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Article
September 5, 1986

Agricultural Herbicide Use and Risk of Lymphoma and Soft-Tissue Sarcoma

Author Affiliations

From the Epidemiology and Biostatistics Program, National Cancer Institute, Bethesda, Md (Drs Hoar, Blair, Hoover, and Fraumeni); the Cancer Data Service, University of Kansas Medical Center, Kansas City (Dr Holmes and Ms Boysen); and the Division of Biology, Kansas State University, Manhattan (Dr Robel).

From the Epidemiology and Biostatistics Program, National Cancer Institute, Bethesda, Md (Drs Hoar, Blair, Hoover, and Fraumeni); the Cancer Data Service, University of Kansas Medical Center, Kansas City (Dr Holmes and Ms Boysen); and the Division of Biology, Kansas State University, Manhattan (Dr Robel).

JAMA. 1986;256(9):1141-1147. doi:10.1001/jama.1986.03380090081023
Abstract

A population-based case-control study of soft-tissue sarcoma (STS), Hodgkin's disease (HD), and non-Hodgkin's lymphoma (NHL) in Kansas found farm herbicide use to be associated with NHL (odds ratio [OR], 1.6; 95% confidence interval [CI], 0.9, 2.6). Relative risk of NHL increased significantly with number of days of herbicide exposure per year and latency. Men exposed to herbicides more than 20 days per year had a sixfold increased risk of NHL (OR, 6.0; 95% CI, 1.9, 19.5) relative to nonfarmers. Frequent users who mixed or applied the herbicides themselves had an OR of 8.0 (95% CI, 2.3, 27.9) for NHL. Excesses were associated with use of phenoxyacetic acid herbicides, specifically 2,4-dichlorophenoxyacetic acid. Neither STS nor HD was associated with pesticide exposure. This study confirms the reports from Sweden and several US states that NHL is associated with farm herbicide use, especially phenoxyacetic acids. It does not confirm the case-control studies or the cohort studies of pesticide manufacturers and Vietnam veterans linking herbicides to STS or HD.

(JAMA 1986;256:1141-1147)

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