Table 1 Patient characteristics
| Â | No. of patients | % |
|---|---|---|
Total number of patients | 59 | Â |
Age | Â | Â |
   Median(Range) | 59.11(36-85) |  |
Depth of tumor invasion | Â | Â |
   pT1 | 7 | 11.9 |
   pT2 | 15 | 25.4 |
   pT3 | 14 | 23.7 |
   pT4 | 23 | 38.9 |
LN metastasis | Â | Â |
   N0 | 5 | 8.6 |
   N1 | 17 | 28.8 |
   N2 | 21 | 35.6 |
   N3 | 16 | 27.1 |
Distant metastasis | Â | Â |
   Metastasis(-) | 51 | 86.4 |
   Metastasis(+) | 8 | 13.6 |