Cases reported "Neoplasm, Residual"

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1/2. Percutaneous microwave coagulation therapy for superficial hepatocellular carcinoma.

    We report a 67 year-old man with residual hepatocellular carcinoma after arterial embolization therapy, which was located on both the anterior and inferior surfaces of segment 6 of the liver. Percutaneous microwave coagulation therapy could be performed safely and the treated tumor became non-enhancing on contrast computed tomography. Two years after treatment, the tumor remains non-enhancing on contrast computed tomography and has decreased in size. Percutaneous microwave coagulation therapy appears to be useful even in patients who have superficial liver tumors associated with cirrhosis.
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2/2. Hepatic resection for liver metastasis of sigmoid colon cancer after incomplete percutaneous microwave coagulation therapy.

    We report a case of colon cancer with liver metastasis that had been treated previously by sigmoidectomy and partial hepatic segmentectomy. A 55-year-old woman presented with two asynchronous liver metastases, which were treated with percutaneous microwave coagulation therapy. However, evaluation by dynamic computed tomography one week later showed incomplete necrosis in at least one tumor. Surgical resection was subsequently performed and histopathological examination showed the presence of viable cancer cells in both tumors. We conclude that surgical resection is perhaps the best curative method of treatment of metastatic liver tumors of colorectal carcinomas and that dynamic computed tomography is not always accurate for evaluating the effect of microwave coagulation therapy.
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