Multiple Fibro-Osseous Lesions of The Mandible

Woman had two distinct radiolucent lesions on radiographic examination. The first demonstrated a cystic image involving the apex of tooth #46; the other involved the periapical region of teeth #43 and #44. The lesion surrounding tooth #46 contained a liquid of citrine aspect and a fibrous capsule. The clinical findings suggested a diagnosis of simple bone cyst involving tooth #46 and fibro-osseous dysplasia for the lesion involving the premolars. Microscopically, the molar lesion showed fibrous connective tissue with a capsular aspect, hemorrhagic areas, trabecular bone, and some cells with round nuclei and other with fusiform nuclei. Histopathological evaluation confirmed a diagnosis of aneurysmal bone cyst associated with ossifying fibroma. Microscopically the premolar lesion had the deposition of bone matrix, some cells with round nuclei, and others with fusiform nuclei. Histopathological analysis established a diagnosis of ossifying fibroma. Supported by CNPq:133509/2012-5.