Objective To explore the advantages and disadvantages of ultrasound guided percutaneous transhepatic biliary drainage(PTBD) in malignant biliary obstructive jaundice.

• 目的探讨B超引导下经皮经肝穿刺胆道引流(PTBD)治疗胰胆系肿瘤所致恶性阻塞性黄疸的优缺点。