Objective To estimate the clinic therapeutic effect of the surgical operation on petrous bone cholesteatoma by supra petrous-mastoid process approach.

• 目的评估经岩-乳突进路切除颞骨岩部胆脂瘤的临床疗效。方法4例岩骨胆脂瘤伴有中耳感染行乳突腔开放术式;