“Choledocholithiasis occurs in 3.4% of patients undergoing laparoscopic cholecystectomy but more than one third of these pass the calculi spontaneously within 6 weeks of operation and may be spared endoscopic retrograde cholangiopancreatography.” (Collins)

“The incidence of choledocholithiasis in patients undergoing laparoscopic cholecystectomy is approximately 3.5%. Up to one third of these patients do not require intervention because they clear their ducts of calculi spontaneously after surgery. It is reasonable to manage asymptomatic choledocholithiasis expectantly in the short term after laparoscopic cholecystectomy.” (Collins)

Collins C, et al A prospective study of common bile duct calculi in patients undergoing laparoscopic cholecystectomy: natural history of choledocholithiasis revisited. Ann Surg. 2004 Jan;239(1):28-33.