Peptic ulcers: Half a million each year

"A peptic ulcer is a sore on the lining of the stomach or duodenum, the beginning of the small intestine. Less commonly, a peptic ulcer may develop just above the stomach in the esophagus, the tube that connects the mouth to the stomach. A peptic ulcer in the stomach is called a gastric ulcer. One that occurs in the duodenum is called a duodenal ulcer. ... Each year in the United States, about half a million people develop a peptic ulcer." -- National Digestive Diseases Information Clearinghouse

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