Figure 1: AP radiograph of two legs in a 52-year-old man. Bone involvement is bilateral and symmetric and consists of diaphyseal and metaphyseal heterogeneous osteosclerosis (white arrow). Shape of the tibia is tubular because of thickening of the cortex on both its endosteal and periosteal aspects. Corticomedullary margins in the diaphysis are blurred, and the marrow cavity is obliterated (black arrow).