Perivascular Epithelioid Cell Tumor (PEComa) of the Liver Diagnosed by Contrast-enhanced Ultrasonography
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概要
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Perivascular epithelioid cell (PEC) is a unique cell which expresses both myogenic and melanocytic markers, and forms PEComa. A 36-year-old woman presented with a 35 mm-diameter liver tumor. MRI showed poor fat component in the tumor. Contrast-enhanced ultrasonography using the newly developed enhancing reagent, Sonazoid, clearly demonstrated early-phase enhancement of the tumor and rapid drainage of the reagent to veins, suggesting a PEComa. Lateral segmentectomy of the liver was performed. Histologically, epithelioid tumor cells around the vessels were immunostained with both HMB-45 and α-smooth muscle actin, confirming the diagnosis of PEComa. No recurrence has been found for 18 months following the operation.
著者
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Kimura Hiroyuki
Division Of Gastroenterology And Hepatology Department Of Internal Medicine Saitama Medical School
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Chiba Tsutomu
Deparment Of Gastroenterology And Hepatology Kyoto University Graduate School Of Medicine
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Seno Hiroshi
Department Of Anesthesiology Hyogo College Of Medicine
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Fujimoto Sotaro
Division Of Gastrointestinal Medicine Akashi City Hospital
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CHIBA Tsutomu
Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine
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Kimura Hiroyuki
Division of Gastroenterology, Kyoto First Red Cross Hospital
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Akitake Reiko
Division of Gastroenterology, Kyoto First Red Cross Hospital
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Sekoguchi Satoru
Division of Gastroenterology, Kyoto First Red Cross Hospital
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Nakamura Hideki
Division of Gastroenterology, Kyoto First Red Cross Hospital
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Fujimoto Sotaro
Division of Gastroenterology, Kyoto First Red Cross Hospital
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