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  • Title: Radiofrequency ablation of subcapsular hepatocellular carcinoma: single center experience.
    Author: Filippousis P, Sotiropoulou E, Manataki A, Konstantinopoulos O, Thanos L.
    Journal: Eur J Radiol; 2011 Feb; 77(2):299-304. PubMed ID: 19733023.
    Abstract:
    PURPOSE: To present a single center results, regarding radiofrequency ablation (RFA) of subcapsular hepatocellular carcinoma (HCC). MATERIALS AND METHODS: Forty patients with subcapsular HCC were treated with RFA under CT guidance for fifty-two discrete lesions in our institution. Twenty-eight patients underwent ablation of a solitary tumor and twelve patients underwent RFA of two tumors. Six patients had a subcapsular HCC with an exofitic location. All lesions had a diameter of <4 cm. We used two types of generators and electrodes: spiral electrode and expandable electrode. Needle track ablation was performed in all cases. Follow-up consisted of an abdomen computed tomography (CT) scan after contrast administration immediately after each session and then after one, three, six, and twelve months. RESULTS: In forty-eight lesions complete tumor ablation was depicted at the one month CT scan. In four lesions with residual viable tumor, a second session was performed. After the second ablation no residual tumor was observed in any patient. No major complications occurred in any of our patients. Fever with a temperature up to 39 °C was documented during the first days as part of the post-ablation syndrome in thirteen patients (32.2%). Seeding along the needle track was observed in none of our patients. Local tumor progression, was observed in ten lesions (19.25%) and in all cases a second RFA session was performed with optimal results. CONCLUSION: Subcapsular location should not be considered as a contraindication for liver RFA.
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