Aneurysmal bone cyst of the skull.

Aneurysmal bone cysts rarely affect the skull. Thirty-six cases including four reported in this paper are reviewed. The condition usually affects children and young adults and progresses rapidly. It may result in raised intracranial or intraorbital pressure. Complete excision of the mass is the treatment of choice, but if not feasible curettage followed by low dose radiotherapy is effective. As the prognosis in this condition is good, prompt diagnosis and early treatment are of utmost importance.