title: Severe thrombocytopenia in sickle cell crisis.
abstract: Thrombocytopenia is unusual in sickle cell disease. We present the case of a child with homozygous sickle cell disease who experienced life-threatening thrombocytopenia during a prolonged and disabling vasoocclusive episode. Irreversibly sickled cells were conspicuously absent from the peripheral blood at presentation and during the subsequent protracted illness. These observations illustrate the pathophysiology of the intravascular events during vasoocclusive crisis and provide indirect evidence for the consumption of both platelets and irreversibly sickled cells at sites of infarction.
authors.affiliation: Division of Hematology, Hospital for Sick Children, Toronto, Ontario, Canada.
authors.forename: U
authors.initials: U
authors.lastname: Allen
authors.forename: H
authors.initials: H
authors.lastname: MacKinnon
authors.forename: A
authors.initials: A
authors.lastname: Zipursky
authors.forename: M
authors.initials: M
authors.lastname: Stevens
mesh_terms: D000755:Anemia, Sickle Cell / Q000150:complications* / Q000628:therapy; D001803:Blood Transfusion; D002648:Child; D005260:Female; D006470:Hemorrhage / Q000209:etiology; D006801:Humans; D008107:Liver Diseases / Q000209:etiology; D013921:Thrombocytopenia / Q000209:etiology* / Q000628:therapy