Regression of duodenal gastric metaplasia in Helicobacter pylori positive patients with duodenal ulcer disease.

Background: It is unclear whether the extent of duodenal gastric metaplasia is due to Helicobacter pylori and/or acid.

Aims: To investigate the role of Helicobacter pylori eradication in the regression of duodenal gastric metaplasia in patients with duodenal ulcer maintained in acid suppression conditions.

Methods: .