Table IV.
Survival rates.
| DFS rate (%)
|
OS rate (%)
|
P-value
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Cases | Frequency (n/total, %) | 2-year | 5-year | 2-year | 5-year | Recurrence rate (%) | Metastasis rate (%) | Mortality rate (%) | DFS | OS |
| Available total | 50, 100 | 66.2 | 51.3 | 88.6 | 88.6 | 40 | 16 | 10 | - | - |
| Surgery alone | 23/50, 46 | 67.4 | 56.2 | 84.7 | 84.7 | 34.8 | 0 | 8.7 | 0.5513 | 0.7193 |
| Surgery + RT/ChT | 26/50, 52 | 73.8 | 66.4 | 91.4 | 91.4 | 46.2 | 30.8 | 7.7 | ||
| Size <4 cm | 23/35, 66 | 81.5 | - | 100 | - | 17.4 | 0 | 0 | 0.0446 | 0.0086 |
| Size ≤4 cm | 12/35, 34 | 36.8 | 36.8 | 59.7 | 59.7 | 58.3 | 8.3 | 33.3 | ||
| Tonsil | 27/52, 52 | 95.8 | 66.4 | 95.3 | 88.6 | 30.8 | 15.4 | 3.9 | - | - |
| Parapharyngeal space | 10/52, 19 | 40.0 | 40.0 | 95.3 | 88.6 | 80 | 20 | 30 | - | - |
| Nasopharynx | 8/52, 15 | 71.4 | 71.4 | 95.3 | 88.6 | 37.5 | 12.5 | 12.5 | - | - |
| Palate | 4/52, 8 | 100 | 100 | 95.3 | 88.6 | 0 | 0 | 0 | - | - |
| Pharynx | 2/52, 4 | 50.0 | 50.0 | 95.3 | 88.6 | 50 | 50 | 0 | - | - |
RT, radiotherapy; ChT, chemotherapy; -, not available; LR, local recurrence; DM, distant metastasis; DFS, disease free survival; OS, overall survival.