Ewing family of tumors

Also known as: Ewing’s sarcoma, Sarcoma, Ewing’s, Extraosseous Ewing’s sarcoma, Primitive neuroectodermal tumor (PNET), EFT, Askin’s tumor
Ewing's sarcoma is a rare bone tumor that occurs most often in adolescents. It may also arise outside of the bone in soft tissue (extraosseous Ewing's sarcoma). Ewing's sarcoma is related to another type of tumor known as primitive neuroectodermal tumor (PNET). Researchers have learned that both of these tumors arise from the same primitive cell, and now refer to these tumors as the Ewing family of tumors (EFT). This general term encompasses Ewing's sarcoma of bone, extraosseous Ewing's sarcoma, primitive neuroectodermal tumor and Askin's tumor (a tumor of the chest wall).

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