Bilateral cemento ossifying fibroma: A rare case report

Cemento-ossifying fibroma (COF) is considered a benign osseous tumor, very closely related to other lesions such as fibrous dysplasia, cementifying periapical dysplasia or cemento- osseous florid dysplasia, however, creating its own entity in the 1992 WHO classification. Here with we present a case of bilateral central ossifying fibroma of left maxillary and right mandibular alveolus in a 35-years old woman. Intraorally, it presented as solitary dome shaped swelling in the left upper posterior teeth region and another diffused swelling in the fourth quadrant. Radiographic examination revealed the presence of well defined roughly spherical shaped radiopacity with radiolucency at certain areas having sharp radiolucent rim surrounded by sclerotic border. Radiographs of the right mandibular teeth region revealed the presence of well defined mixed radiolucent-radiopaque area having thin radiolucent rim followed by thick sclerotic margin. No genetic correlation could be establishes between the two lesions. As bilateral cemento-ossifying fibroma is a rare entity, we present such a case with different radiographic appearance, using various radiographic techniques.