“…However, the clinical application is limited mainly by technical difficulties and complications associated with bilateral stenting. 1, [16][17][18][19][20][21][22] As a result of recent advancements in devices for the endoscopic biliary intervention, complex multiple stenting for advanced hilar cancer has become amenable to endoscopic management. 2,3,12,23 We suggested that use of a Y stent for bilateral stenting could be a useful method, compared with other methods such as previous stent-in-stent or parallel arrangement methods.…”