Table 2. Growth rate for ccRCCs: overall and correlation with clinicopathologic variables.
| Growth rate of sporadic ccRCCs, n=61 (cm/year) | Growth rate of ccRCCs in VHL, n=30 (cm/year) | |
|---|---|---|
| Growth rate | ||
| Median | 0.61 | 0.43 |
| Range | 0.00–4.74 | 0.04–1.89 |
| Mean ± SD | 0.91±1.03 | 0.47±0.31 |
| P value | 0.07 | |
| Growth rates and clinicopathologic variables | ||
| Pathological Grade | ||
| Grade 1 | 0.35±0.22 (n=14) | 0.35±0.06 (n=6) |
| Grade 2 | 0.74±0.68 (n=36) | 0.50±0.35 (n=23) |
| Grade 3 | 2.17±1.56 (n=11) | 0.54 (n=1) |
| P value | <0.001 | 0.316 |
| Initial size | ||
| R2 | 0.016 | 0.627 |
| P value | 0.325 | <0.001 |
| Age | ||
| R2 | 0.0005 | 0.076 |
| P value | 0.862 | 0.142 |
| Sex | ||
| Men | 0.88±1.05 | 0.40±0.14 |
| Women | 1.00±1.02 | 0.63±0.51 |
| P value | 0.383 | 0.197 |
ccRCC, clear cell renal cell carcinoma; VHL, von Hippel-Lindau disease.