Gastric cancer is one of the leading causes of cancer morbidity and mortality worldwide. It is common practice to use two classification systems: the Lauren classification system and the WHO classification of tumors in the morphological study of gastric carcinomas. Since 2010, the WHO classifications have included the term “poorly cohesive carcinoma”, which refers to all diffuse forms of gastric cancer, including signet ring cell carcinoma and other subtypes. Despite this, the term has not been widely used in the world community, and it is almost not found in Russian literature. Only recently, after the publication of the 5th edition of the WHO classification (2019), there have been review articles where the term is used, but its name can be translated into Russian in different ways: poor-, weak -, low-adhesive, discogesive. The paper analyzes the Pubmed and Elibrary databases in order to find out the frequency of using various designations for diffuse gastric carcinoma, justifies the use of the term «poorly cohesive carcinoma», and proposes a variant of the term interpretation in Russian.

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