Methods To compare the findings on CT scan and during operation in 238 cases with middle ear cholesteatoma proved by mastoidotympanectomy and post-operation pathological examination.

• 方法对238例经手术及病理证实的中耳胆脂瘤的CT征象与手术所见进行对照研究。结果(1)CT诊断胆脂瘤的敏感性最高在上鼓室(81.；25%25)；最低在乳突(50%25)。