4hxtract. A tolal of 841 reviewed cases and 75 reported cases ol' fibro-osseous lesions of the jaws, excluding (he giant cell group, are analyzed willi regard lo elinical. radiographic, and hislologic features. Precise criteria for Ihe differential diagnosis of fibrous dysplasia, ossifying fibroma, gigantiform cemenloma, chronie diffuse selerosing osteomyelitis, foeal sclerosing osteomyelitis, and periapical cementoma have been ptese/ited with emphasis on radiographic and behavioral features.