Aneurysmal bone cysts of the skull: report of three cases.

We report three cases of aneurysmal bone cysts of the skull, a rare site for this type of lesion. The patients were 11, 15 and 44 years old, the duration of symptoms being 72, 24 and 6 months, respectively. The lesions were painful in two cases. Computed tomography in all three cases was suggestive of aneurysmal bone cysts. En bloc excision of the bone cysts demonstrated no dural involvement. There were neither mitotic figures nor any other associated pathology on histopathological examination. Two cases were recurrence free at follow-up of 8 months and 3 years, and the third patient was thought to be recurrence free at 2 years.