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  • Title: Digital rectal examination is barrier to population-based prostate cancer screening.
    Author: Nagler HM, Gerber EW, Homel P, Wagner JR, Norton J, Lebovitch S, Phillips JL.
    Journal: Urology; 2005 Jun; 65(6):1137-40. PubMed ID: 15922431.
    Abstract:
    OBJECTIVES: To determine whether use of the digital rectal examination (DRE) results in decreased participation in prostate cancer (PCa) screening, which, in turn, would result in lower detection. Population-based PCa screening includes prostate-specific antigen (PSA) measurement with or without a DRE. PSA and DRE screening provide greater sensitivity than PSA alone; however, the increased participation rate resulting from PSA-alone screening may result in a greater detection rate. METHODS: We performed a survey of 13,580 healthy men undergoing PSA-only population-based screening. In addition to the basic demographic information, the survey asked whether the participant would still be willing to participate in the screening if it included a DRE. We modeled the willingness to participate to assess the effect of PSA screening versus PSA and DRE screening on the basis of previously published data and our results. RESULTS: The results of our study indicated that only 78% of men would participate in screening that included both DRE and PSA. Thus, 7800 men of a theoretical population of 10,000 would participate in a screening that included both DRE and PSA. The positive screen rate (PSA > or = 4.0 ng/mL and/or abnormal DRE) would then have been 2013, with 472 PCa cases and 1540 negative biopsies. In the PSA-alone arm, all 10,000 men would have agreed to participate, and the positive screen rate (PSA > or = 4.0 ng/mL) would have been 1480, with 499 PCa cases and 980 negative biopsies. The PSA-alone arm would thus have detected 27 more cancers and performed 560 fewer negative biopsies. CONCLUSIONS: The results of our study have demonstrated that DRE is a significant barrier to participation in PCa screening. PSA plus DRE-based programs result in fewer cases of PCa detected, with a significant increase in negative biopsies. We, therefore, suggest that future mass screening efforts include only PSA determination and omit the DRE.
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