Gupta, RajeshLakhtakia, SandeepSantosh, DAnuradha, STandan, ManuRamchandani, MohanRao, G VReddy, D Nageshwar2012-09-132012-09-132010-03Gupta Rajesh, Lakhtakia Sandeep, Santosh D, Anuradha S, Tandan Manu, Ramchandani Mohan, Rao G V, Reddy D Nageshwar. Narrow band imaging cholangioscopy in hilar cholangiocarcinoma. Indian Journal of Gastroenterology. 2010 Mar-Apr; 29(2): 78-80.http://imsear.searo.who.int/handle/123456789/141341Per oral cholangioscopy has been developed as a diagnostic modality for evaluation of bile duct lesions. Per oral cholangioscope with narrow band imaging (NBI) system can provide good quality images of bile duct lesions. There is limited data on per oral cholangioscopy using NBI in biliary tract diseases. We report our experience of NBI cholangioscopy in hilar strictures.enBile duct strictureportocaval lymphadenopathyself-expanding metallic biliary stentArticle