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Ruptured Intrameatal Aneurysm of the Anterior Inferior Cerebellar Artery Accompanying an Arteriovenous Malformation: a Case Report

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Abstract

The distal anterior inferior cerebellar artery (AICA) aneurysms located inside the internal auditory canal are rare. The association of the distal AICA aneurysms and an arteriovenous malformation (AVM) on the same arterial trunk is exceptional. Eight reports of a total of ten cases have been published and all of the reported aneurysms were located in the meatal or postmeatal segment of the AICA. Herein, we report a case of ruptured aneurysm in the intrameatal portion of the AICA accompanying an AVM fed by the same artery. A 55-year-old man suffering from subarachnoid hemorrhage due to a ruptured intrameatal aneurysm with a small AVM underwent surgical trapping of the meatal loop, resulting in uneventful recovery. Follow-up angiography demonstrated neither aneurysm nor residual AVM nidus. We propose that trapping of the meatal loop could be a safe and feasible alternative to unroofing followed by neck clipping in selected patients with an intrameatal aneurysm of the AICA. We also review here the relevant literature.

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Conflicts of Interests Statement

The authors declare no conflict of interest concerning the material and methods used in this study or the findings specified in this paper.

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Authors and Affiliations

  1. Department of Neurosurgery, Stroke and Neurological Disorders Centre, Kyung Hee University Hospital at Gangdong, Sangil-Dong 149, Gangdong-Gu, Seoul, South Korea

    Sun Joo Lee, Jun Seok Koh & Seung Hwan Lee

  2. Department of Radiology, Kyung Hee University Hospital at Gangdong, Sangil-Dong 149, Gangdong-Gu, Seoul, South Korea

    Chang Woo Ryu

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  1. Sun Joo Lee
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  2. Jun Seok Koh
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  3. Chang Woo Ryu
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  4. Seung Hwan Lee
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Correspondence to Jun Seok Koh.

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Lee, S.J., Koh, J.S., Ryu, C.W. et al. Ruptured Intrameatal Aneurysm of the Anterior Inferior Cerebellar Artery Accompanying an Arteriovenous Malformation: a Case Report. Cerebellum 11, 808–812 (2012). https://doi.org/10.1007/s12311-011-0349-z

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