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Updated: Jun 1, 2026

Tail Vein Transection Bleeding Model in Fully Anesthetized Hemophilia A Mice
Published on: September 30, 2021
Acquired factor VIII inhibitor (acquired hemophilia A) presenting as spontaneous blood-filled scrotum
Rajanshu Verma1, Jill Noack, Radhakrishna Vemuri
1Michigan State University/Kalamazoo Center for Medical Studies; and West Michigan Cancer Center, Kalamazoo, MI, USA. rverma@kcms.msu.edu
Abstract:
Acquired hemophilia A, also known as acquired factor VIII deficiency, is an exceedingly rare bleeding diathesis that does not require any personal or family history of bleeding or clotting disorder. Because treatment is available, misdiagnosing or completely missing this diagnosis can be life threatening for patients. Clinicians should be aware that acquired forms of hemophilia do exist and are associated with high morbidity and mortality in elderly adults. We present a case of a 74-year-old man who was diagnosed with acquired factor VIII inhibitor during an admission for community-acquired pneumonia.
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