Ewing Sarcoma

May 15, 2015 -

Ewing sarcoma is a cancer that occurs primarily in the bone or soft tissue. It can occur in any bone, but is most often found in the extremities and can involve muscle and the soft tissues around the tumor site. Ewing sarcoma cells can also spread (metastasize) to other areas of the body, including the bone marrow, lungs, kidneys, heart, adrenal gland and other soft tissues.

It accounts for about 2–3% of childhood cancers. About 150 children and adolescents are diagnosed with Ewing sarcoma each year in the U.S. It is the second most common malignant bone tumor in children and adolescents and accounts for about 30% of pediatric bone cancers. Ewing sarcoma most often occurs in children between 10- and 20-years-old. Prior to adolescence, the number of males and females affected are equal.

After adolescence, however, the number of males affected is slightly higher than the number of females. It has been suggested that the increased rate of growth among males during adolescence may account for this increased incidence.

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