PMC6176846_01
(a). Endoscopic retrograde cholangiopancreatography revealed a 5-cm-long disruption of contrast medium flow in the common bile duct, extending from the confluence of the cystic and common hepatic ducts to the distal bile duct (bracket), with significant dilation of the intrahepatic bile duct. Therefore, an endoscopic retrograde biliary drainage (ERBD) stent was inserted and placed. (b) A CT scan image revealed a contrast-enhanced protruding lesion that filled the lumen of the distal bile duct (arrow). This lesion did not extend beyond the wall of the bile duct, and neither infiltration into other organs nor clear lymphadenopathy was observed. (c) PET-CT scan revealed accumulation of FDG coinciding with the lesion in the bile duct (arrow), and no clear findings indicative of distant metastasis.
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Therefore, an endoscopic retrograde biliary drainage (ERBD) stent was inserted for biliary drainage (Fig. 1a). This lesion did not extend beyond the walls of the bile duct, and neither infiltration into other organs nor no clear lymphadenopathy was observed (Fig. 1b). Positron emission tomography (PET)-CT scan revealed accumulation of fluorodeoxyglucose (FDG) that coincided with the lesion in the bile duct, and there were no clear findings of distant metastasis (Fig. 1c).