Association of Helicobacter pylori infection with colorectal polyps and malignancy in China

BACKGROUNDGastric Helicobacter pylori (H.pylori) infection is related to chronic gastritis, gastroduodenal ulcer, and gastric malignancies; whether this infection is related to colorectal polyps and colorectal cancer (CRC), remains debatable. AIMTo investigate the relationship between gastric H. pylori infection and the risk of colorectal polyps and CRC. METHODSWe retrospectively analyzed 3872 patients with colorectal polyps who underwent colonoscopy and pathological diagnosis.We also analyzed 304 patients with primary CRC.The characteristics of these patients were compared with those of the control group, which included 2362 patients with the normal intestinal mucosa.All subjects completed a 14 C-urea breath test, bidirectional gastrointestinal endoscopy, and a biopsy on the same day.Data on the number, size, location, and pathology of the polyps, the location, and pathology of the CRC, the detection of H. pylori, and the incidence of H. pylori-associated atrophic gastritis or intestinal metaplasia were obtained.A logistic regression model was used to analyze the relationship between gastric infection due to H. pylori, and the incidence of colorectal polyps and CRC. RESULTSThe prevalence of H. pylori infection was higher in the multiple polyps group than in the solitary polyp group and the control group [95% confidence interval WJGO https://www.wjgnet.com