CS Extension
| 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 trachea | NA | NA | L | L |
| 300 | Localized, NOS | NA | NA | L | L |
| 400 | Adjacent connective tissue: Arch of aorta Azygos vein, right Brachiocephalic vein Carotid sheath Common carotid artery(ies) Jugular arch Phrenic nerves Pretracheal fascia Recurrent laryngeal nerve Subclavian artery(ies) Vagus nerve |
NA | NA | RE | RE |
| 600 | Adjacent organs/structures: Cricoid cartilage Esophagus Pleura, NOS: Parietal Visceral Right and left main bronchi Sternum Thymus Thyroid gland Vertebral column |
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 not stated Primary tumor cannot be assessed Not documented in patient record |
NA | NA | U | U |