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Can Prostate Cancer Screening Improve Men's Lives?

PSA Test: Overall Gain in Quality-of-Life Years May Not Apply to Individual Men
WebMD Health News
Reviewed by Louise Chang, MD

Aug. 15, 2012 -- A European study suggests that men who undergo PSA prostate cancer screening will gain years of high-quality life.

But it's not quite that simple.

Those extra years of high-quality life showed up across big groups of screened men. Individual men may get different results -- especially if screening-associated risks such as impotence and incontinence bother them more than the possible benefit of a life free of prostate cancer.

Whether to get a PSA test is a tricky decision.

Urologists, who see men dying of late-stage prostate cancer, tend to favor PSA screening for all men as they reach middle age. They want to catch the cancers while they are still treatable.

Testing experts, including the U.S. Preventive Services Task Force, calculate that the real harms of prostate cancer over-diagnosis and over-treatment outweigh potential benefits. It's an ongoing debate.

The new study, published today in the New England Journal of Medicine, "moves the ball down the field quite a lot," according to medical decision-making expert Harold C. Sox, MD, professor of medicine at Dartmouth's Geisel School of Medicine.

Instead of trying to compare prostate cancer to treatment side effects, the new study looks at the quality of life in men who do and don't get PSA tests.

PSA Pluses and Minuses

Harry J. de Koning, MD, professor of public health and screening evaluation at the Netherlands' Erasmus Medical Center, led a team that analyzed data from a large European clinical trial of PSA screening. They translated all outcomes of regular PSA testing into quality life years gained or lost.

"I think prostate cancer screening has been shown to be effective, but there are a lot of negative side effects," de Koning tells WebMD. "What we now say is that a man age 55 to 69, if he is screened every four years, will gain something like 8.5 years of life. But we say you should diminish this by 20%, to about 6.7 years, because then you get healthy life years. It is a longer life, but a mix of good things and bad things."

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