Osteoma is a benign osteogenic lesion characterizedby the proliferation of compact or cancellous bone. Itcan be central, peripheral or extraskeletal.1 Peripheralosteomas are defined by centrifugal growth from the periosteum, while central osteomas arise centripetally from theendosteum.1,2The pathogenesis of peripheral osteoma is unclear.1 However, a common path underlying the developmental processof osteomas has been recognized: it has been supposed thata combination of a trauma and muscle activity can initiate anosteogenic reaction.3 In the course of their slow but steadyincrease in size, osteomas of the maxillofacial bones remainasymptomatic until they attain sufficient sizes as to causedisfigurement and/or direct interference with the normalfunction of their anatomic location.We report the case of a peripheral osteoma simulatinga parotid gland tumor due to its location and size, and thepresence of infrequent clinical manifestations.
展开▼
