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乳突根治术是目前治疗中耳乳突病变应用最为普遍的一种手术。我科自1963年7月～1985年8月共收治胆脂瘤型中耳炎213例,均行乳突根治术,治愈193例,治愈率达90.6%。失败20例共21耳,外院因手术失败转来我院15例,共35例36耳。本文对其手术失败的原因分析如下。一、病灶清除不彻底本组6例乳突腔有胆脂瘤,15例有肉芽组织,多因乳突气房未凿平磨光,尤其在乳突尖部留有气房,术腔有骨坎,鼓窦及鼓隐窝敞开不够宽大,有胆脂瘤碎屑聚积或肉芽组织生长影响干耳。因此中耳乳突手术要求做到:鼓隐窝前壁应与外耳道前壁相平,鼓隐窝和鼓窦上方应尽量与其顶部相平,面神经嵴应略高于水平半规管,使手术腔充分暴露,
Mastoid radical mastectomy is the most common type of surgery for the treatment of otitis media. Our department from July 1963 to August 1985 were treated 213 cases of cholesteatoma otitis media, radical mastectomy, 193 cases were cured, the cure rate was 90.6%. A total of 21 cases of failure in 20 cases, the hospital transferred to our hospital due to failure of surgery in 15 cases, a total of 35 cases 36 ears. This article analyzes the reasons for the failure of surgery as follows. First, the lesion is not completely cleared The group of 6 cases of mastoid cholesteatoma, 15 cases of granulation tissue, mostly due to mastoid air room did not dig flat polished, especially in the tip of the mastoid left atrial cavity, cavity Bone ridge, drum sinus and drum crypt open wide enough, cholelithiasis debris accumulation or granulation tissue growth affect dry ears. Therefore, the requirements of the middle ear mastoid surgery: the anterior wall of the drum crypt should be flat with the anterior wall of the external auditory canal, drum recess and the top of the drum should be as flat as the top with the facial nerve crest should be slightly higher than the level of semicircular canal, the surgical cavity full Exposed,