On the role of some environmental factors in the incidence of lung cancer

Recently, the attention of all scientists dealing with the problems of oncology has been attracted by the incidence and mortality rates from lung cancer, because they give a noticeable and significant increase in comparison with similar indicators for other localizations of cancer. Referring to Pasqua's data, AI Savitsky writes: “In England and Wales, lung cancer died in 1949 è 25 times more than in 1900. In London, the mortality rate of men from lung cancer is 60% higher than in the whole the country as a whole and 2-2.5 times higher than in rural areas. " Graham reports that lung cancer deaths increased 10-fold in the United States from 1930 to 1950; according to the WHO, the incidence of lung cancer in the United States from 1935 to 1955 increased by 500%.