prostate cancer (PROS-tayt KAN-ser)

Cancer that forms in tissues of the prostate (a gland in the male reproductive system found below the bladder and in front of the rectum). Prostate cancer usually occurs in older men.

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Anatomy of the  male reproductive and urinary systems; drawing shows front and side views of ureters, lymph nodes, rectum, bladder, prostate gland, vas deferens,  penis, testicles, urethra, seminal vesicle, and ejaculatory duct.