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A case of an extremely large common bile duct stone treated by electrohydraulic lithotripsy via peroral cholangioscopy

A case of an extremely large common bile duct stone treated by electrohydraulic lithotripsy via peroral cholangioscopy

Gastroenterological Endoscopy 31(11): 3011-3015

We reported a case of an extremely large common bile duct stone which was successfully treated by electrohydraulic lithotripsy under peroral cholangioscopy. The patient was a 47-year old-woman who had complains of epigastric pain and vomiting. The common bile duct stone was diagnosed by abdominal ultrasonography and ERCP showed the presence of a large 60 .times. 26 mm stone. Electrohydraulic lithotripsy was performed under peroral cholangioscopy. An equipment used included a mother-baby fiberscope (mother:TJF-M 20, baby: CHF-B 20, Olympus). A crushing device was the "Stone Disintegrator" (model SD-1, Northgate Research Co. USA.), and a 3 Fr single axle bi-polar electrode was utilized. After two sessions of lithotripsy, the stone was reduced to about 25 .times. 21 mm in size, being accompanied by smaller fragments. A usual mechanical lithotriptor and a basket catheter were then used to complete the task. An analysis of the stone showed a composition of 84% cholesterol and 16% bilirubin calcium. This case also involved an unfused pancreatic duct.

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Accession: 006932022

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