In the past, the investigators often treated giant cavernous hemangiomas of the liver by hepatectomy.Recently RFA and laparoscopic hepatectomy are also available and could be applied to cure this disease.But we can't get a clear answer about their effectiveness and safety. Hence the investigators conduct this study to explore the effectiveness and efficiency of the these two methods and compare their short to mid-term outcomes.

Inclusion Criteria:

• giant cavernous hemangiomas with a diameter larger than or equal to 5 cm diagnosed by more than one imaging modalities
• age between 18 years to 65 years
• without gender restriction
• PLT account more than 50 e9
• without abnormal of liver function test
• with substantial evidence of growing size than before
• symptom associated cavernous hemangiomas
• with a strong desire of the patients for the treatment

Exclusion Criteria:

• pregnant women
• abnormal of liver function or coagulation dysfunction and/or concurrent with sever cardiac or pulmonary disorders
• patient with a poor condition that can't bear the approach of either RFA or laparoscopic hepatectomy
• tumor size more than 20cm