男性,14岁。因脐周腹痛、便血2周伴四肢紫癜,于1985年3月5日入院。病前吐蛔虫一条,无特殊食物、药物服用史及感染。体检:四肢可见较密集的紫癜与出血点,高出皮肤,对称分布,大小不等,压之不退色,以两下肢伸侧面为著。膝、踝关节压痛,无红肿。实验室检查:Hb100g/L,WBC51.2×10~(?)/L,中性粒0.88,中幼粒0.02,有中毒颗粒(++)。血小板255×10~9/L。血沉5mm Male, 14 years old. Due to umbilical abdominal pain, blood in the stool 2 weeks with extremities purpura, March 5, 1985 admitted. Premature ejaculation roundworm, no special food, medication history and infection. Physical examination: the limbs can be seen more intensive purpura and bleeding points, higher than the skin, symmetrical distribution, size, pressure of fade, with both lower extremities stretch. Knee, ankle tenderness, no swelling. Laboratory tests: Hb100g / L, WBC51.2 × 10 ~ (?) / L, 0.88 neutrophil, medium and small particles 0.02, poisoning particles (++). Platelets 255 × 10 ~ 9 / L. ESR 5mm