外耳道骨瘤罕见,我们曾发现两例,因骨瘤填满骨性外耳道并发中耳乳突胆脂瘤,特报道如下。例1,女性,57岁,农民。因左外耳道肿物进行性阻塞,听力减退约10年,间歇性流脓2年,于1973年8月29日入院。局部检查:左外耳道后壁有一半球形肿物,质硬,表面皮肤正常。听力呈混合性聋。X线摄片:左鼓窦区有2×2cm骨质破坏的透亮区,骨 External auditory canal osteoma is rare, we have found two cases, due to bone tumors filled with bony external auditory canal cholesteatoma, especially reported as follows. Example 1, female, 57 years old, farmer. Because of the left external auditory canal mass obstruction, hearing loss for about 10 years, intermittent pus 2 years, was admitted to hospital on August 29, 1973. Local examination: left posterior wall of the posterior wall of a spherical tumor, hard, normal skin surface. Hearing mixed hearing loss. X-ray: the left drum area has 2 × 2cm bone destruction of the translucent area, bone