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  • Title: [Local ablation therapy for hepatocellular carcinoma (HCC) on the liver surface: radio-frequency ablation aimed at tumor marginal pre-ablation under endoscopic surgery].
    Author: Ishiko T, Beppu T, Sugiyama S, Suyama K, Tashima R, Masuda T, Hirata A, Kanemitsu K, Egami H, Baba H.
    Journal: Gan To Kagaku Ryoho; 2005 Oct; 32(11):1657-9. PubMed ID: 16315900.
    Abstract:
    RFA for the hepatocellular carcinoma localized on the surface of the liver tends to have some complications such as bleeding, an ejection of tumor and a heat injury to other internal organs even if percutaneous RFA seemed to be done easily. Therefore, we should first choose the RFA treatment under endoscopic (either laparoscope or thoracoscope) surgery for the hepatocellular carcinoma localized on the surface of the liver. Moreover, a direct central puncture should be avoided from the viewpoint of securing a margin, prevention of bleeding and rise in the intratumorale pressure. Now, we selected the unique operation method of RFA: First, the tumor is confirmed under the endoscope, and the tumor range is marked with the endoscopic echo. Second, several times of RFA applied to the tumor surroundings are done, and the margin is secured with avoiding a direct central puncture. If tumor diameter is over 2.5 cm, central ablation of the tumor is considered to be necessary, we can directly puncture the center of the tumor without bleeding since the tumor already has the congelation by surrounding heat effect. We have done RFA by this way for 29 patients with HCC since April 1st, 2004. The complications such as a heat injury to the neighboring organ could be well prevented. An enough margin of ablation about 1 cm around the tumor was confirmed by the postoperative CT image. There was no local recurrence during the average observation period of 290 days, and a severe post operative complication has not occurred. The average of hospitalized period after the operation was about 10 days. Therefore, pre-surrounding ablation preceding central puncture under the endosope for hepatocellular carcinoma on the liver surface is a feasible technique.
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