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Introduction to Gastritis and Peptic Ulcer Disease

By

Nimish Vakil

, MD, University of Wisconsin School of Medicine and Public Health

Last full review/revision Jun 2021| Content last modified Jun 2021
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Topic Resources

In Zollinger-Ellison syndrome Gastrinoma A gastrinoma is a tumor usually in the pancreas or duodenum (the first segment of the small intestine) that produces excessive levels of the hormone gastrin, which stimulates the stomach to... read more , a rare tumor that usually occurs in the duodenum, pancreas, or adjacent structures, produces a hormone called gastrin that causes the stomach to produce too much acid.

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Indigestion (Dyspepsia)
Indigestion (dyspepsia) is a feeling of pain or discomfort in the upper abdomen. Symptoms are usually vague and mild. Many people experience occasional dyspepsia that does not usually require medical attention. Sometimes, however, a single, sudden episode of dyspepsia may be a sign of a serious medical condition. Which of the following may cause symptoms of dyspepsia but is a true medical emergency?
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