At the Riyadh Armed Forces Hospital (RAFH), 352 patients had gastrosco
py and from each, antral gastric biopsies were taken for identificatio
n of Helicobacter pylori, by urease test and histopathology. In 217 (6
1.64%) of these 352 patients, the histology specimens showed Helicobac
ter pylori in 73.68% of patients with duodenal ulcer, 70% of patients
with gastric ulcers and gastric erosions, 61% of patients with duodeni
tis and 52% of patients with gastritis. The urease test was positive a
t six hours in 164 (49.59%) of these 352 patients. The urease test was
positive in 60% of each group of patients with endoscopic findings of
gastric erosions, gastric ulcers and duodenal erosions.