[Fibro-osseous lesions of the jaw and facial bones: a clinico-histologic-radiologic study of 138 cases].

A clinical-histologic-radiologic study of 138 cases of fibro-osseous lesions of the jaw and facial bones is presented. In this series, all were monostotic lesions except 8 polyostotic fibrous dysplasia. In the 130 monostotic lesions, 59 occurred in maxilla, 66 in mandible, 4 in zygoma and one in ethmoid bone. Clinically, a painless enlargement of the involved bone was the main sign. Histologically, these lesions were composed of proliferating fibrous connective tissues and various amounts of calcified tissues, but different lesion has different feature. Radiologically, fibrous dysplasia was characterized by lesions with diffuse blending. The other three tumors including ossifying fibroma, cementifying fibroma and fibro-osteoma were all represented by lesions with well delineated borders. In this article, Diagnosis of the fibro-osseous lesions and some questions about fibro-osteoma of the jaw and facial bones and osteofibrous dysplasia of long bones are discussed.