Table 3 –
Pathologic characteristics of patients who received a partial nephrectomy for 4–7 cm renal cortical tumors
| OPN | MIPN | P | |||
|---|---|---|---|---|---|
| n = 226 | % | n = 54 | % | ||
| Histology | |||||
| Clear cell | 125 | 55 | 34 | 63 | 0.5 |
| Papillary | 39 | 17 | 7 | 13 | - |
| Chromophobe | 31 | 14 | 8 | 14 | - |
| Unclassified | 8 | 4 | 1 | 2 | - |
| AML | 2 | 1 | 0 | - | - |
| Oncocytoma | 18 | 8 | 1 | 2 | - |
| Other | 3 | 1 | 3 | 6 | - |
| Tumor size, cm, median (IQR) | 5.0 (4.5–5.5) | - | 5.2 (4.5–5.9) | - | 0.4 |
| Positive margin | 11 | 5 | 2 | 4 | 0.5 |
| Stage | |||||
| pT1b | 183 | - | 47 | - | 0.4 |
| pT3a | 41 | - | 7 | - | - |
OPN = open partial nephrectomy; MIPN = minimally invasive partial nephrectomy; AML = angiomyolipoma; IQR = interquartile range.