Honda Y, Tanaka R, Kameyama S
Department of Neurosurgery, Brain Research Institute, Niigata University, Japan.
Neurol Med Chir (Tokyo). 1994 Nov;34(11):763-7. doi: 10.2176/nmc.34.763.
A 62-year-old female presented with a distal anterior inferior cerebellar artery (AICA) aneurysm showing severe involvement of the facial and acoustic nerves manifesting as progressive left hearing disturbance and left facial nerve paresis. She was admitted to our hospital 2 months after the onset. A saccular aneurysm arising from the meatal loop of AICA was found between the facial and acoustic nerves which were damaged directly by the aneurysm. Magnetic resonance imaging demonstrated a vascular anomaly, differentiating this disorder from cerebellopontine angle tumor, and evidence of an old subarachnoid clot. These characteristics were extremely helpful for the differential diagnosis. Neck clipping and aneurysmectomy were performed to achieve decompression of the cranial nerves. One year and 2 months later full function of the facial nerve returned but the hearing disturbance persisted.
一名62岁女性因小脑前下动脉（AICA）远端动脉瘤就诊，该动脉瘤严重累及面神经和听神经，表现为进行性左耳听力障碍和左侧面神经麻痹。发病2个月后入院。发现一个起源于AICA内耳道袢的囊状动脉瘤，位于面神经和听神经之间，这两条神经直接受到动脉瘤的损害。磁共振成像显示存在血管异常，可将该疾病与桥小脑角肿瘤相鉴别，同时还有陈旧性蛛网膜下腔血凝块的证据。这些特征对鉴别诊断非常有帮助。进行了颈部夹闭术和动脉瘤切除术以实现颅神经减压。1年零2个月后，面神经功能完全恢复，但听力障碍仍然存在。
