Study to Evaluate the Safety and Effectiveness of Microwave Ablation in Patients With Hepatocellular Carcinoma in Korea

Inclusion Criteria:

1. Confirmed hepatocellular carcinoma, tumor size of more than 2 cm and up to 5cm, single location, Barcelona Clinic Liver Cancer (BCLC) Stage A based on imaging and biopsy confirmation
2. Primary hepatocellular carcinoma or recurrent hepatocellular carcinoma which was previously treated with ablation or surgical resection only;
3. Scheduled for microwave ablation of the liver;
4. Performance status 0-1 (Eastern Cooperative Oncology Group classification);
5. Functional hepatic reserve based on the Child-Pugh score (Class A or B);
6. American Society of Anesthesiologists (ASA) score \< 3;
7. Given voluntary, written informed consent to participate in this study and has authorized the transfer of his/her information to the Sponsor, and willing to comply with study-related evaluation and treatment schedule;
8. At least 19 years of age

Exclusion Criteria:

1. Active bacterial infection or fungal infection;
2. Systemic administration of steroids, including herbal supplements that contain steroids, within 30 days prior to the study procedure;
3. Chemotherapy or radiation therapy for hepatocellular carcinoma may not be performed for 30 days prior to the study procedure;
4. Subject with implantable pacemakers or other electronic implants;
5. Planned/ scheduled liver surgery.
6. Subject with a platelet count of less than 20,000/mm3;
7. Subject with an INR greater than 1.5;
8. Subject with renal failure on renal dialysis;
9. Scheduled concurrent procedure other than microwave ablation in the liver;
10. Pregnant or lactating;
11. Physical or psychological condition which would impair study participation;
12. Participation in any other clinical study concurrently or within the last 3 months;
13. The subject is judged unsuitable for study participation by the Investigator for any other reason;
14. Unable or unwilling to attend follow-up visits and examinations.