Left hepatic duct
The left hepatic duct and the right hepatic duct allow for the transfer of bile from the liver. These ducts are formed by the intrahepatic ducts and are a part of a duct system that leads to the gallbladder. These ducts exit the liver in a common sheath alongside the branches of the hepatic artery and portal vein. The bile that flows through the right and left hepatic ducts drains into the common hepatic duct. The size of the left hepatic duct depends on the quadrate lobe's width and may either be long and transverse or short and oblique. It is located behind the portal vein's left branch. The left hepatic duct enters the liver's umbilical fissure at its upper end, where it is joined by the segment II, III, and IV duct tributaries. To expose the left hepatic duct, the peritoneum must be divided at the quadrate lobe's base and the hilar plate's opening. Sixty percent of the time, the left hepatic duct unites with the right hepatic duct within the hilar plate's main trunk outside of the liver. The other forty percent of the time, the right posterior and anterior sectoral ducts enter the left hepatic duct separately.
Written and medically reviewed by the Healthline Editorial Team
In Depth: Left hepatic duct