Document Detail

Endovascular treatment of intracranial microarteriovenous malformations.
MedLine Citation:
PMID:  19035724     Owner:  NLM     Status:  MEDLINE    
OBJECT: Microarteriovenous malformations (micro-AVMs) are an uncommon subgroup of brain AVMs defined by a nidus measuring < 1 cm in diameter. The clinical features, angiographic characteristics, and outcomes in patients with micro-AVMs who had been treated endovascularly after presenting with hemorrhage were reviewed to identify common features affecting prognosis. METHODS: Between 1997 and 2006, 25 patients (12 females and 13 males) with 26 micro-AVMs were treated. Twenty-four patients presented with intracerebral hematoma and 1 with subarachnoid hemorrhage only. All patients underwent CT on admission, diagnostic cerebral angiography, and 1 session of endovascular treatment during the acute phase. RESULTS: Procedure-related complications occurred in 3 patients (12%), which caused temporary hemiparesis in 1 (4%) and no clinical sequelae in 2 patients (8%). Complete nidus obliteration was achieved at the end of the embolization in 22 (84.6%) of 26 lesions. Two recurrences were evident on follow-up angiography 6 months postembolization, resulting in a complete obliteration rate of 77% (20 of 26 lesions) after a single treatment. Late angiography was performed in 12 patients, and no further recurrences were identified. CONCLUSIONS: Immediate complete obliteration of a micro-AVM with a high permanent cure and low morbidity rates was accomplished using endovascular treatment. Early embolization after bleeding should be considered as an alternative to resection.
Alexander Andreou; Ioannis Ioannidis; Shivendra Lalloo; Nasis Nickolaos; James V Byrne
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of neurosurgery     Volume:  109     ISSN:  0022-3085     ISO Abbreviation:  J. Neurosurg.     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-11-27     Completed Date:  2009-01-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0253357     Medline TA:  J Neurosurg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1091-7     Citation Subset:  AIM; IM    
Department of Neurosurgery & Interventional Neuroradiology, Hygeia Hospital, Athens, Greece.
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MeSH Terms
Catheterization / methods*
Cerebral Angiography
Cerebral Arteries / physiopathology*,  radiography
Child, Preschool
Embolization, Therapeutic / methods*
Hematoma / diagnosis,  physiopathology,  therapy
Intracranial Arteriovenous Malformations / diagnosis,  physiopathology*,  therapy*
Middle Aged
Retrospective Studies
Subarachnoid Hemorrhage / diagnosis,  physiopathology,  therapy
Treatment Outcome
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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