Tamoxifen Therapy for Recurrent Mucosal Bleeding in Hereditary Hemorrhagic Telangiectasia.

A 60-year-old Caucasian man had a 55-year history of recurrent severe epistaxis and later presented with multiple gastrointestinal (GI) bleeding from hereditary hemorrhagic telangiectasia (HHT). Bleeding was exacerbated due to coexistent mild hemophilia A. Despite repeated conventional surgical interventions, tranexamic acid and recombinant factor VIII (FVIII) prophylaxis, bleeding episodes worsened in frequency and severity, resulting in the patient becoming transfusion dependent. The introduction of tamoxifen therapy resulted in reduced transfusion requirement.