Zollinger-Ellison syndrome

Zollinger-Ellison syndrome (ZES) is characterized by severe peptic disease (ulcers/esophageal disease) caused by hypergastrinemia secondary to a gastrinoma resulting in increased gastric acid secretion.
A gastrinoma is a tumor in the pancreas or duodenum that secretes excess of gastrin leading to ulceration in the duodenum, stomach and the small intestine.
More about Zollinger-Ellison syndrome

Zollinger-Ellison syndrome

Zollinger-Ellison syndrome (ZES) is characterized by severe peptic disease (ulcers/esophageal disease) caused by hypergastrinemia secondary to a gastrinoma resulting in increased gastric acid secretion.
A gastrinoma is a tumor in the pancreas or duodenum that secretes excess of gastrin leading to ulceration in the duodenum, stomach and the small intestine.