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A 66-year-old non-hemophiliac man developed widely spreaded hematoma in soft tissues around neck. On the day of admission, he was nearly choked by the giant hematoma which markedly compressed trachea. Initially, to keep air way, an intratracheal intubation using a fiber scope was carried out. Coagulation studies revealed a marked prolongation of activated partial thromboplastin time (129 seconds, control: 24.9-33.2), a diminished activity of factor VIII (less than 1%) and a significant increase of factor VIII inhibitor titer (60 Bethesda unit/ml). We thereby diagnosed coagulopathy related to acquired inhibitor against factor VIII. The general combination therapy of intravenous infusion of both prothrombin complex concentrates and activated prothrombin complex concentrates, prednisolone and plasma exchange successfully stopped expansion of the giant hematoma. However, because the titer of factor VIII inhibitor remained increased and the activity of factor VIII was continued to reduced, cyclosporin was additionally administrated. As a result, the titer of factor VIII inhibitor was markedly improved, but the reduced activity of factor VIII was continued and re-bleeding around neck was observed. We thereby administered steroid pulse therapy, which resulted in complete remission of the disease activity and recovery of factor VIII activity.

A patient with life-threatening giant hematoma caused by acquired inhibitor to factor VIII.