PSA plays a variety of roles, the most familiar being screening to detect prostate cancer at an early stage. 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...

This article will discuss an alternative type of imaging, called color Doppler ultrasound (CDU). Unfortunately, CDU followed by targeted biopsy is available in only a few centers around the United States. Even so, this article will expound the many advantages of CDU for the diagnosis and staging of prostate cancer...