“…MD results from an incomplete obliteration of the omphalomesenteric duct (vitelline duct) (1-6, 8, 10, 11). It is normally obliterated between the 5 th and the 7 th week of gestation (2,5,6,10). The omphallomesenteric duct makes a communication between the yolk sac and the intestine (1,2,3,12,13).…”