Ewing's sarcoma is a type of cancer that occurs most often in and around the bones. Ewing's sarcoma is rare and typically affects children and young adults, though it can occur at any age.
Ewing's sarcoma can occur in any bone, but most often begins in the leg bones and hipbones, as well as the bones in the arms, chest, skull and spine. Ewing's sarcoma rarely occurs in the soft tissues of the arms, legs, abdomen, chest, neck and head.
Ewing's sarcoma care at Mayo Clinic