cqvip:Objective:To explore the value of Helicobacter pylori antibody (Hp-IgG) and serum pepsinogen (PG) combined with gastroscopy for screening early gastric cancer and precancerous lesions in high-risk groups, so as to provide references for early clinical prevention and diagnosis.Methods: A retrospective analysis of our hospital from December 2014 to December 2017 were elderly patients with gastric cancer 304 cases, selected admitted 122 cases of elderly patients with gastric precancerous lesion (divided into superficial gastritis group, 70 cases of chronic atrophic gastritis group 52 cases) and 156 cases to the hospital in healthy volunteers as the control group. The status and the positive rate of Helicobacter pylori 13C urea breath test and compared two groups of patients with infection;using enzyme-linked immunosorbent assay of serum pepsinogen I (PG I), II (PG II) and pepsin Hp-IgG quantitative and qualitative diagnosis of individual and combined diagnostic efficiency and the comparison of three kinds of index.Results: The four groups were compared, the serum PG level of I from high to low were superficial gastritis group, normal control group, atrophic gastritis group and gastric cancer group, the differences were statistically significant;serum PG II levels from high to low in gastric cancer group and superficial gastritis group. Atrophic gastritis group, normal control group, the differences were statistically significant. Compared with the three groups, the positive rate of Hp-IgG was 90.7% in the gastric cancer group, 45.6% in the superficial gastritis group, 52.5% in the atrophic gastritis group, and the gastric cancer group was higher than that in the precancerous lesion group, but there was no difference between the precancerous lesions group. In terms of diagnostic efficacy, the specificity and sensitivity of Helicobacter pylori combined with pepsinogen were higher than those of the single diagnosis. Conclusion: Hp-IgG and PG combined with gastroscopy in screening high-risk gastric cancer and its precancerous lesions are of high specificity, high sensitivity and can be popularized in clinic.
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