What is CCA? — 1 of 2

CCAs are a form of biliary tract cancer

CCAs are rare, heterogeneous tumours arising in the bile duct2

CCAs are the most common primary malignancies of the bile duct, accounting for 10–20% of all primary hepatic cancers, but only 3% of all gastrointestinal
tumours2-5

These epithelial tumours are classified into anatomical subtypes, iCCA and eCCA. The latter is subclassified into pCCA and
dCCA5-7

FGFR2 fusions/rearrangements are strong oncogenic drivers and are the most common FGFR alteration, occurring almost exclusively in 10–16% of iCCA cases1

Click the question marks above to learn more about the different subtypes of CCA.

Intrahepatic

Located proximal to the secondary branches of the left and right hepatic ducts5

Perihilar
(extrahepatic)

Located between the secondary branches of the right and left hepatic ducts and the common hepatic duct proximal to the cystic duct origin5

Distal
(extrahepatic)

Tumours of the common bile duct, from the cystic duct origin up to, but not including, the ampulla of Vater5
Labelled liver diagram

Adapted from reference 5.

Click the question marks above to learn more about the different subtypes of CCA.