患者,男,18岁,学生。因“头晕,乏力,心悸20d”于2009年6月30日入院。患者于2009年6月10日开始无明显诱因出现头晕、乏力,自觉心悸,无其他伴随症状。期间伴有低热,多为午后或夜间发热(具体体温不详),次日晨可自行恢复正常。在当地医院查血常规示:WBC 21.7×109/L,Hb 46g/L,PLT 77×109/L,外周血涂片可见原始 Patient, male, 18 years old, student. Because of “dizziness, fatigue, palpitations 20d ” on June 30, 2009 admission. Patients on June 10, 2009 no obvious incentive to appear dizziness, fatigue, conscious palpitations, no other symptoms. During accompanied by fever, mostly in the afternoon or night fever (specific body temperature unknown), the next morning morning to restore their normal. Blood tests in local hospitals showed: WBC 21.7 × 109 / L, Hb 46g / L, PLT 77 × 109 / L, peripheral blood smear can be seen in the original