Supplementary material for this article can be found on the H EPATOLOGY website ( ).

jws-hep.21387.fig1.pdf143KSuppl Fig 1. A representative picture of borderline malignancy observed in biliary papilloma(tosis). (HE staining, x100 and x400)
jws-hep.21387.fig2.pdf86KSuppl Fig. 2. Radiological features of papillary-CC (carcinoma in situ). Contrast material-enhanced computed tomography of the abdomen showing an intraductal tumor in the dilated intrapancreatic bile duct (arrow).
jws-hep.21387.fig3.pdf140KSuppl Fig 3. MUC1 expression in papillary-CC with tubular adenocarcinoma. MUC1 expression is observed mainly in the invasive lesion. (BD, bile duct lumen; left: HE staining; right: MUC1 staining; x100)

Please note: Wiley Blackwell is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.