About Prostate Cancer
The prostate gland is about the size of a walnut and is located below the bladder and in front of the rectum. The tube that carries urine (the urethra) runs through the prostate. The prostate contains cells that make some of the seminal fluid, which protects and nourishes sperm.
Almost all prostate cancers are adenocarcinomas, meaning they develop from the prostate gland's cells. Once the cancer extends beyond the prostate, it may spread locally and affect tissues and organs near the prostate.
The cancer cells may also spread elsewhere in the body. If it spreads, prostate cancer tends to move to the lymph nodes in the pelvis, where it may continue to grow. If prostate cancer cells reach the pelvic lymph nodes, they are more likely to spread to other locations and organs of the body, particularly the bones, which can cause pain in the hips, spine, ribs, or other areas.