Fig. 3

Macroscopic findings. A polypoid tumor (red triangle) of approximately 10-mm diameter continuous with the epithelium and a tumor thrombus (arrow) in the dilated common bile duct. Several subepithelial nodules were observed (yellow triangles)
Macroscopic findings. A polypoid tumor (red triangle) of approximately 10-mm diameter continuous with the epithelium and a tumor thrombus (arrow) in the dilated common bile duct. Several subepithelial nodules were observed (yellow triangles)