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| Characteristic | N (%) |
| Age | |
| Mean ± SEM (years) | 55 ± 13 |
| Gender | |
| Male/female | 35/15 |
| Tumor size | |
| Mean ± SEM (cm) | 5.2 ± 2.8 |
| Location of cancer | |
| Right/left | 28/22 |
| T stage | |
| pT1a | 16 (32) |
| pT1b | 15 (30) |
| pT2a | 8 (16) |
| pT2b | 4 (8) |
| pT3 | 4 (8) |
| pT4 | 3 (6) |
| N stage | |
| N0 | 46 (92) |
| N1 | 4(8) |
| M stage | |
| M0 | 48 (96) |
| M1 | 2 (4) |
| Fuhrman grade | |
| 1 | 23 (46) |
| 2 | 20 (40) |
| 3 | 5 (10) |
| 4 | 2 (4) |
