李某,男,23岁,工人。于1986年1月感头晕乏力,活动后心悸气短。某医院查白细胞18×10~9/L,分类正常。血红蛋白65g/L,血小板110×10~9/L。骨穿诊断为骨髓增生异常综合征(MDS)慢粒单型白血病。给予阿糖胞苷(Ara-c)10mg×5d肌注,症状无改善,自动出院,同年3月7日来我院。既往健康,系石油工人,有“γ-射线”和“天然气”接触史。家族史无特殊。查体:体温37.4℃,重度贫血貌,皮肤粘膜无出血点 Lee, male, 23 years old, worker. In January 1986 dizziness fatigue, palpitations shortness of breath after the event. A hospital check leukocyte 18 × 10 ~ 9 / L, normal classification. Hemoglobin 65g / L, platelets 110 × 10 ~ 9 / L. Bone wear diagnosis of myelodysplastic syndrome (MDS) CML. Cytarabine given (Ara-c) 10mg × 5d intramuscular injection, no improvement in symptoms, automatic discharge, the same year March 7 to our hospital. Past health, the oil workers, there is “gamma-ray” and “natural gas” contact history. No special family history. Physical examination: body temperature 37.4 ℃, severe anemia, skin and mucous membrane without bleeding point