Fig. 3
From: Long-term follow-up of CT-guided percutaneous radiofrequency ablation of T1 renal cell carcinoma
a Pre- and post-contrast series before (upper set) and after (lower set) first session RFA reveals persistent enhancement after the RFA denoting residual viable tumor tissue due to hypervascularity. b same patient, Angiography series (upper set) reveals mild tumor blush before embolization for which super-selective embolization of a middle arterial feeder … Lower set images show procedure during second RFA session after embolization. c Same patient, pre- and post-contrast series at one-month (upper set) set and at 6-month (lower set) follow-up show absence of any enhancement at different phases of contrast-enhanced studies, note also marked size reduction at the 6-month CT study