[Recurrent epistaxis with coagulation disorders in a boy aged 2 years].

A boy, aged 2 years and 5 months, had recurrent epistaxis, and the coagulation function examination showed that activated partial thromboplastin time (APTT) was significantly prolonged. Further laboratory examinations showed that the prolonged APTT was not immediately corrected in the APTT correction test, with positive lupus anticoagulant and low prothrombin activity. The boy was diagnosed with hypoprothrombinemia-lupus anticoagulant syndrome. The condition was improved after treatment with glucocorticoid, immunoglobulin, and vitamin K 2岁5个月男孩，反复鼻衄，凝血功能发现活化部分凝血活酶时间（activated partial thromboplastin time，APTT）明显延长，进一步实验室检查提示APTT纠正试验为即刻不能纠正，狼疮抗凝物检测阳性，凝血酶原活性低，诊断为低凝血酶原血症-狼疮抗凝物综合征。予激素、丙种球蛋白、维生素K