“…According to the literature data p53 expression increases in the sequence «adenoma-carcinoma» [7,6,13,14]. In this study it was revealed that p53 expression by CRA epitheliocytes is 16,5 times higher than that for adenomas [39,67 (15,69; 83,75) % vs. 2,39 (1,58; 8,26) %, p˂0,05] and also is 40 times higher than that for hyperplastic polyps [39,67 (15, our colleagues: p53 expression increases in the sequence «hyperplastic polypdysplastic polypnon-invasive adenocarcinomainvasive adenocarcinoma» of the stomach [18,19]. Thereby, the results are consistent with current literature and indicate that CRA epitheliocytes distinguish by the prominent tendency to p53 accumulation, whereas epitheliocytes of benign polyps characterize by the low level of p53 expression.…”