하악골에 발생한 동맥류성골낭종의 치험례

Aneurysmal bone cyst of the mandible : report of a case

The aneurysmal bone cyst is a benign, solitary lesion of bone and is not true cyst in that it does not have an epithelial lining. The etiology is still unknown and controversial. It is usually found in the young patients under 20 years of age and shows no marked sex predilection. The lesion is most common in the vertebrae and the long bones, but it is uncommon in the jaws. The common clinical presentation is swelling of the overlying soft tissues due to bony expansion, which may be rapid in onset. Pain or tenderness on palpation may or may not be a concomitant symptom. Microscopically, the principal feature of the lesion is the replacement of bone by spongy, fibro-osseous tissue which contains blood-filled cavernous or sinusoidal spaces as well as multinucleated giant cells with a patch distribution. This lesion has successfully been treated by curettage, local resection, cryosurgery, and radiation therapy. The propensity for recurrence in the jaws is less than in other bones and the conservative treatment is favored by most authors. Close follow-up is necessary because of the potential for recurrence. This is a case report of aneurysmal bone cyst occurred in the left ramal area of 16-year old male patient. He was treated by surgical curettage. After 5 months of follow-up check it revealed good bony healing and no recurrence on the operation site.