimático da Aspartato Aminotransferase (AAT sobre a qualidade espermática. Foram utilizados 12 ejaculados suínos de animais procedentes do setor de Suinocultura - DZO/UFLA. Estes ejaculados foram diluídos e receberam diferentes concentrações de CaCl2 (A: 0,0; B: 2,5; C: 5,0 e D: 7,5 mM. As amostras dos ejaculados foram submetidas a três processos de resfriamento (1: convencional - 15º C ; 2: lento - 15º C/5º C; 3: rápido - 5º C, sendo que cada ejaculado ficou armazenado por um período de 72 horas para avaliações da qualidade espermática, constituindo os tratamentos experimentais. Os parâmetros seminais avaliados foram motilidade e vigor espermáticos e perfil enzimático da AAT. Houve diferença significativa (P0,05. Conclui-se que a adição de CaCl2 melhora a motilidade espermática das amostras dos ejaculados suínos e que o processo de resfriamento lento substitui o processo convencional sem afetar a qualidade espermática do sêmen submetido à refrigeração. A avaliação da AAT não é válida para sêmen resfriado.The study was carried out with objective to test two swine semen cooling processes and verify the effects of adding chloride of calcium (CaCl2 on semen dilutor BTS and also to test the evaluation method of Aspartate Aminotransferase (AAT enzymatic profile on the cooled swine semen spermatic quality. Were used twelve samples of ejaculation of breeders supplied by the Swine Breeding section at the DZO/UFLA. The samples were diluted and received different concentrations of CaCl2 (A: 0.0; B: 2.5; C 5.0; D 7.5mM. The samples of ejaculation were submitted to three processes of cooling: 1 - standard cooling (15º C; 2 - slow cooling (15º C/ 5º C; 3 - fast cooling (5º C, and each sample of ejaculation was stored for

  4. Sarpogrelate hydrochloride reduced intimal hyperplasia in experimental rabbit vein graft.

    Science.gov (United States)

    Kodama, Akio; Komori, Kimihiro; Hattori, Keisuke; Yamanouchi, Dai; Kajikuri, Junko; Itoh, Takeo

    2009-05-01

    The selective 5-HT(2A) receptor antagonist sarpogrelate has been clinically used for treatment in atherosclerotic diseases. However, it remains unknown whether administration of sarpogrelate inhibits intimal hyperplasia seen in autologous vein grafts. Therefore, we sought to clarify this question using an experimental rabbit vein graft model. Male rabbits were divided into two groups: a control group and a sarpogrelate-treated group. The jugular vein was interposed in the carotid artery in reversed fashion for 4 weeks and intimal hyperplasia of the grafted vein was measured (n = 8, in each group). Acetylcholine (ACh)-induced endothelium-dependent relaxation was tested by precontraction with prostaglandin F(2alpha) (PGF(2alpha), 5 muM) (n = 5, in each). endothelial nitric oxide synthase (eNOS) protein expression and superoxide production of these veins were also assessed. The suppression of intimal hyperplasia was significantly greater in the sarpogrelate-treated group than in the control group. ACh induced an endothelium-dependent relaxation in the sarpogrelate-treated group (but not in the control group). In endothelium-intact strips from the sarpogrelate-treated group, the nitric oxide (NO) synthase inhibitor nitroarginine enhanced the PGF(2alpha)-induced contraction and blocked the ACh-induced relaxation. Immunoreactive eNOS protein expression was similar between the two groups but superoxide production (estimated from ethidium fluorescence) in endothelial cells was significantly smaller in the sarpogrelate-treated group. The present results indicate that in vivo blockade of 5-HT(2A) receptors leads to an inhibition of intimal hyperplasia in rabbit vein graft. It is suggested that an increased function of endothelium-derived NO through a reduction in endothelial superoxide production may be a possible underlying mechanism for this. These novel findings support the clinical usefulness of sarpogrelate for preventing intimal hyperplasia in vein graft after bypass

  5. Ergonomic varicocele ligation: Laparoscopic intracorporeal knot-tying

    African Journals Online (AJOL)

    All patients were diagnosed through physical examination and color Doppler ultrasound, which measured the diameter of spermatic veins and retrograde flow in spermatic veins after the Valsalva maneuver. Results The mean operative time was 35± 8 min. There was no intraoperative complication, and all patients had ...

  6. Transcatheter ovarian vein embolization for pelvic congestion syndrome: short-term outcome

    Energy Technology Data Exchange (ETDEWEB)

    Park, Ji Seon; Oh, Joo Hyeong; Yoon, Yup; Huh, Joo Yup [College of Medicine, Kyunghee Univ., Seoul (Korea, Republic of); Jeong, Yu Mee [College of Medicine, Dongguk Univ., Seoul (Korea, Republic of)

    2002-04-01

    To evaluate the short-term therapeutic effectiveness of ovarian vein embolization using coils for pelvic congestion syndrome (PCS), a common cause of chronic pelvic pain, and to determine patient satisfaction. Forty-four multiparous women aged 26-73 (mean, 39.9) years in whom chronic pelvic pain due to unknown causes had lasted for more than six months, and whose gynecologic findings and laboratory data suggested PCS, underwent transabdominal or transvaginal ultrasonography and selective ovarian venography. PSC was finally diagnosed in 21 of th 44, who underwent 22 ovarian vein embolizations (in one case, bilaterally). The simple pain rating system was used at admission, with a 'minimal' or 'moderate' grade representing discomfort in daily life, and 'severe; indicating the need for medication. Indications for coil embolization included dilatation of the ovarian vein to a diameter of more than 6 mm, reflux involving an incompetent valve, congestion of the pelvic venous plexus (involving the stasis of contrast media), and /or opacification of the ipsilateral internal iliac vein (or contralateral filling). Embolizations were undertaken using coils of optimal size and number, and the mean follow-up period was 217 (31-267) days. By means of a telephone questionnaire, the outcome was classified as a cure, pain reduction, or 'no change, or aggravation', and on the basis of whether or not they would opt for the same treatment, or recommend embolization to others, patient satisfaction was graded as 'substantial', 'moderate', or 'absent'. Venous occlusion was confirmed at postembolization venography in all 22 cases. Clinical treatment led to symptomatic relief in 76.2% of patients a cure in 33.3%(7/21), pain reduction in 42.9%(9/21) and no imchage, or aggravation, in 23.8%(5/21). Eighteen patients (85.5%) were very (9/21, 42.9%) or moderately (9/21, 42.9%) satisfied with coil embolization. In two, the coil

  7. Transcatheter ovarian vein embolization for pelvic congestion syndrome: short-term outcome

    International Nuclear Information System (INIS)

    Park, Ji Seon; Oh, Joo Hyeong; Yoon, Yup; Huh, Joo Yup; Jeong, Yu Mee

    2002-01-01

    To evaluate the short-term therapeutic effectiveness of ovarian vein embolization using coils for pelvic congestion syndrome (PCS), a common cause of chronic pelvic pain, and to determine patient satisfaction. Forty-four multiparous women aged 26-73 (mean, 39.9) years in whom chronic pelvic pain due to unknown causes had lasted for more than six months, and whose gynecologic findings and laboratory data suggested PCS, underwent transabdominal or transvaginal ultrasonography and selective ovarian venography. PSC was finally diagnosed in 21 of th 44, who underwent 22 ovarian vein embolizations (in one case, bilaterally). The simple pain rating system was used at admission, with a 'minimal' or 'moderate' grade representing discomfort in daily life, and 'severe; indicating the need for medication. Indications for coil embolization included dilatation of the ovarian vein to a diameter of more than 6 mm, reflux involving an incompetent valve, congestion of the pelvic venous plexus (involving the stasis of contrast media), and /or opacification of the ipsilateral internal iliac vein (or contralateral filling). Embolizations were undertaken using coils of optimal size and number, and the mean follow-up period was 217 (31-267) days. By means of a telephone questionnaire, the outcome was classified as a cure, pain reduction, or 'no change, or aggravation', and on the basis of whether or not they would opt for the same treatment, or recommend embolization to others, patient satisfaction was graded as 'substantial', 'moderate', or 'absent'. Venous occlusion was confirmed at postembolization venography in all 22 cases. Clinical treatment led to symptomatic relief in 76.2% of patients a cure in 33.3%(7/21), pain reduction in 42.9%(9/21) and no imchage, or aggravation, in 23.8%(5/21). Eighteen patients (85.5%) were very (9/21, 42.9%) or moderately (9/21, 42.9%) satisfied with coil embolization. In two, the coil migrated, and was successfully retrieved using a snare loop. In this

  8. The Anatomical Correlation between the Internal Venous Vertebral System and the Cranial Venae Cavae in Rabbit.

    Science.gov (United States)

    Mazensky, David; Petrovova, Eva; Danko, Jan

    2013-01-01

    The aim of this study was to describe the possible variations in the connection between the internal venous vertebral system and the cranial vena cava in rabbit using corrosion technique. The study was carried out on 40 adult New Zealand white rabbits. The venous system was injected by using Batson's corrosion casting kit number 17. We found the connection between the internal venous vertebral system and the cranial vena cava by means of the vertebral veins and the right azygos vein. The vertebral vein was present as independent tributary in 36 cases (90%). In the rest of the cases, it was found as being double, being triple, or forming a common trunk with other veins. The azygos vein was present as independent tributary of the cranial vena cava in 39 cases (97.5%). We found also a common trunk formed by the junction of the deep cervical vein, the right vertebral vein, and the azygos vein in one case (2.5%). The azygos vein received 6, 7, 8, or 9 pairs of dorsal intercostal veins. Documenting the anatomical variations in the rabbit will aid in the planning of future experimental studies and determining the clinical relevance on such studies.

  9. The Anatomical Correlation between the Internal Venous Vertebral System and the Cranial Venae Cavae in Rabbit

    Directory of Open Access Journals (Sweden)

    David Mazensky

    2013-01-01

    Full Text Available The aim of this study was to describe the possible variations in the connection between the internal venous vertebral system and the cranial vena cava in rabbit using corrosion technique. The study was carried out on 40 adult New Zealand white rabbits. The venous system was injected by using Batson's corrosion casting kit number 17. We found the connection between the internal venous vertebral system and the cranial vena cava by means of the vertebral veins and the right azygos vein. The vertebral vein was present as independent tributary in 36 cases (90%. In the rest of the cases, it was found as being double, being triple, or forming a common trunk with other veins. The azygos vein was present as independent tributary of the cranial vena cava in 39 cases (97.5%. We found also a common trunk formed by the junction of the deep cervical vein, the right vertebral vein, and the azygos vein in one case (2.5%. The azygos vein received 6, 7, 8, or 9 pairs of dorsal intercostal veins. Documenting the anatomical variations in the rabbit will aid in the planning of future experimental studies and determining the clinical relevance on such studies.

  10. Isolated Subclavian Vein Injury: A Rare and High Mortality Case

    Directory of Open Access Journals (Sweden)

    Sahin Iscan

    2013-01-01

    Full Text Available Isolated subclavian vein injuries are rarely seen without concomitant arterial injury, bone fracture, damage to brachial plexus, and thoracal traumas. Our case was brought to the emergency service 6 hours after he had been shot at the shoulder with a firearm. After detection of extravasation from the left axillary and subclavian vein on arteriographic and venographic examinations, he was operated on. An autogenous saphenous vein graft was interposed between subclavian and axillary veins. Cardiac arrest developed twice because of hypovolemia, which was resolved with medical therapy. Subclavian vein injuries have a more mortal course when compared with the injuries to the subclavian arteries. Its most important reason is excessive blood loss and air embolism because of delayed arrival to hospital. As is the case in all vascular injuries, angiography is the most important diagnostic examination. If the general health state of the patient permits, arteriography and venography should be performed in patients potentially exposed to vascular injuries. In patients with extreme blood loss and deteriorated health state, direct surgical exploration of the injury site, containment of the bleeding, and venous repair are life-saving approaches.

  11. Anatomic relationship of intrahepatic bile ducts to portal veins revisited

    International Nuclear Information System (INIS)

    Bret, P.M.; Stempel, J.; Atri, M.; Lough, J.O.; Illescas, F.F.

    1987-01-01

    It is well accepted that intrahepatic bile ducts lie in front of corresponding portal vein branches. Since the authors' clinical experience with US was different, they studied 18 normal necropsy cadaver livers. The common bile duct, main portal vein, and hepatic artery were cannulated and injected respectively with air, dilute contrast medium, and mineral oil. The livers were then examined in anatomic position with CT. In the left lobe of the liver, the bile ducts were anterior to the portal vein in seven cases, posterior in seven cases, and were tortuous both anterior and posterior in three cases. In the right lobe, the bile ducts were anterior in nine cases, posterior in five cases, tortuous in one case, and not seen in two cases. In the porta hepatis, the bile ducts were anterior in eight cases, posterior in one case, tortuous in five cases, and not seen in three cases. Histologic specimens confirmed the anterior and posterior location of the bile ducts relative to the portal veins. In conclusion, intrahepatic bile ducts can be either anterior or posterior to the corresponding portal vein branches

  12. Finger Vein Recognition Based on Personalized Weight Maps

    Science.gov (United States)

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

    2013-01-01

    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. PMID:24025556

  13. Finger Vein Recognition Based on Personalized Weight Maps

    Directory of Open Access Journals (Sweden)

    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.

  14. [Intraosseous veins of the maxilla in the newborn].

