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A prostate cancer screening can involve both a digital rectal exam (DRE) and a blood test for prostate specific antigen (PSA).
In a DRE, a doctor inserts a gloved finger into the rectum, feels the prostate through the rectal wall, and checks for firm or nodular areas.
With a PSA, a lab checks the levels of PSA in the blood. 75% of newly diagnosed prostate cancers are found because of PSA screening.
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