Canine Zollinger-Ellison syndrome.

The unusual finding of peptic esophagitis and duodenal ulceration in a dog was associated with a malignant pancreatic islet cell tumor producing gastrin and ACTH. The finding of a gastrinoma in a non-human species introduces the potential for developing an animal model for the study of the protean genetic biochemical, physiologic and metabolic aspects of the Zollinger-Ellison syndrome.