Osteoma in Mandibular Angle: Case Report

Osteoma is described as an osteogenic neoplasm of mature and well differentiated bone tissue that has as main pathogenic hypotheses reactions to infections and local traumas. They are classified as peripheral osteomas, also called paraosteal, periosteal and exophytic, are the most common and originate from periosteal tissue, central osteomas or endosteal, originated from medullary tissues, and extra skeletal osteomas with soft tissue development. To report a case of peripheral osteoma with mandibular angle involvement, diagnosed and treated in a 30-year-old male patient. On clinical examination, a slight increase in volume was observed in the region of the right mandibular angle, absent from symptomatology, limitation of oral opening or any motor deficit. Tomographic examination showed an expansive bone lesion, densely calcified, with a sessile base and well delimited with approximately 4 cm in its largest diameter, suggesting Peripheral Osteoma. Peripheral osteomas occur more frequently in the mandible, which may affect the mandible body, angle region, condyl, corticosteroid process and sigmoid notch. There is no predilection for gender, occurring in an average age group of 36.5 years. The patient has 2 years of follow-up without stitic-functional sequelae and any signs1 of recurrence of the lesion.