Abstract
The simple bone cyst has been termed as traumatic bone cyst, hemorrhagic bone cyst, solitary bone cyst, and progressive bone cavity. The lesions occur most often in long bones and rarely in jaws. The cause of simple bone cyst is unknown, but numerous theories that it occurs from trauma or local disturbance of bone growth et al have been proposed.
A rare case of large simple bone cyst in a man of 16 years is presented. The patient was referred for evaluation and treatment of swelling in the right side of the mandible. There were buccal and lingual bone expansion in the right mandible. Radiographically, there was a well defined multilocular radiolucent area extending from 2 to 8 tooth-germ that had a very characteristic scalloped appearance between the roots of the right molar teeth.
The lesion was a space in the bone that the mandibular vessel and nerve were exposed freely within the cavity. Histologically, the cavity was lined by a thin fibous connective tissue membrane and had no epithelial lining. This patient had a history of trauma to the mandible when 7-8 years old.
