患者,男,23岁,住院号426884。因不规则发热1周,以发热待查收住观察室予于输液、青霉素肌注,同时肌注复方氨基比林2毫升,因仍发热39.5℃;翌日又肌注复方氨基比林2毫升。第三天查白细胞由3.7×10~9/L 降至0.45×10~9/L,以白细胞减少症及疑白血病诊断于1990年10月10日收住入院。发病前未用过复方氨基比林类似药物,既往体健,无特殊化学物品接触及服氯霉素史,无药物过敏史,否认肝炎及疟疾史。亦无饮酒嗜好。入院时体查:发育正常,营养良好,T39.5℃,P112次/分,R26次/分,BP14/9kPa。全身皮肤无紫癜及皮疹,全身浅表淋巴结未及,巩膜黄染,咽部充血,扁桃体Ⅰ°肿大。胸骨无压痛,心肺(—)。腹软,平坦,无腹壁静脉曲张,全腹 Patient, male, 23 years old, hospital number 426884. Due to irregular fever for 1 week, with fever to be admitted to the observation room for infusion, penicillin intramuscular injection, while intramuscular injection of 2 mg of aminopyrine, fever still 39.5 ℃; the next day and intramuscular injection of compound aminopyrine 2 ml. On the third day, the number of leukocytes decreased from 3.7 × 10-9 / L to 0.45 × 10-9 / L. The diagnosis of leukopenia and suspected leukemia was admitted to hospital on October 10, 1990. Before the onset of similar compound aminopyrine similar drugs, past physical health, no special chemical exposure and service history of chloramphenicol, no history of drug allergy, deny hepatitis and history of malaria. No drinking habits. Physical examination on admission: normal development, good nutrition, T39.5 ℃, P112 times / min, R26 beats / min, BP14 / 9kPa. Whole body skin without purpura and rash, systemic superficial lymph nodes, sclera yellow dye, pharynx congestion, tonsil I ° enlargement. Sternal no tenderness, cardiopulmonary (-). Abdominal soft, flat, no abdominal varicose veins, the whole abdomen