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[On cancer mortality in the German Democratic Republic. Regional differences and time trends of mortality of malignant neoplasms of stomach, colon, rectum, breast, and uterus, 1960--1969].

Mortality of maligant neoplasms of stomach (ICD 151; 84 529 deaths), colon (ICD 153; 13237 deaths), rectum (ICD 154; 13687 deaths), breast (ICD 174; 24400 deaths), and uterus (ICD 180--182; 25308 deaths) in the GDR in the years from 1960 to 1969 is described. There are regional differences of mortality which cannot be explained by demographic and diagnostic factors solely but suggest that there exist real differences of cancer risk. Mortality of stomach cancer is relatively low in the middle regions (Berlin, Frankfurt, Potsdam, Cottbus) and in the region of Erfurt and remakably high in the regions of Schwerin, Neubrandenburg, Gera, Leipzig and Karl-Max-Stadt. Mortality of colonic cancer is highest in Berlin, lowest in Schwerin, Neubrandenburg and Gera. Mortality of rectum cancer shows minor regional differences and another distribution than colonic ancer. Mortality of breast cancer is extremely high in Berlin and very low in Suhl. Mortality of cancer of the uterus reaches high levels in Neubrandenburg and is very low in the region of Karl-Marx-Stadt. In the period 1960--1969, mortality of stomach cancer has decreased whereas mortality of colonic cancer has increased. Mortality of rectum neoplasm remained constant. The time trend of mortality of breast cancer demonstrates regional differences and has increased somewhat in th GDR. Mortality of uterus cancer has slightly decreased. Regional differences and time trends of cancer mortality in the GDR suggest the influence of environmental factors.