Congenital stenosis of vena cava
Congenital stenosis of vena cava is a congenital anomaly in which the superior vena cava or inferior vena cava has an aberrant interruption or coarctation . 
<triplet> superior vena cava <subj> inferior vena cava <obj> opposite of <triplet> inferior vena cava <subj> superior vena cava <obj> opposite of