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arterio-venous malformation

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https://www.readbyqxmd.com/read/27864873/hereditary-haemorrhagic-telangiectasia-to-transplant-or-not-to-transplant-is-there-a-right-time-for-liver-transplantation
#1
Yannick D Muller, Roland Oppliger, Romain Breguet, Philippe Meyer, Laura Rubbia-Brandt, Pierre-Auguste Petignat, Thomas Harr, Eric Dayer, Jörg D Seebach
BACKGROUND & AIMS: Hereditary haemorrhagic telangiectasia is characterized by arterio-venous malformations (AVM). It frequently involves the liver without clinical symptoms, but may lead to biliary ischaemia, portal hypertension, or fatal high-output heart failure. The indication of liver transplantation is controversial. METHODS: Herein, we report the case of a 65-year-old female patient with a 'double Osler syndrome' consisting of hereditary haemorrhagic telangiectasia (HHT) and type I hereditary angioedema diagnosed at the age of 25 and 22 years respectively...
December 2016: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/27797413/selective-arterial-spin-labeling-in-conjunction-with-phase-contrast-acquisition-for-the-simultaneous-visualization-of-morphology-flow-direction-and-velocity-of-individual-arteries-in-the-cerebrovascular-system
#2
Thomas Lindner, Naomi Larsen, Olav Jansen, Michael Helle
PURPOSE: In various cerebrovascular diseases the visualization of individual arteries and knowledge about their hemodynamic properties, like flow velocity and direction, can become important for an accurate diagnosis. Magnetic resonance angiography methods are intended to acquire this information, but often a single acquisition is not sufficient to retrieve all of this desired information. METHODS: Using selective arterial spin labeling (ASL) methods, a single artery of interest can be tagged and visualized, whereas quantitative information about hemodynamics can be retrieved using phase-contrast techniques that are often limited regarding their selectivity...
October 31, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/27766428/multiple-cerebral-arterio-venous-malformations-impact-of-multiplicity-and-hemodynamics-on-treatment-strategies
#3
Klaus-Peter Stein, Isabel Wanke, Neriman Oezkan, Yuan Zhu, I Erol Sandalcioglu, Michael Forsting, Ulrich Sure
BACKGROUND: Multiple AVMs are exceptionally rare lesions and only a few larger series have been published, including other vascular pathologies, such as arterio-venous fistulae (AVF) or patients with hereditary syndromes. Our study presents clinical, angiographic, and therapeutic characteristics of patients harboring sporadic multiple AVMs. METHODS: Basic demographic data, vascular architecture, clinical presentation, treatment strategies, and treatment outcome were analyzed retrospectively from patients with cerebral AVMs treated in our department between 1990 and 2015...
October 20, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27757211/an-unusual-presentation-of-spinal-dural-arteriovenous-fistula-a-case-report
#4
Payam Saadat, Marzie Adabi
BACKGROUND: Spinal dural AVF is the most common type of spinal vascular malformation. However, presenting symptoms differ according to site of spinal involvement. This study described a case of arteriovenous malformation with paraparesis and incontinence. CASE PRESENTATION: Diagnosis of patient was confirmed by clinical and imaging examination using magnetic resonance image and ruling out other possibilities. RESULT: A definitive diagnosis of arterio venous fistula was confirmed by clinical and MRI examination and demonstrated abnormalities compatible with dural arteriovenous fistula...
2016: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/27734988/arterio-venous-malformation-of-the-mandible-case-report-and-review-of-literature
#5
R Spreafico, L Sordo, R Bellotto, M Schipano, A Rescaldani, F Parmigiani
Arteriovenous malformation (AVM) of the head and neck is a rare and potentially life threatening entity due to massive haemorrhage. There are several indications for treatment, including age of the patient and location, extent and type of vascular malformation. Endovascular therapy can effectively cure most lesions with limited tissue involvement. Surgery can be used in selected cases in combination with embolization. Here we report the case of a young woman affected by a massive AVM on the left side of the mandible and submandibular region, and also review the literature on AVM with special attention to treatment strategies...
August 2016: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/27730784/dural-arterio-venous-malformation
#6
P Gupta, S Patel, A Rohatgi, M Chugh
No abstract text is available yet for this article.
February 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27671884/development-of-de-novo-arteriovenous-malformation-following-ischemic-stroke-case-report-and-review-of-current-literature
#7
Aqueel H Pabaney, Richard A Rammo, Rizwan A Tahir, Donald Seyfried
BACKGROUND: Arteriovenous malformations (AVMs) are hypothesized to be static, congenital lesions developing as early as 4 weeks of fetal life. New literature has shown that AVMs may represent dynamic and reactive vascular lesions arising from cerebral infarction, inflammation, or trauma. A literature search reveals 17 previously reported cases of new AVM formation after previous negative imaging studies. This reactive development or "second hit" theory suggests that at a molecular level, growth factors may play a vital role in aberrant angiogenesis and maturation of an arteriovenous fistula into an AVM...
