… the GI tract, … system in patients with biliary-tract disease. In this preliminary study, we
investigated whether POCS by using the NBI system was feasible for the identification of biliary-tract …

… technology that provides enhanced endoscopic images of surface mucosal structures and
… of biliary tract diseases. However, the diagnostic value of advanced bile duct imaging with …

… utility of NBI for diagnosis of bile duct disease using peroral cholan gioscopy, but … bile duct
cancer de tected by direct peroral cholangioscopy with narrow-band imaging after bile duct …

… Peroral choledochoscopy (POCS)2–8 has been developed as a diagnostic endoscopy in
patients with indeterminate biliary tract diseases. Newly developed peroral …

… Narrow-band imaging (NBI) has shown promising results in detecting dysplasia in the
esophagus and colon, but its utility in the bile duct … underlying inflammatory bowel disease. The …

… endoscopy tools for observation of bile duct lesions that are difficult to differentiate … biliary
tract disease using chromoendoscopy (CE) with methylene blue or autofluorescence imaging …

… special interest in biliary diseases. Narrow-band imaging (NBI) is an imaging technique that
… evaluation of mucosal aberrations in the GI tract, its use in the biliary tree has been limited. …

… bile duct brush cytology and/or tissue sampling is the standard method used to distinguish
benign bile duct … NBI yields clear images in patients with diseases of the GI tract, suggesting …

… In diagnosing pancreatobiliary diseases, it is widely accepted that … pancreatobiliary diseases
because the scope is not narrow … images, as for the bile in the biliary tract. However, the NBI …

… Direct POC using an ultraslim upper endoscope, that is, single-operator cholangioscopy,
enables optimal diagnosis of various biliary tract diseases with high-quality endoscopic imaging…