also known as carcinoma of the prostate, is the development of cancer in the prostate, a gland in the male reproductive system.[1] Most prostate cancers are slow growing; however, some grow relatively quickly.[2][3] The cancer cells may spread from the prostate to other parts of the body, particularly the bones and lymph nodes.[4] It may initially cause no symptoms.[3] In later stages it can lead to difficulty urinating, blood in the urine, or pain in the pelvis, back or when urinating.[5] A disease known as benign prostatic hyperplasia may produce similar symptoms. Other late symptoms may include feeling tired due to low levels of red blood cells.[3]