Staging Perihilar Extrahepatic Cholangiocarcinoma

 

STAGING PERIHILAR EXTRAHEPATIC CHOLANGIOCARCINOMA

 

Perihilar (also called hilar) cholangiocarcinomas develop at the hilum, where the hepatic ducts have joined and are just leaving the liver. These are the most common type of cholangiocarcinomas. These cancers are grouped with distal bile duct cancers as extrahepatic bile duct cancers.


T Categories for Perihilar Cholangiocarcinoma:

 

TX

No description of the tumor’s extent is possible because of incomplete information.

T0

There is no evidence of a primary tumor.

Tis

Cancer cells are only in the mucosa (the innermost layer of the bile duct) and have not grown into deeper layers of the bile duct. This stage is also known as intramucosal carcinoma,

T1

The cancer has grown into deeper layers of the bile duct wall, such as the muscle layer or the fibrous tissue layer.

T2

The tumor has grown through the wall of the bile duct and into nearby tissue.


Stage T2 is split into 2 groups:

T2a: The tumor has grown through the wall of the bile duct and into surrounding fat.

T2b: The tumor has grown through the wall of the bile duct and into nearby liver tissue.

T3

The cancer is growing into branches of the main blood vessels of the liver (the portal vein and/or the hepatic artery) on one side (left or right).

T4

the cancer is growing into the main blood vessels of the liver (the portal vein and/or the common hepatic artery) or into branches of these vessels on both sides (left and right), OR the cancer is growing directly into other bile ducts while part of the tumor is growing into one of the main blood vessels.

 

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