<unk>  is a rise in the blood level of prostate-specific antigen (PSA) in prostate cancer patients after treatment with surgery or radiation.<unk>  may occur in patients who do not have symptoms. It may mean that the cancer has come back. Also called PSA failure and<unk>  relapse. It is used to detect metastatic progression of the prostate cancer.
Biochemical recurrence
Antiestrogen withdrawal response
Hormone-sensitive cancer
Rapid hormone cycling
Resistant cancer
Hormonal therapy 
Poor ovarian reserve
Biphasic disease