title: [Multiple primary malignant tumors: study of 80 cases].
abstract: The authors made a review of 3670 cancer patients looking for multiple primary malignant tumors. They found 80 cases (2.17%) of multiple tumors suggesting that they are caused mainly by common etiologic factors and/or a genetic predisposition and secondarily by the measures employed in the treatment of the first tumor.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000139:chemically induced / Q000453:epidemiology* / Q000209:etiology; D009381:Neoplasms, Radiation-Induced; D013030:Spain
vernacular_title: Tumores malignos multiples primarios: estudio de 80 casos.