Ewing sarcoma is a cancerous tumor that grows in bones or soft
tissue near bones and usually affects adolescents. Named after
Dr. James Ewing, the American pathologist who identified the
cancer in the 1920s, it can develop anywhere in the body, but
most commonly affects the arms, legs, ribs, spinal column, and
pelvis. Treatment for Ewing sarcoma involves a combination of
chemotherapy, surgery, and/or radiation. With early diagnosis
and proper treatment, many kids who develop it have a good
chance of recovery. Signs and Symptoms Ewing sarcoma often goes
unnoticed or misdiagnosed as growing pains (due to its subtle,
gradual onset) or a sports injury because symptoms often mimic
those of injuries kids can get out on the field. Soreness at the
tumor site, accompanied by swelling or warmth, is common. Pain
may be worse during exercise or at night, and a tender lump may
develop in the affected area a few weeks after pain begins. If
the tumor grows in a leg bone, the child may have an unexplained
limp. A low-grade f