Fetal intra-abdominal umbilical vein aneurysm
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Routine fetal anatomic scan at 20 weeks.
Fusiform dilatation of a 14 mm long segment of intra-abdominal umbilical vein. Diameter is approximately 8 mm. It mimics an intra-abdominal cystic lesion but fills up with color on Doppler examination.
1 case question available
It is often associated with other congenital anomalies including cardiac anomalies and Down syndrome. Once this anomaly has been identified, a careful search for other fetal anomalies must be carried out. Amniocentesis could be offered to the patient.