Case 378: Radiofrequency Ablation (RFA)
65 year-old man with history of colorectal carcinoma metastasis in the right hepatic lobe. Surveillance 12 months following radiofrequency ablation performed in another institution.
CT: Local tumor recurrence of hypervascular metastasis with washout
Portal venous phase CT demonstrates avascular ablation zone with enhancing local residual/recurrent tumor portions at the posterior rim of the ablation zone, confirmed by tracer avidity on FDG-PET (arrows).