Safety and Efficacy of CT-guided Percutaneous Cryoablation for Renal Cell Carcinoma

Christos S. Georgiades, Kelvin Hong, Cary Bizzell, Jean Francois Geschwind, Ronald Rodriguez

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


Purpose: Image-guided percutaneous cryoablation is a treatment alternative for selected patients with renal cell carcinoma (RCC). The objective of the present study was to present the safety and efficacy of percutaneous cryoablation. Materials and Methods: The study included 51 lesions in 46 consecutive patients treated with computed tomography (CT)-guided percutaneous cryoablation. Results were based on 40 RCCs with follow-up. Patients had baseline history and physical and laboratory examinations and renal CT or magnetic resonance (MR) imaging and were followed every 3 months. Biopsy of all lesions was performed before or at the time of the procedure. Efficacy was defined as a complete lack of enhancement on follow-up contrast agent-enhanced CT or MR imaging. Lesion size was also followed and correlated with lack of enhancement. Short- and long-term complications were tabulated. Results: The technical success rate was 100%, with 20% of cases requiring some form of thermal protection of an adjacent organ. During follow-up (median, 28 weeks; range, 4-81 weeks), the efficacy rate was 100% for lesions smaller than 7 cm. The incidence of significant complications was 18% (8% CTAE), mostly (10%) intercostal or genitofemoral nerve injury. All patients with complications recovered fully, and there were no mortalities. There was no change in creatinine levels, and no patient developed renal failure as a result of cryoablation. Conclusions: CT-guided percutaneous cryoablation resulted in complete response for lesions as large as 4 cm. It may also be a viable alternative for nonsurgical candidates with lesions as large as 7 cm. It has a high efficacy rate, and its modest complications are not only comparable to those of other treatment modalities, but also appear to be reversible.

Original languageEnglish (US)
Pages (from-to)1302-1310
Number of pages9
JournalJournal of Vascular and Interventional Radiology
Issue number9
StatePublished - Sep 1 2008

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine


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