Table 4.
Variable | Parameter |
---|---|
Criteria | |
1. No. of tumors | Solitary |
2. Size of largest tumor | ≤2 cm |
3. Vascular or major biliary invasion | vp0, va0, b0‐b2 |
Tumor classification | |
T1 | All 3 criteria are fulfilled |
T2 | Only 2 of the 3 criteria are fulfilled |
T3 | Only 1 of the 3 criteria is fulfilled |
T4 | None of the 3 criteria are fulfilled |
Stage | |
I | T1N0M0 |
II | T2N0M0 |
III | T3N0M0 |
IVA | T4N0M0 |
T1‐T3N1M0 | |
IVB | T4N1M0 |
AnyTN0,N1M1 |
Abbreviations: b0‐b2, no biliary invasion or minor biliary invasion within second‐order branch of the bile duct; M, metastasis status; N, lymph node status; T, tumor classification; va0, no arterial invasion; vp0, no portal vein invasion.