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迷路破坏则骨导听力亦遭受损害,自不难理解,但也有极少数报告骨导听力不受影响或由于手术治疗反而骨导听力有所改善者。自从Sade-Sadowsky氏等1955年报告内耳开窗术时并发膜迷路损伤的病例保存了听力的报导以来,人们对内耳功能有了新的认识。继之,Pederson氏1969年报告一例迷路切除术后仍保存了听力的病例,同年Phelps氏报告3例胆脂瘤患者,虽然并有迷路破坏,而骨导听力亦获保存。作者们报导8例(9耳)主诉耳漏、眩晕患者,经手术证实有迷路破坏的胆脂瘤7例、慢性中耳炎1例。迷路破坏程度,轻者在水平半规管有大头针头大瘘
Lost damage to the bone conduction hearing also suffered damage, since it is not difficult to understand, but there are very few reports of bone conduction is not affected or due to surgical treatment of bone conduction hearing improvement. Since Sade-Sadowsky’s 1955 report of intraocular fenestration with lesions of the membranous labyrinth has preserved hearing, a new understanding has been given to inner ear function. Then, in 1969, Pederson reported a case of hearing loss after laparotomy. In the same year, Phelps reported 3 cases of cholesteatoma, and although it had lost its way and bone conduction hearing was preserved, The authors reported 8 cases (9 ears) complained of otorrhea, vertigo, 7 cases of labyrinthine cholesteatoma confirmed by surgery, and 1 case of chronic otitis media. Lost the degree of destruction, the light in the horizontal semicircular tube with a large head fistula