Consensus as a method for evaluating the reproducibility of gastric intraepithelial neoplasia/dysplasia: possibility of using in the process of continuing professional education of pathologists

The reproducibility of the Modified Vienna classification of gastrointestinal neoplasia on the gastric mucosal biopsies was evaluated by using the kappa statistic. The work of a group of pathologists-experts was organized in the remote access mode with a demonstration of 26 cases (98 microphotographs) and an evaluation of the diagnostic category of gastric intraepithelial neoplasia/dysplasia. Different levels of agreement between the opinions of the participating experts have been established in depending on the diagnostic difficulty level. The kappa level ranged from 0.2 (poor agreement) to 0.66 (good agreement) and was depending from the chosen method of correction of the result. , This circumstance contributed to the formation of opinion that the diagnoses indefinite neoplasia/dysplasia-low and high grade neoplasia/dysplasia were the most difficult decisions. Possible reasons which reduce the level of consistency of pathologists are discussed.

интраэпителиальная неоплазия/дисплазия слизистой оболочки желудка, экспертная оценка, каппа-статистика, непрерывное профессиональное образование, gastric intraepithelial neoplasia/dysplasia, expert assessment, kappa statistic, continuing professional education

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