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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 HodesGerard WeinbergSteven H BorensteinMark C LiszewskiTerry L Levin
Published in: Pediatric radiology (2021)
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.
Keyphrases
  • spinal cord injury
  • urinary tract
  • preterm infants
  • urinary incontinence
  • high resolution
  • mass spectrometry
  • convolutional neural network