|
Primary Tumor |
|
| T2 | Tumor less than 1 cm in diameter |
| T2 | Tumor >1 cm bur < 4 cm in diameter |
| T3 | Tumor >4 cm in diameter |
| T4 | Tumor of any size extending beyond the thyroid capsule |
|
Regional Lymph Nodes |
|
| N0 | No regional lymph node metastases |
| N1 | Regional lymph node metastases |
|
Distant Metastasis |
|
| M0 | No distant metastases |
| M1 | Distant metastases |
|
Stage Grouping |
|
| Stage I | <45 years Any T, any N, M0 |
| Stage I | >45 years T1,N0,M0 |
| Stage II | Any T, any N, M1 T2 or T3, N0,M0 |
| Stage III | T4, N0,M0 |
| Any T,N1,M0 | |
| Stage IV | Any T, any N,M1 |