Zollinger-Ellison syndrome (gastrinoma)

DDx

  • Peptic ulcer disease due to other causes, eg, NSAIDs, H. pylori
  • Gastroesophageal reflux disease , esophagitis, gastritis, pancreatitis, or cholecystitis
  • Diarrhea due to other causes
  • Other gut neuroendocrine tumor: carcinoid, insulinoma, VIPoma, glucagonoma, somatostatinoma
  • Hypergastrinemia due to other causes: atrophic gastritis, gastric outlet obstruction, pernicious anemia, chronic renal failure

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