Spontaneous Regression of Osteochondroma: A Case Report

Abstract

We report a case of solitary osteochondroma in the distal femur that healed spontaneously. A 12-year-old boy was discovered to have osteochondroma of the right femur after an injury. Radiographs demonstrated a bony prominence lesion of the distal femur. MR image showed cartilage cap in the surface. We diagnosed the tumor as a solitary osteochondroma. The patient was asymptomatic and continued to be monitored without any treatment. Lateral plain radiographs of the right knee two years after the initial diagnosis indicated reduction in size those three years after demonstrated regression of the tumorous lesion. We identified Only 19 cases of spontaneous regression of a solitary osteochondroma have been reported in the past.