    Science.gov (United States)

    Bogdanov, R A

    1975-12-01

    The intraosseous veins of the maxilla in newborns grow larger with enlargement of the bone and become disposed in three mutually perpendicular planes. The venous plexus of the alveolar process is large. V. v. vallares are thin and interlace forming a network. The veins of interdental septum are well pronounced. The thick venous network of the periosteum and the mucous membrane of the nasal surface of the palatine process includes the vessels transversal and longitudinal to the nasal septum. The venous loops of the incisor part are of triangular, pentagonal and polygonal shape. The veins of the palatine process are connected with 3-4 large vessels falling into the vessels of the tear duct. The transversal and oblique veins of the oral surface of the palatine process are connected with large vessels disposed in parallel to the medial structure of the hard palate. The venous network of the incisor part of the bone is restricted by densified small arc-shaped plexuses. Two-three largest veins lie sagittally and, connected by arc-shaped anastomoses, are tributaries of the vessels of the palate bone, soft palate and pharynx.

  15. Palm vein recognition based on directional empirical mode decomposition

    Science.gov (United States)

    Lee, Jen-Chun; Chang, Chien-Ping; Chen, Wei-Kuei

    2014-04-01

    Directional empirical mode decomposition (DEMD) has recently been proposed to make empirical mode decomposition suitable for the processing of texture analysis. Using DEMD, samples are decomposed into a series of images, referred to as two-dimensional intrinsic mode functions (2-D IMFs), from finer to large scale. A DEMD-based 2 linear discriminant analysis (LDA) for palm vein recognition is proposed. The proposed method progresses through three steps: (i) a set of 2-D IMF features of various scale and orientation are extracted using DEMD, (ii) the 2LDA method is then applied to reduce the dimensionality of the feature space in both the row and column directions, and (iii) the nearest neighbor classifier is used for classification. We also propose two strategies for using the set of 2-D IMF features: ensemble DEMD vein representation (EDVR) and multichannel DEMD vein representation (MDVR). In experiments using palm vein databases, the proposed MDVR-based 2LDA method achieved recognition accuracy of 99.73%, thereby demonstrating its feasibility for palm vein recognition.

  16. Finger Vein Recognition Based on a Personalized Best Bit Map

    Science.gov (United States)

    Yang, Gongping; Xi, Xiaoming; Yin, Yilong

    2012-01-01

    Finger vein patterns have recently been recognized as an effective biometric identifier. In this paper, we propose a finger vein recognition method based on a personalized best bit map (PBBM). Our method is rooted in a local binary pattern based method and then inclined to use the best bits only for matching. We first present the concept of PBBM and the generating algorithm. Then we propose the finger vein recognition framework, which consists of preprocessing, feature extraction, and matching. Finally, we design extensive experiments to evaluate the effectiveness of our proposal. Experimental results show that PBBM achieves not only better performance, but also high robustness and reliability. In addition, PBBM can be used as a general framework for binary pattern based recognition. PMID:22438735

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

    International Nuclear Information System (INIS)

    Nakao, Akimasa

    2010-01-01

    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

  18. 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.

  19. Breast cancer metastatic to the kidney with renal vein involvement.

    Science.gov (United States)

    Nasu, Hatsuko; Miura, Katsutoshi; Baba, Megumi; Nagata, Masao; Yoshida, Masayuki; Ogura, Hiroyuki; Takehara, Yasuo; Sakahara, Harumi

    2015-02-01

    The common sites of breast cancer metastases include bones, lung, brain, and liver. Renal metastasis from the breast is rare. We report a case of breast cancer metastatic to the kidney with extension into the renal vein. A 40-year-old woman had undergone left mastectomy for breast cancer at the age of 38. A gastric tumor, which was later proved to be metastasis from breast cancer, was detected by endoscopy. Computed tomography performed for further examination of the gastric tumor revealed a large left renal tumor with extension into the left renal vein. It mimicked a primary renal tumor. Percutaneous biopsy of the renal tumor confirmed metastasis from breast cancer. Surgical intervention of the stomach and the kidney was avoided, and she was treated with systemic chemotherapy. Breast cancer metastatic to the kidney may present a solitary renal mass with extension into the renal vein, which mimics a primary renal tumor.

  20. Finger vein recognition based on convolutional neural network

    Directory of Open Access Journals (Sweden)

    Meng Gesi

    2017-01-01

    Full Text Available Biometric Authentication Technology has been widely used in this information age. As one of the most important technology of authentication, finger vein recognition attracts our attention because of its high security, reliable accuracy and excellent performance. However, the current finger vein recognition system is difficult to be applied widely because its complicated image pre-processing and not representative feature vectors. To solve this problem, a finger vein recognition method based on the convolution neural network (CNN is proposed in the paper. The image samples are directly input into the CNN model to extract its feature vector so that we can make authentication by comparing the Euclidean distance between these vectors. Finally, the Deep Learning Framework Caffe is adopted to verify this method. The result shows that there are great improvements in both speed and accuracy rate compared to the previous research. And the model has nice robustness in illumination and rotation.

  1. Pulmonary Septic Emboli due to Azygos Vein Septic Thrombosis

    Directory of Open Access Journals (Sweden)

    Ginius Pradhan

    2013-01-01

    Full Text Available The triad of extrapulmonary infection, contiguous septic vein thrombosis, and septic pulmonary embolism is a rare complex but associated with significant morbidity and mortality. Septic azygos vein thrombosis is extremely rare and potentially serious since it may also cause pulmonary emboli and sudden death. We report a case of a 32-year-old woman with history of IV drug abuse who presented with epidural abscess and methicillin-resistant S. aureus (MRSA bacteremia. Later she developed signs of septic pulmonary embolism secondary to septic azygos vein thrombosis. With early diagnosis, appropriate antimicrobial therapy, and control of the infectious source, resolution of the illness can be expected for most patients with avoidance of potential complications.

  2. SWI enhances vein detection using gadolinium in multiple sclerosis

    International Nuclear Information System (INIS)

    Maggi, Pietro; Mazzoni, Lorenzo N; Moretti, Marco; Grammatico, Matteo; Chiti, Stefano; Massacesi, Luca

    2015-01-01

    Susceptibility weighted imaging (SWI) combined with the FLAIR sequence provides the ability to depict in vivo the perivenous location of inflammatory demyelinating lesions – one of the most specific pathologic features of multiple sclerosis (MS). In addition, in MS white matter (WM) lesions, gadolinium-based contrast media (CM) can increase vein signal loss on SWI. This report focuses on two cases of WM inflammatory lesions enhancing on SWI images after CM injection. In these lesions in fact the CM increased the contrast between the parenchyma and the central vein allowing as well, in one of the two cases, the detection of a vein not visible on the same SWI sequence acquired before CM injection

  3. Fenestration of axillary vein by a variant axillary artery.

    Science.gov (United States)

    Hadimani, S; Desai, S D; Bagoji, I B; Patil, B S

    2013-01-01

    Variations of venous pattern in the arm are common. In this case report, we present a variation of axillary artery and vein. During routine educational dissections of axillary region, it was observed that a fenestrated axillary vein was perforated by a variant axillary artery in right arm of an old male cadaver. The axillary artery which was fenestrated through axillary vein had only two branches arising from its second part and no branches from its remaining distal parts. The branches are thoraco-acromial (usual) and another large collateral (unusual) branch. This collateral branch is the origin of several important arteries as the subscapular, circumflex scapular, posterior circumflex humeral and lateral thoracic arteries. We propose to name this artery as collateral axillary arterial trunk. The course of this collateral axillary arterial trunk and its branches and also clinical significance of this variation are discussed in the paper.

  4. Impact of short-term hemodialysis catheters on the central veins: a catheter venographic study

    Energy Technology Data Exchange (ETDEWEB)

    Oguzkurt, Levent E-mail: loguzkurt@yahoo.com; Tercan, Fahri; Torun, Dilek; Yildirim, Tuelin; Zuemruetdal, Ayseguel; Kizilkilic, Osman

    2004-12-01

    Objective: To determine the incidence of pericatheter sleeve formation, thrombus formation, and stenosis of the central veins in hemodialysis patients with temporary catheters. Methods and material: In this prospective study, 57 patients (40 males, 17 females) with temporary dialysis catheters had catheter venography by pulling back the catheter just before removal. Patient's age range was 25-87 years (mean age, 51 years). The venographic studies were evaluated for pericatheter sleeve formation, thrombus formation, and stenosis of the brachiocephalic vein (BCV) and the superior vena cava (SVC). The IJV could only be evaluated if there was adequate filling during contrast administration. In a subgroup of patients who had had only right IJV or only right SCV catheters, impact of these catheters on the central veins was compared. Results: The catheter location was right internal jugular vein (IJV) in 26 cases, right subclavian vein (SCV) in 27 cases, left IJV in 1 case, and left SCV in 3 cases. Thirty-two patients (56%) had had only one temporary catheter and the rest had had more than one inserted. The mean dwell time for the catheters was 21 days (range 7-59 days). A pericatheter sleeve was detected on venography in 32 (56%) patients and thrombus formation was noted in 16 patients (28%). A total of 41 patients (72%) exhibited pericatheter sleeve and/or thrombus formation. While 19 of the 32 patients (59%) without previous catheterization had a sleeve around the catheter, only 13 (52%) of 25 patients who had had multiple catheters inserted had a sleeve (P>0.05). Of the eight patients (14%) with BCV stenosis, two had >50% stenosis. Only one patient (2%) had mild stenosis of the SVC. Three patients out of 15 (20%) who had diagnostic venography for the IJV had severe stenosis of the vein. Pericatheter sleeve formation was more frequent in women (P<0.05). However, there were no statistical differences with respect to pericatheter sleeve formation, luminal filling

  5. Renal vein doppler sonography in rabbits with acute ureteral obstruction: usefulness of impedance index of renal vein

    International Nuclear Information System (INIS)

    Sohn, Kyung Myung; Chung, Su Kyo; Lee, Sung Yong

    2004-01-01

    To evaluate the usefulness of the impedance index of the renal vein for the diagnosis of acute obstructive uropathy in rabbits. Ligation of the left ureter was done in 12 rabbits. Doppler sonography of the interlobar veins in both kidneys was checked before and 30 minutes, 1, 3, 6, 9 and 24 hours after ureteral ligation. The venous impedance index [(peak flow signal-least flow signal)/peak flow signal] was compared between the obstructed and non-obstructed kidneys for all periods. The change in the impedance index after ureteral ligation was also compared between the obstructed and non-obstructed kidneys. A decrease in the impedance index of the intrarenal vein was observed starting from 30 mins atter ureteral ligation, and the index remained low up to 24 hours after ureteral ligation. The obstructed kidneys had a significantly lower impedance index than the contralateral kidneys for all six of the postligation measurements (p< 0.05). There were significant differences in the change of impedance index after ureteral ligation between the obstructed and non-obstructed kidneys (p< 0.05). The impedance index of the intrarenal vein was significantly decreased in the obstructed kidneys. The measurement of the impedance index of the intrarenal vein using Doppler sonography could provide a useful method of diagnosing obstructive uropathy

  6. Palm-vein classification based on principal orientation features.

    Directory of Open Access Journals (Sweden)

    Yujia Zhou

    Full Text Available Personal recognition using palm-vein patterns has emerged as a promising alternative for human recognition because of its uniqueness, stability, live body identification, flexibility, and difficulty to cheat. With the expanding application of palm-vein pattern recognition, the corresponding growth of the database has resulted in a long response time. To shorten the response time of identification, this paper proposes a simple and useful classification for palm-vein identification based on principal direction features. In the registration process, the Gaussian-Radon transform is adopted to extract the orientation matrix and then compute the principal direction of a palm-vein image based on the orientation matrix. The database can be classified into six bins based on the value of the principal direction. In the identification process, the principal direction of the test sample is first extracted to ascertain the corresponding bin. One-by-one matching with the training samples is then performed in the bin. To improve recognition efficiency while maintaining better recognition accuracy, two neighborhood bins of the corresponding bin are continuously searched to identify the input palm-vein image. Evaluation experiments are conducted on three different databases, namely, PolyU, CASIA, and the database of this study. Experimental results show that the searching range of one test sample in PolyU, CASIA and our database by the proposed method for palm-vein identification can be reduced to 14.29%, 14.50%, and 14.28%, with retrieval accuracy of 96.67%, 96.00%, and 97.71%, respectively. With 10,000 training samples in the database, the execution time of the identification process by the traditional method is 18.56 s, while that by the proposed approach is 3.16 s. The experimental results confirm that the proposed approach is more efficient than the traditional method, especially for a large database.

  7. Hepatic vein flow pattern in children: assesment with Doppler sonography

    International Nuclear Information System (INIS)

    Ahmetoglu, Ali; Kosucu, Polat; Arikan, Elif; Dinc, Hasan; Resit Guemele, Halit

    2005-01-01

    Background: Aim of this study is to establish normal hepatic vein flow pattern and effect of age, sex, activity and feeding status on the hepatic flow pattern in normal Turkish children less than 15 years of ages and also to compare our values with the previously reported studies. Method: Hepatic vein flow patterns were evaluated in 150 children (83 male, 67 female) without any cardiac, pulmonary and liver disease by using Doppler sonography. Blood flow patterns were compared with age, sex, activity, and feeding status of the children. Results: Only 44% of the children had triphasic flow pattern in all hepatic veins. Monophasic flow pattern was the most common flow pattern in children less then 1 year of age. Triphasic flow pattern increase after 1 year of age. Although most of the children older than 1 year of age had triphasic flow pattern, there is some variation in the flow patterns of the hepatic veins in the same subject. Triphasic hepatic flow pattern is most commonly seen in the left hepatic vein and least commonly seen in the right hepatic vein. There was no significant difference between male and girl, children who were agitated or calm and fasting or not fasting in respect to triphasic flow pattern. Conclusion: Liver stiffening is not only the reason for abnormal hepatic flow pattern and some other physiologic factors may also lead to mono and/or diphasic flow pattern in the children. Absence of triphasic flow pattern must not be accepted as a liver pathology in children especially younger than 1 year of age

  8. Post-magmatic structural evolution of the Troodos Ophiolite Pillow Lavas revealed by microthermometry within vein precipitates, with application to Alpine-Mediterranean supra-subduction zone settings

    Science.gov (United States)

    Kurz, W.; Quandt, D.; Micheuz, P.; Krenn, K.

