My husband has just been treated for a common bile duct cyst, and is now in good health. During the treatment at the provincial hospital, the doctor operated on her husband only to remove the gallbladder and perform a cholecystectomy, not the cyst in the bile duct. Her family had to transfer her husband to another hospital for re-operation and removal of the common bile duct cyst. So let me ask why the common bile duct cyst should be removed?