Clinical presentation and treatment of distal anterior inferior cerebellar artery aneurysms.

Neurosurgical Review
Hiroshi TokimuraKazunori Arita

Abstract

Aneurysms located at the distal portion of the anterior inferior cerebellar artery (AICA) are rare, and their clinical features are not fully understood. We report the clinical features and management of nine distal AICA aneurysms in nine patients treated during the past decade at Kagoshima University Hospital and affiliated hospitals. Our series includes seven women and two men. Of their nine aneurysms, eight were ruptured and one was unruptured; six were saccular and three were dissecting aneurysms. The most prevalent location was the meatal loop (n = 5) followed by the postmeatal (n = 3) and premeatal segment (n = 1) of the AICA, suggesting hemodynamic stress as an etiology of these distal AICA aneurysms. Of the nine patients, five presented with angiographic features suggestive of increased hemodynamic stress to the AICA and the common trunk of the posterior inferior cerebellar artery, with vertebral artery stenosis, marked laterality, and a primitive hypoglossal artery. We addressed eight aneurysms (eight patients) surgically; one aneurysm in one patient disappeared in the course of 3 months without surgical treatment. Of the eight surgically treated aneurysms, seven were ruptured and one was unruptured, five were clipped ...Continue Reading

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Citations

Apr 20, 2014·Surgical and Radiologic Anatomy : SRA·David KimballMarios Loukas
May 13, 2015·Journal of Neurointerventional Surgery·Justin R MascitelliJohanna T Fifi
Oct 18, 2016·Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association·Jan-Folkard WillmsAlexander A Tarnutzer
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May 31, 2019·Neurosurgical Review·Gopinathan AnilTseng Tsai Yeo
Nov 3, 2020·Journal of Neurological Surgery. Part B, Skull Base·Jorge RasmussenPablo Ajler

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