right portal fissure

right portal fissure

[TA]
the plane of the right hepatic vein that separates the right lateral and medial divisions of the right (part of the) liver.
Synonym(s): fissura portalis dextra [TA]

right portal fissure

An obsolete term for an anteroposterior intrahepatic plane defined by the course of the right hepatic vein, which separates the anterior and posterior segments of the right lobe of the liver from the middle segment of the right lobe.
References in periodicals archive ?
(2017), reported 20-35 % of these cases]; it emerges from the right portal branch in 79 %; the branch for segment V, after deepening 2 cm in its segmental parenchyma, gives anterior, lateral, posterior and medial branches which encompass the parenchyma between the right portal fissure (A05.8.01.036) and the main portal fissure (A05.8.01.035) from the inferior borderof the liver (A05.8.01.024) to the inferior vena cava (A12.3.09.001).
The right middle hepatic vein (5 % of cases) and / or the right inferior hepatic vein (61 % of cases) are inside the right portal fissure; the latter reaches up to 20 mm of diameter, draining segments V, VI and VII.
The branch for segment V (A05.8.01.047) (10 mm diameter) emerged from the left portal vein in 21 % of cases, it emerged from the right portal vein in 79 %; this segmental branch, after deepening 2 cm in its segmental parenchyma gave anterior, lateral, posterior and medial branches distributed between the right portal fissure (A05.8.01.036) and the main portal fissure (A05.8.01.035) from the lower border of the liver (A05.8.01.024) to the inferior vena cava from behind; the medial branches reached higher in the hepatic dome.
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