Introduction: In the last fifty years the incidence of gastric cancer in developed countries is a constant trend, but mortality in all countries remains at the same level and ranks second behind lung cancer. In the case of gastric cancer has a far more important the role the early diagnosis compared to prevention. Material and methods: The sample included 200 subjects aged 7-18 years treated at the Pediatric Clinic, University Clinic Tuzla and Pediatric Clinic and the Clinic for Child Surgery of Clinical Center of Sarajevo University who had endoscopic and histologically verified gastritis. The method of processing the tissue preparations of histologic sections of paraffin-fixed and paraffin tissue by hematoxylin-eosin method and Helicobacter pylori, using Giemsa. Results and discussion: Pathological analysis of the sample of patients with gastritis found that in 91% of patients had chronic superficial gastritis, while in 9% of patients were found atrophic changes, with or without intestinal metaplasia. Atrophic changes with or without intestinal metaplasia was found in 10.2% of H. pylori-positive patients with gastritis. The same analysis in a significant percentage of 5.7% of H. pylori-negative patients was atrophic changes, with or without intestinal metaplasia. Analysis of activity of the inflammatory process, we have found that the symptoms matched a statistically significant percentage (86.5%) with the active phase of the disease, which speaks against thinking that H. pylori infection is asymptomatic condition, which is often cited in the literature. Conclusion: Gastric mucosal lesion caused H. pylori infection is a reversible process and the eradication of this infection not only stops the activity of the inflammatory process, but also restores the mucous membranes. Eradication leads to a significant drop in the incidence of recurrence of gastritis and peptic ulcer disease, and can lead to prevention of malignant disease in 70-80% of cases, even, and perhaps more.
Key words: childhood, Coress model, carcinogenesis.
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