This is the final level at which to recognize an inferior vena cava interruption with azygos or hemizygos continuation.
此切面是辨别上腔静脉连续性中断，而奇静脉或半奇静脉连续性正常。
2
At the level of azygos vein, 100% of the lymph nodes of azygos vein and the superior aortic recess were located among the superior vena cava, arch of azygos vein, trachea and concavity of aortic arch.