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normal cbd

Common bile duct

The common bile duct (CBD), which is sometimes simply known as the bile duct, is formed by the union of the cystic duct and common hepatic duct (CHD).

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Terminology

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.

Gross anatomy

The CBD is approximately 8 cm long and usually 2 :

    partially covered posteriorly (most common:

50%)

  • completely covered
  • completely uncovered
  • CBD may pass laterally to the pancreatic head (least common)
  • The common bile duct (CBD), which is sometimes simply known as the bile duct, is formed by the union of the cystic duct and common hepatic duct (CHD). Terminology On ultrasound imaging, it is not always possible to confidently see where the cy…