Citation, DOI & article data
Citation:
Weerakkody, Y., Luong, D. Percutaenous renal tumor ablation. Reference article, Radiopaedia.org. (accessed on 05 Jul 2022) 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.
Follow-up time frame
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.
Postoperative imaging
In general, ablated region frequently decreases in size over time.
CT
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.
Usual signal relative to renal parenchyma of ablated regions are:
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T1: iso- to hyperintense
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T2: generally hypointense
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T1 C+ GAD: post-ablation beds often show a thin rim of peripheral enhancement 5
- 1. Aradhana M. Venkatesan, Bradford J. Wood, Debra A. Gervais. Percutaneous Ablation in the Kidney. (2011) Radiology. 261 (2): 375-91. doi:10.1148/radiol.11091207 - Pubmed
- 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
- 3. Geoffrey E. Wile, John R. Leyendecker, Kyle A. Krehbiel, Raymond B. Dyer, Ronald J. Zagoria. CT and MR Imaging after Imaging-guided Thermal Ablation of Renal Neoplasms1. (2007) RadioGraphics. 27 (2): 325-39; discussion 339-40. doi:10.1148/rg.272065083 - Pubmed
- 4. Maria Franca Meloni, Michele Bertolotto, Chiara Alberzoni, Sergio Lazzaroni, Carlo Filice, Tito Livraghi, Giovanna Ferraioli. Follow-Up After Percutaneous Radiofrequency Ablation of Renal Cell Carcinoma: Contrast-Enhanced Sonography Versus Contrast-Enhanced CT or MRI. (2012) American Journal of Roentgenology. 191 (4): 1233-8. doi:10.2214/AJR.07.3238 - Pubmed
- 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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