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Congenital factor XIII deficiency associated with von willebrand disease

A boy with umbilical bleeding and severe hemorrhages after minor trauma, without family bleeding history, was studied. Coagulation tests showed abnormalities in FXIII subunits and FVIII/vWF complex. Both parents presented results compatible with a heterozygote state for FXIII deficiency and the father had abnormalities of FVIII/vWF. The propositus was diagnosed as congenital FXIII deficiency associated with vWD. No severe hemorrhagic complication was observed after a prophylactic regimen with cryoprecipitates.