| 0 |
In situ, intraepithelial, noninvasive |
| 1 |
Localized only (localized, NOS)
- Invasive tumor confined to trachea |
| 2 |
Regional by direct extension only
- 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
- Adjacent organ(s)/structure(s)
+ Cricoid cartilage
+ Esophagus
+ Pleura, NOS
* Parietal
* Visceral
+ Right and left main bronchi
+ Sternum
+ Thymus
+ Thyroid gland
+ Vertebral column |
| 3 |
Regional lymph node(s) involved only
- Mediastinal, NOS
+ Posterior (tracheoesophageal)
- Paratracheal
- Pretracheal
- Tracheal, NOS
- Regional lymph node(s), NOS
+ Lymph node(s), NOS |
| 4 |
Regional by BOTH direct extension AND regional lymph node(s) involved
- Codes (2) + (3) |
| 7 |
Distant site(s)/lymph node(s) involved
- Distant site(s) (including further contiguous extension)
- Distant lymph node(s), NOS
- Distant metastasis, NOS
+ Carcinomatosis
+ Distant metastasis WITH or WITHOUT distant lymph node(s) |
| 9 |
Unknown if extension or metastasis |
