A literature review focused on the role of the polyphenols in the management and mechanism of action of Benign Prostatic Hyperplasia. It may also reduce discomfort due to an enlarged bladder. PLUS, the latest news on medical advances and breakthroughs from Harvard Medical School experts. The urethra, a tube that carries urine out of the bladder through the penis, is called the urethra. If your prostate grows too large, you can develop prostate cancer or benign prostatic hyperplasia. It improved from an average 56% to 93%. This zone surrounds ejaculatory and ducts.