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局限于上鼓室的小胆脂瘤症多采取外耳道像存术式。但如果从上鼓室及乳突清除胆脂瘤后,上鼓室侧壁的骨质缺损(简称 SD)没有封闭,术后外耳道皮肤和鼓膜可从此部位再次凹入上鼓室,而再次形成胆脂瘤。1975年以来作者开始使用正方形骨片修复 SD,并命名为“上鼓室侧壁成形术。”手术适应症:1.因胆脂瘤而产生的上鼓室外侧壁的骨缺损在0.5×0.5cm 以下;2.胆脂瘤局限在上鼓室内,且易剥离;3.胆脂瘤仅在听骨外侧,没有包绕听骨,尤其镫骨足板和脚;4.面神经管和水平半规管没有骨质缺损;5.中耳腔没有胆脂瘤,或有少量胆脂瘤。中耳腔粘膜病变较轻。
Limited to the tympanic cholesteatoma more to take external auditory canal like surgery. However, if the removal of cholesteatoma from the tympanic cavity and mastoid, the lateral wall of the tympanic cavity (SD) is not closed, postoperative external auditory canal skin and tympanic membrane from this site once again concave into the tympanic cavity, and the re-formation of cholesteatoma . Since 1975, the authors have begun to use Square Bone Slices to repair SD and name it “Upper Tympanoplasty.” Indications for surgery: 1. Bone defects due to cholesteatoma on the lateral wall of the tympanic space below 0.5 × 0.5 cm ; 2. cholesteatoma confined in the upper drum chamber, and easy to peel; 3. cholesteatoma only in the outer side of the ossicles, not surrounding the ossicles, especially the stapes feet and feet; 4. Facial nerve and horizontal semicircular canal without bone Quality defect; 5 middle ear cavity without cholesteatoma, or a small amount of cholesteatoma. Middle ear mucosal lesions lighter.