Definition: An enchondroma is a benign tumor of cartilage. This type of tumor causes the formation of islands of mature cartilage in abnormal locations. Usually these tumors occur in the hands or in the long bones of the arms and legs. They are most often asymptomatic, and do not cause pain. If you do experience symptoms, these tumors can be removed; however, this is a risk of recurrence following surgery.
There is a syndrome called Ollier's Disease in which patients have many enchondromas. These must be carefully monitored as there is about a 30% risk of these patients developing a malignant form of the enchondroma called a chondrosarcoma.
Also Known As: Bone Island
