心包膈静脉扩张致左心旁肿块：４例报告左心包隔静脉是左头臂静脉的一分支，有与膈下静脉吻合的横膈支，在腔静脉阻塞时可以起侧支旁路作用。作者报告了４例心包膈静脉扩张在胸片上表现为心旁肿块的病人，均经下腔静脉造影，ＣＴ和ＭＲ证实有下腔静脉之肝上部分的膜性阻塞... Pericardial diaphragmatic phrenic dilatation of the left paratracheal mass: a report of 4 cases left ventricular septum is a branch of the left brachiocephalic vein, diaphragmatic anastomosis with the diaphragm, in the vena cava occlusion can play a collateral bypass role. The authors reported 4 cases of pericardial phrenic venous dilatation in the performance of chest X-ray mass of the patients, both by inferior vena cava angiography, CT and MR confirmed inferior vena cava in the upper part of the membranous obstruction ...