Table 1.
Patient and tumor characteristics.
| Total patients with pRCC | 124 | ||
|---|---|---|---|
| Radical nephrectomies | 57 | ||
| Partial nephrectomies | 67 | ||
| Patients with exclusively pRCC | 108 | ||
| Patients with CT available | 84 | ||
| Patient age (mean, range) | 62 | 20 to 94 | |
| Female gender (#, %) | 59 | 70% | |
| Type 1 pRCC (#, %) | 27 | 32% | |
| Type 2 pRCC (#, %) | 17 | 20% | |
| Type unspecified pRCC (#, %) | 40 | 48% | |
| Tumor size (mm, range) | 39.5 | 18 to 170 | |
| Noncontrast HU<10 (#, %) | 3 | 4% | |
| Noncontrast HU<20 (#, %) | 15 | 21% | |
| Noncontrast HU<30 (#, %) | 45 | 62% | |
| Noncontrast HU (mean, SD, range) | 27 | 10 | −6 to 50 |
| 30-s contrast HU (mean, SD, range) | 41 | 17 | 7 to 91 |
| 100-s contrast HU (mean, SD, range) | 46 | 21 | 8 to 97 |
| 10-min contrast HU (mean, SD, range) | 47 | 17 | 20 to 101 |
pRCC, Papillary renal cell carcinoma; CT, computed tomography; HU, Hounsfield units; SD, standard deviation.