Table 2.
TNM stage | Criteria | ||
---|---|---|---|
Tx | Primary tumor cannot be assessed | ||
T0 | No evidence of primary tumor | ||
Tis | Carcinoma in situ (intraductal tumor) | ||
T1 | Solitary tumor without vascular invasion | ||
T2a | Solitary tumor with vascular invasion | ||
T2b | Multiple tumors, with or without vascular invasion | ||
T3 | Tumor perforating the visceral peritoneum or involving the local extrahepatic structures by direct invasion | ||
T4 | Tumor with periductal invasion | ||
Nx | Regional lymph nodes cannot be assessed | ||
N0 | No regional lymph node metastases | ||
N1 | Regional lymph node metastases present | ||
M0 | No distant metastases | ||
M1 | Distant metastases | ||
| |||
AJCC/UICC stage | Tumor | Node | Metastasis |
| |||
0 | Tis | N0 | M0 |
I | T1 | N0 | M0 |
II | T2 | N0 | M0 |
III | T3 | N0 | M0 |
IV A | T4 | N0 | M0 |
Any T | N1 | M0 | |
IV B | Any T | Any N | M1 |
TNM, tumor, node, metastasis.