Journal
AMERICAN JOURNAL OF INDUSTRIAL MEDICINE
Volume 61, Issue 7, Pages 605-614Publisher
WILEY
DOI: 10.1002/ajim.22858
Keywords
absorbed organ doses; dose-response; gaseous diffusion; radiation; uranium enrichment
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Funding
- U.S. Department of Energy
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ObjectiveTo examine dose-response relationships between internal uranium exposures and select outcomes among a cohort of uranium enrichment workers. MethodsCox regression was conducted to examine associations between selected health outcomes and cumulative internal uranium with consideration for external ionizing radiation, work-related medical X-rays and contaminant radionuclides technetium (Tc-99) and plutonium (Pu-239) as potential confounders. ResultsElevated and monotonically increasing mortality risks were observed for kidney cancer, chronic renal diseases, and multiple myeloma, and the association with internal uranium absorbed organ dose was statistically significant for multiple myeloma. Adjustment for potential confounders had minimal impact on the risk estimates. ConclusionKidney cancer, chronic renal disease, and multiple myeloma mortality risks were elevated with increasing internal uranium absorbed organ dose. The findings add to evidence of an association between internal exposure to uranium and cancer. Future investigation includes a study of cancer incidence in this cohort.
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