Bilateral symmetrical Ollier disease and Tc-99m MDP bone scintigraphy

Enchondromas are benign cartilaginous neoplasms of bone. Ollier disease is a nonhereditary disorder characterized by multiple enchondromas with a predilection for unilateral distribution. Ollier disease is usually detected in children younger than 10 years of age. Enchondromas tend to occupy the diaphyseal region in the short tubular bones and the metaphyseal region in the long bones. Notable clinical problems are progressive shortening of the involved extremity, angular deformity, pathologic fractures, and malignant transformation. Radionuclide bone scanning is one method used to assess lesions depicted on radiographs or MR images that are presumed to be enchondromas.