Table 2. AJCC TNM seventh and eighth edition: stage.
| Seventh edition | Age <45 years | Eighth edition | Age <55 years | ||||
|---|---|---|---|---|---|---|---|
| I | Any T | Any N | M0 | I | Any T | Any N | M0 |
| II | Any T | Any N | M1 | II | Any T | Any N | M1 |
| Seventh edition | Age ≥45 years | Eighth edition | Age ≥55 years | ||||
| I | T1a/b | N0 | M0 | I | T1a/b
T2 |
N0/NX
N0/NX |
M0
M0 |
| II | T2 | N0 | M0 | II | T1a/b
T2 T3a/b |
N1a/b
N1a/b Any N |
M0
M0 M0 |
| III | T1a/b
T2 T3 |
N1a
N1a N0, N1a |
M0
M0 M0 |
III | T4a | Any N | M0 |
| IVa | T1a/b
T2 T3 T4a |
N1b
N1b N1b N0, N1a, N1b |
M0
M0 M0 M0 |
IVa | T4b | Any N | M0 |
| IVb | T4b | Any N | M0 | IVb | Any T | Any N | M1 |
| IVc | Any T | Any T | M1 | - | - | - | - |
AJCC, American Joint Cancer Committee; TNM, tumor, node, and metastasis.