Ewing sarcoma forms in bone or soft tissue and is a rare disease. Incidence for all ages in the United States are one case per one million people, and in 9-10 cases per one million people in patients aged 10 to 191. Upon diagnosis, approximately one in four patients will have a form of the disease that has already spread to other parts of the body2. Ewing sarcoma patients are often treated with chemotherapy, which comes with serious side effects. Read on below.