[Epidemiology of tumors of the lung].

Examination of tumour epidemiology shows that among all cancers, lung cancer is the one growing most rapidly. Oncogenous substances are examined, particularly tobacco and atmospheric pollutants in general; the oncogenous action of silica is also interesting. Lung cancer is growing particularly in the female sex, a fact which is correlated with the increase of women smokers and the use of oestroprogestinics.