造影超音波を併用した肝癌のラジオ波凝固療法の有用性

概要

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Purpose : To evaluate the usefulness of contrast-enhanced ultrasonography (CEUS) guidance in RFA for HCC that could not be depicted by US.Methods and materials : Thirty-seven HCCs that could be depicted by US underwent RFA. Five HCCs that could not be depicted by US underwent RFA guided by real-time CEUS.Results : (Conventional RFA Group) In 9 (38%) of 24 HCCs evaluated with CEUS after initial RFA, residual lesions were found. These lesions could be treated with PEIT guided by CEUS. There was only one local tumor recurrence (4.2%). On the other hand, in 5 (39%) of 13 HCCs evaluated with only contrast-enhanced helical CT after initial RFA, residual lesions were found. These lesions were treated with conventional PEIT. There were 3 local tumor recurrences (23%). (CEUS RFA Group) There was no residual lesion and local recurrence.Conclusion : CEUS may be useful in real-time guiding PEIT and RFA in HCC that could not be depicted by US.