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Venous anatomy

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https://www.readbyqxmd.com/read/29791972/laparoscopic-radical-nephrectomy-for-a-right-renal-tumor-with-renal-vein-tumor-thrombus-in-a-patient-with-situs-inversus-totalis
#1
Jun Ito, Yasuhiro Kaiho, Hiromichi Iwamura, Go Anan, Makoto Sato
Situs inversus totalis (SIT) is a rare congenital anomaly characterized by complete inversion of the thoracic and abdominal organs. Many intra-abdominal and vessel anomalies have been reported in association with SIT. However, there have been no reports on the use of laparoscopic radical nephrectomy with thrombectomy for renal vein thrombus, which is considered as a safe and feasible procedure, in patients with SIT. We herein present the case of an 80-year-old man with SIT who was preoperatively diagnosed with a right renal tumor and renal vein tumor thrombus...
May 23, 2018: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/29790081/transplant-renal-vein-thrombosis-in-a-recipient-with-aberrant-venous-anatomy
#2
Lyndsey Thiessen, Sarah MacDonell, Chris Wall, Preman Jacob, Ahmed Shoker, Michael A J Moser
Renal vein thrombosis in a transplanted kidney is an uncommon but critical complication that can result in graft loss if management is delayed. A 31-year-old male with known atresia of the inferior vena cava who received a deceased donor renal transplant 7 years previously presented to hospital with severe graft site pain and a week of nausea, vomiting, and chills. Serum creatinine was markedly elevated from baseline. Sonographic examination revealed external iliac vein thrombosis with extension of the thrombus into the transplant renal vein...
May 22, 2018: CEN Case Reports
https://www.readbyqxmd.com/read/29784594/the-effect-of-increasing-catheter-distance-from-the-deep-junction-on-the-outcomes-of-radiofrequency-vein-ablation
#3
Afsha Aurshina, Yawei Zhang, Fang Wang, Jonathan Cardella, Kristine Orion, Bauer Sumpio, Timur Sarac, Cassius Iyad Ochoa Chaar
OBJECTIVE: Thermal vein ablation (VA) is the recommended treatment modality for superficial venous reflux, with a recommended positioning of the catheter at 2 to 3 cm from the junction of the deep venous system. In contrast, novel sealing technology for saphenous VA involves treatment starting at 3 to 5 cm distal to the deep junction. This study examines the effect of increasing catheter distance from the junction on the outcomes of VA using radiofrequency. METHODS: A retrospective single-center review of patients treated with VA was performed...
May 18, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29770706/intestinal-transplants-review-of-normal-imaging-appearance-and-complications
#4
Bashir Hakim, Daniel T Myers, Todd R Williams, Shunji Nagai, John Bonnett
Intestinal transplant (IT) is one of the least common forms of organ transplant but is increasing both in volume of cases and number of centers performing intestinal transplants, with the busiest centers in North America and Europe. IT can be performed in isolation or as part of a multivisceral transplant (MVT). Intestinal failure either in the form of short gut syndrome or functional bowel problems is the primary indication for IT. The normal post-surgical anatomy can be variable due to both recipient anatomy in regard to amount of residual bowel and status of native vasculature as well as whether the transplant is isolated or part of an multivisceral transplant...
May 17, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29762438/venous-anastomoses-in-anterolateral-thigh-flaps-for-the-lower-extremity-vessel-selection-in-lieu-of-obligatory-number
#5
David Mattos, Shawn Diamond, Anmol S Chattha, Johanna N Riesel, Matthew L Iorio
BACKGROUND: Dual venous drainage for anterolateral thigh flaps has been proposed to protect against flap-related complications in head and neck applications. Here we report our experience with single vs dual venous anastomosis during lower extremity free-tissue transfer. METHODS: All free anterolateral thigh flaps for lower extremity reconstruction from 2011 to 2017 were retrospectively reviewed. An algorithm was used to determine the type and number of venous anastomoses, emphasizing patient anatomy, venous quality, and size match...
May 14, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29762436/preoperative-analysis-of-venous-anatomy-before-deep-inferior-epigastric-perforator-free-flap-breast-reconstruction-using-ferumoxytol-enhanced-magnetic-resonance-angiography
#6
John Dortch, Antonio J Forte, Candice Bolan, Pujan Kandel, Galen Perdikis
BACKGROUND: Venous congestion after deep inferior epigastric artery perforator (DIEP) flap breast reconstruction is a complication that may be partially attributable to variations in venous abdominal wall anatomy. In previous work, we have shown that ferumoxytol may be used as a bloodpool contrast agent to perform high-resolution venous imaging. Our current aim was to use this technology to perform a detailed analysis of the venous anatomy among patients undergoing DIEP flap breast reconstruction...
