title: Use of a bleeding time determination in the evaluation of unexplained hematuria.
abstract: Although von Willebrand's disease is an unusual cause of gross hematuria in children, it is readily treatable with fresh frozen plasma or cryoprecipitate. We present 2 cases of recurrent, painless gross hematuria owing to this congenital factor VIII deficiency disorder. In each case the diagnosis was suggested first by the finding of a prolonged bleeding time. We suggest that the bleeding time determination be included as part of the screening hemostatic studies used in the evaluation of unexplained hematuria.
mesh_terms: D001760:Bleeding Time; D002648:Child; D006417:Hematuria / Q000209:etiology*; D006801:Humans; D008297:Male; D014842:von Willebrand Diseases / Q000150:complications* / Q000175:diagnosis