The mean observation period was longer for the LCJ group than for the OCJ group (31.6 vs. 25.3 months, p = 0.03). The incidence of postoperative cholangitis tended to be higher (16.9% vs. 8.2%, p = 0.061) and the incidence of intrahepatic stone was significantly higher in the LCJ group (8.4% vs. 1.9%, p = 0.035). The proportion of patients who required invasive intervention for anastomotic stenosis, such as endoscopic or percutaneous stenting or surgical reanastomosis, was significantly higher in the LCJ group (11.7% vs. 1.9%, p = 0.005). Conclusions: Although LCJ using continuous suture had been standardized within the study period, it is more likely to cause anastomotic stenosis than OCJ using interrupted suture.

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