<prompt> MC site of cholangio CA:ntrahepaticDistal biliary tractHilumMultifocal  <response>: Hilum Risk factor for cholangio carcinoma Primary sclerosing cholangitis Choledochal cyst Ulcerative colitis Clonorchis sinensis injection Chronic typhoid carries 23 of cholangio carcinoma are located at hepatic duct bifurcation here they are called as KLATSKINs tumoursQ MC type is adeno carcinomaQ Painless jaundice is the most common presentation 