From the case:
Omphalomesenteric duct anomalies
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Omphalomesenteric (vitelline or vitellointestinal) duct anomalies.
Author: Emma Gevorgyan.
Case Discussion
The omphalomesenteric duct (also called the vitelline or vitellointestinal duct) is a communicating tract between the embryonic yolk sac and the primitive midgut. This duct is normally obliterated between the 5-8th weeks of gestation.