CLINICAL AND MORPHOLOGICAL FEATURES OF THE PATHOLOGY OF THE UPPER DIGESTIVE SYSTEM IN THE RESIDENTS PERMANENTLY RESIDING IN RADIOACTIVELY CONTAMINATED AREAS

The aim of the study was to study and evaluate the clinical and morphological characteristics of the pathology of the gastroduodenal zone of the digestive tract in the population of the radioactively contaminated areas in the immediate and remote observation periods after the Chernobyl accident. Methods: esophagogastroduodenoscopy, cytological examination of gastrobioptate, micronucleus test, dosimetric evaluation of gastrobioptates. To solve the problems of the interrelation of the accident factors at the Chernobyl and the state of the mucous membrane of the upper digestive tract, a medical statistical evaluation of the frequency dependence of the pathology of the upper gastrointestinal tract and environmental factors of the accident in the near and distant period was carried out. Results: it has been established that the main morphological types describing the state of the gastric and duodenal mucosa in the examinees are: erosive, edematic, fibrotic changes on the background of Hp infection, as well as the development of inflammatory cell infiltration. The frequency of occurrence of micronuclei in mucosal mucosa does not depend on the frequency of infection of Helicobacter pylori, as well as the total alpha and beta activity of biopsy specimens of the gastric mucosa, the density of contamination of the territory at ⁹⁰Sr and ¹³⁷Cs. The relationship between the frequency of gastroduodenal pathology and the levels of contamination of the territory of permanent residence by ⁹⁰Sr and ¹³⁷Cs, as well as statistical regularities of the evaluation of the total alpha and beta activity of gastrobioptates in residents of the radiation contaminated areas for a long period of observation are not statistically significant. Conclusions: the nature and clinical picture of the pathology of the upper digestive tract, the dynamics of the pathological process from inflammatory-dystrophic to atrophic changes in the gastric mucosa, the absence of a connection between this pathology and the indicators of ecological problems according to the isotope composition of the territories, I testify that the reason for the above-mentioned regularities may be the effect complex of factors of the Chernobyl accident.

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