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American Journal of Epidemiology Vol. 128, No. 1: 64-73
Copyright © 1988 by The Johns Hopkins University School of Hygiene and Public Health

research-article

ADENOCARCINOMA OF THE STOMACH AND EXPOSURE TO OCCUPATIONAL DUST

WILLIAM E. WRIGHT, LESLIE BERNSTEIN, JOHN M. PETERS, DAVID H. GARABRANT and THOMAS M. MACK

Department of Preventive Medicine, University of Southern California School of Medicine 1420 San Pablo Street, B-306, Los Angeles, CA 90033

Send reprint requests to Dr. John Peters at this address

The authors studied 1,342 cases of adenocarcinoma of the stomach identified by a population-based cancer registry in Los Angeles County, California. The cases were males aged 20–64 years first diagnosed between 1972 and 1982. To determine whether exposure to occupational dust increased the risk of developing stomach cancer, occupational titles were rated for the likelihood of exposure to various kinds of dust. Men who worked in dusty jobs had a risk for developing stomach cancer 1.3 times that of unexposed men (95% confidence interval = 1.2–1.4). The association of exposure to dust with stomach cancer was stronger at higher levels of exposure. The risk was not uniform throughout the stomach: the highest risk (1.8 times that of unexposed men) was found for the antrum/pylorus. At that site, exposure to mineral dust carried the greatest risk for cancer (3.7 times the risk for unexposed men). The highest risks from dust exposure were observed in blacks. Risk was related to race, socioeconomic status, and immigrant status, but these factors did not entirely explain the association with dust exposure. The observed relation between dust exposure and stomach cancer is consistent with results of previous mortality and case-control studies of cancer in men who worked in dusty occupations. Ingested dust may be one factor in the etiology of adenocarcinoma of the stomach.

air pollutants; occupational; minerals; occupational diseases; pyloric antrum; stomach neoplasms


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