Acquired Hemophilia in an Elderly Patient with Carcinoma of the Ampulla of Vater
2020
Acquired hemophilia is a rare autoimmune bleeding disorder related to the production of autoantibodies that inhibit clotting factor VIII or IX. The underlying cause can be autoimmune disease, malignancy, pregnancy, or medications, but it is most commonly idiopathic. Here we present the case of an 81-year-old patient with locoregionally relapsed periampullary carcinoma who presented with soft tissue hematoma and an abnormally elevated activated partial thromboplastin time (aPTT) in the presence of a normal prothrombin time. A diagnosis of acquired hemophilia was established. The patient was managed with immunosuppressive prednisone and cyclophosphamide plus immunoglobulin G. He also received a cycle of chemotherapy with gemcitabine and oxaliplatin, because the underlying malignancy was the cause of the bleeding disorder. Care was complicated by neutropenia and nosocomial fever, but the patient eventually showed signs of clinical stability, while the aPTT decreased 2-fold. The patient was successfully discharged from the hospital and continued treatment in outpatient care.
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