The prostate which forms part of the male reproductive system, is a walnut sized gland located in front of the rectum and just below the bladder. it wraps around the urethra, the tube carrying urine from the bladder through the penis. The prostate requires mainly testosterone the male hormone to function properly. one of its functions is to produce fluid for semen to transport sperm during ejaculation. When prostate cells grow abnormally, the organ enlarges and pushes against the urethra and bladder, blocking the normal flow of urine. Cancer that begins in the prostate may remain in the prostate or spread to nearby lymph nodes. in some cases, it can even spread to the bones, bladder, rectum and other organs. Screening for prostate cancer is important,since the disease rarely shows any definitive signs in the early stages, as the disease progresses, however, prostate cancer patients may find themselves having to urinate more frequently and urgently, but with less urine or even blood in the urine.
A prostate enlarged by a tumour- the red area - can block the flow of urine......
