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肺癌的发病率有日益上升现象,在有生命统计的国家,肺癌发病率在工业发达国家有明显上升。美国从40年代起至70年代,男性肺癌死亡率上升18倍。1982年美国肺癌发病有近十三万人,按目前发展势到本世纪末,美国肺癌每年发病估计达三十万人。在我国既有肺癌发病的高发区,也有肺癌逐年上升的大城市。情况表明在我国肺癌发病在城市明显高于农村,尤其是大城市或某些工
The incidence of lung cancer has been increasing. In countries with vital statistics, the incidence of lung cancer has risen significantly in industrialized countries. In the United States from the 1940s to the 1970s, male lung cancer mortality increased 18 times. In 1982, the incidence of lung cancer in the United States was nearly 130,000. According to the current development trend until the end of this century, the annual incidence of lung cancer in the United States is estimated at 300,000. In our country, there are both high incidence areas of lung cancer and large cities where lung cancer increases year by year. The situation shows that the incidence of lung cancer in our country is significantly higher than in rural areas, especially in big cities or certain industries.