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Venous anatomy

Jang W Yoon, Sara Ganaha, Clarence Watridge
BACKGROUND: Congenital agenesis of the inferior vena cava (IVC) can lead to the development of a prominent venous collateral system within and around the spine due to the development of venous collaterals. Surgery on such patients can harbor the risk of catastrophic bleeding or decompensation of a delicate venous drainage pattern during spinal manipulation or even epidural exploration. CASE DESCRIPTION: A 49-year old man with a congenital agenesis of the IVC presented with signs and symptoms of an L5 radiculopathy...
March 12, 2018: World Neurosurgery
Thomas Coquet, Michel Lefranc, Louis Chenin, Pascal Foulon, Éric Havet, Johann Peltier
In this anatomy report, we describe the first case of abducens nerve duplication limited to the sphenopetroclival venous gulf and the cavernous sinus. The objective point of division of the two duplicated roots was localized at the gulfar face of the dural porus, just distal to the unique cisternal trunk of the abducens nerve, as it pierced the petroclival dural mater. In the gulfar segment, both roots traveled through a variant of Dorello's canal called the "petrosphenoidal canal" and remained separated through the posterior half of the cavernous sinus...
March 15, 2018: Surgical and Radiologic Anatomy: SRA
Bruno Lorenção de Almeida, Fabio Henrique Rossi, Amanda Guerra de Moraes Rego Sousa, Antonio Massamitsu Kambara, Nilo Mitsuru Izukawa, Camila Baumann Beteli, Sthefanie Fauve Andrade Cavalcante, Thiago Osawa Rodrigues, Patricia E Thorpe
OBJECTIVE: The objective of this study was to evaluate the correlation between venous pressure gradients (VPGs) and intravascular ultrasound (IVUS) for the diagnosis of caval-iliac venous obstructions in patients with advanced chronic venous insufficiency. METHODS: Fifty patients with advanced chronic venous insufficiency symptoms (Clinical, Etiology, Anatomy, and Pathophysiology class 3 to 6) were prospectively submitted to multiplanar venography (MV) with intravenous pressure measurements and IVUS...
March 8, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
Ionut Negoi, Mircea Beuran, Sorin Hostiuc, Ruxandra Irina Negoi, Yosuke Inoue
The surgeon dissecting the base of the mesenterium, around the superior mesenteric vein (SMV) and artery, is facing a complex tridimensional vascular anatomy and should be aware of the anatomical variants in this area. The aim of this systematic review is to propose a standardized terminology of the superior mesenteric vessels, with impact in colon and pancreatic resections. We conducted a systematic search in PubMed/MEDLINE and Google Scholar databases up to March 2017. Forty-five studies, involving a total of 6090 specimens were included in the present meta-analysis...
March 8, 2018: Scientific Reports
Ali Mohtashami, Andrew Kiat, Jane Cross, Robert Simon, Austin Curtin
INTRODUCTION: Abernethy malformations are extremely rare congenital anomalous portosystemic shunts. We report the case of a patient with a rare variant Abernethy malformation between the superior mesenteric vein and left renal vein, associated with a massive jejunal diverticulum. PRESENTATION OF CASE: A 37-year-old Caucasian female presented to our emergency department with severe abdominal pain and proceeded to laparotomy for a presumed small bowel obstruction...
February 27, 2018: International Journal of Surgery Case Reports
Junji Kamogawa, Osamu Kato, Tatsunori Morizane
PURPOSE: The aim of this study was to introduce a new method of producing three-dimensional (3D) images of vertebral venous plexuses (VVPs) by 3D-MRI with and without contrast media, to identify pathoanatomical features that might accelerate or modify spinal canal stenosis. METHODS: We used a 1.5-T MRI unit with two different 3D sequences with and without contrast media. Multi planar reconstruction (MPR) images of VVPs could be obtained by volume image subtraction methods with a workstation for dural sac from whole 3D volume MPR without contrast media, using images before and after gadoteridol injection...
March 7, 2018: Japanese Journal of Radiology
Hanifi Bayaroğulları, Gülen Burakgazi, Taşkın Duman
PURPOSE: We aimed to determine the anatomical variations more comprehensively particularly at the level of superior sagittal sinus (SSS), confluence of sinuses (CS), transverse sinuses (TS), straight sinuses (SS) and occipital sinuses (OS) with the help of the images obtained via MRI venography, and to contribute to the classification efforts. METHODS: In our retrospective study, we evaluated 211 patients who admitted to our hospital with various complaints and cerebral MRI venography has been performed...
