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美国癌瘤协会估计,在美国1973年肺癌死亡为72,000人(男57900,女14100)。肺癌的发生率与死亡率迅速增长,每4名癌死亡者中就有一名是由于肺癌致死的。根据Connecticut州同种人口统一肿瘤登记处统计,男性支气管肺癌从1935年的8.7/10万人口增长到1959年的46.7/10万人口:即增长436％。在加利福尼亚,肺癌死亡率亦迅速上升,男性增长了14倍,即从1920年3/10万人口增到1965年的42/10万人口。女性肺癌死亡率增长较慢。男与女之比接近7:1。大部分男病人的年龄在45～75岁之间。大多数病组报告其五年生存率为5～8％。40岁以下男性肺癌病人约占3％。首次就
The American Cancer Society estimates that there were 72,000 lung cancer deaths in the United States in 1973 (male 57,700, female 14,100). The incidence and mortality of lung cancer have rapidly increased. One in four cancer deaths is due to lung cancer. According to the Connecticut Population and Tumor Registry of the Same Population, male bronchial lung cancer increased from 8.7 per 100,000 in 1935 to 46.7 per 100,000 in 1959: an increase of 436%. In California, the death rate of lung cancer has also risen rapidly. Males have increased 14 times, from 3/100,000 in 1920 to 42/100,000 in 1965. Female lung cancer mortality rates have been growing slowly. The ratio of male to female is close to 7:1. Most male patients are between 45 and 75 years of age. Most disease groups report a 5-year survival rate of 5-8%. About 40 percent of male lung cancer patients account for about 3%. For the first time