CS Extension
This input is used for staging
Notes
**Note 1**: Connective tissues large enough to be given a specific name are considered adjacent structures. For example, prevertebral fascia and jugular vein have names. Continuous tumor growth from one organ into an adjacent named structure is coded to 600.Default
999NAACCR Item
NAACCR #2810| Code | Description | AJCC 7 T | AJCC 6 T | Summary Stage 1977 T | Summary Stage 2000 T |
|---|---|---|---|---|---|
| 000 | In situ, intraepithelial, noninvasive | NA | NA | IS | IS |
| 100 | Invasive tumor confined to site of origin | NA | NA | L | L |
| 300 | Localized, NOS | NA | NA | L | L |
| 400 | More than one region of pharynx involved: Oropharynx Nasopharynx Hypopharynx |
NA | NA | RE | RE |
| 500 | Pharynx and oral cavity involved | NA | NA | RE | RE |
| 550 | Any of codes 100-500 WITH fixation |
NA | NA | RE | RE |
| 600 | Extension to adjacent structures (See note) |
NA | NA | RE | RE |
| 800 | Further contiguous extension | NA | NA | D | D |
| 950 | No evidence of primary tumor | NA | NA | U | U |
| 999 | Unknown; extension cannot be assessed Primary tumor cannot be assessed Not documented in patient record |
NA | NA | U | U |