[The Russian revision of chronic gastritis classification: reproducibility of the pathomorphologic picture].

The estimation of Russian revision reproducibility of the chronic gastritis OLGA system International classification has been spent. The analysis of Russian pathologists-experts work, considered in estimations of an expression level and prevalence of gastric mucosal atrophic changes, as a tumour predictor, for the identification of chronic gastritis stages (0-IV) has been carried out by kappa-statistics. The different levels of experts' consent according to consent criteria calculation have been estimated.