An enlarged prostate gland compresses the urethra, causing problems with urination. Prostate enlargement is caused by prostate gland overgrowth (benign prostatic hypertrophy or hyperplasia) or in some cases, prostate cancer.
Update Date 9/19/2011
Updated by: Louis S. Liou, MD, PhD, Chief of Urology, Cambridge Health Alliance, Visiting Assistant Professor of Surgery, Harvard Medical School. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.