Table 2. Demographic and clinical characteristics of the study population.
| Characteristic | ccRCC with MVI | ccRCC without MVI |
|---|---|---|
| Mean age# (y) | 44.3±11.2 | 47.8±13.8 |
| Gender | ||
| Male | 12 | 33 |
| Female | 10 | 25 |
| Lesion location | ||
| Left | 14 | 30 |
| Right | 8 | 28 |
| Tumor size*, cm | 4.3±2.6 | 3.6±2.1 |
| ISUP/WHO grade group | ||
| Grade group 1 | 2 | 5 |
| Grade group 2 | 4 | 13 |
| Grade group 3 | 10 | 25 |
| Grade group 4 | 6 | 15 |
| Tissue acquisition method | ||
| Radical nephrectomy | 22 | 58 |
| Partial nephrectomy | 0 | 0 |
Mean age# and tumor size* are described as average value ± standard deviation. ccRCC, clear cell renal carcinoma; MVI, microvascular invasion; ISUP, International Society of Urologic Pathology; WHO, World Health Organization.