Correlation Between Angiographic Features and Subtypes of Fusiform Aneurysm of Vertebral and Basilar Artery. Issue 2 (May 2015)

• Record Type: Journal Article
• Authors: Shi, Wan-Yin; Li, Ming-Hua; Gu, Jian-Ping; Gu, Bin-Xian; Wang, Wu
• Is Part Of: Neurosurgery quarterly. Volume 25:Issue 2(2015)
• Publication Date: 2015-05
• Subjects: Nervous system -- Surgery -- Periodicals; 617.4805
• DOI: 10.1097/WNQ.0000000000000017
• Languages: English
• ISSNs: 1050-6438

Abstract

<abstract> <title> <x xml:space="preserve">Abstract</x> </title> <sec> <title>Objects:</title> <p>We retrospectively investigated the radiologic differences in subtypes of fusiform aneurysms (FA) of vertebral and basilar arteries.</p> </sec> <sec> <title>Methods:</title> <p>The study included 37 patients with 39 nonperipheral posterior circulation FAs detected by 3D-TOF-magnetic resonance angiography or by digital subtract angiography. Patient-specific and aneurysm-specific data were summarized. FAs were divided into 3 subtypes: focal FA (type I); classic dissecting aneurysm (type II); and dolichoectatic aneurysm (type III). Correlations between the subtypes and their angiographic features, including location, size, and rupture or not were analyzed.</p> </sec> <sec> <title>Results:</title> <p>Thirty-nine posterior FAs, including 28 aneurysms located at vertebral artery (VA), 8 at basilar artery (BA) and 3 at vertebrobasilar junction area, were detected in 37 patients. Twenty-one aneurysms in VA and 1 in BA were type II, among them 15 in VA and 1 in BA were ruptured. Focal FAs, including 7 in VA, 6 in BA, and 3 in vertebrobasilar junction area, were type I. One aneurysm in BA was type III. The subtypes of FAs were location specific (<italic>P</italic>=0.002). Ruptured FAs seemed closely associated with intracranial segment of VA (<italic>P</italic>=0.037).</p> </sec> <sec> <title>Conclusions:</title> <p>The subtypes of FAs were location specific, whereas ruptured FAs were mainly type II at VA without correlation with aneurysmal size.</p> </sec> </abstract>