Photodynamic therapy for high-grade dysplasia of bile duct via a choledochoscope

Figure 1 Pathological findings showed moderate-high grade dysplasia of the distal common bile duct lesion (hematoxylin/eosin staining, × 100).

Figure 2 Images taken via the trans-T-tube choledochoscope. A: Before photodynamic treatment (PDT); B: Ten minutes after PDT; C: Two weeks after PDT; D: Three months after PDT.

Figure 3 Trans-T-tube cholangiogram. This image shows the dilated common bile duct and intrahepatic bile duct with an irregular filling defect in the distal common bile duct.