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Study suggests another look at testosterone-prostate cancer link
Date:4/19/2011

BOSTON The long-standing prohibition against testosterone therapy in men with untreated or low-risk prostate cancer merits reevaluation, according to a new study published in The Journal of Urology.

"For many decades it had been believed that a history of prostate cancer, even if treated and cured, was an absolute contraindication to testosterone therapy, due to the belief that testosterone activated prostate cancer growth, and could potentially cause dormant cancer cells to grow rapidly," says Abraham Morgentaler, MD of Men's Health Boston. "Generations of medical students and residents were taught that providing testosterone to a man with prostate cancer was like pouring gasoline on a fire."

This study, involving 13 symptomatic testosterone deficient men who also had untreated prostate cancer, suggests this traditional view is incorrect, and that testosterone treatment in men does not cause rapid growth of prostate cancer. It is the first to directly and rigorously assess changes in the prostate among men with prostate cancer who received testosterone therapy.

The men received testosterone therapy while undergoing active surveillance for prostate cancer for a median of 2.5 years. Median age was 58.8 years. The initial biopsy Gleason score was 6/10 for 12 of the men, 7/10 for the other (Gleason score grades the aggressiveness of prostate cancer by its microscopic appearance on a scale of 2-10. Gleason 6 is generally considered low to moderately aggressive, and Gleason 7 moderately aggressive).

Mean testosterone concentration increased from 238 to 664 ng/dl with treatment, yet neither prostate specific antigen (PSA) concentrations nor prostate volume showed any change. Follow-up biopsies of the prostate were performed in all men at approximately yearly intervals, and none developed cancer progression. In fact, 54 percent of the follow-up biopsies revealed no cancer at all.

Although the number of men in the
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Contact: Jerry Berger
jberger@bidmc.harvard.edu
617-667-7308
Beth Israel Deaconess Medical Center
Source:Eurekalert

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