Abstract
An unusual case of vitelline duct remnant(VDR) in a 16-month-old boy was reported. He was admitted because, of a cystic mass underneath a normal umbilicus. The mass was found at four months before his admission and gradually enlarged. The cyst originated within subcutaneous tissue between the diastatic rectus and extended beneath the left rectus muscle. Shape of the cyst was irregular with small out-pouchings. A small polypoid lesion was found on the posterior wall and removed with fibrous cyst wall. The cyst wall had neither mucosal lining nor structures attributable to VDR except at the polypoid lesion. Laparotomy failed to disclose any VDR in the peritoneal cavity. The polypoid lesion consisted of small bowel mucosa, smooth muscle layers and heterotopic pancreas(Heinlich 1 type) but no gastric mucosa. Removal of the polypoid lesion is curable in such a case.
