Polyostotic lesions compatible with osteofibrous dysplasia. A case report.

An 18-month-old girl with lesions in the cortex of the bilateral tibiae and ulnae and right fibula is reported. The lesion in the right tibia disappeared after curettage and xenogeneic bone grafting, and the other lesions disappeared spontaneously by the age of 12 years. All lesions involved the bone cortex. The right tibia lesion exhibited the histopathological features of "zonal architecture" and a osteoblast rim formation around the trabeculae. We consider that osteofibrous dysplasia can involve systemically any long bone.