Ewing sarcoma most commonly affects people who are 10 to 20 years old. Ewing sarcoma is a type of cancer that develops in the body’s supporting tissues. Bone sarcomas and soft tissue sarcomas are the two main types. Ewing sarcoma usually occurs in bone. It most commonly develops in the: pelvis bone (hips); thigh bone (femur) and shin bone (tibia). However, the condition can also develop in the soft tissues surrounding the bone or joint. This type of Ewing sarcoma is known as extraosseous, which means outside the bone.
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