title: [Multiple primary malignant tumors].
mesh_terms: D000367:Age Factors; D000368:Aged; D001943:Breast Neoplasms; D001984:Bronchial Neoplasms; D005260:Female; D005859:Germany, East; D006801:Humans; D007414:Intestinal Neoplasms; D007417:Intestinal Polyps; D007822:Laryngeal Neoplasms; D007889:Leiomyoma; D009378:Neoplasms, Multiple Primary / Q000453:epidemiology / Q000209:etiology; D010051:Ovarian Neoplasms; D012004:Rectal Neoplasms; D012509:Sarcoma; D012878:Skin Neoplasms; D014594:Uterine Neoplasms
vernacular_title: Beitrag zum Problem der primär multiplen malignen Tumoren