[The reemergence of a small round cell tumor with or without neural differentiation after a period of remission. ( NCI )]
UMLS (NCI) C0796549Recurrent Askin's Tumor
Recurrent Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor
Recurrent Ewing's Sarcoma/Peripheral Primitive Neuroectodermal Tumor
Recurrent Tumors of Ewing's Family
Recurrent Tumors of the Ewing's Family