李某,男,31岁,安徽籍。因头昏、乏力、伴齿龈出血2个月,于1970年12月在某医院住院。查血红蛋白5.8g,红细胞177万,白细胞1,850,中性53%,淋巴42%,酸性5%,血小板3.4万,网织红细胞1%。查体:皮肤见散在出血点,巩膜无黄染,浅表淋巴结不肿大。心肺正常,肝脾肋下未触及。曾先后作3次骨髓检查均提示骨髓增生减低,红系、粒系均增生低下,粒红比4.7:1,巨核细胞偶见,血小板散在少见,淋巴细胞相对增高占53%。患者发病前2个月在某仓库接触甲苯约20天。诊断为再生障碍性贫血(再障)(甲苯所致)。使用强的松、丙酸 Lee, male, 31 years old, Anhui nationality. Due to dizziness, fatigue, bleeding with gums 2 months, in December 1970 in a hospital. Check hemoglobin 5.8g, 1.777 million erythrocytes, 1,850 leukocytes, 53% neutral, lymphatic 42%, acid 5%, platelet 34000, reticulocyte 1%. Physical examination: see the skin scattered in the bleeding point, sclera no yellow dye, superficial lymph nodes are not swollen. Cardiopulmonary normal, liver and spleen ribs did not touch. Has done 3 bone marrow examination have prompted a decrease in bone marrow hyperplasia, erythroid, myeloid hyperplasia are low, red than 4.7: 1, megakaryocytes occasionally scattered platelet rare, relative increase in lymphocytes accounted for 53%. Two months before the onset of exposure to toluene in a warehouse for about 20 days. Diagnosis of aplastic anemia (aplastic anemia) (caused by toluene). Use prednisone, propionic acid