Percutaneous insertion of a novel dedicated metal stent to treat malignant hilar biliary obstruction

Figure 5 Bilateral self-expandable metallic stent placement can be achieved with side-by-side or stent-in-stent techniques. A: Stent-by-stent technique: Two parallel and close self-expandable metallic stent (SEMS) at and below the hepatic confluence to drain the bile duct of both hepatic lobes; B: Stent-in-stent technique: Bilateral SEMS placed in a Y-configuration, in which a second stent across through the mesh of the first stent.