Duodenal ulcer:A crater (ulcer)inthe lining of the beginning of thesmall intestine(duodenum). Ulcer formation is caused byinfectionwithHelicobacter pylori. Other factors predisposing a person to ulcers includeanti-inflammatory medications andcigarette smoking. Ulcerpainmay not correlate with the presence or severity ofulceration.Diagnosis是用钡X-rayorendoscopy. Complications of ulcers include bleeding, perforation, and blockage. Treatment involves using antibiotics to eradicateH. pylori, eliminating risk factors, and preventing complications.
