Osteosarcoma and Ewing sarcoma are two of the most common malignancies of bone tissues present in children. Osteosarcoma treatment usually involves surgery and chemotherapy and Ewing sarcoma treatment typically begins with chemotherapy only. Dr. James Ewing who described the tumor in the 1920’s distinguished the tumor from Osteosarcoma on the basis that it was responsive to radiotherapy. Ewing sarcoma is a radiosensitive tumor, so historically radiotherapy is been primarily used as a treatment for Ewing sarcoma. Osteosarcoma tumors aren’t easily killed by radiations, so radiotherapy usually doesn’t play many roles in Osteosarcoma treatment. Osteosarcoma, the more comm...