[Congenital duodenal obstruction in combination with heterotopic gastric mucosa in the gallbladder. Case report and etiology].

A hitherto unique case of ectopic gastric mucosa of the gallbladder in combination with a congenital duodenal stenosis in an young male adult is presented and the etiology of both anomalies is elucidated. While the intestinal obstruction was confirmed prior to the operation, the diagnosis of the gastric heterotopia in the gallbladder has been established, as usually, first by histopathologic examination. Both anomalies required surgical treatment. The long-standing indistinct abdominal complaints of the patient vanished after cholecystectomy and duodenojejunostomy.