Accessory Right Inferior Hepatic Vein

Variations in hepatic vascular anatomy are common. They may occur in the arterial, portal venous or hepatic venous systems. This is an important consideration in patients undergoing liver surgery, transplantation and radiological intervention. The most common variation in the hepatic venous system is an accessory right inferior hepatic vein. It drains the posterior part of the right lobe (mainly segments 6 and 7) directly into the IVC. This venous pattern is present in approximately 48% of the population.
References:
1. Saylisoy S, et al. Multislice CT angiography in the evaluation of hepatic vascular anatomy in potential right lobe donors. Diagnostic & Interventional Radiology, 2005 Mar;11(1):51-9
2. Orguc S, et al. Variations of hepatic veins: Helical computerized tomography experience in 100 consecutive living liver donors with emphasis on right lobe. Transplant Proceedings. 2004 Nov;36(9):2727-32.
Credit: Dr Donna D'Souza
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