CC BY-NC-ND 4.0 · Ultrasound Int Open 2018; 04(03): E104-E105
DOI: 10.1055/a-0633-3879
Case Report
Eigentümer und Copyright ©Georg Thieme Verlag KG 2018

Prenatal Diagnosis and Clinical Course of a Patent Urachus Associated with an Allantoic Cord Cyst and a Giant Umbilical Cord

Ismail Tekesin
1   Prenatal Unit Stuttgart, Prenatal Unit Stuttgart, Stuttgart, Germany
Regina Küper-Steffen
2   Klinikum Stuttgart, Department of Pathology, Stuttgart, Germany
› Author Affiliations
Further Information

Publication History

received 22 November 2017
revised 13 April 2018

accepted 12 May 2018

Publication Date:
24 September 2018 (online)


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.