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Drop in Testosterone Tied to Prostate Cancer Recurrence, Fox Chase Cancer Center Study  
10/29/2012 7:30:45 AM

Men whose testosterone drops following radiation therapy for prostate cancer are more likely to experience a change in PSA levels that signals their cancer has returned, according to new research from Fox Chase Cancer Center. The findings will be presented on October 29 at the American Society for Radiation Oncology's 54th Annual Meeting. Specifically, men whose testosterone fell following various forms of radiation therapy were more likely to experience an increase in prostate-specific antigen (PSA)—often the first indication the cancer has recurred.