Success of stent-in-stent deployment after intraductal radiofrequency ablation for hepatic hilar obstruction.

A cholangioscope inserted before intraductal RFA to prevent bile duct perforation revealed a tumor in the bile duct (Fig. 3 Cholangiography views. a The dilated bile duct after radiofrequency ablation. b Deployment of multiple uncovered self-expandable metal stents was easily achieved using the stent-in-stent technique. 2018, 15, 722 - 727 4 Chahal P., Baron T. H. Expandable metal stents for endoscopic bilateral stent-within-stent placement for malignant hilar biliary obstruction. [Extracted from the article]