Association of gallbladder diseases with risk of gastrointestinal polyps

Background It has not yet been determined whether gastroscopy and colonoscopy screening help patients with gallbladder diseases. We aim to retrospectively investigate the relationship between gallbladder diseases and gastrointestinal polyps in order to provide a theoretical basis for the early screening of gastrointestinal polyps in patients with gallbladder disease. Methods This is a retrospective cross-sectional study involving 1662 patients who underwent gastroscopy, colonoscopy, and abdominal ultrasound as part of their health check-up from January 2015 to July 2020. We also compared the patients with and without gallbladder diseases to determine the prevalence of gastrointestinal polyps. Results Patients with gallbladder polyps had greater odds of having colorectal polyps (adjusted odds ratio (OR)=1.77, 95% confidence interval [Cl]: 1.23 to 2.54, p= 0.002) and gastric plus colorectal polyps (adjusted OR=2.94, 95%Cl: 1.62 to 5.32, p< 0.001) than those without. Patients with multiple gallbladder polyps had greater odds of having colorectal polyps (adjusted OR=2.33, 95% CI: 1.33 to 4.07, p= 0.003) and gastric plus colorectal polyps (adjusted OR=3.95, 95% CI: 1.72 to 9.11, p= 0.001), and patients with gallbladder polyps had greater odds of having left-colon polyps (adjusted OR=1.90, 95% CI: 1.25 to 2.88, p= 0.003) and colorectal adenoma (adjusted OR=1.78, 95% CI: 1.19 to 2.66, p= 0.005). We also noted that women with gallbladder polyps had a higher prevalence of colorectal polyps (OR=2.13, 95% CI: 1.20 to 3.77, p= 0.010) and gastric plus colorectal polyps (OR=3.69, 95% CI: 1.58 to 8.62, p= 0.003). However, no positive correlation was observed between gallbladder stones and gastrointestinal polyps. Conclusions Gallbladder polyps are significant indicators of colorectal and gastric plus colorectal polyps. Hence, gastroscopy and colonoscopy screening should be performed for patients with gallbladder polyps, particularly female patients and those with multiple gallbladder polyps.