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Approach routes and needle sizes according to the biliary disorders. All patients (A), bile duct stones (B), distal biliary obstruction (C), and hilar biliary obstruction (D). DEHBD/D2: distal extrahepatic bile duct/duodenal second part; PEHBD/D1: proximal extrahepatic bile duct/duodenal bulb; LIHBD/S: left intrahepatic bile duct/stomach; RIHBD/D1: right intrahepatic bile duct/duodenal bulb; EUS-RV: endoscopic ultrasound-guided rendezvous.
