PMC7373648_01
Axial CT image shows an intraparenchymal mid-renal hypervascular nodule referred to RCC (arrows).
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A 68-year-old-male patient with a history of right nephrectomy was treated 3 months before by microwave ablation for RCC of the left kidney (Figure 1).
Axial CT image shows the hypervascular nodule (arrows), centrally located, on the inner margin of the previous ablation area (head of arrow).
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Multi-detector computed tomography (MD-CT) showed the presence of a 15 mm hypervascular nodule, centrally located, on the inner margin of the previous ablation area (Figure 2).
Angio-CT Hybrid Suite with the availability of angiography, CT and US.
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The procedure was performed under general anaesthesia in our Angio-CT Hybrid Suite with the availability of angiography, CT and US (Figure 3).
Retrograde pyelography shows the right positioning of the left ureteral stent in the omolateral collecting system.
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First a 6 French stent (Pollack Open-End Flexi-Tip  Ureteral Catheter, Cook Urological) was placed into the ipsilateral renal pelvis (Figure 4).
Fusion imaging combining real time US with CT images: CT scan shows the hypervascular nodule deeply in the scar of the previous treatment (arrow); the lesion is not clearly visible at US (heads of arrow).
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Fusion imaging was used to guide the needle to target the residual tumour combining real-time US scans with CT images (Figure 5).
Axial CT image shows the hypo-enhancing ablation zone without enhancing residual tumor (arrow).
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Follow-up CT scan performed at 6 weeks showed complete tumour ablation without enhancing residual tumour (Figure 6).