Pathophysiology and risk factors for cholelithiasis in patients with Crohn's disease.

Cholelithiasis is more common in patients with Crohn's disease (CD) than in the healthy population. The aim here was to examine risk factors for cholelithiasis in a cohort of CD patients and to compare the prevalence of cholelithiasis in a cohort of CD patients with that in a control group. This was a single-center retrospective case-control study. The cohort comprised all consecutive CD patients who underwent abdominal ultrasound from January 2007 to January 2018. The control group comprised age- and gender-matched non-CD patients referred for upper gastrointestinal tract dyspepsia. The study included 238 CD patients and 238 controls. The prevalence of cholelithiasis in the CD and control groups was 12.6 % and 9.2 %, respectively (risk ratio (RR), 1.36; p=0.24). Univariate analysis revealed that cholelithiasis was associated with multiple risk factors. Multivariate analysis identified age (OR, 1.077; 95 % CI, 1.043-1.112; p<0.001) and receipt of parenteral nutrition (OR, 1.812; 95 % CI, 1.131-2.903; p=0.013) as independent risk factors for cholelithiasis in CD patients. The prevalence of cholelithiasis in CD patients was higher than that in the control group; however, the difference was not statistically significant. Age and receipt of parenteral nutrition were independent risk factors for cholelithiasis in CD patients.