Definition of Duodenal ulcer

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Duodenal ulcer: An ulcer (a hole in the lining) of the duodenum (the first portion of the small intestine). Ulcers can affect the stomach, duodenum, or esophagus. Their formation is related to H. pyloridus bacteria in the stomach, anti-inflammatory medications, and smoking cigarettes. Ulcer pain may not correlate with the presence or severity of ulceration. Diagnosis is made with barium x-ray or endoscopy. Complications of ulcers include bleeding, perforation, and blockage of the stomach (gastric obstruction). Treatment involves antibiotics to eradicate H. pyloridus, eliminating risk factors, and preventing complications.