Agent orange as a risk factor for positive prostate biopsy.

TL;DRAbstract

178 Background: Agent Orange (AO), a defoliate contaminated with the known carcinogen dioxin, has become a prominent concern as veterans of the Vietnam War who were exposed to AO are now reaching the age at which prostate cancer is most prevalent. While sufficient evidence has linked AO exposure to many diseases, only limited but suggestive evidence exists to support a positive association between AO and prostate cancer. Despite mixed findings, recent studies have found that the risk of prostate cancer in those exposed to AO was as high as twice the risk in those not exposed. The goal of this study was to examine this association between AO exposure and prostate cancer in a cohort of men referred for a prostate biopsy. Methods: In this retrospective cohort-design, risk factors were identified using historical clinical data from a population of veterans referred to the Portland VA Hospital for a prostate biopsy between 1993 and 2010. In addition to AO exposure, covariates included prost

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