Table 1.
Study cohort
| Parameters | OCC | MC | SGT | Total |
|---|---|---|---|---|
| Patients ( N ) | 202 | 441 | 72 | 715 |
| Gender (% males) | 75 % | |||
| Mean age (range) | 62 (39–91) | |||
| Mean FU (range), months | 38 (7–143) | |||
| Histology | ||||
| Squamous cell carcinoma | 197 | 428 | 21 | 646 |
| Adenocarcinoma | 0 | 3 | 19 | 22 |
| Adenoid cystic carcinoma | 1 | 0 | 15 | 16 |
| Others | 4 | 10 | 17 | 31 |
| IMRT | ||||
| Postoperative | 145 | 97 | 69 | 311 |
| Definitive | 57 | 344 | 3 | 404 |
| T stage | ||||
| T1 | 28 | 73 | 11 | 112 |
| T2 | 59 | 150 | 15 | 224 |
| T3 | 23 | 97 | 25 | 145 |
| T4 | 65 | 112 | 19 | 196 |
| Recurrence | 27 | 9 | 2 | 38 |
| N stage | ||||
| N0 | 72 | 75 | 29 | 176 |
| N1-2b | 86 | 232 | 38 | 270 |
| N2c | 31 | 107 | 4 | 142 |
| N3 | 2 | 22 | 0 | 24 |
| Recurrence | 11 | 5 | 1 | 17 |
| 5-Year disease control (postoperative/definitive) | ||||
| Local | 75 %/40 % | 96 %/77 % | 95 %/50 % | |
| Disease-free survival | 62 %/36 % | 80 %/61 % | 73 %/0 % | |
| Overall survival | 71 %/27 % | 86 %/73 % | 88 %/75 % | |
FU follow-up, OCC oral cavity cancer, MC mesopharyngeal cancer, SGT salivary gland tumor.