Prevalence and Gastric Location of Helicobacter pylori in Patients with Intestinal Atrophy and Metaplasia in a Tertiary Care Institution in Colombia
DOI:
https://doi.org/10.22516/25007440.858Keywords:
Helicobacter pylori, Gastric atrophy, Intestinal metaplasia, Gastric cancer, Operative Link on Gastritis Assessment (OLGA)Abstract
Introduction: Helicobacter pylori infection plays a critical role in the carcinogenesis cascade of intestinal gastric cancer. However, its prevalence in preneoplastic conditions generating changes in the gastric mucosa is unclear. Currently, endoscopic surveillance using the Sydney protocol is suggested every 2 to 3 years, but the presence of H. pylori infection in the subcardial region and gastric fundus is ill-defined.
Objective: to determine the prevalence and gastric location of H. pylori infection in patients with preneoplastic conditions.
Materials and methods: a cross-sectional study in adults with a previous diagnosis of atrophy or intestinal metaplasia who entered control endoscopy and were antrum, body, incisura angularis, subcardial region, and gastric fundus biopsied. A descriptive analysis of the results by gastric regions was performed.
Results: data from 160 patients with a prevalence of H. pylori of 37.5% were collected. It increased from proximal to distal, starting with a 12.5% prevalence in the subcardial region to a 30.6% prevalence in the antrum. In addition, there was a similar pattern in the prevalence of preneoplastic lesions. Furthermore, advanced lesions (dysplasia, carcinoma) were observed in the incisura.
Conclusions: the prevalence of H. pylori in precancerous conditions showed a high presence in the distal regions compared to the proximal ones, and it is more frequent in the antrum and lower in the subcardial region. As for the gastric distribution of atrophy and metaplasia, more involvement was found in the antrum and angular notch and lower in the subcardial region and fundus.
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