외이도 골종

Osteoma of the external auditory canal is an uncommon slow growing benign tumor which may arise from the outer half of the bony canal. It is a characteristically unilateral, pedunculated hard mass. In the temporal bone, osteoma commonly arise in the external auditory canal. Osteoma is usually asymptomatic until their large size results in conductive hearing loss or ear fullness. CT scan is helpful to delineate the size, location and relationship of adjacent structure. The best way to treat is surgical removal under good exposure. In this case, we have experienced a osteoma of external auditory canal in 33-years-old male. We report this case with literature review. (J Clinical Otolaryngol 2002;13:213–215)