case_images: PMC7399065_01
case_images: Operation process. (A) The duodenal papilla appeared. (B) An needle knife and a guide wire were used to achieve successful selective biliary cannulation. (C) Under fluoroscopy, cholangiography was performed and showed dilation of the CBD Multiple filling defects were observed in the CBD. (D) A grasping basket was used to remove multiple black stones. (E) A stone retrieval balloon was used to remove the stones in CBD. (F) A drainage catheter was placed at the end of the procedure.
case_images: fped-08-00435-g0001.jpg
case_images: PMC7399065_01_fped-08-00435-g0001.jpg
case_images: F1
case_images: A 6 Fr straight-tip nasobiliary drainage catheter was placed at the end of the ERCP (Figures 1A-F).