Laparoscopic ultrasonography versus intra-operative cholangiogram for the detection of common bile duct stones during laparoscopic cholecystectomy: a meta-analysis of diagnostic accuracy.

•Laparoscopic ultrasound is a less invasive alternative to intra-operative cholangiography.•There remains a need assess the diagnostic accuracy of these two investigations in detecting common bile duct stones.•This study identifies laparoscopic ultrasound as an equivalentalternative to intraoperative cholangiography.