Patient and Tumor Characteristics
| Characteristic | Value |
| Age (y) | |
| Mean ± SD | 60 ± 10 |
| Median | 58 |
| Sex | |
| Male | 71 (93) |
| Female | 5 (7) |
| Histology | |
| Squamous cell carcinoma | 40 (53) |
| Adenocarcinoma | 36 (47) |
| T stage | |
| T2 | 9 (12) |
| T3 | 64 (84) |
| T4 | 2 (3) |
| Tx | 1 (1) |
| N stage | |
| N0 | 10 (13) |
| N1 | 60 (79) |
| N2 | 6 (8) |
| UICC stage | |
| II | 19 (25) |
| III | 57 (75) |
Data are n followed by percentage in parentheses, except for age.