**4.4 Treatment**

The treatment of choice for ABCs is complete surgical resection, with endoscopic sinus surgery becoming the gold standard of management of aneurysmal bone cyst. Complete clearance of ABC is sometimes impossible especially at the skull base. In difficult extensive cases, further surgical procedures to debulk the lesion may be needed. Radiotherapy has been reported in cranial ABCs for refractory cases in adults. Radiotherapy has a limited success with an accepted risk of sarcomatous degeneration [9]. However, as there is a paucity of information for ethmoidal lesions particularly in children, there exists no clear consensus for radiotherapy [13].
