Extension Grade LVI Table
Notes
**Note**: For CS Extension codes 100, 300, 310, 320 and 500 ONLY, the AJCC 7th Edition T category is assigned based on the value of Grade and Lymph-vascular Invasion as shown in this table.| CS Extension | Grade | Lymph-vascular Invasion | T Category |
|---|---|---|---|
| 100, 300, 305, 310, 320 | 1-2 | 0 | T1a |
| 100, 300, 305, 310 | 1-2, 3-4, 9 | 1 | T1b |
| 100, 300, 305 | 1-2, 9 | 8-9 | T1NOS |
| 100, 300, 305, 310 | 3-4 | 0, 8-9 | T1b |
| 100, 300, 305 | 9 | 0 | T1NOS |
| 310 | 1-2, 9 | 8-9 | T1a |
| 310 | 9 | 0 | T1a |
| 320 | 1-2 | 1, 8-9 | T1b |
| 320 | 3-4, 9 | 0, 1, 8-9 | T1b |
| CS Extension | Grade | Lymph-vascular Invasion | T Category |
|---|---|---|---|
| 100 | 1-2 | 0 | T1a |
| 100 | 1-2 | 1 | T1b |
| 100 | 1-2 | 8-9 | T1NOS |
| 100 | 3-4 | 0 | T1b |
| 100 | 3-4 | 1 | T1b |
| 100 | 3-4 | 8-9 | T1b |
| 100 | 9 | 0 | T1NOS |
| 100 | 9 | 1 | T1b |
| 100 | 9 | 8-9 | T1NOS |
| 300 | 1-2 | 0 | T1a |
| 300 | 1-2 | 1 | T1b |
| 300 | 1-2 | 8-9 | T1NOS |
| 300 | 3-4 | 0 | T1b |
| 300 | 3-4 | 1 | T1b |
| 300 | 3-4 | 8-9 | T1b |
| 300 | 9 | 0 | T1NOS |
| 300 | 9 | 1 | T1b |
| 300 | 9 | 8-9 | T1NOS |
| 305 | 1-2 | 0 | T1a |
| 305 | 1-2 | 1 | T1b |
| 305 | 1-2 | 8-9 | T1NOS |
| 305 | 3-4 | 0 | T1b |
| 305 | 3-4 | 1 | T1b |
| 305 | 3-4 | 8-9 | T1b |
| 305 | 9 | 0 | T1NOS |
| 305 | 9 | 1 | T1b |
| 305 | 9 | 8-9 | T1NOS |
| 310 | 1-2 | 0 | T1a |
| 310 | 1-2 | 1 | T1b |
| 310 | 1-2 | 8-9 | T1a |
| 310 | 3-4 | 0 | T1b |
| 310 | 3-4 | 1 | T1b |
| 310 | 3-4 | 8-9 | T1b |
| 310 | 9 | 0 | T1a |
| 310 | 9 | 1 | T1b |
| 310 | 9 | 8-9 | T1a |
| 320 | 1-2 | 0 | T1a |
| 320 | 1-2 | 1 | T1b |
| 320 | 1-2 | 8-9 | T1b |
| 320 | 3-4 | 0 | T1b |
| 320 | 3-4 | 1 | T1b |
| 320 | 3-4 | 8-9 | T1b |
| 320 | 9 | 0 | T1b |
| 320 | 9 | 1 | T1b |
| 320 | 9 | 8-9 | T1b |