ABSTRACT
It is more common in males than females and in Caucasians than Africans Americans . The peak incidence of Ewing’s sarcoma is between ages 10 and 20 years, with 30% of cases occurring in children under age 10 and only 5% of cases in adults over 25 years of age . About 200 new cases are diagnosed each year (Ries et al . 1999) .