May 14, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29761338/-journey-of-the-s%C3%A2-icd-to-first-line-therapy
#7
REVIEW
Elif Kaya, Reza Wakili, Tienush Rassaf
The subcutaneous implantable cardioverter-defibrillator (S-ICD®, Boston Scientific, Marlborough, MA, USA, previously Cameron Health, San Clemente, CA, USA) represents an important milestone in ICD therapy for prevention of sudden cardiac death (SCD). Since the introduction of the S‑ICD in 2010, the device has undergone further development. Based on the unique feature of an entirely extracardiac implantation, the S‑ICD is able to reduce the common perioperative and long-term complications of the usual endovascular implanted ICD systems...
May 14, 2018: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/29759707/left-atrial-venous-anatomy-a-map-for-future-af-therapies
#8
EDITORIAL
David E Krummen, Gordon Ho
No abstract text is available yet for this article.
September 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759706/the-human-left-atrial-venous-circulation-as-a-vascular-route-for-atrial-pharmacological-therapies-effects-of-ethanol-infusion
#9
Miguel Valderrábano, Percy Francisco Morales, Moisés Rodríguez-Mañero, Candela Lloves, Paul A Schurmann, Amish S Dave
OBJECTIVES: This study catalogued the human venous left atrium (LA) circulation system and the ablative effects of ethanol in different branches. BACKGROUND: Vascular routes to target the LA could have significant therapeutic potential. Beyond the vein of Marshall (VOM), the fluoroscopic LA venous anatomy has not been described. METHODS: Patients undergoing ethanol infusion in the VOM as adjunctive therapy to atrial fibrillation (AF) catheter ablation were included in this study...
September 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29757946/role-of-venous-sampling-in-the-diagnosis-of-endocrine-disorders
#10
REVIEW
Ryan W England, Eliza B Geer, Amy R Deipolyi
Venous sampling is the gold standard for localizing abnormal hormone secretion in several endocrine disorders. The most common indication for venous sampling is in the workup of primary aldosteronism, adrenocorticotropic hormone-dependent Cushing's syndrome, and hyperparathyroidism. In experienced hands, venous sampling is safe and accurate. This review discusses the role of venous sampling in the workup of endocrine disease, describing the underlying anatomy and pathophysiology, as an understanding of these concepts is essential for technical and clinical success...
May 14, 2018: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29744000/a-review-of-transcatheter-closure-of-patent-foramen-ovale
#11
REVIEW
John Neill, C Huie Lin
A patent foramen ovale (PFO) is a common variant in cardiac anatomy found in 25% to 30% of U.S. adults. While PFOs are a normal part of fetal development and commonly seen in asymptomatic adults, they have been implicated in a variety of pathophysiologic conditions. The most clinically important of these is paradoxical embolization of venous thrombus resulting in stroke or systemic embolism. Various devices can be used to close PFOs via a transcatheter approach to prevent recurrent stroke. Data regarding the safety and effectiveness of these devices is rapidly evolving, with recent long-term results suggesting efficacy in preventing secondary stroke in carefully selected patients...
July 2017: Methodist DeBakey Cardiovascular Journal
https://www.readbyqxmd.com/read/29730740/congenital-portosystemic-shunts-diagnosis-and-treatment
#12
Stéphanie Franchi-Abella, Emmanuel Gonzales, Oanez Ackermann, Sophie Branchereau, Danièle Pariente, Florent Guérin
Congenital portosystemic shunts (CPSS) are rare vascular malformations that create an abnormal connection between portal and systemic veins resulting in complete or partial diversion of the portal flow away from the liver to the systemic venous system. Different anatomic types exist and several classifications have been proposed. They can be associated with other malformations especially cardiac and heterotaxia. The main complications include hepatic encephalopathy, liver tumors, portopulmonary hypertension, and pulmonary arteriovenous shunts...
May 5, 2018: Abdominal Radiology
https://www.readbyqxmd.com/read/29726777/surgical-outcomes-after-reoperation-for-recurrent-skull-base-meningiomas
#13
Stephen T Magill, David S Lee, Adam J Yen, Calixto-Hope G Lucas, David R Raleigh, Manish K Aghi, Philip V Theodosopoulos, Michael W McDermott
OBJECTIVE Skull base meningiomas are surgically challenging tumors due to the intricate skull base anatomy and the proximity of cranial nerves and critical cerebral vasculature. Many studies have reported outcomes after primary resection of skull base meningiomas; however, little is known about outcomes after reoperation for recurrent skull base meningiomas. Since reoperation is one treatment option for patients with recurrent meningioma, the authors sought to define the risk profile for reoperation of skull base meningiomas...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29726640/-establishment-of-a-penile-transplantation-model-in-beagle-dogs
#14
Yong-Bin Zhao, Wei-Lie Hu, Li-Chao Zhang, Jun Liu, Chang-Zheng Zhang, Bang-Qi Wang, Yuan-Song Xiao, Hui Hu, Ming Ying
Objective: To investigate the feasibility of establishing a model of allograft penile transplantation in adult beagle dogs and explore the conditions for constructing a stable animal model of penis transplant. METHODS: Following the principles of similarity, repeatability, feasibility, applicability, and controllability in the construction of experimental animal models, we compared the major anatomic features of the penis of 20 adult beagle dogs with those of 10 adult men...
