SEER Training Modules
11/27/12 - The NCI is working on updating materials.
Head & Neck Staging: Table Three
Larynx (C32.0, C32.1, C32.2, C10.1)
| TNM Classification |
Histological/Clinical Features |
| TX |
Primary tumor cannot be assessed |
| T0 |
No evidence of primary tumor |
| Tis |
Carcinoma in situ |
Supraglottis
| TNM Classification |
Histological/Clinical Features |
| T1 |
Limited to one sub site, with normal vocal cord mobility |
| T2 |
Invades mucosa of > one adjacent sub site of supraglottis or glottis or region outside the supraglottis; without fixation of larynx |
| T3 |
Limited to larynx with vocal cord fixation and/or or invades postcricoid area, pre-epiglottic tissues, paraglottic space, and/or minor thyroid cartilage erosion. |
| T4a |
Invades through thyroid cartilage and/or tissues beyond larynx |
| T4b |
Invades prevertebral space, encases carotid artery, or invades mediastinal structures |
Glottis
| TNM Classification |
Histological/Clinical Features |
| T1 |
Limited to vocal cord(s), with normal mobility |
| T1a |
Limited to one vocal cord |
| T1b |
Involves both vocal cords |
| T2 |
Extends to supraglottis, and/or subglottis, and/or with impaired cord mobility |
| T3 |
Limited to larynx with vocal cord fixationT4 = Invades thru thyroid cartilage and/or other tissues beyond larynx |
| T4a |
Invades through thyroid cartilage and/or tissues beyond larynx |
| T4b |
Invades prevertebral space, encases carotid artery, or invades mediastinal structures |
Subglottis
| TNM Classification |
Histological/Clinical Features |
| T1 |
Limited to subglottis |
| T2 |
Extends to vocal cord(s) with normal/impaired mobility |
| T3 |
Limited to larynx with vocal cord fixation |
| T4a |
Invades cricoid or thyroid cartilage and/or tissues beyond larynx |
| T4b |
Invades prevertebral space, encases carotid artery, or invades mediastinal structures |
