Abstract
A case of primary hepatocellular carcinoma with an abnormal increase in the antigenic quantity and activity of Antithrombin III (AT-III) is reported. The patient was a 53-year-old man. The liver was palpated for a five fingerbreadths, but no jaundice or ascites was noted. Computed tomogram (CT) revealed the presence of many nodules of various sizes in the right hepatic lobe. Both viral markers of HBV and HCV were negative. For tumor markers, PIVKA-II was high (27.7 AU/ml) but AFP was normal. Among coagulation and fibrinolytic factors, the activity and antigenic levels of AT-111 were abnormally high (290% and 81.6mg/dl). An US guided needle biopsy of the tumor revealed hepatocellular carcinoma, Edmondson I. The cellularity was high and the tumor cells were small, well differentiated. The tumor cells were positively stained in immunohistochemical staining using the anti-AT-III antibody. It was believed that AT-III produced by the tumor cells was responsible for this exaggerated level.
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