Which of the following is the commonest cause for biliary stricture?
It is good to memorize the fact that procedures like ERCP can predispose to biliary strictures. Other causes include chronic inflammation secondary to gall stones, stenosis of sphincter of oddi or papillitis, cholangiohepatitis due to Opisthorchis sinesis or other parasites, cholangiocarcinoma, primary sclerosing cholangitis.
Trauma during surgery
Cholangio carcinoma
Clonorchis infection
Autoimmune hepatitis