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  • Title: [Therapy of malignant liver tumors using microwave and radiofrequency ablation].
    Author: Popescu I, Sîrbu-Boeţi MP, Tomulescu V, Ciurea S, Boroş M, Hrehoreţ D, Jemna C.
    Journal: Chirurgia (Bucur); 2005; 100(2):111-20. PubMed ID: 15957451.
    Abstract:
    The aim of our study was to evaluate the efficiency for thermo-ablation with microwave and radiofrequency on patients with malignant liver tumors. From January 2002 to January 2005, in our Center of General Surgery and Liver Transplantation in 53 patients 70 sessions of thermoablation were carried out. The mean age was 58 years (25-79 years). Sex ratio men: women was 1.8 (34:19). The diagnosis was hepatocarcinoma in 38 patients (72%), liver metastases from colorectal cancer in 9 (17%) and from non-colorectal cancer (6-11%). The most tumors were single (36-68%). The mean diameter was 39.5 mm (9-94 mm). Percutaneous approach was used in 14 interventions (20%), laparoscopic in 2 (3%) and open approach in 54 cases (77%). We performed 54 sessions of microwave ablation in 42 patients and 8 sessions of radiofrequency ablation in 5 patients. Both methods were applied in 6 patients during 8 sessions. Tumor ablation was done together with liver resection in 10 patients (19%) and resections of other organs in other 8 patients (15%). Morbidity was 12%. The encountered complications were ascites, right pleural effusion and liver abscesses. There was no death. Total and partial necrosis was observed in 27, respectively 20 patients. Local recurrence occurred in one patient but distal liver recurrences were diagnosed in 13 patients. After thermoablation for partial necrosis, local or distal recurrences patients received arterial chemoembolization (5), systemic chemotherapy (23), liver resection (1) and transplantation (1). The mean survival at 1 year and 3 years was 77% and respectively 38%. Microwave or radiofrequency ablation is a simple treatment method, with proved efficiency and minimal risks whose main indication is unresectable tumor.
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