Aliment Pharmacol Ther 30, 791–815 Summary Background Helicobacter pylori infection
rates in duodenal ulcer (DU) patients may be lower than previously estimated. Aim To …

Background Chromoendoscopy, or chromoscopy, refers to the topical application of stains or
dyes at the time of endoscopy in an effort to enhance tissue characterization, differentiation …

Helicobacter pylori (H. pylori) infection is widely accepted as the most important factor in the
pathogenesis of duodenal ulcer. However, in parallel with more effective eradication of H …

OBJECTIVE: The proportion of Helicobacter pylori–negative duodenal ulcer disease
appears to be increasing. Data on clinical outcome and prognosis in this subgroup are …

An idiopathic peptic ulcer is defined as an ulcer with unknown cause or an ulcer that
appears to arise spontaneously. The first step in treatment is to exclude common possible …

Since the discovery of Helicobacter pylori (H. pylori) infection in the stomach, the bacteria
infection and non-steroidal anti-inflammatory drugs (NSAIDs) use had been considered to …

Background The incidence of H. pylori-negative, idiopathic peptic ulcer disease (IPUD)
seems to be increasing with the changing trends of PUD and H. pylori infection in some …

Abstract Background and Aim The prevalence of H elicobacter pylori‐negative and
nonsteroidal anti‐inflammatory drug‐negative peptic ulcers, commonly known as idiopathic …

Background There are controversies on the causal role of H. pylori in duodenal ulceration.
Helicobacter pylori are curved gram-negative microaerophilic bacteria found at the layer of …

Methods From 2003 to 2008, upper gastrointestinal endoscopy and detailed personal
questionnaires were performed for patients who visited Department of Gastroenterology at …