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MRI- Versus CT-Guided Renal Tumor Cryoablation: Is There a Difference?
Roberto Luigi Cazzato1, Pierre De Marini2, Theo Mayer2
1Service d'Imagerie Interventionnelle, Hôpitaux Universitaires de Strasbourg, 1, Place de L'hôpital, 67000, Strasbourg, France. gigicazzato@hotmail.com.
Cardiovascular and Interventional Radiology
|May 24, 2023
Summary
Magnetic resonance imaging (MRI)-guided cryoablation (CA) for renal tumors takes longer than computed tomography (CT)-guided CA. However, both methods show comparable safety, renal function preservation, and oncologic outcomes.
Area of Science:
- Urology
- Oncology
- Radiology
Background:
- Percutaneous cryoablation (CA) is a minimally invasive treatment for renal tumors.
- Guidance modalities, such as MRI and CT, may influence procedure outcomes.
Purpose of the Study:
- To compare procedure-related variables, safety, renal function, and oncologic outcomes between MRI-guided and CT-guided percutaneous CA of renal tumors.
Main Methods:
- Retrospective analysis of patient, tumor, and procedure data.
- Coarsened exact matching to create comparable MRI and CT groups.
- Statistical analysis to compare complication rates, GFR decline, and survival outcomes.
Main Results:
- MRI-guided CA procedures were longer than CT-guided CA (P=0.005).
- Complication rates (6.5% vs 14.3%, P=0.30) and GFR decline (mean -13.1% vs -8.1%, P=0.13) were similar between groups.
- 5-year oncologic outcomes, including local progression-free survival (94.0% vs 90.8%, P=0.55), were comparable.
Conclusions:
- MRI-guided CA for renal tumors is a safe and effective alternative to CT-guided CA.
- While procedure times are longer with MRI guidance, safety and oncologic efficacy are similar.
- Both imaging modalities provide comparable renal function preservation and long-term cancer control.
