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Abstract
Background: The prevalence of duodenal ulcer is high in patients with chronic pancreatitis. Patients with simple duodenal ulcer without chronic pancreatitis are mostly Helicobacter pylori-infected, and the prevalence of IgG seropositivity is >95%. The prevalence of H. pylori infection in patients with chronic pancreatitis is not known. Methods: IgG antibodies against H. pylori were measured in a cross-sectional survey of consecutive patients who had their exocrine pancreas function examined with a Lundh meal test in the period 1988–95 and in a control group of patients with simple duodenal ulcer. Results: Twenty-seven per cent of the patients with chronic pancreatitis had duodenal ulcer during the observation period. The prevalence of IgG antibodies against H. pylori was 22% in patients with chronic pancreatitis without duodenal ulcer as compared with 27% with non-organic abdominal pain. The prevalence of IgG antibodies against H. pylori was 60% in patients with chronic pancreatitis complicated by duodenal ulcer as compared with 86% in controls with simple duodenal ulcer. Conclusions: H. pylori infection contributes but may not be the only cause of duodenal ulcer in patients with chronic pancreatitis.