Is a Neoplastic Process.
"Cancer that is only in the prostate gland, cannot be felt during a digital rectal examination, is not visible by imaging, and causes no symptoms. It is usually found accidentally or because a blood test showed an elevated prostate-specific antigen (PSA) level. Cancer cells may be found in only one area of the prostate, or they may be found in many areas of the prostate. Similar to stage A in the Whitmore-Jewett staging system."