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| Characteristics | n (%) |
| ECOG, Eastern Cooperative Oncology Group; AJCC, American Joint Committee on Cancer. | |
| Sex | |
| Male | 35 (58) |
| Female | 25 (42) |
| Age (year) | |
| Median age | 50 (22−66) |
| Average age | 49 |
| ECOG | 0−1 |
| Clinical stage (AJCC 7th) | |
| III | 30 (50) |
| IV | 30 (50) |
| T | |
| 1 | 0 (0) |
| 2 | 11 (18) |
| 3 | 27 (45) |
| 4 | 22 (37) |
| N | |
| 0 | 2 (3) |
| 1 | 13 (22) |
| 2 | 37 (62) |
| 3 | 8 (13) |
