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以往,耳科医师在处理鼓膜内陷形成的囊袋累及鼓室窦、面神经隐窝胆脂瘤病人时,往往感到是个难题。要么等待观察,直至不得不做乳突根治术,若早期处理,则要承担听力丧失和胆脂瘤复发的风险。30年来,对累及面神经隐窝及鼓室窦的中耳胆脂瘤病人,采用联合进路手术治疗,由于术中角质上皮清理不彻底,尽管有的采取二次手术,但胆脂瘤复发率仍高。鉴于此,施行改进的经外耳道径路的中鼓室技术,处理中鼓室后部内陷囊袋的胆脂
In the past, otologists in the treatment of tympanic membrane pouch formation involving the tympanic sinus, facial nerve recessive cholesteatoma patients, often feel a problem. Or wait for observation, until they have to do radical mastoidectomy, if the early treatment, they have to bear the risk of hearing loss and the recurrence of cholesteatoma. For 30 years, involving middle facial cholesteatoma patients with facial nerve crypt and tympanic sinus, the use of combined approach surgery, due to intraoperative keratinized epithelial cleaning is not complete, although some take second surgery, but the recurrence rate of cholesteatoma high. In view of this, an improved mid-canal approach to the tympanic canal via the external auditory canal, treated with cholecystokinin