1. Health
You can opt-out at any time. Please refer to our privacy policy for contact information.



Updated June 20, 2004

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
  1. About.com
  2. Health
  3. Orthopedics

©2014 About.com. All rights reserved.

We comply with the HONcode standard
for trustworthy health
information: verify here.