Common hepatic duct

Last revised by Dr Daniel J Bell on 25 Oct 2019

The common hepatic duct (CHD) is formed by the junction of the right and left hepatic ducts. It joins the cystic duct to form the common bile duct (CBD). It is approximately 4 cm long and 4 mm in diameter. 

Together with the cystic duct (laterally) and cystic artery (superiorly), they form Calot's triangle.


On ultrasound imaging, it is not always possible to confidently see where the cystic duct enters the common hepatic duct to form the common bile duct. Therefore it is common practice to use the term common duct (CD) as a term conflating the common hepatic and common bile ducts. 

ADVERTISEMENT: Supporters see fewer/no ads

Cases and figures

  • Figure 1
    Drag here to reorder.
  • Figure 2: common duct anatomy and variation
    Drag here to reorder.
  • Case 1: normal CT intravenous cholangiogram
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.