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.
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Dr. Mark C. Liszewski is an unpaid member of the Carestream Health Medical Advisory Board and receives grant support from Carestream Health for an unrelated study. Dr. Liszewski has received travel and meal support from Carestream Health.
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Hodes, A.D., Weinberg, G., Borenstein, S.H. et al. 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. Pediatr Radiol 51, 1929–1933 (2021). https://doi.org/10.1007/s00247-021-05106-8
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DOI: https://doi.org/10.1007/s00247-021-05106-8