This is a report of a 62-year-old male patient who had a bleeding disorder due to the presence of a factor VII (proconvertin) inhibitor. After treatment with a high-dose intravenous (IV) immunoglobulin failed and a life-threatening intracranial hemorrhage occurred, plasma exchanges were performed and immunosuppressive therapy was given. The factor VII inhibitor promptly disappeared, and the patient's parameters of hemostasis became normal. Even though a relapse occurred some months later, the patient responded to immunosuppressive therapy. No underlying disorder was evidenced after 17 months of follow-up.

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