Approximately one third of men who undergo radical prostatectomy (RP) to treat clinically localized prostate cancer will develop a detectable PSA within 10 years.[1,2] Biochemical recurrence (BCR) of prostate cancer after RP is defined as a rising PSA in the absence of clinical or radiographic evidence of disease. To date, the only potentially curative treatment option for men who experience BCR after RP is salvage radiation therapy (SRT)... 
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