Department of Radiology, Leiden University Medical Center, PO Box 9600, 2300 RC, Leiden, The Netherlands,
Insights Imaging. 2012 Apr;3(2):139-53. doi: 10.1007/s13244-011-0134-z. Epub 2011 Dec 9.
An overview is presented of the common and uncommon diseases of the inner ear and of the cochleovestibular nerve within the internal acoustic meatus and cerebellopontine angle cistern causing sensorineural deafness.An imaging-pattern-based approach is used to help detect disease and narrow the differential diagnosis. Main Messages • The most common soft tissue mass lesions in the cerebellopontine angle are schwannoma and meningioma. • Contrast-enhanced MRI may reveal clinically unsuspected inflammatory, auto-immune or tumoural disease. • Hearing loss may be caused by infection, inflammation or, rarely, perineural tumour spread along the cochleovestibular nerve. • Labyrinthitis may lead to rapidly progressive ossification of the labyrinth.
本文对内耳和内听道及桥小脑角池内的耳蜗前庭神经的常见和罕见疾病进行了概述,这些疾病可导致感音神经性聋。采用基于影像学表现的方法有助于发现疾病并缩小鉴别诊断范围。
主要信息
• 桥小脑角最常见的软组织肿块病变是神经鞘瘤和脑膜瘤。
• 增强 MRI 可能会显示出临床上未怀疑的炎症、自身免疫或肿瘤性疾病。
• 听力损失可由感染、炎症引起,或很少由沿耳蜗前庭神经的神经周肿瘤扩散引起。
• 迷路炎可导致迷路迅速进行性骨化。