困难胆总管巨大结石的内镜下治疗
胆总管结石是临床上的一种常见病，首选内镜治疗，困难胆总管巨大结石(直径 > 15 mm)难以通过常规内镜方式清除，需要内镜下乳头大球囊扩张术、机械碎石术、胆道镜辅助碎石、体外冲击波碎石和胆道支架植入术等介入治疗。
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