Treatment of pelvic aneurysmal bone cysts in two children: selective arterial embolization as an adjunct to curettage and bone grafting.

Treatment options of aneurysmal bone cysts include complete resection, curettage, curettage with bone grafting, selective arterial embolization (as a primary treatment or preoperative adjuvant therapy), and percutaneous injection of fibrosing agent. Treatment in pelvic locations is difficult because of the relative inaccessibility of the lesions, the proximity of the lesions to neurovascular structures, and the vulnerability of the acetabulum. Herein, we present 2 pediatric cases of pelvic aneurysmal bone cysts successfully treated with curettage with bone grafting following preoperative selective arterial embolization.