    2017-12-01

    The Troodos ophiolite, Cyprus, is one of the best preserved ophiolites. Based on geochemical data a supra-subduction zone (SSZ) setting was proposed. Microtextures and fluid inclusions of veins and vesicles within the Pillow Lavas record the post-magmatic structural and geochemical evolution of this SSZ beginning at 75 Ma. Three different vein types from the Upper and Lower Pillow Lavas are distinguished and imply vein precipitation under a dominant extensional regime: (1) syntaxial calcite-, quartz- and zeolite-bearing veins are interpreted as mineralized extension fractures that were pervaded by seawater. This advective fluid flow in an open system changed later into a closed system characterized by geochemical self-organization. (2) Blocky and (3) antitaxial fibrous calcite veins are associated with brecciation due to hydrofracturing and diffusion-crystallization processes, respectively. Based on aqueous fluid inclusion chemistry with seawater salinities in all studied vein types, representative fluid inclusion isochores crossed with calculated litho- and hydrostatic pressure conditions yield mineral precipitation temperatures between 180 and 210 °C, for veins and vesicles hosted in the Upper and Lower Pillow Lavas. This points to a heat source for the circulating seawater and implies that vein and vesicle minerals precipitated shortly after pillow lava crystallization under dominant isobaric cooling conditions. Compared to previous suggestions derived from secondary mineralization a less steep geothermal gradient of 200 °C from the Sheeted Dyke Complex to the Pillow Lavas of the Troodos SSZ is proposed. Further fossil and recent SSZ like the Mirdita ophiolite, Albania, the South-Anatolian ophiolites, Turkey, and the Izu-Bonin fore arc, respectively, reveal similar volcanic sequences. Vein samples recovered during International Ocean Discovery Program expedition 351 and 352 in the Izu-Bonin back and fore arc, respectively, indicate also seawater infiltration

  9. Congenital absence of the portal vein presenting as pulmonary hypertension

    International Nuclear Information System (INIS)

    Jun, Sur Young; Lee, Whal; Cheon, Jung Eun; Kim, Woo Sun; Kim, In One; Yeon, Kyung Mo

    2007-01-01

    Congenital absence of the portal vein (CAPV) is a rare malformation in which intestinal and splenic venous flow bypasses the liver and drains directly into the systemic circulation via a congenital portosystemic shunt. We describe two cases of CAPV presenting as pulmonary hypertension that were initially suspected as primary pulmonary hypertension. However, subsequent ultrasonography and CT detected the absence of a portal vein and the presence of a portosystemic shunt. Pulmonary hypertension is a recognized complication of liver disease and portal hypertension. However, these two cases illustrate that CAPV may result in pulmonary hypertension without liver disease or portal hypertension

  10. MDCT findings of right circumaortic renal vein with ectopic kidney

    International Nuclear Information System (INIS)

    Kim, Min Kyun; Ku, Young Mi; Chun, Chang Woo; Lee, Su Lim

    2013-01-01

    Anomalies of renal vasculature combined with ectopic kidneys were found on a multi-detector CT scan. Knowledge of renal vascular variation is very important for surgical exploration, radiologic intervention and staging for urologic cancer. We present an extremely rare case of a right circumaortic renal vein combined with a right ectopic kidney. The right kidney was located at the level between the third and fifth lumbar vertebra. The right circumaortic renal vein crossed the aorta and returned to the inferior vena cava behind the aorta.

  11. 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.

  12. Finger vein recognition using local line binary pattern.

    Science.gov (United States)

    Rosdi, Bakhtiar Affendi; Shing, Chai Wuh; Suandi, Shahrel Azmin

    2011-01-01

    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).

  13. Congenital absence of the portal vein presenting as pulmonary hypertension

    Energy Technology Data Exchange (ETDEWEB)

    Jun, Sur Young; Lee, Whal; Cheon, Jung Eun; Kim, Woo Sun; Kim, In One; Yeon, Kyung Mo [Seoul National University Hospital, Seoul (Korea, Republic of)

    2007-11-15

    Congenital absence of the portal vein (CAPV) is a rare malformation in which intestinal and splenic venous flow bypasses the liver and drains directly into the systemic circulation via a congenital portosystemic shunt. We describe two cases of CAPV presenting as pulmonary hypertension that were initially suspected as primary pulmonary hypertension. However, subsequent ultrasonography and CT detected the absence of a portal vein and the presence of a portosystemic shunt. Pulmonary hypertension is a recognized complication of liver disease and portal hypertension. However, these two cases illustrate that CAPV may result in pulmonary hypertension without liver disease or portal hypertension.

  14. Portal vein thrombosis; risk factors, clinical presentation and treatment

    DEFF Research Database (Denmark)

    Sogaard, Kirstine K; Astrup, Lone B; Vilstrup, Hendrik

    2007-01-01

    and treatment of portal vein thrombosis in a single-centre. METHODS: Sixty-seven patients were identified in the electronic records from 1992 to 2005. All data were obtained from the patient records. RESULTS: One or more risk factors (e.g. prothrombotic disorder or abdominal inflammation) were present in 87......BACKGROUND: Portal vein thrombosis (PVT) is increasingly frequently being diagnosed, but systematic descriptions of the natural history and clinical handling of the condition are sparse. The aim of this retrospective study was to describe risk factors, clinical presentation, complications...

  15. The comparative anatomy of the forelimb veins of primates.

    OpenAIRE

    Thiranagama, R; Chamberlain, A T; Wood, B A

    1989-01-01

    One hundred and thirteen forelimbs taken from 62 individuals belonging to 17 primate genera were dissected to reveal the entire course of the superficial venous system. The course of the deep venous system was also documented in at least one forelimb of each primate genus, and the number and location of perforating veins was recorded in 18 human and 45 non-human primate limbs. In Pan, Gorilla and in about 25% of human specimens the lateral superficial vein was confined to the forearm, while i...

  16. Finger Vein Recognition Using Local Line Binary Pattern

    Science.gov (United States)

    Rosdi, Bakhtiar Affendi; Shing, Chai Wuh; Suandi, Shahrel Azmin

    2011-01-01

    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). PMID:22247670

  17. Upper Extremity Deep Vein Thromboses: The Bowler and the Barista

    Directory of Open Access Journals (Sweden)

    Seth Stake

    2016-01-01

    Full Text Available Effort thrombosis of the upper extremity refers to a deep venous thrombosis of the upper extremity resulting from repetitive activity of the upper limb. Most cases of effort thrombosis occur in young elite athletes with strenuous upper extremity activity. This article reports two cases who both developed upper extremity deep vein thromboses, the first being a 67-year-old bowler and the second a 25-year-old barista, and illustrates that effort thrombosis should be included in the differential diagnosis in any patient with symptoms concerning DVT associated with repetitive activity. A literature review explores the recommended therapies for upper extremity deep vein thromboses.

  18. Upper Extremity Deep Vein Thromboses: The Bowler and the Barista.

    Science.gov (United States)

    Stake, Seth; du Breuil, Anne L; Close, Jeremy

    2016-01-01

    Effort thrombosis of the upper extremity refers to a deep venous thrombosis of the upper extremity resulting from repetitive activity of the upper limb. Most cases of effort thrombosis occur in young elite athletes with strenuous upper extremity activity. This article reports two cases who both developed upper extremity deep vein thromboses, the first being a 67-year-old bowler and the second a 25-year-old barista, and illustrates that effort thrombosis should be included in the differential diagnosis in any patient with symptoms concerning DVT associated with repetitive activity. A literature review explores the recommended therapies for upper extremity deep vein thromboses.

  19. Investigation of adverse events associated with an off-label use of arterial stents and CE-marked iliac vein stents in the iliac vein: insights into developing a better iliac vein stent.

    Science.gov (United States)

    Shida, Takuya; Umezu, Mitsuo; Iwasaki, Kiyotaka

    2018-06-01

    We analyzed the adverse events associated with an off-label use of arterial stents and CE-marked iliac vein stents for the treatment of iliac venous thromboembolism and investigated their relationships with the anatomical features of the iliac vein, to gain insights into the development of a better iliac vein stent. Reports of adverse events following the use of stents in the iliac vein were retrieved from the Manufacturer and User Facility Device Experience (MAUDE) database that contain suspected device-associated complications reported to the Food and Drug Administration. Data from 2006 to 2016 were investigated. The literature analysis was also conducted using PubMed, Cochrane Library, EMBASE, and Web of Science focusing on English articles published up to 4 October 2016. The analysis of 88 adverse events from the MAUDE database and 182 articles from the literature revealed that a higher number of adverse events had been reported following the use of arterial stents in the iliac vein compared to CE-marked iliac vein stents. While stent migration and shortening were reported only for the arterial stents, stent fracture and compression occurred regardless of the stent type, even though a vein does not pulsate. A study of the anatomical features of the iliac vein implies that bending, compression, and kink loads are applied to the iliac vein stents in vivo. For designing, developing, and pre-clinical testing of stents intended for use in the iliac vein, the above mechanical load environments induced by the anatomical features should be considered.

  20. 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

  1. Evaluation of the portal veins, hepatic veins and bile ducts using fat-suppressed segmented True FISP

    International Nuclear Information System (INIS)

    Ueda, Takashi; Uchikoshi, Masato; Imaoka, Izumi; Iwaya, Kazuo; Matsuo, Michimasa; Wada, Akihiko

    2005-01-01

    True FISP (fast imaging with steady-state free precession) is a fast imaging technique that provides high SNR (signal to noise ratio) and excellent delineation of parenchymal organs. The contrast of True FISP depends on the mixture of T 2 /T 1 . Vessels with slow flow are usually displayed as high signal intensity on True FISP images. The purpose of this study was to optimize fat-suppressed (FS) segmented True FISP imaging for portal veins, hepatic veins, and bile ducts. FS segmented True FISP images were applied to the phantoms of liver parenchyma, saline, and oil with various flip angles (every 10 degrees from 5-65 degrees) and k-space segmentations (3, 15, 25, 51, 75, 99). Five healthy volunteers were also examined to get optimized flip angle and k-space segmentation. The largest flip angle, 65 degrees, showed the best contrast between the liver parenchyma phantom, saline, and oil. The largest segmentations, 99, provided the best contrast between a liver parenchyma phantom and saline. However, the signal of the oil phantom exceeded that of the liver parenchyma phantom with 99 segmentations. As a result, the flip angle of 65 degrees and 75 segments is recommended to get the best contrast between the liver parenchyma phantom and saline, while suppressing the signal of oil. The volunteer studies also support the phantom studies and showed excellent anatomical delineation of portal veins, hepatic veins, and bile ducts when using these parameters. We conclude that True FISP is potentially suitable for the imaging of portal veins, hepatic veins, and bile ducts. The flip angle of 65 degrees with 75 segments is recommended to optimize FS segmented True FISP images. (author)

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

    International Nuclear Information System (INIS)

    Park, Soon Chan; Kwon, Se Hwan; Oh, Joo Hyeong; Ryu, Kyung Nam; Ahn, Hyung Joon; Park, Ho Chul

    2009-01-01

    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

  3. One-step reconstruction of the right inferior hepatic veins using auto-venous grafts in living-donor liver transplantation.

    Science.gov (United States)

    Ikegami, Toru; Shirabe, Ken; Yoshiya, Shohei; Soejima, Yuji; Yoshizumi, Tomoharu; Uchiyama, Hideaki; Toshima, Takeo; Motomura, Takashi; Maehara, Yoshihiko

    2013-07-01

    Reconstruction of the right inferior hepatic vein (RIHV) presents a major technical challenge in living donor liver transplantation (LDLT) using right lobe grafts. We studied 47 right lobe LDLT grafts with RIHV revascularization, comparing one-step reconstruction, performed post-May 2007 (n = 16), with direct anastomosis, performed pre-May 2007 (n = 31). In the one-step reconstruction technique, the internal jugular vein (n = 6), explanted portal vein (n = 5), inferior vena cava (n = 3), and shunt vessels (n = 2) were used as venous patch grafts for unifying the right hepatic vein, RIHVs, and middle hepatic vein tributaries. By 6 months after LDLT, there was no case of occlusion of the reconstructed RIHVs in the one-step reconstruction group, but a cumulative occlusion rate of 18.2 % in the direct anastomosis group. One-step reconstruction required a longer cold ischemic time (182 ± 40 vs. 115 ± 63, p one-step reconstruction and 83.9 % with direct anastomosis, respectively. One-step reconstruction of the RIHVs using auto-venous grafts is an easy and feasible technique promoting successful right lobe LDLT.

  4. Clinical outcome of ovarian vein embolization in pelvic congestion ...

    African Journals Online (AJOL)

    Introduction: Pelvic congestion syndrome (PCS), is a condition associated with ovarian vein (OV) incompetence among other causes. It is manifested by chronic pelvic pain with associated dyspareunia and dysmenorrhea. The diagnosis of PCS is often overlooked and the management can be difficult. Traditional therapy for ...

  5. Comorbidity in patients with branch retinal vein occlusion

    DEFF Research Database (Denmark)

    Bertelsen, Mette; Linneberg, Allan; Rosenberg, 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....

