[Evaluation of invasive tests in diagnosis of Helicobacter pylori infection and their correlation with endoscopic features in children with chronic gastritis].

Fifty children aged 8-17 years with histologically confirmed chronic gastritis were investigated for Helicobacter pylori (H. pylori) presence in gastric mucosa bioptates taken during endoscopy. Three invasive tests (histology, rapid urease test and culture) were done.