SEER Training Modules
11/27/12 - The NCI is working on updating materials.
Head & Neck Staging: Table Two
Pharynx (C01, C05.1, C09, C10.0, C10.2, C10.3, C11-C13)
| TNM Classification |
Histological/Clinical Features |
| TX |
Primary tumor cannot be assessed |
| T0 |
No evidence of primary tumor |
| Tis |
Carcinoma in situ |
Oropharynx
| TNM Classification |
Histological/Clinical Features |
| T1 |
2 cm or less |
| T2 |
> 2 but < 4 cm |
| T3 |
> 4 cm |
| T4 |
Invades adjacent structures |
| T4a |
Invades larynx, deep/extrinsic muscle of tongue, medial pterygoid, hard palate, or mandible |
| T4b |
Invades lateral pterygoid muscle, pterygoid plates, lateral nasopharynx, or skull base or encases carotid artery |
Hypopharynx
| TNM Classification |
Histological/Clinical Features |
| T1 |
Limited to one sub site of hypopharynx and 2cm or < |
| T2 |
> 2 but < 4 cm without fixation or more than one sub site or adjacent site |
| T3 |
> 4 cm or with hemilarynx fixation |
| T4a |
Invades thyroid/cricoid cartilage, hyoid bone, thyroid gland, esophagus, or central compartment soft tissue |
| T4b |
Invades prevertebral fascia, encases carotid artery, or involves mediastinal structures |
Nasopharynx
| TNM Classification |
Histological/Clinical Features |
| T1 |
Confined to nasopharynx |
| T2 |
Extends to soft tissue of oropharynx and/or nasal fossa |
| T2a |
Without parapharyngeal extension |
| T2b |
With parapharyngeal extension |
| T3 |
Invades bony structures and/or paranasal sinuses |
| T4 |
Intracranial extension, and/or involvement of cranial nerves, infratemporal fossa, hypopharynx, or orbit |
