What is Ewing Sarcoma? (Definition)
According to the National Cancer Institute, Ewing sarcoma is a type of tumor that forms from a certain kind of cell in bone or soft tissue. Ewing sarcoma may be found in the bones of the legs, arms, feet, hands, chest, pelvis, spine, or skull. Ewing sarcoma also may be found in the soft tissue of the trunk, arms, legs, head and neck, abdominal cavity, or other areas.
Ewing sarcoma is most common in adolescents and young adults.
Ewing sarcoma has also been called peripheral primitive neuroectodermal tumor, Askin tumor (Ewing sarcoma of the chest wall), extraosseous Ewing sarcoma (Ewing sarcoma in tissue other than bone), and Ewing sarcoma family of tumors.
Signs and symptoms of Ewing sarcoma include swelling and pain near the tumor.
These and other signs and symptoms may be caused by Ewing sarcoma or by other conditions. Check with your child’s doctor if your child has any of the following:
- Pain and/or swelling, usually in the arms, legs, chest, back, or pelvis.
- A lump (which may feel soft and warm) in the arms, legs, chest, or pelvis.
- Fever for no known reason.
- A bone that breaks for no known reason.
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