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DOI: 10.1055/a-0633-3879
Prenatal Diagnosis and Clinical Course of a Patent Urachus Associated with an Allantoic Cord Cyst and a Giant Umbilical Cord
Publication History
received 22 November 2017
revised 13 April 2018
accepted 12 May 2018
Publication Date:
24 September 2018 (online)
![](https://www.thieme-connect.de/media/10.1055-s-00028422/201803/lookinside/thumbnails/0146_10-1055-a-0633-3879-1.jpg)
Introduction
Umbilical cord cysts are rare and the various differential diagnoses influence both management of delivery and postnatal care. Differential diagnoses of umbilical cord cysts include pseudo-cysts, omphalocele, bladder exstrophy, omphalomesenteric duct cysts and other urachal anomalies. Communication between the cyst and the fetal bladder is a hallmark of patent ductus urachus, which has an estimated incidence of 1-2:100,000 and may be detected prenatally by high-resolution ultrasound (Persutte WH et al. J Ultrasound Med 1988; 7: 399-403; Wildhaber BE et al. Arch Dis Child Fetal Neonatal Ed 2005; 90: F535-536). We present a case of a patent ductus urachus initially presenting as an allantoic cord cyst followed by edematous swelling of the umbilical cord.