Cryoablation (N = 9) 

MWA (N = 15) 

All (N = 24) 

Pathologic diagnosis, n (%)

Renal cell carcinoma 

9 (100.0%)

12 (80.0%)

21 (87.5%)

Other 

0

3 (20.0%)

3 (12.5%)

Laterality, n (%)

Left

7 (77.8%)

6 (40.0%)

13 (54.2%)

Right

2 (22.2%)

9 (60.0%)

11 (45.8%)

Tumor enhancement, n (%) 

Yes 

5 (55.6%)

10 (66.7%)

15 (62.5%)

No

2 (22.2%)

2 (13.3%)

4 (16.7%)

Unknown

2 (22.2%)

3 (20.0%)

5 (20.8%)

Tumor size (cm), mean (SD)

2.2 (0.8)

2.8 (1.3)

2.6 (1.2)

Tumor distance from renal sinus (cm), mean (SD)

0.9 (2.1)

1.1 (0.9)

1.0 (1.4)

Tumor distance from skin (cm), mean (SD)

11.0 (5.0)

9.7 (5.0)

10.2 (4.9)

Location, n (%)

Upper pole - anterior

1 (11.1%)

1 (6.7%)

2 (8.3%)

Mid pole - anterior

0

2 (13.3%)

2 (8.3%)

Lower pole - anterior

4 (44.4%)

2 (13.3%)

6 (25.0%)

Upper pole - posterior

1 (11.1%)

3 (20.0%)

4 (16.7%)

Mid pole - posterior

3 (33.3%)

4 (26.7%)

7 (29.2%)

Lower pole - posterior

0

3 (20.0%)

3 (12.5%)

Exophytic, n (%)

4 (44.4%)

14 (93.3%)

18 (75.0%)

Exophytic: > 50%, n (%)

0

10 (71.4%)

10 (55.6%)

Tumor is entirely above polar line, n (%)

3 (33.3%)

4 (26.7%)

7 (29.2%)

Tumor is entirely below polar line, n (%)

1 (11.1%)

4 (26.7%)

5 (20.8%)

Tumor crosses polar line, n (%)

5 (55.6%)

7 (46.7%)

12 (50.0%)

Tumor is > 50% across polar line, n (%)

3 (33.3%)

6 (40.0%)

9 (37.5%) 

Tumor crosses axial renal midline, n (%)

2 (22.2%)

6 (40.0%) 

8 (33.3%)

Tumor is entirely between polar lines, n (%)

0

0

0