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从临床观点看,中耳胆脂瘤可概括地认为病变是复层鳞状上皮,并可产生非自洁性的大量角蛋白。从组织病理上说,一视同仁,似一典型的上皮样囊肿,平时即用胆脂瘤或角质瘤一词,但实际上这种胆脂瘤性病变并非单一实体,它有收缩袋和皮样囊肿之分,二者均有易复发倾向、伴随性炎症及压力性骨疡。其来源可能不同故处理各异。“浅收缩袋”之底部容易检见,常可自洁:另一些患者则有角蛋白积留且发生感染,可于侧卧位在显微镜下吸引治疗;但对位置“较深”,特别是感染时间长者,则需经手术从其空洞内剥除并行鼓膜修补术,可在鼓膜前部置金属通气管,术中还应清除鼓室窦区的感染死腔(即面神经嵴之外侧部),此处骨质常呈软性改变应给予刮除。80%感染收缩袋均有砧骨损害,除去后即可看到
From a clinical point of view, middle ear cholesteatoma can be generally considered lesions stratified squamous epithelium, and can produce a large number of non-self-cleaning keratin. Histopathologically speaking, the same, like a typical epithelioid cyst, usually that the use of the word cholesteatoma or keratinum, but in fact the cholesteatoma is not a single entity of the lesion, which has shrinkage and dermoid cysts The points, both prone to recurrence tendency, associated with inflammation and stress ulcer. The origin may vary from one case to another. The bottom of the “shallow contraction bag” is easily detectable and is often self-cleaning: while others have keratin buildup and an infection that can be treated under the microscope in the lateral decubitus position; however, the “deeper” position, especially The infection of the elderly, you need to be removed from the cavity by surgery to repair the tympanic membrane in parallel with tympanic membrane in front of the metal ventilation tube should also clear the tympanic sinus surgery dead space (that lateral facial crest) , Here often have soft changes in bone should be given curettage. 80% infected contractions bags have incus damage, can be seen after removal