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Percutaneous Cryoablation versus Robot-Assisted Partial Nephrectomy of Renal T1A Tumors: a Single-Center Retrospective Cost-Effectiveness Analysis

  • Clinical Investigation
  • Interventional Oncology
  • Published:
CardioVascular and Interventional Radiology Aims and scope Submit manuscript

Abstract

Purpose

To evaluate the cost-effectiveness of percutaneous cryoablation (PCA) versus robot-assisted partial nephrectomy (RPN) in patients with small renal tumors (T1a stage), considering perioperative complications.

Materials and Methods

Retrospective study from November 2008 to April 2017 of 122 patients with a T1a renal mass who after being analyzed by a multidisciplinary board underwent to PCA (59 patients) or RPN (63 patients). Hospital costs in US dollars, and clinical and tumor data were compared. Non-complicated intervention was considered as an effective outcome. A hypothetical model of possible complications based on Clavien–Dindo classification (CDC) was built, grouping them into mild (CDC I and II) and severe (CDC III and IV). A decision tree model was structured from complications of published data.

Results

Patients who underwent PCA were older (62.5 vs. 52.8 years old, p < 0.001), presented with more coronary disease and previous renal cancer (25.4% vs. 10.1%, p = 0.023 and 38% vs. 7.2%,  p < 0.001, respectively). Patients treated with PCA had a higher preoperative risk (American Society of Anesthesiologists—ASA ≥ 3) than those in the RPN group (25.4% vs. 0%, p < 0.001). Average operative time was significantly lower with PCA than RPN (99.92 ± 29.05 min vs. 129.28 ± 54.85 min, p < 0.001). Average hospitalization time for PCA was 2.2 ± 2.95 days, significantly lower than RPN (mean 3.03 ± 1.49 days, p = 0.04). The average total cost of PCA was significantly lower than RPN (US$12,435 ± 6,176 vs. US$19,399 ± 6,047, p < 0.001). The incremental effectiveness was 5% higher comparing PCA with RPN, resulting a cost-saving result in favor of PCA.

Conclusion

PCA was the dominant strategy (less costly and more effective) compared to RPN, considering occurrence of perioperative complications.

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Acknowledgements

We thank Dr. Eliezer Silva for his useful insights to the economic model, Mr. Rogério Ruscitto do Prado for assistance with statistical analysis and Ms. Fernanda Marques Abatepaulo for help with data collection and imaging analysis.

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This study was not supported by any funding.

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Correspondence to Priscila Mina Falsarella.

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This study has obtained IRB approval from Hospital Israelita Albert Einstein Ethical Committee, and the need for informed consent was waived.

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Garcia, R.G., Katz, M., Falsarella, P.M. et al. Percutaneous Cryoablation versus Robot-Assisted Partial Nephrectomy of Renal T1A Tumors: a Single-Center Retrospective Cost-Effectiveness Analysis. Cardiovasc Intervent Radiol 44, 892–900 (2021). https://doi.org/10.1007/s00270-020-02732-x

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  • DOI: https://doi.org/10.1007/s00270-020-02732-x

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