نتایج جستجو برای: avm

تعداد نتایج: 1303  

Nasal arterio-venous malformations (AVM) are uncommon lesions. We present a rare case of huge, long standing AVM in the nasal area which was treated by angioembolization, followed by surgical excision and forehead flap reconstruction.

Introduction: Arteriovenous malformations (AVMs) are uncommon vascular lesions that can arise in any part of the body. Case Report: In this case study, we presented a huge AVM of the upper lip in a 70-year-old man that he noticed since 5years ago with slow growth in this period. Computed tomography angiography revealed a large AVM with feeders from the right...

اشرفی, حمید, بوستانی, رضا,

  Received: 8 Oct, 2008 Accepted: 11 Feb, 2009   Abstract   Arteriovenous Malformation( AVM ) is one of the most common etiologies of subarachnoid hemorrhage. In the past, conventional angiography was the only way for the diagnosis of AVM but nowadays, using noninvasive devices such as MRA and recently TCD, the diagnosis of AVM is revaluated.   This patient is a 19 year old man who was admitte...

Journal: :Stroke 2014
Raquel Ferreira Tiago Santos Arun Amar Stanley M Tahara Thomas C Chen Steven L Giannotta Florence M Hofman

BACKGROUND AND PURPOSE Cerebral arteriovenous malformation (AVM) is a vascular disease that disrupts normal blood flow and leads to serious neurological impairment or death. Aberrant functions of AVM-derived brain endothelial cells (AVM-BECs) are a disease hallmark. Our aim was to use microRNA-18a (miR-18a) as a therapeutic agent to improve AVM-BEC function. METHODS Human AVM-BECs were tested...

2017
Szu-Kai Hsu Chih-Ju Chang I-Chang Su

Spontaneous regression of cerebral arteriovenous malformation (AVM) is a rare phenomenon, but its occurrence is an important consideration in treatment planning. A 58-year-old male was found to have a high-flow AVM of Spetzler-Martin Grade III. Before his scheduled treatment, the AVM ruptured with a large parenchymal hemorrhage. Following emergency decompressive surgery, a targeted embolization...

Journal: :Journal of neurointerventional surgery 2018
Sophia F Shakur Denise Brunozzi Ahmed E Hussein Andreas Linninger Chih-Yang Hsu Fady T Charbel Ali Alaraj

BACKGROUND The hemodynamic evaluation of cerebral arteriovenous malformations (AVMs) using DSA has not been validated against true flow measurements. OBJECTIVE To validate AVM hemodynamics assessed by DSA using quantitative magnetic resonance angiography (QMRA). MATERIALS AND METHODS Patients seen at our institution between 2007 and 2016 with a supratentorial AVM and DSA and QMRA obtained b...

Journal: :Stroke 2004
A V Khaw J P Mohr R R Sciacca H C Schumacher A Hartmann J Pile-Spellman H Mast C Stapf

BACKGROUND AND PURPOSE The goal of this study was to analyze the association of hemorrhagic presentation with infratentorial brain arteriovenous malformations (AVMs). METHODS The 623 consecutive, prospectively enrolled patients from the Columbia AVM Databank were analyzed in a cross-sectional study. Clinical presentation (diagnostic event) was categorized as intracranial hemorrhage or nonhemo...

2014
Jung-Hoon Noh Je Young Yeon Jae-Han Park Hyung Jin Shin

The coexistence of moyamoya disease (MMD) with an arteriovenous malformation (AVM) is exceedingly rare. We report two cases of AVM associated with MMD. The first case was an incidental AVM diagnosed simultaneously with MMD. This AVM was managed expectantly after encephalo-duro-arterio-synangiosis (EDAS) as the main feeders stemmed from the internal carotid artery, which we believed would be obl...

Journal: :Neurosurgery clinics of North America 2013
William A Friedman

Stereotactic radiosurgery for intracranial arteriovenous malformations (AVMs) has been performed since the 1970s. When an AVM is treated with radiosurgery, radiation injury to the vascular endothelium induces the proliferation of smooth muscle cells and the elaboration of extracellular collagen, which leads to progressive stenosis and obliteration of the AVM nidus. Obliteration after AVM radios...

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