After cholecystectomy operation, there is choledochal dilatation.

Common bile duct dilatation after cholecystectomy may be a normal physiological phenomenon, but also related to common bile duct stones, common bile duct cancer and other reasons.

1, physiological phenomenon

gallbladder has the function of concentrating and storing bile, after cholecystectomy, bile loss buffer directly into the common bile duct, may make the common bile duct pressure increased, causing common bile duct dilatation.

2, common bile duct stones

If there is stone formation in the common bile duct, it may block the lower end of the common bile duct, affecting the excretion of bile, so that the pressure in the common bile duct increases, causing abnormal expansion of the common bile duct.

3, common bile duct cancer

If the patient has common bile duct cancer after cholecystectomy, tumor tissue may block the lumen, causing common bile duct dilatation.