Summary
Seven years have passed since the first report on peroral cholangioscopy by Takekoshi and Takagi (1) in Japan. Recently, several types of peroral cholangioscope with a forceps channel
have been made for this treatment. However, the success rate of insertion of these
instruments into the common bile duct was less than 50 %. Therefore, in cooperation
with Fuji-Photo-Optical Co. Ltd., we have made a new scope with the aim of facilitating
insertion into the bile duct.
Using this new scope, called a double-angle, oblique viewing cholangioscope, we obtain
good orientation in the duodenum in en-face view and close inspection of the duodenal
papilla, which makes possible easier insertion into the common bile duct. This new
scope proved useful in basket removal of bile duct stone, or differential diagnosis
between stones and carcinoma of the biliary tract.
Key words:
Peroral cholangioscopy - Peroral cholangioscope - Endoscopic sphinteropapillotomy
