Table 1 Patient (n = 30) and tumor (n = 32) characteristics
No (%), mean ± standard deviation (SD) or median (range) | |
|---|---|
Age (years) | 69 (38–83) |
Sex | |
Male | 20 (66.6) |
Female | 10 (33.4) |
ASA classification | |
II | 17 (56.6) |
III | 13 (43.4) |
Maximal tumor diameter (mm) | 31.3 ± 9.4 |
Tumor side | |
Left | 16 (50.0) |
Right | 16 (50.0) |
Tumor location | |
Upper pole | 7 (21.9) |
Interpolar | 11 (34.4) |
Lower pole | 14 (43.7) |
Tumor site | |
Anterior | 13 (40.6) |
Posterior | 19 (59.4) |
Histologic subtype | |
Clear-cell RCC | 14 (43.7) |
Papillary RCC | 3 (9.4) |
Chromophobe RCC | 2 (6.3) |
Oncocytoma or mixed oncocytoma/chromophobe RCC | 1 (3.1) |
Inconclusive biopsy | 7 (21.9) |
No histopathology | 5 (15.6) |
Prior cryoablation | |
First ablation | 31 (96.9) |
Re-ablation | 1 (3.1) |
RENAL score | |
4–6 (low) | 20 (62.5) |
7–9 (moderate) | 11 (34.4) |
10–12 (high) | 1 (3.1) |