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近三十年来,枝气管肺癌(以下簡称肺癌)的病发率及死亡率在多数国家均逐年增多,尤其是男性肺癌更为显著增加。据瀨木氏統計,1950年——1957年間24个国家男性肺癌的死亡率(每10万人口中),如法国、意大利在8年間增加将近一倍。他如英国、美国、以色列、西德、芬兰、挪威、瑞典等国亦增加一半。在日本男性肺癌的死亡率虽比欧美各国为低,但在这8年間却为显著上升,由1950年的2.68至1957年則增加为7.33。該氏并
In the past 30 years, the incidence and mortality of bronchial-tubular lung cancer (hereinafter referred to as lung cancer) have increased year by year in most countries, especially in males. According to Yoshiki statistics, the mortality rate of male lung cancer (in every 100,000 population) in 24 countries from 1950 to 1957, such as France and Italy, nearly doubled in eight years. He also increased by half in countries such as the United Kingdom, the United States, Israel, West Germany, Finland, Norway, and Sweden. Although the mortality rate of male lung cancer in Japan is lower than that of Europe and the United States, it has risen significantly during the eight years from 2.6 to 1957 in 1950 to 7.33. The parallel