veins that accompany renal arteries; open into the vena cava at the level of the 2nd lumbar vertebra
双语例句
The white arrow marks a renal vein thrombus. 白色的箭头指示肾静脉血栓。
In some cases, the artery can be found to initially angle superiorly and arch over either the renal vein or one of its branches before proceeding inferiorly. 在有些情况下，发现这条动脉首先向上弯曲，然后形成拱形越过肾静脉或是肾静脉的一条分支，最后才向下行走。
