Ewing's Sarcoma  What is Ewing's sarcoma?  Ewing's sarcoma is a
malignant tumor of the bone. It may occur in any bone, however
it most commonly affects the pelvis, tibia (shin), fibula
(shin), and femur (thigh). Occasionally, Ewing's sarcoma may
occur in soft tissues, not bone. This is called "non-osseous
Ewing's sarcoma." Ewing's sarcoma is a rare malignancy, which
usually occurs in children and young adults less than age 30. It
is not known what causes the tumor but it is not hereditary nor
is it contagious. Nothing you have done or not done is
responsible for your child's tumor.  What are the symptoms of
Ewing's sarcoma?  Symptoms are often present for months before a
diagnosis is made. Pain, tenderness, and swelling are the usual
presenting symptoms. It may take awhile for the tumor to become
large enough to cause symptoms and may become pushed out of the
bone and into the surrounding soft tissues. Many children
diagnosed with Ewing's sarcoma may have a recent history of
fever, weight loss, and not feelin