The Role of Sputum Cytology in Occupational Medicine - Supplementary Report (1975)

This report updated an earlier 1972 report on sputum cytology, the examination of coughed-up cells, as a way to check workers exposed to substances that may cause lung cancer. It was a review of other studies, not new research. It described a study of mostly underground uranium miners that followed changes in cells before 34 cases of carcinoma in situ and 17 of invasive lung cancer. The author said that study did not adequately describe the whole group observed. It also described studies of workers exposed to bis(chloromethyl) ether, and one by Frost and colleagues that included 112 asbestos workers, smokers and non-smokers. The percentages given for the asbestos workers are garbled in this copy of the text and cannot be read with certainty. The author argued that requiring sputum tests for coke oven workers would be very difficult because medical criteria for what to do with abnormal results did not exist. The author concluded that sputum cytology remained a highly promising method for early detection of lung cancer and for studying exposed groups. The author also listed limits of the method: few qualified laboratories, unproven automated techniques, and few facilities able to locate tumors in patients whose sputum was positive but whose X-rays were negative.

We wrote this plain-English summary from the full article with the help of AI, and a second AI model checked each sentence against the article. It is not the authors' wording; the abstract and the article are their own account.

From J-M's medical library

This copy comes from the Johns-Manville medical library. It was among the papers J-M kept in its medical library without an index entry.

We publish this piece for research and commentary: it shows what the medical literature in a leading asbestos company's own library said on the subject, and when. Our summary above is our own reading of it. The copyright stays with the publisher.