  6. Prediction of subclavian vein location using plain chest radiography.

    Science.gov (United States)

    Fukutome, T; Shigematsu, A

    1986-12-01

    The relationship between the right subclavian vein and the thoracic inlet below the clavicle was studied by Venography in 72 patients. The area of the thoracic inlet below the clavicle was defined as a radiolucent area surrounded superiorly by the lower border of the clavicle, inferiorly by the inner margin of the first rib and medially by the lateral margin of the manubrium (CRM area). In 10 patients, the subclavian vein was situated below the axis of the clavicle, and the CRM area was large enough to extend near the top of the first rib arch. In 62 patients, the subclavian vein extended above the axis of the clavicle and the CRM area was small or invisible. The existence of a large thoracic inlet below the clavicle (large CRM area which extends near the top of the first rib arch) may be a useful indicator for predicting the low location of the subclavian vein, and may be used to predict or explain venipuncture failure using the standard infraclavicular approach.

  7. Transhepatic course of the portal vein with subcapsular ramification

    Energy Technology Data Exchange (ETDEWEB)

    Goebel, N

    1985-06-01

    In a patient, investigated for uterine carcinoma, CT of the liver showed an anomalous course of a large portal vein, which traversed the liver and divided under the ventrolateral liver capsule in its branches. There were no signs of portal hypertension.

  8. Conservative Management of Azygous Vein Rupture in Blunt Thoracic Trauma

    Directory of Open Access Journals (Sweden)

    Cian McDermott

    2012-01-01

    Full Text Available We report a case of successful conservative management of acute traumatic rupture of the azygous vein. A 48-year-old male was involved in a motor vehicle collision. Primary survey revealed acute right intrathoracic haemorrhage. He remained haemodynamically stable with rapid infusion of warmed crystalloid solution and blood. Computed tomographic imaging showed a contained haematoma of the azygous vein. The patient was managed conservatively in the intensive care. Azygous vein laceration resulting from blunt thoracic trauma is a rare condition that carries a universally poor prognosis unless the appropriate treatment is instituted. Clinical features include acute hypovolaemic shock, widened mediastinum on chest radiograph, and a right-sided haemothorax. Haemodynamic collapse necessitates immediate resuscitative thoracotomy. Interest in this injury stems from the severity of the clinical condition, difficulty in diagnosis, the onset of a rapidly deteriorating clinical course all of which can be promptly reversed by timely and appropriate treatment. Although it is a rare cause of intramediastinal haemorrhage, it is proposed that a ruptured azygous vein should be considered in every trauma case causing a right-sided haemothorax or widened mediastinum. All cases described in the literature to date involved operative management. We present a case of successful conservative management of this condition.

  9. Portal vein embolization before liver resection: a systematic review

    NARCIS (Netherlands)

    van Lienden, K. P.; van den Esschert, J. W.; de Graaf, W.; Bipat, S.; Lameris, J. S.; van Gulik, T. M.; van Delden, O. M.

    2013-01-01

    This is a review of literature on the indications, technique, and outcome of portal vein embolization (PVE). A systematic literature search on outcome of PVE from 1990 to 2011 was performed in Medline, Cochrane, and Embase databases. Forty-four articles were selected, including 1,791 patients with a

  10. Case Report: Supernumerary right renal vein draining inferior to the ...

    African Journals Online (AJOL)

    With recent increase in renal transplantations, renovascular reconstructions and imaging advances, meticulous knowledge of the normal and variant anatomy of the renal vasculature is important to avoid potential pitfalls. We report a case of an accessory renal vein arising from the right kidney, and draining into the inferior ...

  11. Ileocolic Arteriovenous Fistula with Superior Mesenteric Vein Aneurism: Endovascular Treatment

    International Nuclear Information System (INIS)

    Gregorio, Miguel Angel de; Gimeno, Maria Jose; Medrano, Joaquin; Schoenholz, Caudio; Rodriguez, Juan; D'Agostino, Horacio

    2004-01-01

    We report a case of a venous aneurysm secondary to an acquired ileocolic arteriovenous fistula in a 64-year-old woman with recurrent abdominal pain and history of appendectomy. The aneurysm was diagnosed by ultrasound and computed tomography. Angiography showed an arteriovenous fistula between ileocolic branches of the superior mesenteric artery and vein. This vascular abnormality was successfully treated with coil embolization

  12. Research and implementation of finger-vein recognition algorithm

    Science.gov (United States)

    Pang, Zengyao; Yang, Jie; Chen, Yilei; Liu, Yin

    2017-06-01

    In finger vein image preprocessing, finger angle correction and ROI extraction are important parts of the system. In this paper, we propose an angle correction algorithm based on the centroid of the vein image, and extract the ROI region according to the bidirectional gray projection method. Inspired by the fact that features in those vein areas have similar appearance as valleys, a novel method was proposed to extract center and width of palm vein based on multi-directional gradients, which is easy-computing, quick and stable. On this basis, an encoding method was designed to determine the gray value distribution of texture image. This algorithm could effectively overcome the edge of the texture extraction error. Finally, the system was equipped with higher robustness and recognition accuracy by utilizing fuzzy threshold determination and global gray value matching algorithm. Experimental results on pairs of matched palm images show that, the proposed method has a EER with 3.21% extracts features at the speed of 27ms per image. It can be concluded that the proposed algorithm has obvious advantages in grain extraction efficiency, matching accuracy and algorithm efficiency.

  13. 'Electricity is running through my veins': DIE symbiose Zwischen ...

    African Journals Online (AJOL)

    'Electricity is running through my veins': the symbiosis between humankind and technology in Marshall McLuhan's media theory. In contrast to a widespread technical-mathematical media model that reduces electronic media to transmission channels, thereby making information into a quantifi able commodity, Canadian ...

  14. Deep Vein Thrombosis: Risk Factors and Prevention in Surgical ...

    African Journals Online (AJOL)

    BACKGROUND: Deep vein thrombosis (DVT) is a cause of preventable morbidity and mortality in hospitalized surgical patients. The occurrence of the disease is related to presence of risk factors, which are related primarily to trauma, venous stasis and hyper-coagulability. DVT seems not to be taken seriously by many ...

  15. 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...

  16. 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

  17. Ultrasound and computed tomographic demonstration of portal vein thrombosis in hepatocellular carcinoma

    Energy Technology Data Exchange (ETDEWEB)

    Pauls, C H

    1981-07-15

    Two cases of multinodular hepatocellular carcinoma (HCC) in which ultrasound and computed tomography (CT) revealed portal vein thrombosis are presented. The diagnostic value of determining the presence of portal vein thrombosis in patients with suspected HCC is discussed.

  18. Liver Regeneration After Portal Vein Embolization Using Absorbable and Permanent Embolization Materials in a Rabbit Model

    NARCIS (Netherlands)

    van den Esschert, Jacomina W.; van Lienden, Krijn P.; Alles, Lindy K.; van Wijk, Albert C.; Heger, Michal; Roelofs, Joris J.; van Gulik, Thomas M.

    2012-01-01

    Objective: To compare the safety and hypertrophy response after portal vein embolization (PVE) using 2 absorbable and 3 permanent embolization materials. Background: Portal vein embolization is used to increase future remnant liver volume preoperatively. Application of temporary, absorbable

  19. 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

  20. Gold-bearing hydrothermal veins in Chukotka

    Energy Technology Data Exchange (ETDEWEB)

    Davidenko, N.M.

    1980-01-01

    Indicators such as the correlation of mineralization to plutonic and vulcanic formations and various facies of metamorphism, the character of the structural-tectonic control of mineralization, characteristics of silica redistribution as well that of calcium, water, and other components in altering ore zones, the specificity of sygenetic fluid inclusions in minerals, morphology, the internal structure and other typomorphic indicators of native gold and its accessories are utilized in the working out of a genetic classification for compiling a complex of diagnostic indicators of post-magmatic mineralization on Chukotka at various depths. Those indicators, in addition to earlier known hydrothermal gold ore formations, can be used to identify still other types of mineralization, particularly pyrite group minerals.

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

    International Nuclear Information System (INIS)

    Lopez, Anthony James

    2015-01-01

    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

  3. Imaging of the ventricular septal wall and the portal vein by digital subtraction angiography

    Energy Technology Data Exchange (ETDEWEB)

    Fujii, Kyoichi; Harashima, Haruhiko; Yamada, Hiromi; Hiraishi, Takahisa; Mikami, Fumio [National Medical Center of Hospital, Tokyo (Japan)

    1983-06-01

    Digital subtraction angiography (DSA) was performed in 2 cases of hypertrophic cardiomyopathy and 2 cases of portal vein disorder. In hypertrophic cardiomyopathy, DSA with the infusion of isopaque 370 at the speed of 5 to 7 ml/sec produced the image of the ventricular septal wall, showing a small ejection fraction. Of portal vein disorders, DSA revealed the portal vein and was helpful in diagnosing tumoral thrombosis of the portal vein in a case of liver carcinoma and portal hypertension.

  4. Percutaneous transhepatic sclerotherapy with embolization of the drainage vein for a gastric varix

    OpenAIRE

    Yoshimatsu, Rika; Yamagami, Takuji; Miura, Hiroshi; Okuda, Kotaro

    2014-01-01

    We experienced a case with a gastric varix that did not have a catheterizable main drainage vein and had multiple afferent veins. For this case we successfully performed percutaneous transhepatic sclerotherapy using the following procedure. After the drainage vein was embolized by metallic coils and n-butyl cyanoacrylate from a microcatheter that was advanced through the gastric varix, 5% ethanolamine oleate-iopamidol was infused into the gastric varix from one main afferent vein under balloo...

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

    International Nuclear Information System (INIS)

    Chennur, Vikash SrinivasaiahSetty; Sharma, Raju; Gamanagatti, Shivanand; Gupta, Arun Kumar; Bhatnagar, Veereshwar; Vishnubhatla, Sreenivas

    2011-01-01

    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.)

  6. 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.)

  7. Updated cannulation technique for tissue plasminogen activator injection into peripapillary retinal vein for central retinal vein occlusion.

    Science.gov (United States)

    van Overdam, Koen A; Missotten, Tom; Spielberg, Leigh H

    2015-12-01

    To update the surgical technique in which a vitrectomy is performed and a retinal branch vein is cannulated and infused with recombinant tissue plasminogen activator (RTPA) to treat central retinal vein occlusion (CRVO) in patients who present with very low visual acuity (VA). Twelve consecutive patients (12 eyes) with CRVO and low VA (logMAR >1.00) at presentation were treated using this method. Cannulation of a peripapillary retinal vein and stable injection of RTPA was successfully performed without surgery-related complications in all 12 eyes. At 12 months after surgery, 8 of the 12 patients (67%) experienced at least one line of improvement in best corrected visual acuity; 6 of the 12 (50%) improved ≥5 lines and 2 (17%) improved ≥8 lines. After additional grid laser and/or subconjunctival or intravitreal corticosteroids, the mean decrease in central foveal thickness was 260 μm, and the mean total macular volume decreased from 12.10 mm(3) to 9.24 mm(3) . Four patients received panretinal photocoagulation to treat either iris neovascularization (n = 2) or neovascularization of the retina and/or disc (n = 2). Administration of RTPA via a peripapillary vein using this updated technique provides an alternative or additional treatment option for patients with very low VA after CRVO. © 2015 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.

  8. Percutaneous embolization of varicocele: technique, indications, relative contraindications, and complications

    Directory of Open Access Journals (Sweden)

    Joshua Halpern

    2016-01-01

    Full Text Available There are several options for the treatment of varicocele, including surgical repair either by open or microsurgical approach, laparoscopy, or through percutaneous embolization of the internal spermatic vein. The ultimate goal of varicocele treatment relies on the occlusion of the dilated veins that drain the testis. Percutaneous embolization offers a rapid recovery and can be successfully accomplished in approximately 90% of attempts. However, the technique demands interventional radiologic expertise and has potential serious complications, including vascular perforation, coil migration, and thrombosis of pampiniform plexus. This review discusses the common indications, relative contraindications, technical details, and risks associated with percutaneous embolization of varicocele.

  9. 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.

    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

  10. Central venous access through the external jugular vein in children submitted to bone marrow transplantation

    Directory of Open Access Journals (Sweden)

    José Luiz de Godoy

    2005-01-01

    Full Text Available Establishment of long-term central venous access is a sine qua non step for bone marrow transplantation in children. Most frequently, long-term central venous access has been obtained via blind percutaneous cannulation of subclavian and internal jugular veins or via internal jugular vein cutdown. In order to avoid some potential minor and major complications associated with the subclavian or internal jugular approaches, the authors describe an easy, simple and safe method for central venous access through an external jugular vein cutdown that should be of interest to readers involved in the field of bone marrow transplantation. It should be also considered for children as well as adults needing central venous access via an external catheter - or totally implantable port - for reasons other than bone marrow transplantation, such as total parenteral nutrition and administration of chemotherapeutic agents.O estabelecimento de um acesso venoso central de longa duração é uma condição sine qua non para realizar o transplante de medula óssea em crianças. Com frequência, este acesso tem sido obtido através da punção percutânea das veias subclávia e jugular interna ou via dissecção da jugular interna. Com o objetivo de evitar algumas complicações maiores e menores associadas com a subclávia e a jugular interna, os autores descrevem um método simples, fácil e seguro para o acesso venoso central através de dissecção da veia jugular externa. Este método deveria ser de interesse dos leitores envolvidos com o transplante de medula óssea e ser considerado também para crianças e/ou adultos que necessitem de cateter venoso central de longa permanência (externo ou totalmente implantável devido a outras razões, como a nutrição parenteral ou a administração de agentes quimioterápicos.

  11. Pulmonary vein region ablation in experimental vagal atrial fibrillation: role of pulmonary veins versus autonomic ganglia.

