Table 1.

Partial Nephrectomy versus Ablation: Clinical, Surgical, and Pathologic Outcomes

Variable	Ablation	Partial nephrectomy	P value
# patients	98	100
# procedures	105	100	–
Mean age (years) (range)	64 (38–86)	64 (35–92)	0.85
Mean tumor size (cm) (range)	2.5(1–4.4)	3.9 (1–10)	<0.001
Mean preoperative creatinine (mg/dL)	1.4	1.4	0.65
Side: # (%)
Left	48 (46)	42 (42)	0.39
Right	50 (48)	56 (56)
Unknown	7 (6)	–
Mean operative time (min)(range)	155 (69–300)	169 (68–270)	0.10
Median EBL (mL)(range)	50 (5–400)	400 (25–3900)	<0.001
Pathology: # (%)
Clear–cell	51 (49)	70 (70)
Papillary	5 (4.7)	18 (18)
Chromophobe	–	6 (6)
Oncocytoma	13 (12)	3 (3)	–
AML	6 (5.7)	3 (3)
Nondiagnostic	8 (7.6)	–
No biopsy	22 (21)	–
Mean length of stay (days)(range)	1.7 (1–8)	4.1 (1–21)	<0.001
# Intraoperative complications (%)	1 (1)	6 (6)	0.16
# Postoperative complications (%)	9 (8.6)	18 (18)	0.05
Mean follow-up (months)	31	24	0.04
# Tumor persistence	3 (2.9)	0	0.25
# Local recurrences (%)	7 (6.7)	3 (3)	0.04
# Metastasis	2 (1.9)	1 (1)	0.33
# Deaths (%)	0 (0)	1 (1)	0.50

EBL=estimated blood loss; AML=acute myeloid leukemia.