They belong in the Ewing's sarcoma family of tumors. Influencing factors These tumors are very uncommon in people of African and Asian descent. These tumors are rare in children. These tumors may occur in childhood, or more commonly, in adolescence. Certain patients may also benefit from blood stem cell transplantation or an autologous bone marrow transplant.
Autologous transplants use the patient's own marrow.
In children with localized disease, long-term survival rates range from 60 and 75 percent. If the disease has spread to other parts of the body, survival rates are less than 30 percent. Better understanding of the tumor helps physicians better treat the disease.