Gastric heterotopia in the gallbladder.
D002648:Child; D002828:Choristoma / Q000473:pathology / Q000601:surgery*; D005706:Gallbladder Neoplasms / Q000473:pathology / Q000601:surgery*; D006801:Humans; D007813:Laparotomy; D008297:Male; D013270:Stomach