[Aneurysmal bone cyst, following a skull trauma. A case report.].

Aneurysmal bone cysts are benign lesions of bone occuring both as a primary lesion and associated with other lesions. Involvement of the skull is rare and no report of such a lesion of the skull base following a skull trauma could be found. This report describes such a case with a long term follow-up. This case demonstrates the radilogical features of skull aneurysmal bone cyst and the difficulty in pathological diagnosis.