During fetal development the urachus is a tube that connects the bladder to the umbilicus. After birth, the urachus normally closes and becomes a ligament. If the urachus remains open, surgery is recommended so that bacteria or infection cannot be introduced into the bladder.
Update Date 10/9/2012
Updated by: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. 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. Health Solutions, Ebix, Inc.