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Study: Prostate Cancer May Be Overtreated

04:13
A PSA test can detect a prostate cancer like this one, but it can't tell which form it is. As a result, physicians order treatment that's unnecessary, but comes with considerable side effects. (Visuals Unlimited/Corbis)
A PSA test can detect a prostate cancer like this one, but it can't tell which form it is. As a result, physicians order treatment that's unnecessary, but comes with considerable side effects. (Visuals Unlimited/Corbis)

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