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In chronological order of appearance, they are named postcardinal, subcardinal, and supracardinal veins.
Swaiman et al (6) suggested that due to the fact that supracardinal veins form last, the supra-renal and renal IVC may form normally from the subcardinal veins, and the infrarenal segment may not develop because of a later insult to the supracardinal veins.
The prerenal segment is derived from the right subcardinal vein, while the renal segment is derived via anastomoses between the subcardinal and supracardinal veins, and the postrenal segment is derived from the right supracardinal vein.
The renal segment develops from the anastomosis between the subcardinal and supracardinal veins while the hepatic segment derives from the right vitelline vein [6, 7].