Percutaenous renal tumor ablation
Citation, DOI, disclosures and article data
At the time the article was created Yuranga Weerakkody had no recorded disclosures.View Yuranga Weerakkody's current disclosures
At the time the article was last revised Travis Fahrenhorst-Jones had no financial relationships to ineligible companies to disclose.View Travis Fahrenhorst-Jones's current disclosures
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.
On this page:
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.
In general, the ablated region frequently decreases in size over time.
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.
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:
T1: iso- to hyperintense
T2: generally hypointense
T1 C+ GAD: post-ablation beds often show a thin rim of peripheral enhancement 5
genitofemoral nerve injury 6 - emerging from the surface of the psoas major muscle, the nerve may be injured when the lesion is too close to the psoas muscle
- 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
- 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