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| Total number | 42 | |
| Median age (range) (years) | 69 | (41–91) |
| Sex | ||
| Male | 30 | 71% |
| Female | 12 | 29% |
| Laterality | ||
| Right | 20 | 48% |
| Left | 21 | 50% |
| Bilateral | 1 | 2% |
| Histology | ||
| Clear cell RCC | 42 | 100% |
| Tumor grade | ||
| G1 | 5 | 12% |
| G2 | 29 | 69% |
| G3 | 7 | 2% |
| Unknown | 1 | 2% |
| Pathological tumor stage | ||
| pT1 | 34 | 81% |
| pT2 | 1 | 2% |
| pT3 | 6 | 14% |
| Unknown | 1 | 2% |
| Metastasis | ||
| M 0 | 37 | 88% |
| M 1 | 5 | 12% |
| Venous invasion | ||
| v 0 | 26 | 62% |
| v 1 | 15 | 36% |
| Unknown | 1 | 2% |
| Recurrence | ||
| Recurrence + | 3 | 7% |
| Recurrence – | 26 | 62% |
| Unknown | 13 | 31% |
