Osteofibrous dysplasia

an ossifying fibroma of the tubular bones, which is closely related to fibrous dysplasia. This disorder occurs almost exclusively in the tibia, although the fibula and other sites may also be involved in rare cases. The lesion is usually located in the anterior aspect of the tibia. Slight or moderate anterior or anterolateral bowing of bone may be accompanied by pathologic fractures. On radiographs a hazy or ground glass appearance resembling that seen in fibrous dysplasia is common. A relationship between ossifying fibroma and adamantinoma may possibly exist in young persons.