ObjectiveTo investigate the risk factors for recurrence of choledocholithiasis after stone removal by endoscopic retrograde cholangiopancreatography (ERCP). MethodsClinical data of 286 patients diagnosed as choledocholithiasis and receiving stone removal by ERCP were retrospectively analyzed, among which, 42 patients with recurrence of choledocholithiasis after stone removal were enrolled as observation group and 244 patients without recurrence as control group. Univariate and multivariate Logistic regression analysis were performed on the basic data of the patients in both groups to analyze the related risk factors for recurrence of choledocholithiasis. ResultsThe univariate analysis showed that there were significant differences in the age, incidence of juxtapapillary duodenal diverticulum, choledochal diameter, cholelithic diameter, cholecystectomy rate after endoscopic stone removal between the two groups (all P＜0.05). Logistic regression analysis showed that the choledochal diameter was the independent risk factor for recurrence of choledocholithiasis after stone removal by ERCP (OR=1.107, 95%CI: 1.037-1.182, P=0.002). ConclusionMultiple factors are related to the recurrence of choledocholithiasis after stone removal by ERCP, therefore the related risk factors should be assessed before operation to reduce the postoperative recurrence rate of choledocholithiasis.

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