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Transverse fissure of liver
Inferior surface of the liver.
The portal vein and its tributaries. (Porta hepatis labeled at upper left.)
Latin porta hepatis
Gray's subject #250 1191

The porta hepatis or transverse fissure of the liver is a short but deep fissure, about 5 cm long, extending transversely across the under surface of the left portion of the right lobe of the liver, nearer its posterior surface than its anterior border.

It joins nearly at right angles with the left sagittal fossa, and separates the quadrate lobe in front from the caudate lobe and process behind. It transmits the hepatic portal vein, the hepatic artery proper, the common hepatic duct, nerves and lymphatics. The hepatic duct lies in front and to the right, the hepatic artery to the left, and the portal vein behind and between the duct and artery.

When the patient is supine, and the liver observed inferiorly (as in a surgeon's perspective), the important structures demarcating its inferior aspect can be represented by a hepatic "H" figure. The left vertical limb of the "H" defines the left and right functional lobes, while the right vertical limb of the "H" defines the right and left anatomical lobes. The horizontal line between the vertical limbs of the "H" represents the porta hepatis. The quadrate and caudate lobe lie superior and inferior to this line respectively.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.



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