Fig. 3
From: Extraluminal recanalization for postoperative biliary obstruction using transseptal needle
a A 6-F balloon catheter was placed at the distal end of right biliary obstruction, and a transseptal needle was inserted into the ostium of right hepatic duct through the left biliary access route. b The right hepatic duct was punctured by targeting the inflated balloon with the transseptal needle. c Following the successful puncture, a 0.014-in. guidewire was advanced through the transseptal needle lumen and pulled out by a loop snare catheter from the right biliary access route. d An internal–external PTBD catheter was placed into the common bile duct through the extraluminal recanalization tract