TABLE 4.
Patterns of locoregional failures following definitive radiotherapy for early-stage glottic carcinoma.
| IMRT | Conventional | |
|---|---|---|
| Patients with LRR | 5 | 36 |
| Site of first failure | ||
| True vocal cord (isolated) | 5 (1) | 31 (17) |
| Ipsilateral cord only | 5 | 17 |
| Bilateral cords | 0 | 14 |
| Contralateral cord only | 0 | 0 |
| Supraglottic extension (isolated) | 3 (0) | 10 (1) |
| Subglottic extension (isolated) | 4 (0) | 10 (0) |
| Hypopharynx | 0 | 1 |
| Cervical lymph node (isolated) | 2 (0) | 4 (3) |
Abbreviation: IMRT, intensity-modulated radiotherapy; LRR, locoregional recurrence.