Selective arterial embolization in the treatment of an aneurysmal bone cyst of the pelvis.

This case report deals with an aggressive aneurysmal bone cyst of the pelvis in a 20-year-old man causing considerable destruction of the left ilium and the anterior column of the acetabulum, with extension into the pelvis. The treatment of large pelvic aneurysmal bone cysts is challenging because of local destruction of adjacent structures and because of the risk of severe intraoperative bleeding. Therefore selective preoperative embolization may be a valuable tool in the management of aneurysmal bone cysts.