Patient and Tumor Characteristics
| Tumor localization | n | % |
| Oral cavity | 2 | 4.1 |
| Oropharynx | 19 | 38.8 |
| Hypopharynx | 12 | 24.5 |
| Larynx | 7 | 14.3 |
| Multilevel | 9 | 18.4 |
| T stage | ||
| T1 | 1 | 2.0 |
| T2 | 4 | 8.2 |
| T3 | 14 | 28.6 |
| T4 | 30 | 61.2 |
| N stage | ||
| N0 | 4 | 8.2 |
| N1 | 1 | 2.0 |
| N2a | 0 | 0.0 |
| N2b | 9 | 18.4 |
| N2c | 35 | 71.4 |
| Human papillomavirus | ||
| Positive | 9 | 18.4 |
| Negative | 40 | 81.6 |