Complete evagination of a patent vitellointestinal duct and adjacent ileal limbs from an omphalocele sac: an extreme presentation.

Vitellointestinal duct (VID) anomalies have been described extensively in the literature. However, an everted VID with prolapse of ileum arising from an omphalocele is rare, and its appearance at birth can be alarming and can present a diagnostic challenge. We describe a baby born to a teenage diabetic mother who was noted to have a strange exophytic mass arising from the abdominal wall. Antenatal scans had revealed multiple other malformations but not an omphalocele. He was operated on early, and the diagnosis of a patent VID with prolapse of the ileum arising from an omphalocele was only confirmed intraoperatively. The duct was resected, the ileum closed primarily and primary closure of the abdominal wall was performed without tension. He recovered well postoperatively. A brief review of similar cases is included. © BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ.