Above are anomalies of the subcardinal veins leads to abnormalies of the renal veins
Anomalies of the posterior cardinal veins include retrocaval/circumcaval ureter
Anomalies of the supracardinal veins leads to most abnormalities that Interrupte of the inferior vena cava with azygous/ hemiazygous continuation.Persistence of the left supracardinal vein left inferior vena cava as the persistence of both left and right supracardinal vein double inferior vena cava vein.
Superior vena cava (SVC) syndrome is a clinical condition that occurs as a result of obstruction of the SVC
persistance of the left sinus horn