Patients and tumour characteristics
| Total (n = 73) | n |
|---|---|
| Mean age, years (range) | 57 (37–74) |
| <57 | 37 |
| >57 | 36 |
| Gender | |
| Male | 62 |
| Female | 11 |
| Primary tumour | |
| T1/T2 | 19 |
| T3/T4 | 54 |
| Regional lymph node | |
| No | 36 |
| N1 | 37 |
| Distant metastasis | |
| M0 | 69 |
| M1 | 4 |
| Stage | |
| I/IIA/IIB | 33 |
| III/IV | 40 |
| Histopathology | |
| Well differentiated (G1) | 14 |
| Moderately differentiated (G2) | 46 |
| Poorly differentiated (G3) | 13 |