Felis ISSN 2398-2950

Persistent urachus

Synonym(s): Patent urachus

Contributor(s): Ed Hall, Melissa Wallace

Introduction

  • Rare.
  • Embryological anomaly - failure of urachal stenosis to close off bladder (from allantoic cavity) and form umbilical ligament of bladder.
  • Seen in neonate.
  • Signs: urine drains from umbilicus and bladder may not be completely emptied.
  • Urinary infection common Feline lower urinary tract disease (FLUTD).
  • Related conditions: bladder diverticula Bladder: diverticulum /urachal cysts.

Pathogenesis

Etiology

  • Embryological anomaly: failure of urachal stenosis to close off bladder (from allantoic cavity) and form ventral umbilical ligament of bladder.

Pathophysiology

  • Urine continues to dribble from umbilicus after birth.
  • Ascending infection and cystitis common.

Diagnosis

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Treatment

This article is available in full to registered subscribers

Sign up now to purchase a 30 day trial, or Login

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Laverty P H & Salisbury S K (2002) Surgical management of true patent urachus in a cat. J Small Anim Pract 43 (5), 227-229 PubMed.
  • Greene R W & Böhning RH Jr. (1971) Patent persistent urachus associated with urolithiasis in a cat. JAVMA 158 (4), 489-491 PubMed.
  • Scherzo C S (1967) Cystic liver and persistent urachus in a cat. JAVMA 151 (10), 1329-1330 PubMed.


ADDED