[Heterotopy of the mucous membrane in the fundic part of stomach into an adenomatous polyp of the common bile duct with an ulcerous affection formed in it].

The surgical material of 1,340 cholecystectomies as a result of cholelithiasis was analyzed. Heterotopy of the stomach mucous membrane into gallbladder was discovered in two cases; its heterotopy into the common bile duct with an ulcer formed in the heterotopic section of the mucous membrane in the fundic part of stomach was discovered in one case.