What is the outlook for Ewing Sarcoma ?
Certain factors affect prognosis (chance of recovery). The factors that affect prognosis (chance of recovery) are different before and after treatment.    Before treatment, prognosis depends on:         - Whether the tumor has spread to lymph nodes or distant parts of the body.     - Where in the body the tumor started.    - Whether the tumor formed in the bone or in soft tissue.    - How large the tumor is at when the tumor is diagnosed.    - Whether the LDH level in the blood is higher than normal.    - Whether the tumor has certain gene changes.     - Whether the child is younger than 15 years.     - The patient's gender.     - Whether the child has had treatment for a different cancer before Ewing sarcoma.    - Whether the tumor has just been diagnosed or has recurred (come back).        After treatment, prognosis is affected by:         - Whether the tumor was completely removed by surgery.    - Whether the tumor responds to chemotherapy or radiation therapy.        If the cancer recurs after initial treatment, prognosis depends on:         - Whether the cancer came back more than two years after the initial treatment.    - Where in the body the tumor came back.    - The type of initial treatment given.