The prevalence of H. pylori infection has beenreported to be very high in duodenal ulcer
(DU) disease, but the precise frequency and causes of H. pylori-negative DU are not well …

METHODS: Patients with an endoscopic diagnosis of duodenal ulcer between 1996 and
2002 were included in the present study. Patients were considered to be negative for H …

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: Helicobacter pylori is thought to be a cause of duodenal ulceration, but there is
some evidence that it is found less often in early than in later disease. Aim: To assess the …

The facts that H pylori infection is commoner in duodenal ulcer (DU) patients than in the
normal population, and that eradication results in most cases being cured, have led to the …

Most patients with chronic duodenal ulcer (DU) craters have gastritis associated with
Helicobacter pylori (HP), now thought to be the major cause of DU. A smaller proportion of …

Background: The proportion of duodenal ulcers not associated with Helicobacter pylori
infection or the use of non‐steroidal anti‐inflammatory drugs (NSAIDs) is increasing. Aim: To …

Helicobacter pylori infection may not be the primary cause of duodenal ulceration in cases
not associated with non‐steroidal anti‐inflammatory drugs, but may be a secondary …

The proportion of ulcer patients without evidence of Helicobacter pylori infection varies
considerably in different parts of the world, which may be explained by the different …

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