Prolonged gastritis can lead to erosion of the stomach or duodenal lining. What is the resulting condition called?

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When the stomach lining is chronically inflamed, the protective mucosa can wear away and form an ulcer. An ulcer in this context is a break in the tissue that exposes deeper layers, created by ongoing acid and digestive enzymes. This situation is called a peptic ulcer, which can occur in the stomach (gastric ulcer) or in the duodenum (duodenal ulcer). The other terms refer to inflammation of different tissues (gastritis is the inflammation itself; esophagitis is the esophagus; duodenitis is the duodenum) and do not describe an ulcer.