case_images: PMC4427174_01
case_images: A 25-mm enhanced nodule (arrow) in the middle to inferior portion of the CBD accompanied by proximal dilatation of the bile duct.
case_images: crg-0009-0088-g01.jpg
case_images: PMC4427174_01_crg-0009-0088-g01.jpg
case_images: F1
case_images: Contrast-enhanced computed tomography showed a 25-mm enhanced nodule in the middle to inferior portion of the CBD accompanied by proximal dilatation of the bile duct (fig. 1).
case_images: a, b PBM was identified by MRCP (a) and ERCP (b). c, d Intraductal ultrasonography showed that the nodule was papillary.
case_images: crg-0009-0088-g02.jpg
case_images: PMC4427174_01_crg-0009-0088-g02.jpg
case_images: F2
case_images: ERCP, intraductal ultrasonography and magnetic resonance cholangiopancreatography (MRCP) revealed that the nodule was papillary, accompanied by PBM (fig. 2).
case_images: a A 6-mm polyp in the middle portion of the CBD. b1 Normal ductal structure and multiple plasmacyte migration were identified in the polyp (hematoxylin and eosin staining). b2 No atypical cells were found in the biliary mucosa around the polyp. b3 Enlargement of the inset in b1. b1-b3 Hematoxylin and eosin staining.
case_images: crg-0009-0088-g03.jpg
case_images: PMC4427174_01_crg-0009-0088-g03.jpg
case_images: F3
case_images: Macroscopically, we found a 6-mm polyp in the middle CBD (fig. 3a). Microscopically, we identified a normal ductal structure with multiple plasmacyte migration (fig. 3b).