Background: Percutaneous cryoablation is an evolving method of renal tumor treatment, particularly in those patients who are poor surgical candidates.

Methods: We performed a retrospective review of tumors treated with percutaneous cryoablation using CT monitoring. Tumor size, biopsy result, technical success, complications, and results of follow-up imaging were recorded.

Results: 84 tumors in 83 patients have been treated with percutaneous cryoablation during 83 ablation procedures. Mean tumor size was 3.4cm. 60% of tumors were shown to represent RCC. Technical success was achieved in 81 of the 84 tumors ( 96%). There were 2 significant complications (2/83 ablations; 2%). Of the 55 tumors with follow-up imaging available (mean 11 months), there has been no recurrence.

Conclusions: Percutaneous cryoablation appears to be an effective method of renal tumor treatment. Given the lack of long-term follow-up, patient selection is important.