Medical Definition of Patent urachus

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Patent urachus: A surgery to repair a bladder defect. In an open (patent) urachus, there is an opening between the bladder and the umbilicus. The opening usually closes before birth. An open urachus typically occurs in infants.

Failure for the lumen of the urachus to be filled in leaves a patent (open) urachus. The telltale sign is leakage of urine through the umbilicus. A patent urachus needs to be surgically removed.

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Last Editorial Review: 1/24/2017

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