Radiofrequency Ablation for Hepatocellular Carcinoma Using Octopus MP Electrodes

This study is to investigate the therapeutic effect and treatment results of radiofrequency ablation using the Octopus MP electrode capable of temperature monitoring and drug injection and a variable-length electrode for treatment of small hepatocellular carcinomas (≤ 3cm).

Inclusion Criteria:Child-Pugh Class A or Bchronic hepatitis B or chronic hepatitis C or liver cirrhosispresence of hepatocellular carcinoma (HCC) after confirmed by pathology or imaging studies including contrast enhanced computed tomography (CT) or magnetic resonance imaging (MRI) according to the Korean Liver Cancer Study Group (KLCSG)-National Cancer Center (NCC) Korea practice guidelines.up to 3 lesions, each greater than less than or equal to 3 cm at the time of locoregional treatment.Exclusion Criteria:number of recurrent HCCs, more than 3largest HCC size over 3 cmpresence of vascular invasion by HCCplatelet count less than 40,000 per mm3 or International Normalized Ratio (INR) prolongation over 50%presence of extrahepatic metastasis