A 58-year-old man presented with a one-month history of upper abdominal pain and anorexia. There was no history of dysphagia, vomiting, hematemesis, melena, tiredness or jaundice. His complete blood count, renal function and liver enzyme levels were normal, as were the results of ultrasonography of the abdomen. An upper gastrointestinal endoscopic scan showed a diverticulum in the fundus of the stomach (Figure 1). The pain was reproduced by probing the diverticulum with biopsy forceps as well as by insufflating it with air. The patient's symptoms improved after four weeks' therapy with proton pump inhib itors.
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