August 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29709330/does-volumetric-measurement-of-cervical-lymph-nodes-serve-as-an-imaging-biomarker-for-locoregional-recurrence-of-oral-squamous-cell-carcinoma
#15
Ali-Farid Safi, Martin Kauke, Hendrik Jung, Marco Timmer, Jan Borggrefe, Thorsten Persigehl, Hans-Joachim Nickenig, Max Zinser, David Maintz, Matthias Kreppel, Joachim Zöller
In consideration of the 3-R-rule (Refine-Replace-Reduce) as a guideline for promoting ethical use of animals for surgical training, we present a novel training model for microvessel anastomosis. At hand of a rat cadaveric study, we evaluated the surgical anatomy of the common carotid artery (CCA), external jugular vein (EJV) and femoral vessels (FV) which were then used as templates for the present investigation. Anatomical dissection of 30 rat cadavers was performed. Two residents without prior microsurgical experience were included in the study and performed 5 CCA, 5 femoral artery, 5 EJV and 5 femoral vein anastomoses...
April 10, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29693258/microvascular-anatomy-of-the-brain-of-the-adult-pipid-frog-xenopus-laevis-daudin-a-scanning-electron-microscopic-study-of-vascular-corrosion-casts
#16
Alois Lametschwandtner, Bernd Minnich
To demonstrate the 3D microvascular anatomy of the brain of the model organism Xenopus laevis Daudin scanning electron microscopy of vascular corrosion casts was correlated with light microscopy of stained 7 µm thick serial tissues sections. Results showed that supplying arteries descended from the leptomeningeal surface without remarkable branchings straight to the subventricular zone where they branched and capillarized. Capillaries showed few H- and/or Y-shaped anastomoses during their centrifugal course toward the leptomeningeal surface where they drained into cerebral venules and veins...
April 25, 2018: Journal of Morphology
https://www.readbyqxmd.com/read/29682393/a-rare-anatomical-variation-of-the-termination-of-right-and-left-cephalic-veins
#17
Raymond Saa-Eru Maalman, Yaw Otchere Donkor, Ali M Ayamba, Jubilant Kwame Abledu
Clinically, the cephalic vein is preferred for haemodialysis in patients with chronic renal failure (CRF), to remove waste products from blood. The cut-down of cephalic vein in the deltopectoral groove is preferred when superior vena caval infusion is necessary. However, cephalic veins exhibit a wide array of developmental variations in terms of formation, course, and termination. In this report, we describe a case of an anomalous cephalic vein with a bifid course of terminations on both left and right upper limbs which has not been described by previous literature...
2018: Case Reports in Vascular Medicine
https://www.readbyqxmd.com/read/29682119/double-inferior-vena-cava-with-azygos-continuation-and-retroaortic-left-renal-vein-associated-with-juxtarenal-abdominal-aortic-aneurysm-surgery
#18
Koji Onoda, Yu Shomura, Takuya Komada
The combination of a double inferior vena cava (IVC), a retroaortic left renal vein, and azygos continuation of the IVC is extremely rare. Here we report the case of a 74-year-old man with this complex venous anomaly associated with a juxtarenal abdominal aortic aneurysm (AAA), who underwent a successful graft implantation with left renal artery reconstruction without injuring the retroaortic venous system. The venous anomaly was diagnosed using preoperative contrast-enhanced computed tomography (CT). Thus, contrast-enhanced CT can provide sufficient information on AAA and anomalous venous anatomy to avoid fatal complications during AAA surgery...
March 25, 2018: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/29678685/success-rate-and-factors-predictive-of-redo-radiofrequency-ablation-of-perforator-veins
#19
Afsha Aurshina, Enrico Ascher, Lauren Mount, Amrit Hingorani, Natalie Marks, Anil Hingorani
OBJECTIVE: Radiofrequency ablation (RFA) is increasingly being employed for treatment of perforator vein insufficiency and venous ulcer healing. Previous studies have shown a closure rate of 60% to 80% in incompetent perforator veins (IPVs) with RFA. The purpose of the study was to determine the utility of a redo RFA for symptomatic recanalized perforators and to predict factors associated with recanalization. METHODS: A retrospective analysis of 642 procedures in 256 patients with venous insufficiency due to IPVs from 2009 to 2015 was conducted...
April 17, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29676670/timing-severity-of-deficits-and-clinical-improvement-after-surgery-for-spinal-dural-arteriovenous-fistulas
#20
Michael M Safaee, Aaron J Clark, Jan-Karl Burkhardt, Ethan A Winkler, Michael T Lawton
OBJECTIVE Spinal dural arteriovenous fistulas (dAVFs) are rare vascular abnormalities caused by arteriovenous shunting. They often form at the dural root sleeve between a radicular feeding artery and draining medullary vein causing venous congestion and edema, decreased perfusion, and ischemia of the spinal cord. Treatment consists of either surgical ligation of the draining vein or selective embolization via an endovascular approach. There is a paucity of data on which modality provides more durable and effective outcomes...
April 20, 2018: Journal of Neurosurgery. Spine
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