[Zollinger-Ellison syndrome with unusual symptomatology. Demonstration of the gastrinoma by endoscopic wirsungography].

A 58-year-old man developed diarrhoea and duodenal ulcer related to a malignant pancreatic gastrinoma. Initial evaluations of basal acid output and serum gastrin level were not significant. Two months later they were typical of Zollinger-Ellison syndrome. The tumor was detected by endoscopic retrograde pancreatography.