Cryoablation Shows Potential as Alternative to Partial Nephrectomy

Image-guided cryoablation is much less invasive than partial nephrectomy and only requires the insertion of one or several needles into the tumor, and the subsequent freezing of the tumor.

The study included 285 patients with solitary renal cell carcinomas who were treated with percutaneous image-guided cryoablation. Tumors were ablated using between one and seven cryoprobes, and image guidance was provided using Computed Tomography (CT) or Magnetic Resonance Imaging (MRI) scans.

The results showed a success rate (no tumor recurrence) of 97.8% for the cryoablation treatments. The overall success rate was 99% if patients underwent a second ablation because of disease recurrence. The overall survival rates after five years and 10 years were 90% and 79% respectively. The disease-specific survival rate was 98%, and 10-year cancer-free survival was 94%.

Co-author of the study, Kemal Tuncali, MD, from the BWH, said, "A number of studies have been published looking at image-guided ablation or radio frequency ablation of kidney tumors, but all have been relatively small series. The advantage of our study is that it included a larger patient population and included intermediate and long-term follow ups."

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