    Science.gov (United States)

    Lemola, Kristina; Chartier, Denis; Yeh, Yung-Hsin; Dubuc, Marc; Cartier, Raymond; Armour, Andrew; Ting, Michael; Sakabe, Masao; Shiroshita-Takeshita, Akiko; Comtois, Philippe; Nattel, Stanley

    2008-01-29

    Pulmonary vein (PV) -encircling radiofrequency ablation frequently is effective in vagal atrial fibrillation (AF), and there is evidence that PVs may be particularly prone to cholinergically induced arrhythmia mechanisms. However, PV ablation procedures also can affect intracardiac autonomic ganglia. The present study examined the relative role of PVs versus peri-PV autonomic ganglia in an experimental vagal AF model. Cholinergic AF was studied under carbachol infusion in coronary perfused canine left atrial PV preparations in vitro and with cervical vagal stimulation in vivo. Carbachol caused dose-dependent AF promotion in vitro, which was not affected by excision of all PVs. Sustained AF could be induced easily in all dogs during vagal nerve stimulation in vivo both before and after isolation of all PVs with encircling lesions created by a bipolar radiofrequency ablation clamp device. PV elimination had no effect on atrial effective refractory period or its responses to cholinergic stimulation. Autonomic ganglia were identified by bradycardic and/or tachycardic responses to high-frequency subthreshold local stimulation. Ablation of the autonomic ganglia overlying all PV ostia suppressed the effective refractory period-abbreviating and AF-promoting effects of cervical vagal stimulation, whereas ablation of only left- or right-sided PV ostial ganglia failed to suppress AF. Dominant-frequency analysis suggested that the success of ablation in suppressing vagal AF depended on the elimination of high-frequency driver regions. Intact PVs are not needed for maintenance of experimental cholinergic AF. Ablation of the autonomic ganglia at the base of the PVs suppresses vagal responses and may contribute to the effectiveness of PV-directed ablation procedures in vagal AF.

  12. Thyrocervical artery - jugular fistula following internal jugular venous catheterization

    Directory of Open Access Journals (Sweden)

    P P Zachariah

    2014-01-01

    Full Text Available Arteriovenous fistula (AVF is an anomalous communication between an artery and a vein, caused by an iatrogenic or traumatic etiology. Surgically created upper limb AVF remains the preferred vascular access for patients on maintenance hemodialysis. Nonetheless central vein cannulation for hemodialysis is a common procedure done in patients who need hemodialysis. We incidentally detected a thyrocervical artery - jugular fistula in a patient on maintenance hemodialysis. He underwent a successful intra arterial coil embolization of the feeding vessel. Review of literature has shown that, a thyrocervical artery - internal jugular vein arteriovenous fistula following a central venous catheterization has not been reported so far.

  13. Multimodal ultrasonographic assessment of leiomyosarcoma of the femoral vein in a patient misdiagnosed as having deep vein thrombosis: A case report.

    Science.gov (United States)

    Zhang, Mei; Yan, Feng; Huang, Bin; Wu, Zhoupeng; Wen, Xiaorong

    2017-11-01

    Primary leiomyosarcoma (LMS) of the vein is a rare tumor that arises from the smooth muscle cells of the vessel wall and has an extremely poor prognosis. This tumor can occur in vessels such as the inferior vena cava, great saphenous vein, femoral vein, iliac vein, popliteal vein, and renal vein; the inferior vena cava is the most common site. LMS of the femoral vein can result in edema and pain in the lower extremity; therefore, it is not easy to be differentiated from deep vein thrombosis (DVT). Moreover, virtually no studies have described the ultrasonographic features of LMS of the vein in detail. We present a case of a 55-year-old woman with LMS of the left femoral vein that was misdiagnosed as having deep vein thrombosis (DVT) on initial ultrasonographic examination. The patient began to experience edema and pain in her left leg seven months previously. She was diagnosed as having DVT on initial ultrasonographic examination, but the DVT treatment that she had received for 7 months failed to improve the status of her left lower limb. She subsequently underwent re-examination by means of a multimodal ultrasonographic imaging approach (regular B-mode imaging, color Doppler imaging, pulsed-wave Doppler imaging, contrast-enhanced ultrasonography), which confirmed a diagnosis of LMS. This patient was treated successfully with surgery. This case demonstrates that use of multiple ultrasonographic imaging techniques can be helpful to diagnose LMS accurately. Detection of vasculature in a dilated vein filled with a heterogeneous hypoechoic substance on ultrasonography is a sign of a tumor. The pitfall of misdiagnosing this tumor as DVT is a useful reminder.

  14. Budd-Chiari and inferior caval vein syndromes due to membranous obstruction of the liver veins. Successful treatment with angioplasty and transcaval TIPS

    DEFF Research Database (Denmark)

    Holland-Fischer, Peter

    2004-01-01

    The case is presented of a 25-year-old Caucasian patient with Budd-Chiari syndrome due to membranous obstruction of the liver veins and inferior caval vein syndrome as a result of secondary hyperplasia of the caudate lobe of the liver, obstructing the caval vein. Diagnosis was established...... that angioplasty and TIPS are safe and efficient procedures to reduce liver engorgement and complications of portal hypertension in selected patients with Budd-Chiari syndrome....

  15. Percutaneous transsplenic catheterization of portal vein: technique and clinical application

    International Nuclear Information System (INIS)

    Zhu Kangshun; Huang Mingsheng; Pang Pengfei; Zhou Bin; Xu Changmo; Qian Jiesheng; Li Zhengran; Jiang Zaibo; Shan Hong

    2010-01-01

    Objective: To evaluate the feasibility of percutaneous transsplenic portal vein catheterization (PTSPC). Methods: Thirty patients with portal hypertension underwent gastroesophageal variceal embolization via PTSPC route, 2 of which simultaneously underwent portal vein stenting. This study included the patients with portal venous obstruction (tumor embolus or thrombus) or the patients with serious liver atrophy caused by liver cirrhosis. The patients who had severe coagulation insufficiency (with prothrombin time > 20 s) were excluded. Of the 30 patients, 17 had primary hepatocellular carcinoma with main portal venous tumor embolus, 13 had cirrhosis with severe liver atrophy and (or)slight or moderate ascite. Before this study, all of 30 patients had a history of variceal bleeding, and 16 patients had a normal coagulation level, 10 patients had a mildly prolonged prothrombin time (14-17 s), 4 patients had a moderately prolonged prothrombin time (18-20 s). All of 30 patients underwent upper abdomen CT enhanced scanning before this procedure, and the site, direction, and depth of splenic vein branch puncture were decided by CT images. The technology of PTSPC, procedure-related complications, and its clinical application were retrospectively analyzed. Results: PTSPC was performed successfully in 28 of 30 patients. Two cases failed because of a small intrasplenic vein. Procedure-related complications occurred in 6 patients (20.0%), which had decrease of hemoglobin concentration (15-50 g/L). Four of them needed blood transfusion. In the six patients, one patient (3.3%) with abdominal cavity hemorrhage had a serious drop of blood pressure 2 hours after procedure, whose clinical symptoms were relieved after four units of packed RBC and a great quantity of fluid were transfused. Twenty-eight patients whose PTSPC were successfully performed underwent variceal embolization, 2 of them were placed with portal vein covered stents. During a median follow-up period of 6 months

  16. Characterization of the coagulation profile in children with liver disease and extrahepatic portal vein obstruction or shunt.

    Science.gov (United States)

    Beattie, William; Magnusson, Maria; Hardikar, Winita; Monagle, Paul; Ignjatovic, Vera

    2017-03-01

    Chronic liver disease causes a disruption of procoagulant and anticoagulant factors, resulting in a fragile state, prone to increased rates of both bleeding and thrombosis. Currently, there is limited literature describing the changes observed in pediatric liver disease and extrahepatic portal vein obstruction or shunt. This study aimed to describe the changes that occur in children with chronic liver disease and extrahepatic portal vein obstruction or shunt. We measured the concentration and activity of key procoagulant and anticoagulant factors in children with liver disease, children with extrahepatic portal vein obstruction or shunt, and healthy children. Children with severe liver disease had coagulopathic changes, including either decreased concentration or activity of factor II, factor V, and factor VII. Nineteen percent (8/42) of the cohort had significant bleeding. Thrombophilic changes were also observed, including decreased concentration or activity of protein C, protein S, and antithrombin and increased concentration and activity of factor VIII and Von Willebrand factor. Similar coagulation factor changes were observed in children with extrahepatic portal vein obstruction or shunt. There was a trend toward greater changes in coagulation factor activity compared to concentration. This study provides a detailed description of the changes in both the concentration and activity of coagulation factors in pediatric liver disease and extrahepatic portal vein obstruction or shunt. Interestingly, procoagulant and anticoagulant factors were deranged in portal vein obstruction or shunt to a similar degree as in liver disease. An improved understanding of the coagulation profile in the pediatric setting will contribute to the improved management of liver disease and extrahepatic portal obstruction or shunt. PELD: pediatric end-stage liver disease score; MELD: model for end-stage liver disease score; ELISA: enzyme-linked immunosorbent assay; MCRI: Murdoch Childrens

  17. STOPDVTs: Development and testing of a clinical assessment tool to guide nursing assessment of postoperative patients for Deep Vein Thrombosis.

    Science.gov (United States)

    O'Brien, Alanna; Redley, Bernice; Wood, Beverley; Botti, Mari; Hutchinson, Anastasia F

    2018-03-01

    To develop and test a clinical tool to guide nurses' assessment of postoperative patients for Deep Vein Thrombosis. Preventing venous thromboembolism in hospitalised patients is an international patient safety priority. Despite high-level evidence for optimal venous thromboembolism prophylaxis, implementation is inconsistent and the incidence of Deep Vein Thrombosis remains high. A two-stage sequential multi-method design was used. In stage 1, the STOPDVTs tool was developed using a review of the literature and focus groups with local clinical experts. Stage 2 involved pilot testing the tool with 38 surgical nurses who conducted repeated assessments on a prospective sample of 50 postoperative orthopaedic patients. Stage 1: The focus group members who were members of the nursing leadership team agreed on eight local and systemic signs and symptoms that should be included in a nursing patient assessment tool for early Deep Vein Thrombosis. Local symptoms were pain in the limbs, calf swelling and tightness, changes in the affected limb's skin temperature. Systemic signs included in the tool were as follows: increased shortness of breath, increased respiratory and heart rates, and decreased oxygen saturation. Stage 2: The STOPDVTs tool had acceptable face and content validity, the agreement between the expert nurse and surgical nurses on assessments of individual signs and symptoms varied between 44%-94%. Surgical nurses were less likely than the expert nurse to identify signs indicative of Deep Vein Thrombosis. Despite finding the STOPDVTs clinical assessment tool was a useful guide for nursing assessment, surgical nurses often underestimated the potential importance of clinical signs. The findings reveal a gap in nursing knowledge and skill in assessing for Deep Vein Thrombosis in postoperative orthopaedic patients. This study identified a possible risk to patient safety related to under-recognition of the signs and symptoms of possible Deep Vein Thrombosis (DVT) in

  18. Anatomical and embryological considerations of renal vein abnormalities: The value of preoperative CT

    International Nuclear Information System (INIS)

    Hruby, W.; Hoelti, W.

    1986-01-01

    Renal vein abnormalities are an uncommon kind of vascular abnormality. The distribution in the general population is 1.5%-2.5% in unselected pathologic material. In 354 autopsies we have seen six cases of renal vein abnormalities; in 215 cases of major retroperitoneal surgery, seven renal vein abnormalities; and in 4,500 patients who underwent CT examinations of the retroperitoneal areas, 36 cases of atypical renal vein anatomy. The radiologist must be familiar with embryologic details to understand the development of renal vein abnormalities. The authors discuss the value of preoperative diagnosis for preventing a surgical disaster in major retroperitoneal surgery

  19. The application of bilateral femoral vein approaches in interventional treatment of deep venous thrombosis of left lower extremity

    International Nuclear Information System (INIS)

    Wang Xiuping; Liu Jian; Wang Bin; Yao Zhongqiang; Zhang Yan; Li Chen

    2011-01-01

    Objective: To investigate the feasibility of interventional catheterization with bilateral femoral vein approaches for performing the thrombolytic treatment of acute deep venous thrombosis of left lower extremity. Methods: Antegrade puncturing into the left femoral vein was carried out in eighteen patients with acute deep vein thrombosis in the left lower extremity after left iliac-femoral vein catheterization via the right femoral vein or the right jugular vein access failed. When the puncturing of the left femoral vein was successfully done and was confirmed by angiography, the guide wire was inserted into the inferior vena cava and was pulled out through the right femoral vein or right jugular vein, and a wire track was thus established. Then, retrograde insertion of the catheter was conducted along the wire from the right to the left until the catheter was placed into the left iliac-femoral vein for thrombolysis. Results: Of 18 cases,successful puncturing into the left femoral vein was achieved in 16, and an effective wire track was established between the left and right femoral veins, based on which the catheter was smoothly inserted into the left iliac-femoral vein via the right femoral vein or jugular vein. Catheter thrombolysis was employed for 3 to 14 days, the thrombus was completely dissolved and the lower extremity swelling subsided. During the course of thrombolysis, no obvious congestion or hematoma occurred at the puncturing site of the left femoral vein. Conclusion: For patients with deep vein thrombosis of left lower extremity, when left iliac-femoral vein catheterization via the right femoral vein or the right jugular vein access failed, the establishment of wire track by using bilateral femoral vein approaches for further catheterization of left iliac-femoral vein and subsequent thrombolysis is feasible in clinical practice. This technique is safe and minimally-invasive with higher success rate. (authors)

  20. The pathology of facial vein blood sampling in mice

    DEFF Research Database (Denmark)

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

    2014-01-01

    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......, and the tissue of the jaw was evaluated. Results: In the 23 mice, from which blood samples had been taken 2 days previously, 5 mice had no signs of gross pathological changes, whereas 12 mice had signs of minimal local subcutaneous bleeding and 6 mice had moderate local subcutaneous bleeding. No additional gross...... pathological changes were observed. In the 23 mice, from which blood samples had been taken 4 weeks earlier, no hemorrhage or signs of scar tissue formation could be observed. Histological slides are currently being processed (HE staining) and will be evaluated and discussed....

