Peripheral osteoma of the mandible mimicking an ectopic condyle: a case report

Osteoma is an uncommon benign neoplasm composed of mature bone and the growth is slow and continuous. The case of a 46-year-old man is presented. He presented with a large swelling on the left side close to the temporomandibular joint. He had suffered an accident with trauma to the head when he was 10-years. After another trauma at the age of 35 he was examined and a computed tomography revealed a radiopaque mass laterally to the left condylar neck. The osteoma gradually increased in size and resembled an ectopic condyle. The osteoma was removed surgically through an intraoral approach, and no recurrence has been observed.