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Percutaneous electrochemotherapy in the treatment of portal vein tumor thrombosis at hepatic hilum in patients with hepatocellular carcinoma in cirrhosis: A feasibility study

Luciano Tarantino  Giuseppina Busto  Aurelio Nasto  Raffaele Fristachi  Luigi Cacace  Maria Talamo  Catello Accardo  Sara Bortone  Paolo Gallo  Paolo Tarantino  Riccardo Aurelio Nasto  Matteo Nicola Dario Di Minno  Pasquale Ambrosino  
【摘要】:AIM To treated with electrochemotherapy(ECT) a prospective case series of patients with liver cirrhosis and Vp3-Vp4- portal vein tumor thrombus(PVTT) from hepatocellular carcinoma(HCC), in order to evaluate the feasibility, safety and efficacy of this new non thermal ablative technique in those patients. METHODS Six patients(5 males and 1 female), aged 61-85 years(mean age, 70 years), four in Child-Pugh A and two in Child-Pugh B class, entered our study series. All patients were studied with three-phase computed tomography(CT), contrast enhanced ultrasound(CEUS) and ultrasound-guided percutaneous biopsy of the thrombus before ECT. All patients underwent ECT treatment(Cliniporator Vitae?, IGEA Sp A, Carpi, Modena, Italy) of Vp3-Vp4 PVTT in a single session. At the end of the procedure a post-treatment biopsy of the thrombus was performed. Scheduled follow-up in all patients entailed: CEUS within 24 h after treatment; triphasic contrastenhanced CT and CEUS at 3 mo after treatment and every six months thereafter.RESULTS Post-treatment CEUS showed complete absence of enhancement of the treated thrombus in all cases. Post-treatment biopsy showed apoptosis and necrosis of tumor cells in all cases. The follow-up ranged from 9 to 20 mo(median, 14 mo). In 2 patients, the followup CT and CEUS demonstrated complete patency of the treated portal vein. Other 3 patients showed a persistent avascular non-tumoral shrinked thrombus at CEUS and CT during follow-up. No local recurrence was observed at follow-up CT and CEUS in 5/6 patients. One patient was lost to follow-up because of death from gastrointestinal hemorrage 5 wk after ECT. CONCLUSION In patients with cirrhosis, ECT seems effective and safe for curative treatment of Vp3-Vp4 PVTT from HCC.

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