耳硬化症的组织病理学表现为灶性骨吸收和新骨形成。其好发部位为卵圆窗的前部;若发生耳蜗或迷路周围骨内,则称为包囊性耳硬化症。在前者,如硬化灶导致镫骨关节强硬则引起传导性聋;但本病,特别是存在包囊硬化灶时亦可出现感音性聋,所以在对感音神经性聋作鉴别诊断时,必须考虑包囊性耳硬化症存在的可能,尤其是在用氟化钠治疗使活动性耳硬化灶变为非活动性时更应予考虑。用高分辨率CT对岩骨的细微骨结构进行分析是否有助 Histopathology of otosclerosis is manifested as focal bone resorption and new bone formation. Its predilection site for the front of the oval window; if the occurrence of cochlea or labyrinth around the bone, then known as cystic otitis. In the former, such as sclerosis caused by hardening of the stapes joints caused by conductive deafness; but the disease, especially in the presence of cystic sclerosis may occur when the sensorineural deafness, so the differential diagnosis of sensorineural deafness, The possibility of cystic ossification has to be considered, especially when sodium fluoride is used to make active otolaryngology inactive. It is helpful to analyze the fine bone structure of the rock by high resolution CT