Aneurysmal bone cyst treated by high-energy, low-dose radiation therapy: a case report.

Aneurysmal bone cysts (ABC) are frequently treated surgically, but recurrence is not uncommon and surgery is hazardous when the lesion is large and adjacent to the growth plate. High-energy, low-dose radiation to an 8-year-old girl with ABC of the distal tibia was found to be successful, with no recurrence during the five-year follow up. No complications have ensued, and excellent function has been sustained. Further evaluation of this radiation treatment is important for similar situations in which surgical excision of ABC may involve high risk.