Endoscope-assisted intraoral excision of osteochondroma of the mandibular condyle.

Osteochondroma (OC) is one of the most common bony lesions of the skeleton. It is rare in the maxillofacial region and reported infrequently in the literature. This lesion is considered the most common of benign tumors of the temporomandibular joint. It is usually associated with the coronoid, followed by the condyloid process. OC can affect any bone formed from cartilage and can arise spontaneously or as a result of osseous trauma. It usually protrudes from the surface of bone and is covered with cartilage. Most condylar OCs present as progressive limitation of mandibular movements, facial asymmetry, malocclusion, pain, and deviation in mouth opening. Extraoral approaches to the OCs, which are usually located on the medial pole of the condyle, provide ease of accessibility, although there is an inherent likelihood of damage to the facial nerve and scarring. The use of a transoral endoscope-assisted conservative approach for the removal of OCs produces the desired favorable esthetic and functional results.