The symptoms of Ewing sarcoma depend on the size and location of the tumor. These are some possible symptoms of Ewing sarcoma:
Pain at the site of the tumor, especially if it is near nerves or inside the bone
Swelling or a lump in the area of the tumor, which may feel warm
These symptoms may or may not be the result of Ewing sarcoma. If you or your child has any of these symptoms, you should see a doctor to be evaluated for cancer as well as for more common problems such as infection or joint disorders.