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55岁男性,患平衡障碍,右耳聋18个月,右面肌力弱6个月。有严重嗜酒、中毒性肝炎和多次头颅外伤史。由于患者苦于平衡障碍和可疑小的面神经瘤,经迷路进行内耳道探查,发现面神经正常,面神经和耳蜗神经间有一个大的小脑前下动脉袢。第八神经大体观察正常,切除耳蜗和前庭神经,做成切片,进行光镜和电镜观察。患者恢复顺利。[光镜所见]第八神经耳蜗和前庭部出现病理改变。神经胶质部不同神经区显示明显差异。外周部有髓神经纤维一般保存完好,而中枢段几
55-year-old man with balance disorders, right deafness for 18 months and right-sided weakness for 6 months. Serious alcoholism, toxic hepatitis and multiple skull trauma history. Due to the patient suffering from balance disorders and suspicious small facial nerve tumors, lost to the exploration of the inner ear canal and found that the facial nerve is normal, there is a large anterior inferior cerebellar artery between the facial nerve and the cochlear nerve. The eighth nerve generally observed normal, cochlear and vestibular nerve resection, made into sections, light and electron microscopy. The patient recovered well. [Light microscopy] The eighth nerve cochlear and vestibular Department appear pathological changes. Neurons in the glial division showed significant differences. Peripheral myelinated nerve fibers are generally well preserved, while the central part of a few