Table 6.
The prognostic factors for overall survival (OS) for the patients with postradiation nasopharyngeal necrosis with negative pathology at the time of surgery
| Clinical characteristic | 2-year OS rate (%) | P-value |
|---|---|---|
| Gender | ||
| Female | 100 | |
| Male | 84.9 | 0.613 |
| Age (years) | ||
| < 51 | 96 | |
| ≥ 51 | 81.6 | 0.295 |
| Cycles of radiotherapy | ||
| One | 86.5 | |
| Two | 93.3 | 1.000 |
| Necrosis-free interval | ||
| Acute necrosis | 91.7 | |
| Chronic necrosis | 87.7 | 0.443 |
| Carotid artery exposure | ||
| Yes | 75 | |
| No | 96.8 | 0.219 |
| Osteoradionecrosis | ||
| Yes | 93.9 | |
| No | 73.8 | 0.374 |
| Status of the NSFF flap | ||
| Survived | 90.1 | |
| Necrotized | 81.8 | 0.043 |
| All patients | 88.4 | |
NSFF posterior pedicle nasal septum, and floor mucoperiosteum flap