OBJECTIVE: The aim of this article was to evaluate the prevalence of Helicobacter pylori infection in patients diagnosed with advanced colorectal neoplasia undergoing a colonoscopy compared to patients without neoplasia. MATERIAL AND METHODS: This cross-sectional study investigated the association of neoplastic lesions diagnosed on colonoscopy with H. pylori infection in a consecutive series of subjects who had undergone a pancolonoscopy in a single academic medical center. All patients were tested by ELISA and the immunoblot technique for serum anti-H. pylori and CagA protein IgG antibodies. Multivariate analyses were adjusted for potential-relevant confounders, including age, sex, smoking, childhood socioeconomic status, and family history of colorectal cancer. RESULTS: Two hundred and seventy-three patients were included in the study: 75% (84/112), diagnosed with neoplastic colorectal lesions and 48% (77/161) without neoplastic lesions, were found to be seropositive for H. pylori infection (p < 0.001). H. pylori infection was found in 66/77 (86 %) patients with advanced neoplasia, 18/35 (51%) patients with nonadvanced neoplasia, and 48% (77/161) patients without neoplasia (p < 0.001). In the adjusted analysis, H. pylori infection was found to be associated with advanced colorectal neoplasia (odds ratio, OR 9.57; 95% CI 4.31-21.2; p < 0.001) and CRC (OR 7.98;95% CI 3.16-20.16; p < 0.001). There was no association in patients who were CagA positive. CONCLUSION: H. pylori infection is associated with the development of advanced colorectal neoplasia. More studies are needed to confirm our findings.
OBJECTIVE: The aim of this article was to evaluate the prevalence of Helicobacter pyloriinfection in patients diagnosed with advanced colorectal neoplasia undergoing a colonoscopy compared to patients without neoplasia. MATERIAL AND METHODS: This cross-sectional study investigated the association of neoplastic lesions diagnosed on colonoscopy with H. pylori infection in a consecutive series of subjects who had undergone a pancolonoscopy in a single academic medical center. All patients were tested by ELISA and the immunoblot technique for serum anti-H. pylori and CagA protein IgG antibodies. Multivariate analyses were adjusted for potential-relevant confounders, including age, sex, smoking, childhood socioeconomic status, and family history of colorectal cancer. RESULTS: Two hundred and seventy-three patients were included in the study: 75% (84/112), diagnosed with neoplastic colorectal lesions and 48% (77/161) without neoplastic lesions, were found to be seropositive for H. pylori infection (p < 0.001). H. pylori infection was found in 66/77 (86 %) patients with advanced neoplasia, 18/35 (51%) patients with nonadvanced neoplasia, and 48% (77/161) patients without neoplasia (p < 0.001). In the adjusted analysis, H. pylori infection was found to be associated with advanced colorectal neoplasia (odds ratio, OR 9.57; 95% CI 4.31-21.2; p < 0.001) and CRC (OR 7.98;95% CI 3.16-20.16; p < 0.001). There was no association in patients who were CagA positive. CONCLUSION: H. pylori infection is associated with the development of advanced colorectal neoplasia. More studies are needed to confirm our findings.