March 7, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
Gulraiz Chaudry, Anna P Lillis, Raja Shaikh, Horacio M Padua, Rush H Chewning, Ahmad I Alomari
PURPOSE: To characterize anatomy of congenital arterioportal fistulas (CAPF) and correlate this with technique and outcomes of transcatheter embolization (TCE). MATERIALS AND METHODS: Retrospective review was conducted of children with CAPF that underwent TCE in a 10-year period. Medical records, imaging and procedure details were reviewed. TCE was performed via transarterial (n = 5), portal (n = 5) or patent ductus venosus (n = 1) approach. Embolic agents used were coils (n = 10), Onyx (n = 1) and Amplatzer septal occluder (n = 1)...
March 6, 2018: Cardiovascular and Interventional Radiology
Min Wu, Xianming Fu, Ying Ji, Wanhai Ding, Dali Deng, Yehan Wang, Xiaofeng Jiang, Chaoshi Niu
BACKGROUND: Microvascular decompression (MVD) of the trigeminal nerve is the most effective treatment for trigeminal neuralgia (TN). However, when encountering with classical trigeminal neuralgia caused by venous compression, the procedure becomes much more difficult, and failure or recurrence due to incomplete decompression may become frequent. This study aimed to investigate the anatomical variation of the culprit veins, and discuss the surgical strategy for different types respectively...
March 3, 2018: World Neurosurgery
Neal A Chatterjee, E Kevin Heist
Cardiac resynchronization therapy (CRT) is an important therapeutic tool in the management of patients with heart failure and electrical dyssynchrony. In appropriately selected patients, landmark randomized controlled trials have demonstrated morbidity and mortality benefit beyond standard goal-directed medical therapy. Current guidelines emphasize the greatest clinical efficacy of CRT in patients with symptomatic heart failure, left bundle branch block, and wide QRS duration (> 150 ms). Other relevant considerations include the presence of atrial fibrillation, the presence of AV block, the etiology of cardiomyopathy, the presence of masked left-sided conduction delay, and the impact of comorbidities that might predict poor clinical response...
March 6, 2018: Current Treatment Options in Cardiovascular Medicine
Raudel Garcia, Nicos Labropoulos
Venous diseases are highly prevalent, mostly caused by valve incompetence and/or obstruction of the vein lumen. Signs and symptoms are diverse and unspecific. Careful clinical assessment and imaging interpretation are crucial to diagnosis. Duplex ultrasound is the first choice and often the gold standard imaging technique for this purpose, providing information on the anatomy and function of the veins. This article describes the sonographic anatomic and hemodynamic criteria used for the diagnosis of venous reflux, venous obstruction, and the most frequent complications after interventions in the superficial, perforating, and deep venous systems...
April 2018: Surgical Clinics of North America
Sadanori Kameda, Osamu Tanaka, Hayato Terayama, Teruhisa Kanazawa, Reinii Sakamoto, Shuhei Tetsu, Kou Sakabe
BACKGROUND: Clinicians should understand that jugulocephalic vein variants may be occasionally found. This study aims to classify jugulocephalic vein variants and obtain their frequency. MATERIALS AND METHODS: We investigated anatomical variants of the cephalic vein in 55 human cadavers during a gross anatomy course at our medical school. RESULTS: The percentage of jugulocephalic veins that pass through the anterior part of the clavicle and anastomose to the jugular vein as per previous studies and our study was approximately 2 to 5%...
March 3, 2018: Folia Morphologica (Warsz)
Kaitlin M Ford, Sara Smolinski, Juan Carlos Perez Lozada
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...
February 2018: Radiology Case Reports
Carolina Posso, David Delgado Anaya, Jeison Aguilar Henao, Juan M Velasquez Gaviria
PURPOSE: The previous cadaveric studies of facial artery perforators have frequently reported high variability, and those results remain to be validated in the Colombian population. Thus, we aimed to describe the vascular anatomy of the lateral nasal artery cutaneous branches and their clinical applications using Colombian cadavers. MATERIALS AND METHODS: Nine hemifaces from six fresh cadavers were included in the study. Terminal branches of the facial artery and cutaneous perforators of the lateral nasal artery were dissected...
