Kamiya K, Nagai H, Koide K, Yamashita N, Shimazu N
Department of Neurosurgery, Nagoya City University, Japan.
Surg Neurol. 1994 Jul;42(1):46-51. doi: 10.1016/0090-3019(94)90249-6.
Two cases of peripheral anterior inferior cerebellar artery (AICA) aneurysms are reported. The first case was a 60-year-old man who showed frequent attacks of subarachnoid hemorrhage (SAH) and hearing disturbance. His aneurysm was obliterated by trapping the AICA and his neurologic status was unchanged compared with preoperatively. The second case had SAH without cranial nerve involvement; this aneurysm was obliterated by neck clipping. He was discharged without neurologic deficit. Peripheral AICA aneurysm has already been reported in 48 cases including arteriovenous malformation-associated cases. This aneurysm may show cranial nerve involvement (seventh and eighth) without SAH as in the case of internal carotid-posterior communicating artery aneurysms. We review the clinical signs of these cases and discuss them from the point of view of anatomic variations of the AICA and internal auditory artery.
报告了两例小脑前下外侧动脉（AICA）动脉瘤病例。第一例是一名60岁男性，表现为频繁的蛛网膜下腔出血（SAH）发作和听力障碍。通过结扎AICA闭塞了他的动脉瘤，与术前相比其神经状态未改变。第二例有SAH但无颅神经受累；该动脉瘤通过夹闭瘤颈得以闭塞。他出院时无神经功能缺损。包括与动静脉畸形相关的病例在内，外周AICA动脉瘤已报告48例。这种动脉瘤可能如颈内动脉-后交通动脉瘤那样，在无SAH的情况下出现颅神经受累（第七和第八对颅神经）。我们回顾这些病例的临床体征，并从AICA和内听动脉的解剖变异角度进行讨论。
