PSA plays a variety of roles, the most familiar being screening to detect prostate cancer. PSA also helps to define the Stages of Blue. Another role of PSA is to detect cancer relapse after surgery or radiation. Lastly, rises or declines in PSA after hormone therapy or chemotherapy help determine whether a treatment is working…

Radiation is a mainstay for salvage treatment after surgery and also one of the better salvage options for relapse after previous radiation. Radiation, when it is given preventatively, while the PSA is still undetectable, is called adjuvant therapy…