Current role of microwave ablation in the treatment of small hepatocellular carcinomas

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Φορέας Ελληνική Γαστροεντερολογική Εταιρία
Συλλογή Annals of Gastroenterology Current role of microwave ablation in
the treatment of small hepatocellular carcinomas
Επιμέρους συλλογή Review Articles
ΠεριγραφήPercutaneous radiofrequency ablation (RFA) can be as effective as surgical resection in terms of overall survival and recurrence-free survival rates in patients with small hepatocellular carcinoma (HCC). Effectiveness of RFA is adversely influenced by heat-sink effect. Other ablative therapies could be considered for larger tumors or for tumors located near the vessels. In this regard, recent improvements in microwave energy delivery systems seem to open interesting perspectives to percutaneous ablation, which could become the ablation technique of choice in the near future. Microwave ablation (MWA) has the advantages of possessing a higher thermal efficiency. It has high efficacy in coagulating blood vessels and is a relatively fast procedure. The time required for ablation is short and the shape of necrosis is elliptical with the older systems and spherical with the new one. There is no heat-sink effect and it can be used to ablate tumors adjacent to major vessels. These factors yield a large ablation volume, and result in good local control and fewer complications. This review highlights the most relevant updates on MWA in the treatment of small (<3 cm) HCC. Furthermore, we discuss the possibility of MWA as the first ablative choice, at least in selected cases.Keywords Microwave ablation, small hepatocellular carcinoma, radiofrequency ablationAnn Gastroenterol 2016; 29 (4): 460-465
ΕκδότηςAnnals of Gastroenterology
Ημερομηνία2016-09-30
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ΠηγήAnnals of Gastroenterology; Volume 29, No 4 (2016); 460
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