Long-term outcomes after percutaneous renal cryoablation performed with adjunctive techniques

Publication date: July–August 2018
Source:Clinical Imaging, Volume 50
Author(s): Faraz Khan, Andrew M. Ho, Joseph E. Jamal, Meyer D. Gershbaum, Aaron E. Katz, Jason C. Hoffmann
ObjectiveTo review the technical success of image-guided percutaneous cryoablation of renal masses in difficult anatomic locations using adjunctive techniques to displace critical structures away from the ablation zone, while also reporting longer-term outcomes within this patient population.MethodsAn IRB approved, retrospective analysis of 92 renal masses treated with percutaneous cryoablation revealed 15 cases utilizing adjunctive techniques. Tumor size and distance to adjacent organ before and after adjunctive technique and long-term outcomes were evaluated.ResultsThe adjunctive techniques used were hydrodissection (n=15) and angioplasty balloon interposition (n=1). Before and after adjunctive technique, median tumor proximity to closest organ was 4mm and 26mm, respectively. All cases had appropriate ablation zones and protection of adjacent critical structures. There is no evidence of recurrence or complication on follow-up (median 51months).ConclusionsAdjunctive techniques to ablate renal masses in difficult locations provide technical success, safety, and favorable long-term outcomes.



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