Abstract
A 63-year-old woman had a large, hard tumor surrounding her left elbow joint. She reported that it had been growing slowly since the 1950s. The tumor was not painful, and there was only a slight restriction of movement. The bone scan showed involvement of the left side of the body, largely confined to the upper limb. Radiographs of the left arm showed multiple radiolucent lesions surrounding the elbow joint. A diagnosis of Ollier’s disease was made. This comprises enchondromatosis involving predominantly one side of the body. The bone scan clearly documents increased bone metabolism in Ollier’s disease.