Silicosis and risk of lung cancer or lung tuberculosis: a cohort study.

This is a study of cancer mortality, cancer incidence, and incidence of lung tuberculosis among cases of silicosis reported to the National Swedish Pneumoconiosis Register during 1959-1977. Two occupational categories were extracted--"mining, tunneling, and quarrying" (n = 284) and "iron and steel foundries" (n = 428), respectively. Control groups were drawn from a national register of persons undergoing periodic health examinations with regard to silicosis risk.