Hepatectomy using a microwave tissue coagulator for 99 patients with HCC

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This series of 99 consecutive hepatic resections for hepatocellular carcinoma (HCC) performed using microwave tissue coagulator (MTC) by one surgical team over a 10-year period shows results that compare with other reports in regard to blood loss, operation time, and clinical outcome. The mean blood loss was 838, 1948, 1765, 1325 and 6053 ml for partial (HR0), subsegmental (HrS), segmental (Hr1), lobar (Hr2), and lobar or extended lobar resection (ext. Hr2) with tumor thrombus in main portal trunk or having huge tumor 1kg or bigger. The mean operation time was 3h 43m, 4h 21m, 4h 36m, 4h 53m, and 7h 15m for Hr0, HrS, Hr1, Hr2, and ext Hr2. In Hr1 group, the blood loss and operation time were most minimized in patients who underwent lateral segmentectomy. In Hr2 group, mean blood loss and operation time were most higher in cenrtal bi-seg-mentectomy. The satety of the method described herein is evident by the in-hospital mortality rate of 3% and a morbidity rate of 13.1%. The 5-year survival rate was 41%. 5-year survival of 55 resection margin positive patients (49.6%) was not different with that of 23 resection margin negative patients (54%). Recurrence near the resected margin was seen in only 9 patients (12%). We concluded hepatectomy using MTC is useful, safe, reproducible, and applicable in liver surgery.
特定非営利活動法人 Microwave Surgery研究会の論文