Collaborative Stage for TNM 7 - Revised 10/31/2010 [ Schema ]
| CS Extension | CS SSF 2 Ulceration 000 | CS SSF 2 Ulceration 010 | CS SSF 2 Ulceration 988 | CS SSF 2 Ulceration 999 | 
| 100 | T1a | T1b | ERROR | T1NOS | 
| 200 | T1a | T1b | ERROR | T1NOS | 
| 300 | T1b | T1b | ERROR | T1b | 
| 310-380 | T1NOS | T1NOS | ERROR | T1NOS | 
| 400 | T1NOS | T1b | ERROR | T1NOS | 
| 500 | T1b | T1b | ERROR | T1b | 
| 800 | T1b | T1b | ERROR | T1b | 
| 999 | T1b | T1b | ERROR | T1b |