患者男,3 1/2岁。以全身散在出血点伴鼻衄2天入院。查体:面色黄,杨梅舌、柯费氏斑阴性。全身皮肤可见散在斑点状出血点,指压不退色。双侧鼻孔有血迹。双侧耳后淋巴结如黄豆大小,活动好,有触痛。心、肺无异常。肝脾不大。入院时血红蛋白7.5g％,白细胞3.300,中性50％,淋巴42％,单核8％,血小板4万,出血时间1分,凝血时间2分,导型淋巴细胞4％。抗血小板抗体(-)。骨髓穿刺:有核细胞增生活跃,粒:红=2.4:1,巨核细胞70个,幼稚巨核细胞9个/50,颗粒巨核细胞39个/50,产板巨核细胞 Patient male, 3 1/2 years old. To the whole body scattered bleeding associated with epistaxis 2 days admission. Physical examination: looking yellow, bayberry tongue, Ke Fei’s spot negative. Whole body visible scattered spot skin bleeding, Shiatsu does not fade. Bilateral nostrils with blood. Bilaterally posterior lymph nodes such as soybean size, good activity, tenderness. Heart, lungs without exception. Small spleen and liver. Admission of 7.5g% hemoglobin, leukocyte 3.300, neutral 50%, lymph 42%, mononuclear 8%, platelet 40 000, bleeding time 1 minute, clotting time 2 minutes, 4% of the type of lymphocytes. Anti-platelet antibody (-). Bone marrow aspirate: nucleated cells proliferated actively, grain: red = 2.4: 1, megakaryocyte 70, naive megakaryocyte 9/50, granulocyte megakaryocyte 39/50, plate megakaryocyte