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Citation:
Weerakkody Y, Fahrenhorst-Jones T, Baba Y, et al. Percutaenous renal tumor ablation. Reference article, Radiopaedia.org (Accessed on 20 Apr 2024) https://doi.org/10.53347/rID-82597
Percutaneous ablation in the kidney is now performed as a standard therapeutic nephron-sparing option in patients who are poor candidates for resection. It is performed via radiofrequency ablation or cryoablation.
Can vary according to center but usually includes contrast-enhanced CT or MR imaging at approximately 3-, 6-, and 12-months after ablation and at 6–9-month intervals thereafter 2.
In general, the ablated region frequently decreases in size over time.
CT
The use of intravenous contrast material is often essential for the evaluation of possible residual or recurrent tumor. Ablated regions, (regardless of RF ablation) appear as low-attenuation regions without enhancement.
MRI
Local stranding in the perinephric fat adjacent to the ablation site may be present.
The usual signal relative to renal parenchyma of ablated regions are:
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2. Satomi Kawamoto, Sompol Permpongkosol, David A. Bluemke, Elliot K. Fishman, Stephen B. Solomon. Sequential Changes after Radiofrequency Ablation and Cryoablation of Renal Neoplasms: Role of CT and MR Imaging1. (2007) RadioGraphics. 27 (2): 343-55. doi:10.1148/rg.272065119 - Pubmed
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5. Matthew S. Davenport, Elaine M. Caoili, Richard H. Cohan, James H. Ellis, Ellen J. Higgins, Jonathon Willatt, Giovanna A. Fox. MRI and CT Characteristics of Successfully Ablated Renal Masses: Imaging Surveillance After Radiofrequency Ablation. (2012) American Journal of Roentgenology. 192 (6): 1571-8. doi:10.2214/AJR.08.1303 - Pubmed
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6. Lee S, Choyke L, Locklin J, Wood B. Use of Hydrodissection to Prevent Nerve and Muscular Damage During Radiofrequency Ablation of Kidney Tumors. J Vasc Interv Radiol. 2006;17(12):1967-9. doi:10.1097/01.rvi.0000248829.49442.0e - Pubmed
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