As the vitellointestinal
duct connects the developing midgut to the yolk sac in the embryo, incomplete resorption of the obliterated vitelline duct results in fibrous band connecting the distal ileum to the umbilicus.
This persistent part is normally present in early fetal life as the proximal part of the vitellointestinal
duct, which usually disappears later.
It is a true diverticulum found in the anti-mesenteric boarder comprising of all intestinal layers and is due to the persistence of the vitellointestinal
persistence of vitellointestinal
duct impart (Meckel's Diverticulum) or whole, aganglionosis of colon (Hirschsprung's disease), malrotation of gut etc.
Cutaneous remnants of the vitellointestinal
duct: a clinicopathological study of 19 cases.