Table 1.
Clinicopathological characteristics of the patients
| Characteristic | Patients (n = 110) |
|---|---|
| Age (years) | |
| Average | 64.3 |
| Median | 67 |
| Range | 21–92 |
| >60 | 78 |
| ≦60 | 32 |
| Sex | |
| Male | 61 |
| Female | 49 |
| ECOG PS | |
| ≦1 | 100 |
| ≧2 | 10 |
| Follow-up months | |
| Average | 67.2 |
| Median | 56.6 |
| Range | 1–236 |
| Tumor location | |
| Tongue | 65 |
| Maxilla | 7 |
| Mandible | 9 |
| Buccal | 10 |
| Floor of mouth | 18 |
| Hard palate | 1 |
| Tumor size (cm) | |
| Average | 2 |
| Median | 2 |
| Range | 0.2–3.8 |
| T stage | |
| T1 | 59 |
| T2 | 51 |
| Tumor differentiation | |
| Well | 68 |
| Moderately | 30 |
| Poorly | 12 |
| Mode of invasion | |
| 1 | 16 |
| 2 | 28 |
| 3 | 54 |
| 4C | 9 |
| 4D | 3 |
| Vascular invasion | |
| v(−) | 101 |
| v(+) | 9 |
| Lymphatic vessel invasion | |
| ly(−) | 92 |
| ly(+) | 18 |
| Perineural involvement | |
| ne(−) | 107 |
| ne(+) | 3 |
ECOG PS Eastern Cooperative Oncology Group performance status, v vascular invasion, ly lymphatic vessel invasion, ne perineural involvement