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[Evaluation of contamination of the gastric mucosa with Helicobacter pylori and activity of chronic gastritis].

An objective method of histological evaluation of stomach mucosa contamination with H. pylori proposed by the authors comprises contamination index, contamination density, adhesion density, adhesion index. The response to antibacterial therapy and other factors can also be determined. Chronic gastritis activity is characterized by the activity in surface area, in pits and in lamina propria. The method is simple, reproducible, time-effective, convenient both for diagnosis of chronic H. pylori gastritis and follow-up of the treatment results.