Fig. 2From: A nomogram to predict conversion of laparoscopic surgery to laparotomy for CholedocholithiasisNomogram for predicting the risk of conversion to open surgery in laparoscopic surgery for choledocholithiasis. PUAS, previous upper abdominal surgery; CBD, common bile duct; LH, laparoscopic hepatectomy; IHD, intrahepatic bile ductBack to article page