Presenting symptoms and signs in patients with Zollinger-Ellison syndrome

The presence or absence of clinical symptoms or signs at the initial assessment in 261 patients with Zollinger-Ellison syndrome (ZES). Prominent gastric body folds, esophageal stricture, and pyloric or duodenal scarring were determined by upper gastrointestinal endoscopy; a confirmed peptic ulcer was assessed by upper gastrointestinal endoscopy or radiographic studies.