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A peptic ulcer of the stomach is called a gastric ulcer, an ulcer of the duodenum is a duodenal ulcer, and a peptic ulcer of the esophagus is an esophageal ulcer. A peptic ulcer occurs when the lining of these organs is corroded by the acidic digestive juices which are secreted by the stomach cells.
A peptic ulcer is a lesion in the tissue of the upper part of the gastrointestinal tract ( esophagus, stomach, duodenum). If it is located in the stomach, it’s called a gastric ulcer. A lesion in the esophagus is an esophageal ulcer.