title: Ewing's tumor in brothers. An unusual observation.
abstract: Ewing's sarcoma in two brothers is described. This has not been previously reported in the literature. Hypotheses which might explain this association are discussed. Genetic factors predisposing to the development of neoplasia are a very attractive possibility, although viral factors and chance association cannot be excluded.
mesh_terms: D000293:Adolescent; D002648:Child; D006615:Hip; D006801:Humans; D007866:Leg; D008297:Male; D009857:Oncogenes; D012512:Sarcoma, Ewing / Q000209:etiology / Q000235:genetics*; D012983:Soft Tissue Neoplasms / Q000235:genetics*