Shimizu T, Sakuhara Y, Abo D, Hasegawa Y, Kodama Y, Endo H, Shirato H, Miyasaka K. Outcome of MR-guided percutaneous cryoablation for hepatocellular carcinoma.
ACTA ACUST UNITED AC 2009;
16:816-23. [PMID:
19466377 DOI:
10.1007/s00534-009-0124-4]
[Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2008] [Accepted: 04/09/2009] [Indexed: 12/13/2022]
Abstract
PURPOSE
To assess the mid-term results of MR-guided percutaneous cryoablation for small hepatocellular carcinoma (HCC).
METHODS
Using an argon-based cryoablation system, MR-guided percutaneous cryoablation was performed. The number of tumors was three or fewer. The maximum diameter of tumors was less than 5 cm when solitary and no more than 3 cm when multiple. The Kaplan-Meier method was used to calculate the survival of patients.
RESULTS
Among 15 patients, 16 tumors were treated. The maximum tumor diameter ranged from 1.2 to 4.5 cm, with a mean of 2.5 +/- 0.8 cm (mean +/- standard deviation). The volume of iceballs measured on MR-images was greater than that of the tumors in all cases. The follow-up period ranged from 10 to 52 months, with a mean of 36.6 +/- 12.1 months. One-year and 3-year overall survival were 93.8 and 79.3%, respectively. The complete ablation rate was 80.8% at 3 years. Immediate complications were pneumothorax, hemothorax, and pleural effusion. An ablation zone was not absorbed and content exuded from a scar of the probe tract 4 months after cryoablation in one patient.
CONCLUSION
MR-guided percutaneous cryoablation appears to be a feasible modality and potentially good option for the treatment of small HCC.
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