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近30年来,肺癌的发生率增长很快。据国外资料统计,美国纽约1931～1950年肺癌在男性病人中增加85%,同时期其它类型的肿瘤仅增加2%。女性肺癌增加68%,而同时期其它肿瘤增加15%。在英国,自1920～1954年肺癌增加8倍。Oneal等的尸检材料报告,1910～1919年肺癌发病率为1.1%,1930～1939年增至4.2%,1945～1954年增至7.8%。Nats的尸检材料报告,1927～1931年肺癌占全部恶性肿瘤的6.4%,1932～1937年增至15.8%,1957年增至23.4%。根据国内现有文献,1942～1948年北京协和医学院4,200例尸检中仅发现肺癌13
In the past 30 years, the incidence of lung cancer has increased rapidly. According to statistics from foreign countries, lung cancer increased by 85% in male patients from 1931 to 1950 in the United States, while other types of tumors increased by only 2% in the same period. Female lung cancer increased by 68%, while other tumors increased by 15% at the same time. In the United Kingdom, lung cancer increased 8 times from 1920 to 1954. Oneal et al reported that the incidence of lung cancer was 1.1% from 1910 to 1919, and it increased to 4.2% from 1930 to 1939 and increased to 7.8% from 1945 to 1954. Nats autopsy material reported that lung cancer accounted for 6.4% of all malignant tumors from 1927 to 1931, increased from 15.32 to 1937 to 15.8%, and increased to 23.4% in 1957. According to the existing domestic literature, only lung cancer was found in 4,200 autopsies at the Peking Union Medical College from 1942 to 1948. 13