Percutaneous catheter drainage in combination with choledochoscope-guided debridement in treatment of peripancreatic infection

Figure 1 Ultrasound-guided percutaneous puncture and catheter drainage. A: An 18-G puncture needle is inserted into the peripancreatic focus under the guidance of ultrasound with a guidewire placed in the focus through the puncture needle lumen; B: An 8-Fr drainage catheter is immediately delivered into the focus along the guidewire after adequate expansion of abdominal wall layers.