Part of Cancer staging guidance sheets
Intrahepatic bile ducts (ICD10 C22.1)
Introduction
This is the data sheet for TNM 8th edition staging of intrahepatic bile ducts (ICD10 C22.1)
For more detailed information regarding TNM staging, please see pages 83-84 of the UICC TNM 8 book or visit the Wiley and UICC website.
Stage groupings
|
Stage Group |
T stage |
N stage |
M stage |
|---|---|---|---|
|
Stage I |
T1 |
N0 |
M0 |
|
Stage IA |
T1a |
N0 |
M0 |
|
Stage IB |
T1b |
N0 |
M0 |
|
Stage II |
T2 |
N0 |
M0 |
|
Stage IIIA |
T3 |
N0 |
M0 |
|
Stage IIIB |
T4 |
N0 |
M0 |
|
|
Any T |
N1 |
M0 |
|
Stage IV |
Any T |
Any N |
M1 |
TNM clinical classification
T - primary tumour
| T value | Description |
|---|---|
|
TX |
Primary tumour cannot be assessed |
|
T0 |
No evidence of primary tumour |
|
Tis |
Carcinoma in situ (intraductal tumour) |
|
T1a |
Solitary tumour 5 cm or less in greatest dimension without vascular invasion |
|
T1b |
Solitary tumour more than 5 cm in greatest dimension without vascular invasion |
|
T2 |
Solitary tumour with intrahepatic vascular invasion or multiple tumours, with or without vascular invasion |
|
T3 |
Tumour perforating the visceral peritoneum |
|
T4 |
Tumour involving local extrahepatic structures by direct hepatic invasion |
N - regional lymph nodes
| N value | Description |
|---|---|
|
NX |
Regional lymph nodes cannot be assessed |
|
N0 |
No regional lymph node metastasis |
|
N1 |
Regional lymph node metastasis |
M - distant metastasis
| M value | Description |
|---|---|
|
M0 |
No distant metastasis |
|
M1 |
Distant metastasis - This includes metastasis to non-regional lymph nodes, including periaortic, pericaval, superior mesenteric artery and/or coeliac artery lymph nodes. |
TNM pathological classification
pT - primary tumour
The pT categories correspond to the T and N categories as per above.
pN - regional lymph nodes
| pN value | Description |
|---|---|
|
pN0 |
Histological examination of a regional lymphadenectomy specimen will ordinarily include 6 or more lymph nodes. If the regional lymph nodes are negative, but the number ordinarily examined is not met, classify as pN0 |
Last edited: 15 December 2022 9:28 am
