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胆脂瘤原先是鼓膜外层内侧角蛋白的良性积聚,外围结缔组织膜性基质,存在于中鼓室、乳突或鼓膜各层内。婴儿胆脂瘤来自位于中耳的上皮者称中耳胆脂瘤:位于鼓膜各层内部者称鼓膜内胆脂瘤,犹似小珍珠样囊肿埋于鼓膜内,如能早期发现,鼓膜内胆脂瘤很容易被切除,而不象凶险的中鼓室胆脂瘤那样有较高的复发率。为防止中耳结构广泛破坏,要求在鼓膜穿孔和慢性耳
Cholesteatoma was originally a benign buildup of the medial side of the tympanic membrane keratin, a peripheral connective tissue membranous matrix present in the tympanic, mastoid or tympanic membrane layers. Baby cholesteatoma is located in the middle ear from the middle of the said middle ear cholesteatoma: located in the inner layers of the tympanic membrane called tympanic membrane cholesteatoma, still like a small pearl like cyst buried in the tympanic membrane, such as early detection, tympanic membrane liner Lipomas are easily resected and do not have the same high recurrence rate as an aggressive midgut cholesteatoma. To prevent extensive destruction of the middle ear structure, the perforation of the tympanic membrane and the chronic ear are required