Table 2 Subgroup analysis of treatment outcome after stereotactic radiosurgery or radiotherapy for local failures of nasopharyngeal carcinoma
3-year local failure-free rate | 3-year overall survival rate | |||||
|---|---|---|---|---|---|---|
SRS | SRM | p value | SRS | SRM | p value | |
Sex | ||||||
male | 54% | 87% | 0.006 | 63% | 63% | 0.806 |
female | 42% | 73% | 0.275 | 75% | 24% | 0.067 |
Age | ||||||
≤ 45 | 27% | 87% | 0.023 | 63% | 44% | 0.338 |
> 45 | 49% | 80% | 0.028 | 67% | 62% | 0.702 |
Type of failure | ||||||
persistent disease | 77% | 94% | 0.456 | 87% | 90% | 0.589 |
recurrent disease | 30% | 75% | 0.001 | 52% | 35% | 0.419 |
rT stage | ||||||
rT1 | 69% | 88% | 0.133 | 85% | 79% | 0.721 |
rT2-4 | 28% | 78% | 0.006 | 45% | 28% | 0.458 |
Tumor volume | ||||||
≤ 5 cc | 62% | 90% | 0.219 | 79% | 75% | 0.502 |
> 5 – 10 cc | 61% | 67% | 0.342 | 78% | 44% | 0.117 |
> 10 cc | 69% | 84% | 0.106 | 25% | 52% | 0.108 |