September 23, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27637641/multimodal-flow-assisted-resection-of-brain-avms
#8
Alessandro Della Puppa, Renato Scienza
OBJECT: The authors report their personal experience with brain arterio-venous malformations (bAVMs) surgery with a multimodal flow-assisted approach. METHODS: Data from patients who consecutively underwent bAVM resection with the assistance of indocyanine green video-angiography (ICG-VA), micro-flow probe flowmetry, and temporary arterial clipping test under intra-operative monitoring, were retrospectively analyzed. RESULTS: Twenty seven patients were enrolled in the study...
2016: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/27631206/hyperbaric-oxygen-therapy-for-postoperative-spinal-dural-arterio-venous-fistula-patients-an-observational-cohort-study
#9
Sichang Chen, Yongjie Ma, Peipeng Liang, Xiaohui Wang, Chao Peng, Lisong Bian, Jiang Liu, Jianzhang Ding, Hongqi Zhang, Feng Ling
Spinal dural arterio-venous fistula (SDAVF) is a common type of spinal vascular malformation. Surgical obliteration of the fistula can cure SDAVF anatomically, but the functional outcome is unsatisfactory.The aim of the study was to evaluate the effect of hyperbaric oxygen therapy (HBOT) on the functional recovery of postoperative SDAVF patients.This prospective cohort study included postoperative SDAVF patients. Patients were divided into control and HBOT groups. Patients in control group received conventional treatment, whereas those in the HBOT group received conventional treatment plus HBOT (2...
September 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27607121/arterio-venous-malformations-of-the-nose-combined-approach-for-a-successful-strategy
#10
Daria Almesberger, Francesco Manna, Gianni Franco Guarneri, Andrea Marchesi, Pier Camillo Parodi
BACKGROUND AND PURPOSE: The purpose of the present study is to evaluate the vascular malformations of the head and neck. They are uncommon lesions, but some areas have a significant potential for fatality, due to their massive bleeding. The vascular anatomy of the nose carries a high recurrence rate, due to the unique characteristic of the nose, especially if deep vascular connection is present. METHODS: The present article describes 2 patients of nasal dorsum arteriovenous malformations, both using a combined procedure: preoperative selective embolization, en-bloc tumor resection, and reconstruction with a forehead flap...
September 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27596615/a-case-of-spontaneous-haematoma-from-vertebral-artery-arterio-venous-fistula-in-a-patient-with-neurofibromatosis-type-1
#11
Harsha Narayanamurthy, Sarah El-Badawy, William Mukonoweshuro, Peter Whitfield
Neurofibromatosis type 1 (NF1) is an autosomal dominant condition caused by a mutation on chromosome 17. Vascular abnormalities are recognised complications of NF1. These include aneurysms, stenoses, arteriovenous malformations, fistulae, etc. We report the case of a young gentleman with NF1 with a spontaneous cervical bleed from an arteriovenous fistula arising from the left vertebral artery, and illustrate the various management options and difficulties arising from rapid fistula formation.
September 6, 2016: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/27575310/nodular-proliferation-in-parkes-weber-syndrome
#12
Diego José Rojas Esquivel, Elena Marín Manzano, Nieves Aleicel Concepción, Juan Carlos Lopéz Gutierréz, Luis Riera de Cubas
Parkes Weber syndrome (PWS) is characterized by the association of high flow vascular malformation and overgrowth of a part of the body, usually a limb. In a previous review of 10 patients with PWS from our hospital we described a case of congenital short femur and four cases of severe lymphedema. We present a case of PWS associated with a nodular proliferative form not previously described. A 38 year old male with diagnosis of PWS with involvement of the right lower limb (RLL) was derived to our clinic. He complained about the appearance of painful nodular tumors in his RLL and some episodes of bleeding through the tumors...
August 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27562580/de%C3%A2-novo-formation-of-cerebral-cavernous-malformation-adjacent-to-existing-developmental-venous-anomaly-an-effect-of-change-in-venous-pressure-associated-with-management-of-a-complex-dural-arterio-venous-fistula
#13
Hariprakash Chakravarthy, Tzu-Kang Lin, Yao-Liang Chen, Yi-Ming Wu, Chin-Hua Yeh, Ho-Fai Wong
This is a case report of de novo development of two cerebral cavernous malformations adjacent to existing developmental venous anomalies. The development of cavernomas was noted over a follow-up period of 10 years. These developments happened during the course of staged endovascular management of a complex dural arterio-venous fistula along the right sphenoid wing. The patient presented with a proptosis secondary to lympho-haemangiomatous lesion of the fronto-orbital region and a high-flow right sphenoid wing dural arterio-venous fistula...
