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Left Hepatic Duct
Digestive System

Left Hepatic Duct

Ductus hepaticus sinister

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The left hepatic duct is formed by the merging of segmental intrahepatic ducts and carries bile from the left liver, and usually, the caudate lobe (Standring, 2016).

Structurally, the left hepatic duct has a mucosal layer and a fibrous layer (Standring, 2016). The mucosal layer consists of a single cell epithelium on the luminal surface, small longitudinal folds, mucous glands, and loose connective tissue.

The fibrous layer deep to this isn’t well formed in the left hepatic duct and consists of mostly connective tissue and elastin, with few smooth muscle fibers (Gulwani, 2012).

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Key Features/Anatomical Relations

The left hepatic duct becomes extrahepatic and runs along the inferior edge of liver segment IV for several centimeters. It’s longer and more horizontally oriented than the right hepatic duct. It ends in the porta hepatis where it merges with the right hepatic duct to form the common hepatic duct (Standring, 2016).


The left hepatic duct transmits bile from the left liver to the common hepatic duct.


Gulwani, H. (2012) Histology-extrahepatic bile ducts. Gallbladder & extrahepatic bile ducts. in new tab/window): (Accessed: August 7th 2020).

Standring, S. (2016) Gray's Anatomy: The Anatomical Basis of Clinical Practice. Gray's Anatomy Series 41 edn.: Elsevier Limited.

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Common Hepatic Duct

ScienceDirect image

The CHD courses ventrally and inferiorly from the porta hepatis in the hepatoduodenal ligament accompanied by the portal vein, which lies posteriorly, and the hepatic artery, which lies medially.

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