title: Thrombotic thrombocytopenic purpura: a rare cause of thrombocytopenia in HIV-infected hemophiliacs.
abstract: Thrombocytopenia is a common complication in human immunodeficiency virus (HIV)-infected hemophiliacs. The etiology is multifactorial and a majority of the patients with hemophilia exhibit a decreased platelet count within 10 years of seroconversion. Thrombocytopenia in these patients is associated with a high risk of bleeding and death. Thrombotic microangiopathy causing thrombocytopenia in HIV-infected hemophiliacs is extremely rare. We describe an HIV-infected hemophilic patient who presented with bleeding, renal insufficiency, and thrombocytopenia. Platelet transfusion resulted in deterioration of clinical condition. Examination of blood smears demonstrated a microangiopathic process. The patient responded well to plasmapheresis with normalization of platelet and renal function. Thrombotic thrombocytopenic purpura should be suspected in HIV-infected hemophiliacs who present with a new onset of thrombocytopenia and anemia as delay in treatment may result in fatal sequelae.
mesh_terms: D000328:Adult; D015658:HIV Infections / Q000150:complications*; D006467:Hemophilia A / Q000150:complications*; D006801:Humans; D008297:Male; D011697:Purpura, Thrombotic Thrombocytopenic / Q000097:blood* / Q000821:virology*