February 26, 2018: Journal of Surgical Oncology
Takaaki Osawa, Shunichiro Komatsu, Seiji Ishiguro, Tsuyoshi Sano
PURPOSE: Knowledge of mesenteric venous anatomy is important to safely perform laparoscopic complete mesocolic excision (CME) of the right colon. Despite their previously reported diversity, consistent features of the right colonic and pancreatic veins can be discerned. The objective of this study was to evaluate anatomical consistency of the right colic vein (RCV) and the pancreaticoduodenal vein associated with the colic vein (PDV-C). METHODS: This study included 125 consecutive patients undergoing contrast-enhanced multidetector-row CT of the abdomen...
February 26, 2018: Surgical and Radiologic Anatomy: SRA
Andrea E Copeland, Caitlin E Hoffman, Vassilios Tsitouras, Dhruve S Jeevan, Emily S Ho, James M Drake, Christopher R Forrest
Background: The pattern of cranial venous drainage in syndromic craniosynostosis is unpredictable and not adequately understood. Collateral channels substitute for stenotic venous sinuses and pose potential risk for surgical intervention. The purpose of this study was to analyze the patterns of venous drainage in patients with syndromic craniosynostosis and their influence on operative planning and morbidity. Methods: A retrospective study of patients with syndromic craniosynostosis from 2000 to 2013 was performed...
January 2018: Plastic and Reconstructive Surgery. Global Open
Jun Hua, Peiying Liu, Tae Kim, Manus Donahue, Swati Rane, J Jean Chen, Qin Qin, Seong-Gi Kim
The measurement of cerebral blood volume (CBV) has been the topic of numerous neuroimaging studies. To date, however, most in vivo imaging approaches can only measure CBV summed over all types of blood vessels, including arterial, capillary and venous vessels in the microvasculature (i.e. total CBV or CBVtot). As different types of blood vessels have intrinsically different anatomy, function and physiology, the ability to quantify CBV in different segments of the microvascular tree may furnish information that is not obtainable from CBVtot, and may provide a more sensitive and specific measure for the underlying physiology...
February 16, 2018: NeuroImage
Kapil Bhalla, Deepali Garg, Mahima Rajan, Jaya Shankar Kaushik, Geeta Gathwala
Nephrotic syndrome is a prothrombotic state with predisposition to venous sinus thrombosis and arterial vascular stroke. Watershed infarcts in junction of arterial territory develop in hypotensive hypovolemic state. These border zone infarcts are usually bilateral in the absence of unilateral arterial stenosis or microembolism. We report a 6-year-girl of frequently relapsing nephrotic syndrome who developed sudden onset hemiparesis with aphasia. Magnetic resonance (MR) imaging brain revealed unilateral watershed infarct in territory between the major cerebral arterial vessels with evidence of restricted diffusion and normal vessel anatomy on MR angiography...
January 2018: Journal of Natural Science, Biology, and Medicine
Francesco Gallo, Matteo Tebaldi, Carlo Tumscitz
Percutaneous treatment of chronic total occlusions (CTO) is one of the major challenges in contemporary interventional cardiology. These lesions are identified in 15% to 30% of all patients referred for coronary angiography. Percutaneous coronary intervention (PCI) of CTOs is technically challenging and requires familiarity with advanced interventional techniques as well as specialty equipment. The choice of strategy and materials is based on clinical features and coronary anatomy; the correct choice is essential to improve the success probability...
January 2018: Giornale Italiano di Cardiologia
Ulka Sachdev, Lena Vodovotz, Julie Bitner, Derek Barclay, Ruben Zamora, Jinling Yin, Richard L Simmons, Yoram Vodovotz
OBJECTIVE: Chronic venous insufficiency (CVI) affects 25 million adults in the United States. Little emphasis has been placed on inflammatory changes associated with CVI. We hypothesize that in patients with early to mid-stage benign varicose vein disease, differences in circulating inflammatory mediators will be manifested in blood draining the involved area vs circulating blood in control subjects. METHODS: Patients undergoing either endovenous ablation or sclerotherapy for Clinical, Etiology, Anatomy, and Pathophysiology clinical class 3 to 5 disease underwent phlebotomy from regional veins at the time of the procedure...
February 10, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
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