[A case of vitello intestinal cyst].

A case of vitello intestinal cyst was reported. A 16-month-old girl was referred to our clinic with a complaint of a cystic mass in the region of the navel. With a diagnosis of urachal cyst, resection of the cyst was performed. Histopathologically, the cyst wall consisted of fibrous and fat tissue, and a small polypoid tumor which was found on the inner surface of the cyst was covered by intestinal epithelia. Pancreatic and gastric mucosal elements were observed in the submucosal layer. The histopathological diagnosis was vitello intestinal cyst. Serum amylase level elevated preoperatively normalized after removal of the cyst. We collected 11 cases of vitello intestinal cyst reported in Japan including the present case. Ectopic pancreatic tissue is considered a characteristic of vitello intestinal cyst and that serum or fluid amylase level may be useful for differential diagnosis of the disease.