Well-defined lytic and slightly expansile lesions with internal calcification and endosteal thinning in the scapular and hand. Internal calcifications tend to resemble “rings and arcs” of cartilage calcification. Also, these frequently occur in the humerus, femur, tibia and ribs. Rapid growth of lesions or pain not related to a pathologic fracture may suggest malignant transformation. Multiple enchondromas occur in Ollier's disease (enchondromatosis) with a greater incidence of malignant transformation because there are more lesions present.

Radiographer: TSRM Fabio Imola