August 25, 2016: Neuroradiology Journal
https://www.readbyqxmd.com/read/27327518/endoscopic-endonasal-skull-base-surgery-for-vascular-lesions-a-systematic-review-of-the-literature
#14
Francisco Vaz-Guimaraes, Paul A GARDNERl, Juan C Fernandez-Miranda, Eric Wang, Carl H Snyderman
INTRODUCTION: Endoscopic endonasal skull base surgery for vascular lesions is a controversial topic in neurosurgical practice. Concerns regarding the ability to effectively work through the relatively narrow and deep endonasal corridor and manage serious hemorrhagic complications such as inadvertent internal carotid artery (ICA) injury during endoscopic surgery (EES) are relevant sources of disagreement between neurosurgeons. Nevertheless, following careful preoperative evaluation, EES may be indicated for rare, well-selected cases, including medially-projecting paraclinoid aneurysms and cavernous malformations (CMs) located next to the ventral surface of the brainstem...
December 2016: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/27268317/histologic-evidence-for-arteriovenous-malformation-like-vasculature-occurring-within-an-intracerebral-schwannoma-a-case-report-and-review-of-the-literature
#15
Bayard R Wilson, Jeffrey A Steinberg, Vivian Snyder, Michael N Jiang, Bob S Carter
BACKGROUND: The phenomenon of intracerebral schwannoma is exceedingly rare, and its etiology still a matter of debate. No documented cases of intracerebral schwannoma containing vascular elements consistent with those of an arteriovenous malformation (AVM) have been reported. We describe such a case here. CASE DESCRIPTION: A left temporal intraparenchymal lesion was discovered incidentally in a 34-year-old man after he suffered a mild trauma. The lesion was resected and found on histologic examination to be an intracerebral schwannoma with AVM-like vasculature...
August 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27111875/successful-gelfoam-angioembolisation-in-anastomotic-pseudoaneurysm-a-case-report
#16
Dedrick Kok-Hong Chan, Ker-Kan Tan
INTRODUCTION: The use of angioembolisation in patients with lower gastrointestinal tract haemorrhage has become well established, especially in cases of diverticular bleeding, or in bleeding from arterio-venous malformations. Pseudoaneurysms are rare and the evaluation of selective gelfoam angioembolisation amongst patients with lower gastrointestinal tract bleeding secondary to this etiology has not been extensively studied. The friable nature of pseudoaneurysms may lead to a greater risk of rupture during an attempted angioembolisation procedure...
2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/26911413/late-presentation-of-missed-aorta-caval-fistula-as-arteriovenous-malformation-following-lumbar-disc-surgery
#17
Hakan Şimşek, Emre Zorlu, Serdar Kaya, Mehmet Ali Şahin
No abstract text is available yet for this article.
September 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/26879656/rectal-arterio-venous-malformation-avm-with-bleeding-of-an-internal-hemorrhoid
#18
Yusuke Komekami, Fumio Konishi, Kohzoh Makita, Toma Mijin, Atsushi Onogawa, Takeshi Chochi, Chunyong Lee, Takayoshi Yoshida, Tooru Maeda, Makoto Mitsusada, Shunji Hasegawa
A 38-year-old male with no past history of illnesses visited the out-patient clinic of Nerima Hikarigaoka Hospital complaining of dizziness and persistent anal bleeding. There was a significant anemia on a blood test and colonoscopy showed a thrombus in a markedly swollen internal hemorrhoid. Contrast-enhanced computed tomography (CT) showed a poorly demarcated area with early face enhancement on the right side of the rectum and anal canal. Based on these findings, an arterio-venous malformation (AVM) of the rectum was suspected...
February 2016: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/26842770/brain-radiation-injury-leads-to-a-dose-and-time-dependent-recruitment-of-peripheral-myeloid-cells-that-depends-on-ccr2-signaling
#19
Michael J Moravan, John A Olschowka, Jacqueline P Williams, M Kerry O'Banion
BACKGROUND: Cranial radiotherapy is used to treat tumors of the central nervous system (CNS), as well as non-neoplastic conditions such as arterio-venous malformations; however, its use is limited by the tolerance of adjacent normal CNS tissue, which can lead to devastating long-term sequelae for patients. Despite decades of research, the underlying mechanisms by which radiation induces CNS tissue injury remain unclear. Neuroinflammation and immune cell infiltration are a recognized component of the CNS radiation response; however, the extent and mechanisms by which bone marrow-derived (BMD) immune cells participate in late radiation injury is unknown...
2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/26833168/common-bleeding-disorders-affecting-individuals-with-hereditary-hemorrhagic-telangiectasia
#20
Jennifer LaBranche, Susan Nahirniak, Dilini Vethanayagam
PURPOSE: Hereditary Hemorrhagic Telangiectasia (HHT) is an autosomal dominant disorder affecting vasculature in different organ systems; seen at a rate of approximately 1:5000 in North America. Complications, with significant increases in health service utilization, arise from bleeding and shunts, and are particularly problematic in the lung and liver. Although these patients tend to chronically bleed from the GI tract and nasal cavities, a single bleed from arterio-venous malformations in the lungs or brain can have serious health implications and may be fatal...
February 1, 2016: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
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