Dictionary of Cancer Terms
View in Spanish: Cáncer de próstata en estadio I
Stage I prostate cancer (PROS-tayt KAN-ser)
Cancer that began in the prostate and is found in the prostate only. It cannot be felt during a digital rectal exam and is not visible by imaging. It is usually found during surgery for other reasons, such as benign prostatic hyperplasia (a condition in which an overgrowth of prostate tissue occurs). The Gleason score (a number that describes how abnormal the cells look under a microscope) is low.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.