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Prostate cancer is now the most common type of cancer among American men. Over the past few years, new forms of technology such as prostate-specific-antigen (PSA) testing and transrectal ultrasonography have permitted the early detection of prostate cancer in asymptomatic men. The American Cancer Society recommends that men over 50 years of age have a yearly rectal examination and PSA measurement. Mass screening of this population has profoundly changed the incidence of diagnosed prostate cancer -- from 105,000 in 1990 to 165,000 in 1993. An estimated 200,000 cases of prostate cancer will be diagnosed in the year 2000.
These statistics
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