Ewing sarcoma bone tumors have an onion-skin appearance on imaging scans. This happens because the tumors stimulate the growth of a membrane that surrounds the bones. Ewing sarcoma is a bone cancer ...

Ewing sarcoma is a type of bone cancer. However, it can also begin outside of the bones in the body’s soft tissues. In some cases, Ewing sarcoma may begin in the soft tissues and muscles rather than ...

It can develop throughout various locations in the body. Ewing tumors may occur in any bone or soft tissue, but the most commonly affected sites are the pelvis and the long bones of the legs and arms.