Extensive calvarial tuberculosis: rare complication of tuberculous mastoiditis.

Tuberculous mastoiditis is a well-documented entity with decreasing incidence in recent years. Tuberculous osteitis of the skull is even rarer. The case of a 58-year-old male with tuberculous mastoiditis complicated by extensive tuberculous osteitis of the skull is presented. This case serves to demonstrate both the difficulty in establishing the diagnosis of tuberculosis and the potentially disastrous consequences of the disease.