A ruptured aneurysm of the distal anterior inferior cerebellar artery treated by endosaccular coil embolization: case report

Abstract

Objective: We report the case of a ruptured aneurysm of the distal anterior inferior cerebellar artery (AICA) treated by endosaccular embolization.
Case presentation: An 86-year-old woman presented with subarachnoid hemorrhage (SAH). Computed tomography showed Fisher group 3 SAH. Although the origin of the hemorrhage seemed to be in the posterior circulation based on the CT findings, initial digital-subtraction angiography failed to show an aneurysm in the posterior circulation. Two weeks after the onset of SAH, 3D-CT angiography revealed an aneurysm distal to the meatal loop of the left AICA, to which endosaccular embolization using detachable coils was performed. The postoperative course was uneventful.
Conclusion: To our knowledge, this is the first case report of an AICA aneurysm distal to the meatal loop that was successfully treated by endosaccular embolization.