Osteoma of the mastoid is a rare benign bone-forming tumor composed by bone tissue. It is a slow growing tumor that is kept stable for years. Normally it is asymptomatic, although it may cause cosmetic deformities most of the time. Its differential diagnosis presents mostly temporal bone isolated lesions, such as monostotic fibrous dysplasia and osteoid osteoma. In the present study the authors make a review of the literature on osteoma of the mastoid and describe one case.
osteoma; mastoid bone
