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. 2022 Jan 17;8:14. doi: 10.1186/s40792-022-01368-y

Fig. 2.

Fig. 2

Endoscopic retrograde cholangiography revealed a protruding tumor in the hilar bile duct with intrahepatic bile duct dilatation. Repeated biopsies showed that the tumor extended from the hepatic duct confluence to the intrapancreatic bile duct around the superior edge of the pancreas. A white arrowhead shows the root of the cystic duct