The standard terminology from the Nomina Anatomica Veterinaria only describe the 3 main hepatic veins (left, middle and high hepatic veins). An ad hoc nomenclature was then developed by some authors to clearly identify and describe all other vessels :
- Lobar hepatic vein: A vein draining a single hepatic lobe. There may be one, two or more lobar hepatic veins draining a single lobe;
- Main lobar hepatic vein: The biggest hepatic vein draining a lobe;
- Minor lobar hepatic vein: Any smaller lobar hepatic vein with the same drainage (hepatic veins) as the main lobar vein;
- Accessory lobar hepatic vein: A lobar hepatic vein having a different drainage than the main lobar hepatic vein;
- Secondary lobar hepatic vein: Any further ramification of a lobar hepatic vein.
Source : Vascular anatomy of canine hepatic venous system: a basis for liver surgery. Mari L, Acocella F. Anat Histol Embryol. 2015 Jun;44(3):212-24. doi: 10.1111/ahe.12129. Epub 2014 Aug 5. PMID: 25090952
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