The WHO classification of gastric epithelial neoplasms of 2019 is partially changed compared to the previous (2010) edition: new histological subtypes of dysplasia (serrated dysplasia, gastric pit/crypt dysplasia) have been introduced, the classification structure of benign neoplasms has changed (the term “adenomatous polyp” is reintroduced and represents a group of benign tumors, previously referred to as adenomas of gastric type), the section of malignant epithelial tumors expanded due to parietal cell carcinoma, micropapillary and mucoepidermoid carcinomas, Paneth cell carcinoma. Risk factors for gastric cancer are divided into two groups depending on the level of evidence of their involvement in carcinogenesis. The most significant risk factors are Helicobacter pylori infection, rubber manufacturing industry, tobacco smoking, X-ray and gamma radiation. The approaches to the grading of gastric carcinomas have been changed. Grading is preferably performed using a two-tiered system (low grade/high grade). Changes also affected the staging of gastric cancer. The section on neuroendocrine tumors has not undergone significant changes. In general, the new WHO classification contains more detailed data for each of the sections, however, it is not intuitive. The points in the classification table do not correspond to the names of sections in the text, which makes it difficult to understand the structure and search for the necessary section.