J Cancer 2019; 10(19):4623-4632. doi:10.7150/jca.32857 This issue

Research Paper

Patients with Gastric Polyps need Colonoscopy Screening at Younger Age: A Large Prospective Cross-Sectional Study in China

Shenghong Zhang1✉#, Danping Zheng1#, Zhiwei Yang2, Liru Hong3, Siew Chien Ng4, Minrui Li1, Shanshan Huang1, Shengbing Wang2, Li Li1, Manying Li1, Hongshi Zhang3, Jinghua Lin1, Bihui Zhong1, Yi Cui1✉, Minhu Chen1✉

1. Division of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, P.R. China
2. Division of Gastroenterology, Meizhou People's Hospital, Meizhou, P.R. China
3. Division of Gastroenterology, Shantou Central Hospital, Shantou, P.R. China
4. Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Institute of Digestive Disease, Li Ka Shing Institute of Health Science, Hong Kong, P.R. China
# These authors contributed equally to the work

This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/). See http://ivyspring.com/terms for full terms and conditions.
Zhang S, Zheng D, Yang Z, Hong L, Ng SC, Li M, Huang S, Wang S, Li L, Li M, Zhang H, Lin J, Zhong B, Cui Y, Chen M. Patients with Gastric Polyps need Colonoscopy Screening at Younger Age: A Large Prospective Cross-Sectional Study in China. J Cancer 2019; 10(19):4623-4632. doi:10.7150/jca.32857. Available from https://www.jcancer.org/v10p4623.htm

File import instruction


Background To date, it is not clarified whether patients with gastric polyps without any alarming symptoms for colorectal neoplasia need colonoscopy screening. The objective of this study is to prospectively determine the association between gastric polyps and colorectal neoplasia.

Methods A multicenter prospective cross-sectional study was performed from July 2012 to December 2014. We compared patients with and without gastric polyps for prevalence of colorectal adenomas. The odds ratios (OR) were computed by logistic regression analysis after multivariable adjustments.

Results Totally 1546 patients were included, with 770 patients in the gastric polyp group and 776 in the age- and sex- matched control group. Patients with gastric polyps had greater odds of having any colorectal adenoma (adjusted OR=2.34, 95% confidence interval [CI]: 1.79 to 3.06, p<0.001) and advanced colorectal adenomas (adjusted OR=2.71, 95% CI: 1.74 to 4.23, p<0.001) than those without. The positive association between gastric polyps and colorectal adenomas remained significant in both women (OR=2.34, 95% CI: 1.66 to 3.29, p<0.001) and men (OR=1.87, 95% CI: 1.31 to 2.66, p=0.001). Patients over the age of 40 with gastric polyps had a higher prevalence of colorectal adenomas than those without (40-49yr: OR=1.81, 95% CI=1.02-3.21, p=0.04; 50-59yr: OR=1.88, 95% CI=1.26-2.81, p<0.001; 60-74yr: OR=2.62, 95% CI=1.73-3.98, p<0.001).

Conclusions The presence of gastric polyps is significantly associated with a higher prevalence of colorectal adenomas, especially advanced colorectal adenomas. Colonoscopy might be considered in patients with gastric polyps, of any gender, and over the age of 40.

Keywords: gastric polyp, colonoscopy, colorectal adenoma, colorectal cancer