Inflammation of the biliary ducts is called cholangitis. Inflammatory process usually begins extrahepatically and easily spreads intrahepatically, causing bacteriemia. Cholangitis was first defined by Charcot in 1877. Obstruction of the biliary ducts and presence of a superposing bacterial infection are common features in cholangitis. The mildest clinical form is ascending cholangitis, and the most severe form is acute fulminant cholangitis. Not every biliary obstruction is associated with cholangitis but there is surely a biliary obstruction in every cholangitis case