报告二例下腔静脉闭塞(Budd-Chiari 综合征)伴有侧支循环血管引流下腔静脉血液进入左心房。临床表现为口唇紫绀、杵状指和门脉和下腔静脉高压的症状和体征。采用经皮穿刺下腔静脉球囊扩张术使下腔静脉再通后,血氧饱和度和血氧分压升高至正常,门脉和下腔静脉高压的症状和体征消失。术后多普勒超声于引流血管内无血流频谱发现。 Reported two cases of inferior vena cava occlusion (Budd-Chiari syndrome) with collateral circulation vascular drainage of vena caval blood into the left atrium. Clinical manifestations of cyanosis of the lips, clubbing and portal vein and inferior vena cava symptoms and signs. Percutaneous puncture of inferior vena cava by balloon dilatation of inferior vena cava recanalization, oxygen saturation and partial pressure of oxygen increased to normal, portal and inferior vena cava hypertension symptoms and signs disappeared. Postoperative Doppler ultrasound drainage in the blood flow within the blood flow spectrum was found.