Acquired hemophilia A presenting as progressive intra-abdominal hemorrhage, muscle hemorrhage and hemothorax postpartum: A case report and literature review.

Acquired hemophilia A (AHA) is a rare antibody-mediated condition in which autoantibodies form against a coagulation factor, most commonly factor VIII (FVIII), causing severe coagulopathy. Here the present report presents a case of AHA in a 35-year-old postpartum woman with continuous polyserous bloody effusions who was admitted to the First Affiliated Hospital of Zhejiang Chinese Medical University (Hangzhou, China) in October 2017 without a history of trauma, anticoagulation treatment or coagulopathy. At presentation, the patient's hemoglobin level was low (70 g/l; normal range: 115-150 g/l) g/l, blood pressure was 89/58 mmHg (normal range, 90-140/60-90 mmHg), and activated partial thromboplastin time was 68.