  1. Thrombosis of the portal vein in a miniature schnauzer.

    Science.gov (United States)

    Díaz Espiñeira, M M; Vink-Nooteboom, M; Van den Ingh, T S; Rothuizen, J

    1999-11-01

    A miniature schnauzer with a history of apathy, anorexia and jaundice was presented to the Utrecht University Clinic for Companion Animals. Abnormal laboratory findings included highly increased levels of total bile acids and alkaline phosphatase, and hyponatraemia. Abdominal ultrasonography revealed that the right side of the liver was enlarged and the left side was small, together with a thrombus in the portal vein. Biopsies from the right side of the liver demonstrated subacute to chronic active hepatitis, for which the dog was treated with prednisolone (1 mg/kg/day for four weeks). No improvement was observed and the owner requested euthanasia. At necropsy the left lobes of the liver were found to be small and firm, while the right lobes were large and soft. There were two thrombi in the portal vein. Microscopic examination revealed chronic active hepatitis and cirrhosis.

  2. Identification of arteries and veins in cerebral angiography fluoroscopic images

    Science.gov (United States)

    Andra Tache, Irina

    2017-11-01

    In the present study a new method for pixels tagging into arteries and veins classes from temporal cerebral angiography is presented. This need comes from the neurosurgeon who is evaluating the fluoroscopic angiography and the magnetic resonance images from the brain in order to locate the fistula of the patients who suffer from arterio-venous malformation. The method includes the elimination of the background pixels from a previous segmentation and the generation of the time intensity curves for each remaining pixel. The later undergo signal processing in order to extract the characteristic parameters needed for applying the k-means clustering algorithm. Some of the parameters are: the phase and the maximum amplitude extracted from the Fourier transform, the standard deviation and the mean value. The tagged classes are represented into images which then are re-classified by an expert into artery and vein pixels.

  3. Hepatocellular carcinoma with cavernous transformation of the protal vein

    Energy Technology Data Exchange (ETDEWEB)

    Seo, Heung Suk; Lee, Seung Ro; Hahm, Chang Kok [Hanyang University College of Medicine, Seoul (Korea, Republic of)

    1985-10-15

    Twenty cases of hepatocellular carcinoma were examined by selective celiac and superior mesenteric arteriography. Obstruction of the main portal vein due to tumor thrombus was revealed in 7 cases and 3 of these cases had cavernous transformation of the portal vein (CTPV). The authors intended in this study to evaluate CTPV group and non-CTPV group clinically and radiologically. The results obtained are as follows: 1. The duration of illness was shorter in CTPV group than non- CTPV group. 2. There was no significant difference in tumor size between two groups ,and main portion of tumor was located in the right lobe in both groups. 3. Arterio portal shunt was present in 2 of 4 cases in non-CTPV group, but was no present at all in CRPV groups. 5. There wa no significant difference in blood chemistry between two groups. 6. CTPV may play an important role maintain the hepatic blood flow.

  4. Varicose vein disease in children with klippel-trenaunay syndrome

    Directory of Open Access Journals (Sweden)

    Yu.O. Syniachenko

    2017-02-01

    Full Text Available The article presents a review of the literature, which describes the clinical picture and diagnosis of varicose vein disease in Klippel-Trenaunay syndrome, methods of treatment with intravenous and transcutaneous laser coagulation, endovenous radioablation, foam sclerotherapy of vessels and venectomy. There are underlined genetic defects in the genesis of the disease, the role of pro-inflammatory and immunoregulatory imbalance of cytokines, growth factors, cell adhesion molecules, matrix metalloproteinases etс. in pathogenic constructions of venous damage. This congenital vascular patho­logy is not as rare as it is commonly thought, and the patients suffering from this pathology since childhood are often being unsuccessfully treated in adulthood for varicose veins, elephantiasis and recurrent phlebothrombosis, when diagnosis of Klippel-Trenaunay syndrome have never previously established. This literature review has to attract the attention to the problem under discussion not only of pediatricians, but also of therapeutists and vascular surgeons-phlebologists.

  5. 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.)

  6. Imaging and Radiological Interventions of Portal Vein Thrombosis

    Energy Technology Data Exchange (ETDEWEB)

    Hidajat, N.; Stobbe, H.; Griesshaber, V.; Felix, R.; Schroder, R.J. [Academic Teaching Hospital of the Univ. of Hannover (Germany). Central Dept. of Diagnostic and Interventional Radiology, Hospital Peine

    2005-07-01

    Portal vein thrombosis (PVT) is diagnosed by imaging methods. Once diagnosed by means of ultrasound, Doppler ultrasound can be performed to distinguish between a benign and malignant thrombus. If further information is required, magnetic resonance angiography or contrast-enhanced computed tomography is the next step, and if these tests are unsatisfactory, digital subtraction angiography should be performed. Many papers have been published dealing with alternative methods of treating PVT, but the material is fairly heterogeneous. In symptomatic non-cavernomatous PVT, recanalization using local methods is recommended by many authors. Implantation of transjugular intrahepatic portosystemic shunt is helpful in cirrhotic patients with non-cavernomatous PVT in reducing portal pressure and in diminishing the risk of re-thrombosis. In non-cirrhotic patients with recent PVT, some authors recommend anticoagulation alone. In chronic thrombotic occlusion of the portal vein, local measures may be implemented if refractory symptoms of portal hypertension are evident.

  7. Tumoural portal vein thrombosis. Enhancement with MnDPDP

    International Nuclear Information System (INIS)

    Marti-Bonmati, L.; Lonjedo, E.; Mathieu, D.; Coffin, C.; Poyatos, C.; Anglade, M.C.

    1997-01-01

    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)

  8. Complications associated with radiofrequency ablation of pulmonary veins.

    Science.gov (United States)

    Madrid Pérez, J M; García Barquín, P M; Villanueva Marcos, A J; García Bolao, J I; Bastarrika Alemañ, G

    Radiofrequency ablation is an efficacious alternative in patients with symptomatic atrial fibrillation who do not respond to or are intolerant to at least one class I or class III antiarrhythmic drug. Although radiofrequency ablation is a safe procedure, complications can occur. Depending on the location, these complications can be classified into those that affect the pulmonary veins themselves, cardiac complications, extracardiac intrathoracic complications, remote complications, and those that result from vascular access. The most common complications are hematomas, arteriovenous fistulas, and pseudoaneurysms at the puncture site. Some complications are benign and transient, such as gastroparesis or diaphragmatic elevation, whereas others are potentially fatal, such as cardiac tamponade. Radiologists must be familiar with the complications that can occur secondary to pulmonary vein ablation to ensure early diagnosis and treatment. Copyright © 2016 SERAM. Publicado por Elsevier España, S.L.U. All rights reserved.

  9. 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

  10. 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. © 2014 Wiley Periodicals, Inc.

  11. Pregnancy causes diminished myogenic tone and outward hypotrophic remodeling of the cerebral vein of Galen.

    Science.gov (United States)

    van der Wijk, Anne-Eva; Schreurs, Malou P H; Cipolla, Marilyn J

    2013-04-01

    Pregnancy increases the risk of several complications associated with the cerebral veins, including thrombosis and hemorrhage. In contrast to the cerebral arteries and arterioles, few studies have focused on the effect of pregnancy on the cerebral venous side. Here, we investigated for the first time the effect of pregnancy on the function and structure of the cerebral vein of Galen in rats. Our major finding was that cerebral veins from late-pregnant (LP, n=11) rats had larger lumen diameters and thinner walls than veins from nonpregnant (NP, n=13) rats, indicating that pregnancy caused outward hypotrophic remodeling of the vein of Galen. Moreover, veins from NP animals had a small amount of myogenic tone at 10 mm Hg (3.9±1.0%) that was diminished in veins during pregnancy (0.8±0.3%; Ppregnancy. Using immunohistochemistry, we show that the vein of Galen receives perivascular innervation, and that serotonergic innervation of cerebral veins is significantly higher in veins from LP animals. Outward hypotrophic remodeling and diminished tone of cerebral veins during pregnancy may contribute to the development of venous pathology through elevated wall tension and wall stress, and possibly by promoting venous blood stasis.

  12. Clinicopathological comparisons of open vein harvesting and endoscopic vein harvesting in coronary artery bypass grafting patients in Mashhad.

    Science.gov (United States)

    Amouzeshi, Ahmad; Teshnisi, Mohamad Abbassi; Zirak, Nahid; Shamloo, Alireza Sepehri; Hoseinikhah, Hamid; Alizadeh, Behzad; Moeinipour, Aliasghar

    2016-01-01

    Harvesting of the greater saphenous vein is almost an inevitable part of coronary artery bypass grafting (CABG) operations, and it is done by two main techniques, i.e., conventional or open vein harvesting (OVH) and the minimally-invasive endoscopic vein harvesting (EVH). This study aimed to compare these two techniques in off-pump CABG procedures with respect to clinical and pathological outcomes. This cohort study was conducted on CABG candidates during a one-year period from October 2013 through September 2014 in the Department of Cardiac Surgery at Mashhad University of Medical Sciences. Eighty-seven patients voluntarily underwent EVH, and another 86 patients matched for age, gender, and other cardiovascular risk factors were selected for OVH. They were followed up for six weeks, and the main outcome measures were infections of the wound, pain, duration of hospital stay, and the costs of hospitalization. Paired sample t-test, independent t-test, or their non-parametric equivalents and the chi-squared test were used by SPSS version 17.0 for data analysis. The mean duration of time for vein harvesting was shorter in the EVH group (p < 0.001), and the pain score was lower (p = 0.04). No infections occurred at the site of the wound. The length of hospital stay was not significantly different for the two groups (OVH versus EVH: 8.5 ± 3.3 versus 8.4 ± 3.2 days; p-value: 0.08). Hospitalization costs were significantly higher in the EVH group (OVH versus EVH: 5.8 ± 4.7 versus 7.3 ± 2.0 million Tomman; p-value: 0.008), yet no difference was diagnosed with respect to endothelial damage in the vein grafts harvested by the EVH and OVH techniques. EVH is considered as a minimally invasive and safe vein harvesting technique in our Center, and it can reduce the harvesting time and post-operative pain. In addition, its efficiency was similar to that of OVH.

  13. Percutaneous unilateral biliary metallic stent placement in patients with malignant obstruction of the biliary hila and contralateral portal vein steno-occlusion

    Energy Technology Data Exchange (ETDEWEB)

    Son, Rak Chae; Gwon, Dong Il; Ko, Heung Kyu; Kim, Jong Woo; Ko, Gi Young [Dept. of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of)

    2015-06-15

    To investigate the outcomes of percutaneous unilateral metallic stent placement in patients with a malignant obstruction of the biliary hila and a contralateral portal vein steno-occlusion. Sixty patients with a malignant hilar obstruction and unilobar portal vein steno-occlusion caused by tumor invasion or preoperative portal vein embolization were enrolled in this retrospective study from October 2010 to October 2013. All patients were treated with percutaneous placement of a biliary metallic stent, including expanded polytetrafluoroethylene (ePTFE)-covered stents in 27 patients and uncovered stents in 33 patients. A total of 70 stents were successfully placed in 60 patients. Procedural-related minor complications, including self-limiting hemobilia (n = 2) and cholangitis (n = 4) occurred in six (10%) patients. Acute cholecystitis occurred in two patients. Successful internal drainage was achieved in 54 (90%) of the 60 patients. According to a Kaplan-Meier analysis, median survival time was 210 days (95% confidence interval [CI], 135-284 days), and median stent patency time was 133 days (95% CI, 94-171 days). No significant difference in stent patency was observed between covered and uncovered stents (p = 0.646). Stent dysfunction occurred in 16 (29.6%) of 54 patients after a mean of 159 days (range, 65-321 days). Unilateral placement of ePTFE-covered and uncovered stents in the hepatic lobe with a patent portal vein is a safe and effective method for palliative treatment of patients with a contralateral portal vein steno-occlusion caused by an advanced hilar malignancy or portal vein embolization. No significant difference in stent patency was detected between covered and uncovered metallic stents.

  14. 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...... than its blood flow. This is probably due to decreased filtration fraction and filtered sodium with subsequent reduction in absolute tubular re-absorption of sodium ions....

  15. Vein-type and similar uranium deposits of Argentina

    International Nuclear Information System (INIS)

    Stipanicic, P.

    1982-01-01

    Some vein-type and similar uranium deposits and occurrences are briefly described to show different models identified in Argentina. Practically all of them were formerly thought to be related to hydrothermal-magmatic processes, but at present few are considered to be so; some are classified as typically exogenous and opinions differ about the genesis of the remaining ones, especially because of a lack of sufficient research on the matter since this group of accumulations only contributes less than 10% to the entire uranium resources of Argentina. The typical vein-type ore bodies are small (including less than 200t U) with grades varying from 0.1 to near 1%U. Other deposits, resolved as stockworks, could be from small to medium size (more than 200t U to 2000t U) with a uranium content from 0.7 to 0.03%, respectively. The mineralogical associations are variable, from complex ones in veins considered as magmatic-endogenous (with U, Ni, Co, Pb, Cu, Zn, etc.) to very simple ones in the exogenetic accumulations, which only comprise uranium minerals. The paragenetic studies available are not complete enough to define the possible relation of uranium with the other metals in the complex ores. The age of the mineralization has been defined in some cases, but not in others. There are examples of mineralizing processes occurring from Palaeozoic to very recent times. Some of the uranium deposits mentioned here have been exploited in the past; one of them will be re-opened very shortly; and a new one will be put into operation in 1981. The geological composition of Argentina is not favourable for uranium deposits related to the Proterozoic unconformity, and the best possibilities for finding interesting accumulations of vein and similar type are in the large Hercynian granitic environments which have outcrops that cover more than 150,000km 2 (Pampean Hills and North Patagonian Massif). (author)

  16. Menetrier's disease accompanied thrombosis of the iiac vein

    Energy Technology Data Exchange (ETDEWEB)

    Kang, Hyun Il; Lee, Young Joong; Park, Choong Ki; Yoon, Jong Sup; Park, Young E [Hallym University College of Medicine, Chuncheon (Korea, Republic of)

    1986-08-15

    Menetrier's disease is a rare cause of thickened gastric wall. The differential diagnosis of diffuse gastric wall thickening such as lymphoma and adenocarcinoma should be expanded to include Menetrier's disease. The authors experienced a case of Menetrier's disease accompanied deep vein thrombosis, which was proved by operation and pathology. We carried out double contrast upper G-I series and computed tomography, and report with review of literatures.

