Table 1.
Comparison of features and technical outcomes between tumors treated with RFA and CA.
| RFA | Cryoablation | p | |
|---|---|---|---|
| Number of tumors | 43 | 47 | |
| Number of patients | 38 | 44 | |
| Mean age at treatment (years) | 69.5 | 69.8 | 0.91 |
| Male patients no. (%) | 27 (71) | 32 (72) | 0.86 |
| Prior RCC treatment n° (%) | 12 (32) | 8 (18) | |
| Single treatment session (%) | 100 | 100 | |
| Mean tumor size (cm) | 2.3 ± 0.9 | 2.1 ± 0.8 | 0.33 |
| Centrally located tumors n° (%) | 12 (28) | 26 (55) | 0.008 |
| Mean follow-up (months) | 29 | 25 | 0.40 |
| T1b tumors n° (%) | 6/43 (13.9) | 4/47 (8.5) | 0.41 |
| Technical failure rate n° (%) | 3/43 (6.9) | 1/47 (2.1) | 0.30 |
| Local tumor recurrence rate n° (%) | 1/40 (2.5) | 5/46 (10.8) | 0.12 |
| Major complications rate n° (%) | 1/43 (2.3) | 0/47 (0) | 0.93 |
| Peri-renal hematoma rate n° (%) | 2 (4.6) | 11 (23.4) | 0.01 |