Combination of the Skeletal and Extra-Skeletal Craniofacial Osteomas: A Case Report

Osteoma is a slow-growing benign osteogenic tumor. Osteomas can be central, peripheral, and extra-skeletal. The prevalence of extra-skeletal osteoma often found in muscles is very low. Osteomas unrelated to the syndrome often occur as solitary tumors, but sometimes multiple osteomas are unrelated to the syndrome. Here, we report a rare non-syndromic craniofacial osteoma, a combination of skeletal and extra-skeletal types. During mastication, the patient complained of dull pain in the right maxillary molar area. Panoramic and CBCT showed multiple homogenous opacities on the right mandibular body and condylar neck, as well as in the right infratemporal fossa and masticator space, having a pressure effect on the base of the skull. A biopsy of the mass on the mandibular body confirmed osteoma. The absence of the other manifestations of Gardner syndrome made the patient a rare case of multiple non-syndromic osteomas.