대한영상의학회지 (Journal of the Korean Society of Radiology)

  • 제81권3호
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  • Pages.620-631
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  • 2020
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  • 1738-2637(pISSN)
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  • 2951-0805(eISSN)
대한영상의학회 (The Korean Society of Radiology)
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5 cm 이하의 간암에서 식염수 주입방식 전극을 이용한 고주파 소작술: 국소 재발에 영향을 미치는 인자

Radiofrequency Ablation of Hepatocellular Carcinoma (≤ 5 cm) with Saline-Perfused Electrodes: Factors Affecting Local Tumor Progression

  • 김동호 (가톨릭대학교 여의도성모병원 영상의학과) ;
  • 정동진 (가톨릭대학교 여의도성모병원 영상의학과) ;
  • 조세현 (가톨릭대학교 여의도성모병원 소화기내과) ;
  • 한준열 (가톨릭대학교 여의도성모병원 소화기내과)
  • Dong Ho Kim (Department of Radiology, Yeouido St. Mary's Hospital, The Catholic University of Korea) ;
  • Dong Jin Chung (Department of Radiology, Yeouido St. Mary's Hospital, The Catholic University of Korea) ;
  • Se Hyun Cho (Department of Gastroenterology, Yeouido St. Mary's Hospital, The Catholic University of Korea) ;
  • Joon-Yeol Han (Department of Gastroenterology, Yeouido St. Mary's Hospital, The Catholic University of Korea)
  • 투고 : 2019.06.06
  • 심사 : 2019.09.14
  • 발행 : 2020.05.01
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초록

목적 5 cm 이하 크기의 간암을 가진 92명의 환자군에서 식염수 주입방식 전극을 이용한 고주파 소작술의 국소 재발률과 예후인자를 평가하였다. 대상과 방법 2009년부터 2015년까지 간암으로 식염수 주입전극 고주파 소작술을 받은 92명 환자(148개 간암)를 대상으로 하였다. 후향적으로 기술적인 성공과 효능, 국소 재발률을 분석하였다. 국소 재발의 가능한 예후인자로써 혈관주위종양, 횡경막하종양, 인공복수 유무, 2 cm이상 크기, 이전 간동맥색전술 치료 여부를 평가하였다. 결과는 각각의 병변 별로 분석하였다. 결과 1~97.4개월의 추적관찰 기간 동안 누적 국소 재발률은 1년, 3년, 5년에서 각각 7.9%, 11.4%, 14.6%였다. 5년 누적 국소 재발률은 혈관주위간암과(35.1%; p = 0.009) 횡경막하간 암에서(38.9%; p = 0.002) 각각 비교군에 비해 유의미하게 높았다. 다른 예후인자들에서 국소 재발률의 유의미한 차이는 없었다(p > 0.05). 결론 식염수 주입전극을 이용한 고주파 소작술은 5 cm 이하 크기의 간암을 국소 재발률 증가없이 안전하고 효과적으로 치료할 수 있다. 그렇지만 식염수 주입전극으로도 혈관 주위와 횡경막하 위치의 간암은 다른 부위에 비해 국소 재발률이 높으므로, 혈관주위간암과 횡경막하간암은 식염수 주입전극을 이용한 고주파 소작술에서도 국소 재발의 위험성이 크다는 것을 유념하여야 한다.

Purpose We aimed to assess local tumor progression (LTP) rate and associated prognostic factors in 92 patients who underwent radiofrequency ablation (RFA) using saline-perfused electrodes to treat hepatocellular carcinoma (HCC) (≤ 5 cm). Materials and Methods Total 92 patients with 148 HCCs were treated with RFA using saline-perfused electrodes, from 2009 to 2015. We retrospectively evaluated technical success, technique efficacy, and LTP rates. Potential prognostic factors for LTP were perivascular tumor, subphrenic tumor, artificial ascites, tumor size (≥ 2 cm), and previous treatment of transarterial chemoembolization. Analysis was performed by lesion, rather than by person. Results During follow-up period from 1 to 97.4 months, total cumulative LTP rates were 7.9%, 11.4%, and 14.6% at 1, 3, and 5 years, respectively. These values were significantly higher in the perivascular (35.1%; p = 0.009) and subphrenic group (38.9%; p = 0.002) at 5-year. We did not observe any significant difference in LTP according to other prognostic factors (p > 0.05). Conclusion RFA with saline-perfused electrode is a safe and effective treatment modality for HCC (≤ 5 cm), with lower LTP rates. Nevertheless, perivascular and subphrenic HCCs demonstrated higher LTP rate than other sites. It is imperative to note that perivascular and subphrenic location of HCC are associated with a high risk of local recurrence, despite the use of saline-perfused electrodes.

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