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NCI Dictionary of Cancer Terms


Zollinger-Ellison syndrome  listen  (ZOLE-lin-jer-EH-lih-sun SIN-drome)

  A disorder in which tumors of the pancreatic islet cells produce large amounts of gastrin (a hormone), leading to excess acid in the stomach and, possibly, a peptic ulcer (ulcer of the stomach or the upper part of the small intestine).