1952年Dix等首先描述前庭神经元炎综合症。Morgenstein等(1971)报告了此病前庭神经上支及前庭神经节的某些变性情况。健康人的前庭神经节的超微结构已有人研究,而前庭神经元炎的超微结构研究尚不多。本文报告一例前庭神经元炎及电镜观察资料。患者女性,47岁,突然头晕2月,伴有严重恶心,头顶部有重压感,稍活动即感平衡失调。无其他耳症状。听觉功能,内耳道x线相正常,全身检查正常。冷热试 1952 Dix first described vestibular neuronitis syndrome. Morgenstein et al. (1971) reported some degeneration of the supraventricular and vestibular ganglia in this disease. The ultrastructure of vestibular ganglia in healthy people has been studied, while the ultrastructure of vestibular neuritis is not yet studied. This article reports a case of vestibular neuronitis and electron microscopy observations. Patient Female, 47 years old, suddenly dizzy In February, accompanied by severe nausea, a heavy feeling of pressure at the top of the head, a slight disturbance of balance. No other ear symptoms. Auditory function, normal internal ear x-ray, normal body check. Cold test