Bilateral Anomalous Posterior Inferior Cerebellar Artery-Anterior Inferior Cerebellar Artery Anastomotic Arteries Associated With a Ruptured Cerebral Aneurysm —Case Report—

Naoko FUJIMURA; Toshi ABE; Masaru HIROHATA; Hitoshi MORIMITSU; Takashi TOKUTOMI; Minoru SHIGEMORI

doi:10.2176/nmc.43.396

Case Reports

Bilateral Anomalous Posterior Inferior Cerebellar Artery-Anterior Inferior Cerebellar Artery Anastomotic Arteries Associated With a Ruptured Cerebral Aneurysm

—Case Report—

Naoko FUJIMURA, Toshi ABE, Masaru HIROHATA, Hitoshi MORIMITSU, Takashi TOKUTOMI, Minoru SHIGEMORI

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Keywords: aneurysm, subarachnoid hemorrhage, vascular anomaly, posterior cranial fossa

JOURNAL OPEN ACCESS

2003 Volume 43 Issue 8 Pages 396-398

DOI https://doi.org/10.2176/nmc.43.396

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Abstract

A 50-year-old man presented with subarachnoid hemorrhage from a ruptured cerebral aneurysm arising from a left posterior inferior cerebellar artery (PICA)-anterior inferior cerebellar artery anastomotic artery manifesting as severe headache, obtundation, and quadriplegia. Conventional and three-dimensional digital subtraction angiography showed that the anastomotic complex was present bilaterally and both vertebral arteries terminated at the origin of the PICA. The identification of this anomalous vascular network allowed coil embolization of the broad-based aneurysm with occlusion of the parent artery. The patient had residual moderate disturbance of consciousness and quadriplegia before transfer for rehabilitation.

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