慢性化脓性中耳炎乳突手术后复发,临床上屡见不鲜,近年来虽有手术器械的发展,手术技巧的改进,但复发仍存在一定比例。其主要原因为:残留的胆脂瘤、病灶气房清除不彻底及手术野不能充分暴露。其中残留胆脂瘤在封闭式手术中占的比例比开放式手术多近一倍。残留的病灶气房常见的部位依次为鼓室天盖气房,窦脑膜角气房,乳突尖端气房,面神经隐窝及下鼓室。手术野不能充分暴露的原因 Chronic suppurative otitis media recurrence after mastoid surgery, clinically common, although in recent years the development of surgical instruments, surgical techniques to improve, but there is still a certain percentage of recurrence. The main reason is: residual cholesteatoma, lesions clear removal of the air chamber and surgical field can not be fully exposed. Which residual cholesteatoma in closed surgery accounted for nearly double the proportion of open surgery. Residual lesions of the common parts of the air chamber followed by the tympanic room, sinus chamber angle, mastoid tip of the atrium, facial nerve recess and the tympanic cavity. Causes of surgical field can not be fully exposed