Bernard-Soulier syndrome: a case report.

An adopted Thai girl has been followed at Children's Hospital, Bangkok, since she was 8 months old. The diagnosis of Bernard-Soulier syndrome was made, based on the clinical features of easy bruising, purpura, petechial hemorrhages and recurrent epistaxis. The abnormal laboratory tests included giant platelets with dark stained granules, mild to moderate thrombocytopenia, prolonged bleeding time, absence of ristocetin induced agglutination but normal ristocetin cofactor, factor VIII coagulant activity and von Willebrand factor antigen. These findings suggested the absence of glycoprotein Ib (GPIb) on the platelet membrane. The genetic transmission can not be evaluated in this patient.