颞骨岩部胆脂瘤(petrous bone cholesteatoma)是指各种原因导致的胆脂瘤侵犯至颞骨岩部,到达内耳的内侧范围,临床较少见,有报道其发病率占颞骨岩部病变的4%~9%~([1])。由于其位置深在,缺乏特征性临床症状,早期诊断并不容易。因毗邻重要结构,比如颈内动脉、面神经、迷路、乙状窦、颈静脉球、后颅窝及中颅窝硬脑膜、后组脑神经 Petrous bone cholesteatoma (petrous bone cholesteatoma) refers to a variety of causes of cholesteatoma invasion of the petrous bone to reach the medial area of ​​the inner ear, the clinical rare, it was reported that the incidence of temporal bone rock lesions 4% to 9 % ~ ([1]). Because of its deep location, lack of characteristic clinical symptoms, early diagnosis is not easy. Due to the adjacent important structures, such as the internal carotid artery, facial nerve, labyrinth, sigmoid sinus, jugular bulb, posterior fossa and middle fossa dura, posterior group of cranial nerves