Coexistence of lupus anticoagulant and acquired haemophilia in a patient with monoclonal gammopathy of unknown significance

Abstract

Acquired haemophilia or factor VIII (FVIII) deficiency, caused by FVIII inhibitorantibodies, is a very rare condition that commonly results in severe haemorrhagic complications. We report a case of acquired haemophilia presenting with a left calf nontraumatichaematoma. The patient was also found to have lupus anticoagulant (LAC). The simultaneous presence of LAC and FVIII inhibitor is exceedingly rare. The differentiationbetween these two conditions is crucial, because both result in a prolongationof the activated partial thromboplastintime test, which does not correct when mixed with the plasma of a normal control; however, the clinical manifestations range from thrombosis in the presence of LAC to massive haemorrhage with FVIII inhibitors.

Keywords

acquired haemophila factor VIII inhibitors lupus anticoagulant monoclonal gammopathy

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