Effectivity and Safety of Ultrasound-guided Percutaneously Radiofrequency Ablation for Liver Cancer

To evaluate the safety and efficacy of ultrasonography (US) -guided radiofrequency ablation for liver tumors, the investigators used preoperative and postoperative US/CEUS(contrast-enhanced ultrasonography)/CT/MRI to assess lesions, and laboratory tests including the tumor markers to evaluate the general condition of patients. Intraoperative US/CEUS/CT would be applied to monitor ablation lesions.

Inclusion Criteria:

• Patients with small hepatocellular carcinoma (single or multiple nodules of less than 3 cm in diameter), Patients with Child-Pugh A/B, Patients with PLT(platelet count) ≥ 50*10e9/L and PT(prothrombin time) ≤ 20s.

Exclusion Criteria:

• Patients with blood coagulation dysfunction, ChildPugh score≥3, severe cardiopulmonary disease, intolerant anesthesia and upper gastrointestinal bleeding in shock.