  17. Global search demand for varicose vein information on the internet.

    Science.gov (United States)

    El-Sheikha, Joseph

    2015-09-01

    Changes in internet search trends can provide healthcare professionals detailed information on prevalence of disease and symptoms. Chronic venous disease, more commonly known as varicose veins, is a common symptomatic disease among the adult population. This study aims to measure the change in global search demand for varicose vein information using Google over the past 8 years. The Google Trends instrument was used to measure the change in demand for the use of the local name for varicose veins in several countries across the world between January 2006 and December 2012. The measurements were normalised onto a scale relative to the largest volume of search requests received during a designated time and geographical location. Comparison of national levels of private healthcare and healthcare spending per capita to search demand was also undertaken using Organisation for Economic Co-operation and development economic measurements. Global interest has increased significantly, with linear regression demonstrating a 3.72% year-on-year increase in demand over the 8-year time period (r(2 )= 0.385, p demand significantly increased in the northern hemisphere (p demand compared to cooler winter months (demand (r(2 )= 0.120 p = 0.306). Healthcare spending per capita did not relate to search demand (r(2 )= 0.450 p = 0.077). There is increasing demand for information about varicose veins on the internet, especially during the warmer months of the year. Online search demand does not appear to be related to healthcare spending. © The Author(s) 2014.

  18. Greater saphenous vein anomaly and aneurysm with subsequent pulmonary embolism

    OpenAIRE

    Ma, Truong; Kornbau, Craig

    2017-01-01

    Abstract Venous aneurysms often present as painful masses. They can present either in the deep or superficial venous system. Deep venous system aneurysms have a greater risk of thromboembolism. Though rare, there have been case reports of superficial aneurysms and thrombus causing significant morbidity such as pulmonary embolism. We present a case of an anomalous greater saphenous vein connection with an aneurysm and thrombus resulting in a pulmonary embolism. This is the only reported case o...

  19. Benign Angiomyolipoma with Renal Vein Invasion: A Case Report

    International Nuclear Information System (INIS)

    Kim, Mi Seon; Park, Soo Youn; Hwang, Seong Su

    2009-01-01

    Angiomyolipomas are the most common type of benign renal tumors and are characterized by a mixture of mature adipose tissue, sheet of smooth muscle, and thick-walled blood vessels of various proportions. Several cases of angiomyolipoma with partial malignant transformation invading the adjacent structure and lymph node have been reported. On the other hand, benign angiomyolipomas invading the adjacent structures has been rarely reported. We report a case of a benign angiomyolipoma with renal vein invasion

  20. Congenital absence of the portal vein in a boy

    International Nuclear Information System (INIS)

    Kohda, E.; Hiramatsu, K.; Saeki, Morihiro; Nakano, Miwako; Masaki, Hidekazu; Ogawa, Kenji; Nirasawa, Mali

    1999-01-01

    Congenital absence of the portal vein (CAPV) is a malformation that is generally thought to be limited to females. We encountered an 11-year-old boy with this malformation. In 17 previously reported cases of CAPV, 2 were male. Three male patients, including our case, were Abernethy type Ib malformation. They had no associated liver tumour and two had no additional congenital abnormality. Conversely, 13 of the 15 female patients had congenital abnormalities and 6 had liver mass lesions. (orig.)

  1. Neointima development in externally stented saphenous vein grafts

    Directory of Open Access Journals (Sweden)

    Przemysław Węglarz

    2016-11-01

    Full Text Available Introduction : The main limitation of coronary artery bypass grafting (CABG is rapid neointimal hyperplasia leading to graft failure. Aim : To assess plaque formation in saphenous vein grafts (SVG covered by an external Dacron stent in comparison with the classical technique. Material and methods : In the study group vein grafts covered by external stent mesh made of Dacron were implanted. An intravascular ultrasonography (IVUS study was performed in 35 aorto-coronary SVG covered by an external Dacron stent and in 64 normal SVG during the first year after CABG. In each SVG 25 mm of good quality IVUS image, volumes of lumen, plaque (neointima, outer border of the vein graft (external SVG and adventitia were calculated in three time periods: 0–130 days, 130–260 days and 260–390 days. Results : Between the first and second time period, lumen volume (mm3 was reduced from 10.33 ±4.4, to 6.80 ±2.23 in the second period and 5.69 ±1.26 in the third one. This effect was much less marked in normal grafts. The corresponding lumen volume (mm3 was: 10.90 ±3.9, 9.15 ±2.94 and 8.92 ±2.93 in consecutive time periods. Plaque volume (mm3 did not change in control grafts during the course of the study, but it increased very significantly in stented grafts from 0.86 ±1.24 in the first period to 2.70 ±1.58 in the second and 3.29 ±2.66 in the third one. Conclusions : The experimental technique of implanting SVG covered with an external elastic Dacron stent seems to be inferior to traditional ones. This is probably due to the more complicated process of vein implantation and higher micro-injury occurrence during the surgery.

  2. Hydrothermal uranium vein deposits in Marysvale volcanic field, Utah

    International Nuclear Information System (INIS)

    Rasmussen, J.D.; Cunningham, C.G.; Steven, T.A.; Rye, R.O.; Romberger, S.B.

    1984-01-01

    Hydrothermal uranium veins are exposed over a 300 m (980 ft) vertical range in mines of the Central Mining area, near Marysvale, Utah. They cut 23 Ma quartz monzonite, 21 Ma granite, and 19 Ma rhyolite ash-flow tuff. The veins formed 18-19 Ma, in an area 1 km (0.6 mi) across, above the center of a composite magma chamber at least 12 x 6 km across that fed a sequence of 21-14 Ma hypabyssal granitic stocks, and rhyolitic lava flows, ash-flow tuffs, and volcanic domes. Intrusive pressure uplifted and fractured the roof; molybdenite-bearing, uranium-rich glassy dikes were intruded; and a breccia pipe and uranium-bearing veins were formed. The veins appear to have been deposited near the surface above a concealed rhyolite stock, where they filled high-angle fault zones and flat-lying to concave-downward pull-apart fractures. Low pH and fO 2 hydrothermal fluids at temperatures near 200 0 C (392 0 F) permeated the fractured rocks; these fluids were rich in fluorine and potassium, and contained uranium as uranous-fluoride complexes. Fluid-wall rock interaction increased fluid pH, causing precipitation of uranium minerals. At the deepest exposed levels, wall rocks were altered to kaolinite and sericite, and uraninite, coffinite, jordisite, fluorite, molybdenite, quartz, and pyrite (with delta 34 S near zero per mil) were deposited. The fluids were progressively oxidized higher in the system; iron in the wall rocks was oxidized to hematite, and sooty uraninite and umohoite were deposited

  3. Aspects of crack-seal vein system evolution

    OpenAIRE

    Virgo, Simon Matthias

    2015-01-01

    This thesis focuses on the evolution of crack-seal vein systems under changing stress conditions. Thecharacteristics of these highly complex systems are explored in extensive field studies on the Jabal Akhdar(Oman Mountains), an exhumed high-pressure cell with a multiphase deformation history. Theimpact of mechanical heterogeneity on the fracture behavior and structure development in crack-sealvein systems is explored in several numerical studies facilitating the Discrete Element Method (DEM)...

  4. A Rare Complication of Acute Appendicitis: Superior Mesenteric Vein Thrombosis

    Directory of Open Access Journals (Sweden)

    Hendra Koncoro

    2016-12-01

    Full Text Available Superior mesenteric vein (SMV thrombosis caused by acute appendicitis is quite rare nowadays. These conditions occurs secondary to infection in the region drained by the portal venous system. In this case, we report a successfully treated case of SMV thrombosis and liver abscess associated with appendicitis with antibiotics and anticoagulant.Early diagnosis and prompt treatment are basic to a favorable clinical course.

  5. Deposits formed by ascending vein water (3 type)

    International Nuclear Information System (INIS)

    Komarova, G.V.

    1980-01-01

    Deposits formed by ascending vein waters (3 type), are considered using uranium-bitumen deposit in red-coloured continental sediments of Permo-Triassic as an example. Geological-structural and hydrogeological conditions of mineralization localization and conditions of deposit formation are discussed. Mineralogic-geochemical features and morphology of ore bodies are characterized. Attention is paid to the problem of epigenetic zone in ore-containing rocks and stages of its formation [ru

  6. Iliac Vein Compression Syndrome due to Bladder Distention Caused by Urethral Calculi

    Directory of Open Access Journals (Sweden)

    Akiko Ikegami

    2015-01-01

    Full Text Available We report a rare case of iliac vein compression syndrome caused by urethral calculus. A 71-year-old man had a history of urethral stenosis. He complained of bilateral leg edema and dysuria for 1 week. Physical examination revealed bilateral distention of the superficial epigastric veins, so obstruction of both common iliac veins or the inferior vena cava was suspected. Plain abdominal computed tomography showed a calculus in the pendulous urethra, distention of the bladder (as well as the right renal pelvis and ureter, and compression of the bilateral common iliac veins by the distended bladder. Iliac vein compression syndrome was diagnosed. Bilateral iliac vein compression due to bladder distention (secondary to neurogenic bladder, benign prostatic hyperplasia, or urethral calculus as in this case is an infrequent cause of acute bilateral leg edema. Detecting distention of the superficial epigastric veins provides a clue for diagnosis of this syndrome.

  7. Near-infrared image formation and processing for the extraction of hand veins

    Science.gov (United States)

    Bouzida, Nabila; Hakim Bendada, Abdel; Maldague, Xavier P.

    2010-10-01

    The main objective of this work is to extract the hand vein network using a non-invasive technique in the near-infrared region (NIR). The visualization of the veins is based on a relevant feature of the blood in relation with certain wavelengths of the electromagnetic spectrum. In the present paper, we first introduce the image formation in the NIR spectral band. Then, the acquisition system will be presented as well as the method used for the image processing in order to extract the vein signature. Extractions of this pattern on the finger, on the wrist and on the dorsal hand are achieved after exposing the hand to an optical stimulation by reflection or transmission of light. We present meaningful results of the extracted vein pattern demonstrating the utility of the method for a clinical application like the diagnosis of vein disease, of primitive varicose vein and also for applications in vein biometrics.

  8. Convolutional Neural Network-Based Finger-Vein Recognition Using NIR Image Sensors.

    Science.gov (United States)

    Hong, Hyung Gil; Lee, Min Beom; Park, Kang Ryoung

    2017-06-06

    Conventional finger-vein recognition systems perform recognition based on the finger-vein lines extracted from the input images or image enhancement, and texture feature extraction from the finger-vein images. In these cases, however, the inaccurate detection of finger-vein lines lowers the recognition accuracy. In the case of texture feature extraction, the developer must experimentally decide on a form of the optimal filter for extraction considering the characteristics of the image database. To address this problem, this research proposes a finger-vein recognition method that is robust to various database types and environmental changes based on the convolutional neural network (CNN). In the experiments using the two finger-vein databases constructed in this research and the SDUMLA-HMT finger-vein database, which is an open database, the method proposed in this research showed a better performance compared to the conventional methods.

  9. Additional Muscle Slip of Bicipital Aponeurosis and its Anomalous Relationship with the Median Cubital Vein

    Directory of Open Access Journals (Sweden)

    Nandini Bhat

    2017-03-01

    Full Text Available The cubital region of the arm is a common site for recording blood pressure, taking blood for analysis and administering intravenous therapy and blood transfusions. During the routine dissection of a 70-year-old male cadaver at the Kasturba Medical College, Manipal, Karnataka, India, in 2015, it was observed that the aponeurotic insertion of the biceps brachii muscle divided into two slips. The medial slip fused normally with the deep fascia of the forearm, while flexor carpi radialis muscle fibres originated from the lateral slip. There was also a single vein in the forearm, the cephalic vein, which bifurcated to form the median cubital vein and the cephalic vein proper. The median cubital vein, further reinforced by the radial vein, passed deep to the two slips of the bicipital aponeurosis and then continued as the basilic vein. During venepuncture, medical practitioners should be aware of potential cubital fossa variations which could lead to nerve entrapment syndromes.

