Subsites of Larynx
Larynx is divided into:
- Supraglottis
- Glottis
- Subglottis
Supraglottis
Includes:
- epiglottis
- aryepiglottic folds
- arytenoids
- false cords
Features
- Rich lymphatic drainage
- Early nodal metastasis
Glottis
Corresponds to the true vocal cords.
Includes:
- true cords
- anterior commissure
- posterior commissure
Features
- Sparse lymphatics
- Hoarseness occurs early
- Best prognosis
Subglottis
Extends from lower border of glottis to lower border of cricoid cartilage.
Features
- Rare site for primary carcinoma
- Often presents late
Comparison
| Feature | Supraglottis | Glottis | Subglottis |
|---|---|---|---|
| Lymphatics | Rich | Sparse | Moderate |
| Early symptom | Dysphagia | Hoarseness | Stridor |
| Prognosis | Intermediate | Best | Poor |