Peptic Ulcer Disease
Peptic ulcers are erosions in the lining of the esophagus, stomach, or duodenum. Ulcers in the stomach are called gastric ulcers, and duodenal ulcers if in the duodenum. The cause of peptic ulcer disease (PUD) is not fully known. It is clear that Helicobacter pylori (H. pylori) does play a role in PUD.
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