Balloon ischemic percutaneous microwave coagulaion for hepatic tumor of segmental borderline area

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In three of 20 patients with liver tumors who underwent baloon-ischemic percutaneous microwave coagulation therapy, computed tomography during arterial portography (CTAP) images with balloon occlusion of the hepatic vein revealed localization of a tumor on the borderline of the middle hepatic vein region and the right hepatic vein region. Patient 1 : had metastatic liver cancer in S5, measuring 20 mm in diameter. Microwave coagulation was performed at 60W for 10 minutes under balloon occlusion of the right hepatic artery and hepatic vein. A coagulation area which measured 40 × 24 mm resembled a CTAP image under right hepatic vein occlusion. Patient 2 : had metastatic liver cancer in S5, measuring 15 mm in diameter. Microwave coagulation was performed at 60W for 5 minutes under balloon occlusion of the middle hepatic vein and proper hepatic artery. A coagulation area which measured 50 × 27 mm protruded hemispherically into the middle hepatic vein region. There was little coagulation of the right hepatic vein region. Patient 3 : had hepatocellular carcinoma in S5, measuring 29 mm in diameter. Microwave coagulation was performed at 60W for 8 minutes under balloon occlusion of the right hepatic vein and embolism with gelatin sponge A5 and A8. A coagulation area which measured 48 × 31 mm expanded to the ischemic, right hepatic vein region. In balloon-ischemic microwave coagulation on a segmental borderline, a microwave coagulation area extends matching to the portal venous blood flow occlusion area with a hepatic vein balloon. The microwave coagulation area expanded clearly on the hepatic vein occlusion side, whereas on the hepatic vein non-occlusion side, the microwave coagulation area was obviously limited.
特定非営利活動法人 Microwave Surgery研究会の論文

Balloon ischemic percutaneous microwave coagulaion for hepatic tumor of segmental borderline area

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