目的比较金属支架与塑料支架(内涵管)置入术治疗恶性胆管梗阻的临床疗效。
Objective To compare the clinical effectiveness of metal stent with plastic stent in treating malignant biliary obstruction.
内视镜支架置入术：如果肿瘤阻塞了胆管，那么就需要通过手术来植入一个支架(细且灵活的管状物)来使该阻塞区域集聚胆汁排出。
Endoscopic stent placement: If the tumor is blocking the bile duct, surgery may be done to put in a stent (a thin, flexible tube) to drain bile that has built up in the area.
目的观察经皮胆管内支架置入术姑息性治疗老年人多部位、多节段肝胆管恶性梗阻的效果。
Objective To observe the short-term results of intervention al therapy for elderly patients with multi-segment and multi-location malignant biliary obstruction.
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