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Byline: Robyn Shelton
ORLANDO, Fla. _ Older men who are told they are free of prostate cancer after a commonly used blood test actually may have the disease, according to a new study.
The findings are bound to add more controversy to the debate over the prostate specific antigen, or PSA, test. In the research, tumors still were discovered in some men with the best scores possible.
"What this study tells us is there is no PSA value at which you can be assured you're risk-free," said Dr. Howard L. Parnes, chief of prostate and urologic cancer research at the National Cancer Institute, which funded the study.
Overall, doctors found cancer in…
Source: HighBeam Research, Study: PSA tests fail to detect cancer in many cases.