Contrast-enhanced ultrasound in renal tumor radiofrequency ablation assessment

Clinical case of follow up after radiofrequency ablation of tumor in solitary kidney by contrast-enhanced ultrasound is presented. A metachronous multiple primary cancer was diagnosed in patient N., 49 years old. A right radical nephrectomy (right kidney cancer, pT2N0M0, stage II) was performed in 2010, and a radiofrequency ablation of tumor in solitary left kidney (left kidney cancer, cT1N0M0, stage I) - in June 2016. The contrast-enhanced ultrasound control examination, performed in September 2016 (in 3 months after radiofrequency ablation), demonstrated nonenhancing ablation area during the arterial and venous phases. The contrast-enhanced ultrasound findings confirmed by contrast-enhanced computed tomography in December 2016 (in 6 months after radiofrequency ablation). The presented clinical case demonstrates the contrast-enhanced ultrasound value in the assessment of radiofrequency ablation of renal tumors.

contrast-enhanced ultrasound (CEUS), radiofrequency ablation, renal tumor, residual tumor, multiple primary cancers, metachronous cancer

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