[Histological types of lung cancer and environmental factors].

The incidence rates of different histologic patterns of lung cancer for 1950-1970 and 1981-1985 were compared at 15-30 year-intervals. The relationship between smoking, occupational hazards and distribution of histologic patterns of lung cancer was studied, too. The study failed to establish any correlation between histologic pattern of lung cancer and said factors. The share of certain histologic patterns has remained unchanged within the last 15-30 years.