Fifty-three patients received 107 times of interventional therapy through endoscopic retrograde cholangiography ( ERC) which included 68 nasobiliary catheter placements,26 biliary balloon dilatations and stent placements and 13 ERC.

• 53例BS患者共接受经十二指肠镜逆行胆管造影(ERC)介入治疗107次,包括鼻胆管引流术68次、球囊扩张及胆管内支架术26次和胆管造影术13次。