[Acquired dysfibrinogenemia in a child in the course of a liver disease].

This report documents the results of coagulation studies in a 15-year old boy with hepatic disease of possibly autoimmune origin. Thrombin- and reptilase clotting times were prolonged. The results of fibrinogen determinations with different methods (heat precipitation, kinetic assay according to Clauss) lead to the assumption of a qualitative anomaly of fibrinogen (dysfibrinogenaemia). Investigations with purified fibrinogens from the patient and a healthy control confirmed this assumption. The thrombin clotting time of purified fibrinogen from the patient was clearly prolonged in comparison to the purified fibrinogen from a healthy control. The fibrin monomers of the patient exhibited impaired polymerization. No structural abnormalities were detected by electrophoretic techniques, particularly the thrombin-induced release of fibrinopeptides was found to be normal. The coagulation abnormalities resolved after glucocorticoid administration.