Enhanced Radiofrequency Ablation for Recurrent HCC Post-TACE Using Twin Internally Cooled-Perfusion Electrodes

Inclusion Criteria: * Age: 20-85 years Child-Pugh Class A liver function Radiologically confirmed locally recurrent HCC following conventional TACE treatment Recurrent HCC defined as arterially enhancing tumor at the edge of treated tumor Exclusion Criteria: * More than three HCC nodules Tumors with ≥5 mm abutment length to main hepatic veins or first branches of main portal vein HCC nodules ≥3 cm Platelet count ≤50,000/mm³ or INR prolongation ≥50% Extrahepatic metastasis or vascular invasion Child-Pugh class B or C ECOG performance status ≥3 Poor acoustic window or inability to achieve percutaneous access