Bladder prolapse through a patent urachus presenting as an umbilical mass in the newborn: characteristic prenatal sonographic findings and the diagnostic benefit of postnatal cystography

Aaron D. Hodes, Gerard Weinberg, Steven H. Borenstein, Mark C. Liszewski, Terry L. Levin

Research output: Contribution to journalArticlepeer-review

Abstract

Bladder prolapse through a patent urachus is rare. We present a newborn with an unusual exophytic, erythematous umbilical mass. Voiding cystography readily demonstrated continuity of the bladder dome with the umbilical mass, confirming bladder prolapse through a patent urachus. The diagnosis of bladder prolapse was rapidly made in a second newborn with similar imaging and clinical findings and confirmed by cystography. We discuss the embryology of this condition including the association with a vesico-allantoic cyst in utero. Pre- and postnatal images are presented. The use of cystography in diagnosis is emphasized.

Original languageEnglish (US)
JournalPediatric radiology
DOIs
StateAccepted/In press - 2021

Keywords

  • Allantoic cyst
  • Bladder prolapse
  • Cystography
  • Neonate
  • Patent urachus
  • Vesico-allantoic cyst
  • Voiding cystourethrogram

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Radiology Nuclear Medicine and imaging

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