患者，女，37岁，因头昏、乏力、心慌、怕冷6个月于1998年8月3日入院。6个月前无诱因感精神不振、疲乏、头昏、怕冷、心慌、胸闷、手脚麻木。2个月前因“感冒”检查白细胞为2．5×109／L，经利血生、中药等治疗无效。否认放射线、毒化学物质接触及氯霉素等药物应用史。体检：体 The patient, female, 37 years old, was admitted to hospital on August 3, 1998 due to dizziness, weakness, palpitation, and cold for 6 months. 6 months ago, no incentive to feel sluggish, tired, dizzy, cold, palpitation, chest tightness, numb hands and feet. 2 months ago due to “cold” check leukocyte 2.5 × 109 / L, by Lee blood, Chinese medicine and other treatment is invalid. Denied the radiation, toxic chemical exposure and chloramphenicol and other drug applications. Physical examination: body