Ewing's Sarcoma is a rare type of cancer that primarily affects the bones or soft tissues around the bones. It most commonly occurs in children and young adults, typically between the ages of 10 and 20. The exact cause of Ewing's Sarcoma is not known, but it is believed to involve genetic mutations. Symptoms of Ewing's Sarcoma may include pain, swelling, and tenderness in the affected area, often resembling other conditions. Diagnosis usually involves imaging tests like X-rays or MRIs, followed by a biopsy to confirm the presence of cancer cells. Treatment often includes a combination of chemotherapy, radiation therapy, and surgery.