Table 3. Prognositc Groups of American Joint Committee on Cancer (AJCC) staging system for iCCA, pCCA, and dCCA.
| iCCA | pCCA | dCCA | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Stage 0 | Tis | N0 | M0 | Tis | N0 | M0 | Tis | N0 | M0 |
| Stage I | T1 | N0 | M0 | T1 | N0 | M0 | |||
| IA | T1a | N0 | M0 | ― | ― | ||||
| IB | T1b | N0 | M0 | ― | ― | ||||
| Stage II | T2 | N0 | M0 | T2a-b | N0 | M0 | |||
| IIA | ― | ― | T1N1M0 or T2N0M0 | ||||||
| IIB | ― | ― | T2-3N1M0 or T3N0M0 | ||||||
| Stage III | |||||||||
| IIIA | T3 | N0 | M0 | T3 | N0 | M0 | T1-3, N2M0 | ||
| IIIB | T4 or Any T | N0 or N1 | M0 | T4 | N0 | M0 | T4, any N, M0 | ||
| IIIC | ― | Any T | N1 | M0 | ― | ― | ― | ||
| Stage IV | Any T | Any N | M1 | Any T | Any N | M1 | |||
| IVA | ― | Any T | N2 | M0 | |||||
| IVB | Any T | Any N | M1 | ||||||
| Histologic Grade(G) | |||||||||
| GX | Grade cannot be assessed | ||||||||
| G1 | Well differentiated | ||||||||
| G2 | Moderately differentiated | ||||||||
| G3 | Poorly differentiated | ||||||||