Abstract
We experienced three cases of bilateral bronchogenic carcinoma among chromate factory workers. The multiple occurrence was diagnosed clinically in two patients, one of which was confirmed by bilateral surgery and the other by autopsy. The last case was recognized only by autopsy. Cell type was bilateral squamous cell carcinoma in two and a combination of squamous cell and small cell carcinoma in one. Until April 1981, 21 cancer patients were found among 303 chromate workers.
The facts that a high incidence of bronchogenic carcinoma is seen among chromate workers and that these three cases showed multiple occurrence strongly suggest the strong carcinogenicity of chromate compounds.
