Useful predictive factors of common bile duct stones prior to laparoscopic cholecystectomy for gallstones.

Background/aims: The aim of this study was to determine useful predictive factors of common bile duct stones (CBDs) as diagnosed by endoscopic retrograde cholangiopancreatography (ERCP) in patients who underwent laparoscopic cholecystectomy (LC) for gallstones.

Methodology: A total of 510 patients underwent ERCP prior to LC. Also reviewed in each were clinical data, laboratory data, and ultrasonographic findings.