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Indications for peroral cholangioscopy and pancreatoscopy Akio Katanuma 1 1Department of Gastroenterology and Hepatology, Sapporo Medical University, Hokkaido, Japan Keyword: POCS , POPS , bile duct stone , bile duct cancer , interventional EUS pp.891-896
Published Date 2025/7/25
DOI https://doi.org/10.24479/endo.0000002136
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 Peroral cholangioscopy (POCS) and peroral pancreatoscopy (POPS) have improved since the development of the prototype of the fiber scope in the 1970s. Images have become clearer with the development of electronic imaging, endoscopes with smaller diameters, dramatically improving operability. The advantage of POCS/POPS is that it allows direct observation of the lumens of the bile duct and pancreatic duct. This makes it possible to diagnose and treat many pancreatic and biliary diseases. In the diagnostic field, it is used for differential diagnosis of benign and malignant diseases, as well as for diagnosis of the superficial extension of bile duct cancer. In the therapeutic field, it is utilized for the fragmentation of bile duct stones that are difficult to remove with conventional endoscopic treatment, using electronic hydraulic lithotripsy (EHL) and laser lithotripsy of pancreatic stones. In addition, recently, it is also possible to approach the intestinal tract after upper gastrointestinal tract reconstruction surgery or from the route after interventional EUS.


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電子版ISSN 印刷版ISSN 0915-3217 東京医学社

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