title: Chromosomal abnormalities in secondary Ewing's sarcoma.
mesh_terms: D002648:Child; D002904:Chromosomes, Human, 21-22 and Y; D005260:Female; D006801:Humans; D007945:Leukemia, Lymphoid; D009378:Neoplasms, Multiple Primary; D012512:Sarcoma, Ewing / Q000235:genetics*; D014178:Translocation, Genetic