At times, a visible or palpable gallbladder, which may be somewhat tender, can be detected below the liver margin in patients with cystic or common bile duct obstruction.

Conclusions ERCP can clearly show out the conformation and variation of extrahepatic bile duct and cystic duct and it is of important value before gallbladder operation.

Conclusions the downright cholecystectomy but not cyst drainage is the principle of surgical management of cystic dilation of bile duct.