Cholecystectomy protects against extrahepatic bile duct cancer: Is this a result of the removal of gallstones?
David T. Walden, Roger D. Soloway, Roger S. Crowther – 1 June 1994 – The aetiology of cancer of the extrahepatic bile duct is unknown. Gallstones have been proposed to be a risk factor on the basis of ecological and epidemiological evidence. As gallstones are formed in the gallbladder, the occurrence of extrahepatic bileduct cancer in patients after cholecystectomy is of interest.