FIGURE 3.

A 17-year-old male suffered pathologic fracture on the left shaft of humerus (case 5). The anteroposterior plain film (A) shows the “ground-glass” opacities in the humeral shaft and incomplete cortex. He was treated with internal fixation and was proved to have suffered FD. The anteroposterior plain film (B) shows internal fixation in the humerus shaft with the heterogenesis in the medulla and cortex 3 years later, during his second operation with the recurrence of FD. The anteroposterior plain film (C) shows further osteolytic destruction in the medulla and cortex after 6 months. He underwent the third operation and the final pathologic findings indicated the malignant change. FD = fibrous dysplasia.