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Procedure of air cholangiography and endoscopic bilateral SIS placement of SEMS. (A) Air cholangiography through a papillotome. (B) The first stent was inserted into the left hepatic duct. (C) The guidewire was placed in the right hepatic duct through the stent mesh and the second stent was then inserted. (D) Bilateral metallic stenting was performed using the SIS technique.
SEMS, self-expandable metallic stent; SIS, stent-in-stent.