  10. Novel Percutaneous Radiofrequency Ablation of Portal Vein Tumor Thrombus: Safety and Feasibility

    Energy Technology Data Exchange (ETDEWEB)

    Mizandari, Malkhaz [High Technology Medical Center, Tbilisi State Medical University (Georgia); Ao, Guokun [The 309 Hospital of People' s Liberation Army, Department on Oncology (China); Zhang Yaojun; Feng Xi [Imperial College London, Department of Surgery and Cancer (United Kingdom); Shen Qiang [The First Minimally Invasive Department of Eastern Hepatobiliary Surgery Hospital (China); Chen Minshan [Cancer Centre of Sun Yat-Sen University, Department of Hepatobiliary Surgery (China); Lau, Wan Yee [Chinese University of Hong Kong, Department of Surgery, Faculty of Medicine (Hong Kong); Nicholls, Joanna; Jiao Long; Habib, Nagy, E-mail: nagy.habib@imperial.ac.uk [Imperial College London, Department of Surgery and Cancer (United Kingdom)

    2013-02-15

    We report our experience of the safety of partial recanalization of the portal vein using a novel endovascular radiofrequency (RF) catheter for portal vein tumor thrombosis. Six patients with liver cancer and tumor thrombus in the portal vein underwent percutaneous intravascular radiofrequency ablation (RFA) using an endovascular bipolar RF device. A 0.035-inch guidewire was introduced into a tributary of the portal vein and through which a 5G guide catheter was introduced into the main portal vein. After manipulation of the guide catheter over the thrombus under digital subtraction angiography, the endovascular RF device was inserted and activated around the thrombus. There were no observed technique specific complications, such as hemorrhage, vessel perforation, or infection. Post-RFA portography showed partial recanalization of portal vein. RFA of portal vein tumor thrombus in patients with hepatocellular carcinoma is technically feasible and warrants further investigation to assess efficacy compared with current recanalization techniques.

  11. REcanalisation and Balloon-Oriented Puncture for Re-Insertion of Dialysis Catheter in Nonpatent Central Veins (REBORN)

    International Nuclear Information System (INIS)

    Too, Chow Wei; Sayani, Raza; Lim, Elvin Yuan Ting; Leong, Sum; Gogna, Apoorva; Teo, Terence K.

    2016-01-01

    PurposeTo describe a technique involving REcanalisation and Balloon-Oriented puncture for Re-insertion of dialysis catheter in Nonpatent central veins (REBORN) and to report long-term results.Materials and MethodsThis is a retrospective study of ten subjects in whom dialysis catheters were inserted using the REBORN technique from March 2012 to October 2014 and followed up till April 2016. Data on the duration of catheter usage, complications and reasons for removal were obtained. Seven patients had partially occluded lower internal jugular veins (IJV) recanalised in an antegrade fashion via a more cranial puncture. The balloon was then inflated at usual puncture site with an 18G needle. The collapsed balloon was cannulated with a guide wire, and both balloon and guide wire were advanced together into the superior vena cava. This was followed by tunnelled catheter placement using standard techniques. Two patients had catheters placed in the subclavian vein using a similar antegrade technique, and one patient had catheter placed via the left IJV following retrograde recanalisation from a right femoral puncture.ResultsMean duration of catheter use was 278 days (range 32–503). Three catheters were removed due to matured arteriovenous accesses. Four patients had successful catheter change over the same subcutaneous track due to catheter malfunction. One catheter was removed after 7 months because of sepsis. No complications were reported.ConclusionThe REBORN technique allows for the preservation of central veins for future haemodialysis access, which can be challenging in patients requiring long-term dialysis.

  12. REcanalisation and Balloon-Oriented Puncture for Re-Insertion of Dialysis Catheter in Nonpatent Central Veins (REBORN)

    Energy Technology Data Exchange (ETDEWEB)

    Too, Chow Wei, E-mail: toochowwei@gmail.com [Singapore General Hospital (Singapore); Sayani, Raza [Aga Khan University Hospital (Pakistan); Lim, Elvin Yuan Ting; Leong, Sum; Gogna, Apoorva [Singapore General Hospital (Singapore); Teo, Terence K. [Mount Elizabeth Novena Hospital (Singapore)

    2016-08-15

    PurposeTo describe a technique involving REcanalisation and Balloon-Oriented puncture for Re-insertion of dialysis catheter in Nonpatent central veins (REBORN) and to report long-term results.Materials and MethodsThis is a retrospective study of ten subjects in whom dialysis catheters were inserted using the REBORN technique from March 2012 to October 2014 and followed up till April 2016. Data on the duration of catheter usage, complications and reasons for removal were obtained. Seven patients had partially occluded lower internal jugular veins (IJV) recanalised in an antegrade fashion via a more cranial puncture. The balloon was then inflated at usual puncture site with an 18G needle. The collapsed balloon was cannulated with a guide wire, and both balloon and guide wire were advanced together into the superior vena cava. This was followed by tunnelled catheter placement using standard techniques. Two patients had catheters placed in the subclavian vein using a similar antegrade technique, and one patient had catheter placed via the left IJV following retrograde recanalisation from a right femoral puncture.ResultsMean duration of catheter use was 278 days (range 32–503). Three catheters were removed due to matured arteriovenous accesses. Four patients had successful catheter change over the same subcutaneous track due to catheter malfunction. One catheter was removed after 7 months because of sepsis. No complications were reported.ConclusionThe REBORN technique allows for the preservation of central veins for future haemodialysis access, which can be challenging in patients requiring long-term dialysis.

  13. A dynamical system that describes vein graft adaptation and failure.

    Science.gov (United States)

    Garbey, Marc; Berceli, Scott A

    2013-11-07

    Adaptation of vein bypass grafts to the mechanical stresses imposed by the arterial circulation is thought to be the primary determinant for lesion development, yet an understanding of how the various forces dictate local wall remodeling is lacking. We develop a dynamical system that summarizes the complex interplay between the mechanical environment and cell/matrix kinetics, ultimately dictating changes in the vein graft architecture. Based on a systematic mapping of the parameter space, three general remodeling response patterns are observed: (1) shear stabilized intimal thickening, (2) tension induced wall thinning and lumen expansion, and (3) tension stabilized wall thickening. Notable is our observation that the integration of multiple feedback mechanisms leads to a variety of non-linear responses that would be unanticipated by an analysis of each system component independently. This dynamic analysis supports the clinical observation that the majority of vein grafts proceed along an adaptive trajectory, where grafts dilate and mildly thicken in response to the increased tension and shear, but a small portion of the grafts demonstrate a maladaptive phenotype, where progressive inward remodeling and accentuated wall thickening lead to graft failure. © 2013 The Authors. Published by Elsevier Ltd. All rights reserved.

  14. An unusual case of Y-shaped right renal vein.

    Science.gov (United States)

    Lavy, M; Martin, L; Eouzan, D; Turco, C; Heyd, B; Mantion, G; Parratte, B; Tatu, L

    2015-01-01

    Vascular renal anomalies are frequent, multiple and well described and result from errors in vessel embryogenesis between the 6th and 10th week of gestation. Historically, variations are described in anatomic dissection and currently mostly in image interpretation. We report an anatomic variation concerning the right renal vein which, to our knowledge, has never been described in the literature either by dissection or by radiological examination. This variation was discovered during the routine dissection of an embalmed male body. It consists of a Y-shaped right renal vein and is associated with multiple retroperitoneal variations: a bilateral accessory renal artery, a trident ending of the right renal artery and a left testicular vein variation. Venous and arterial renal anatomy and its variations are fundamentally important in renal surgery, especially concerning living donor renal grafts. These variations may be diagnosed thanks to injected tomodensitometry which has a good sensitivity and specificity for anomalies. Preoperative diagnosis of an anatomic vascular renal variation may reduce morbidity during surgery, which is why precise examination of injected tomography should be mandatory.

  15. THE SIGNIFICANCE OF PATTERN ERG IN CENTRAL VEIN OCCLUSION

    Directory of Open Access Journals (Sweden)

    Saša Novak

    2004-12-01

    Full Text Available Pattern electroretinogram (PERG findings were analysed in 30 patients with central retinal vein occlusion. Latency and amplitude values of PERG waves were compared with the results obtained in 30 healthy individuals after sample randomisation. In 15 cases with „hemorrhagic type” occlusion of the central retinal vein significantly reduced N1-P1 wave amplitude was noted (0,369 mV, related to „exudative“ disease type (0,557 mV, as well as to the control group of examines (0,782 mV. PERG was described as the sensitive method and important indicator in damage assessment, ie. ischemia in the ganglional cell layer in central retinal vein occlusion. Ischemia increases anoxia, which influences not only the axons but also the enzymatic and transport processes within the cell bodies, dendrites, axons and axonal terminals. Slowing down of the fast phase of axoplasmatic transport in the axons in ischemic damage blocked transmission impulses which could be evident through different degrees of PERG wave amplitude reduction. With this method the patients can be selected in whom due to severe retinal ischemia there is the risk of neovascular glaucomma and maculopathy, which is the absolute indication for panlaser-photocoagulation.

  16. [Underlying conditions associated with the occurrence of retinal vein occlusion].

    Science.gov (United States)

    Tilleul, J; Glacet-Bernard, A; Coscas, G; Soubrane, G; Souied, E H

    2011-05-01

    Conventional risk factors for retinal vein occlusion (RVO) are well established through large epidemiological studies, but triggering factors remain poorly known. A prospective observational study through a questionnaire was completed between January and October 2009 by patients with RVO and controls. Sixty-one patients, including 42 central retinal vein occlusions (CRVO) and 19 branch vein occlusions (BRVO) as well as 118 controls were included. Of the CRVO patients, 77% discovered visual loss upon awakening in contrast to only 33% of BRVO patients. The comparison between RVO and controls showed a higher proportion in the RVO group for (in order of the highest risk): migraine headache (CRVO, 21 %; BRVO, 47 %; controls, 13 %; p=0.008), hypertension (CRVO, 52%; BRVO, 63%; controls, 37%; p=0.012), glaucoma (CRVO, 33%; BRVO, 22%; controls, 16%; p=0.034), antiplatelet or anticoagulant medication (CRVO, 42%; BRVO, 33%; controls, 26%; p=0.074), hyperlipidemia, ocular trauma, sudden deafness, or vertigo. The prevalence was similar in both groups for body mass index, history of phlebitis or peptic ulcer, smoking habits, stress, fasting, dehydration, vasodilator intake, and altitude stay. In addition to the already known risk factors, this study underlines certain underlying conditions or circumstances related to the onset of RVO, such as migraine. In CRVO, three-quarters of the patients on average discovered visual loss upon awakening, which may indicate that nocturnal events may play a significant role in the pathogenesis of the occlusion. Copyright © 2011 Elsevier Masson SAS. All rights reserved.

  17. Finger vein recognition based on the hyperinformation feature

    Science.gov (United States)

    Xi, Xiaoming; Yang, Gongping; Yin, Yilong; Yang, Lu

    2014-01-01

    The finger vein is a promising biometric pattern for personal identification due to its advantages over other existing biometrics. In finger vein recognition, feature extraction is a critical step, and many feature extraction methods have been proposed to extract the gray, texture, or shape of the finger vein. We treat them as low-level features and present a high-level feature extraction framework. Under this framework, base attribute is first defined to represent the characteristics of a certain subcategory of a subject. Then, for an image, the correlation coefficient is used for constructing the high-level feature, which reflects the correlation between this image and all base attributes. Since the high-level feature can reveal characteristics of more subcategories and contain more discriminative information, we call it hyperinformation feature (HIF). Compared with low-level features, which only represent the characteristics of one subcategory, HIF is more powerful and robust. In order to demonstrate the potential of the proposed framework, we provide a case study to extract HIF. We conduct comprehensive experiments to show the generality of the proposed framework and the efficiency of HIF on our databases, respectively. Experimental results show that HIF significantly outperforms the low-level features.

  18. Cryptosystem Based On Finger Vein Patterns Using Vas Algorithm

    Directory of Open Access Journals (Sweden)

    G.Kanimozhi

    2015-08-01

    Full Text Available Cryptosystems based on biometrics authentication is developing areas in the field of modernize security schemes. Elastic distortion of fingerprints is one of the major causes for false non-match. While this problem affects all fingerprint identification function it is especially dangerous in opposite identification function such as note list and reduplication function. In such function malicious possessors may purposely distort their fingerprints to evade identification. Distortion rectification or equivalently distortion field estimation is viewed as a regression problem where the input is a distorted fingerprint and the output is the distortion field. The current document deals with the application of finger veins pattern as an approach for possessor confirmation and encryption key generation. The design of the optical imprison scheme by near infrared is described. We propose a step for the location of the vein crossing points and the quantification of the angles between the vein-branches this information is used to generate a personal key that allows the possessor to encrypt information after the confirmation is approved. In order to demonstrate the potential of the suggested approach and model of figure encryption is developed. All action biometric imprison figure presetting key generation and figure encryption are performed on the identical hidden platform adding an important portability and diminishing the execution time.

  19. Fabrication of subcutaneous veins phantom for vessel visualization system

    Science.gov (United States)

    Cheng, Kai; Narita, Kazuyuki; Morita, Yusuke; Nakamachi, Eiji; Honda, Norihiro; Awazu, Kunio

    2013-09-01

    The technique of subcutaneous veins imaging by using NIR (Near Infrared Radiation) is widely used in medical applications, such as the intravenous injection and the blood sampling. In the previous study, an automatic 3D blood vessel search and automatic blood sampling system was newly developed. In order to validate this NIR imaging system, we adopted the subcutaneous vein in the human arm and its artificial phantom, which imitate the human fat and blood vessel. The human skin and subcutaneous vein is characterized as the uncertainty object, which has the individual specificity, non-accurate depth information, non-steady state and hardly to be fixed in the examination apparatus. On the other hand, the conventional phantom was quite distinct from the human's characteristics, such as the non-multilayer structure, disagreement of optical property. In this study, we develop a multilayer phantom, which is quite similar with human skin, for improvement of NIR detection system evaluation. The phantom consists of three layers, such as the epidermis layer, the dermis layer and the subcutaneous fat layer. In subcutaneous fat layer, we built a blood vessel. We use the intralipid to imitate the optical scattering characteristics of human skin, and the hemoglobin and melanin for the optical absorption characteristics. In this study, we did two subjects. First, we decide the fabrication process of the phantom. Second, we compared newly developed phantoms with human skin by using our NIR detecting system, and confirm the availability of these phantoms.

  20. 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.