Kanehisa Y, Kaji M
Department of Internal Medicine, Kure Mutual Aid Hospital.
Rinsho Shinkeigaku. 1993 Apr;33(4):437-41.
A 77-year-old man who had been diagnosed as the right peripheral facial palsy ten years ago, slowly developed progressive hearing loss and gait disturbance. He died of pneumonia. The autopsy revealed a tumor (4.7 x 2.6 x 2.6 cm) arising from the facial nerve in the region of the right cerebellopontine (C-P) angle. The tumor was displacing the cochlear and vestibular nerve, but did not extend laterally into the internal auditory meatus. Histological diagnosis of this tumor was neurinoma. Facial nerve neurinomas are relatively rare and most of them appear at the vertical portion of the facial nerve. Facial nerve neurinoma originated from the C-P angle is less frequently reported. The most frequent symptom of this neurinoma is hearing loss. We emphasize that preoperative diagnosis of facial nerve neurinoma in the C-P angle is difficult from neurological symptoms, even with CT scanning.
一名77岁男性，10年前被诊断为右侧周围性面瘫，之后逐渐出现进行性听力丧失和步态障碍。他死于肺炎。尸检发现右小脑脑桥角区面神经处有一肿瘤（4.7×2.6×2.6 cm）。肿瘤推移了耳蜗和前庭神经，但未向外侧延伸至内耳道。该肿瘤的组织学诊断为神经鞘瘤。面神经神经鞘瘤相对少见，大多数发生在面神经垂直段。起源于小脑脑桥角的面神经神经鞘瘤报道较少。该神经鞘瘤最常见的症状是听力丧失。我们强调，即使进行CT扫描，根据神经症状术前诊断小脑脑桥角区的面神经神经鞘瘤也很困难。
