有的白血病患者,在出现典型表现之前,较长期存在着某种血像异常而被误诊为各种血液病,这种情况称白血病前期。当前,白血病前期实际上是一个回顾性诊断。弄清这个问题,对早期诊断白血病,认识白血病发病机制和寻找防治药物,都有着重要意义。我院于1974年10月收容一例诊断为大细胞性贫血和再生障碍性贫血病人,在我院最后 Some leukemia patients, before the typical performance, the longer existence of some blood abnormalities were misdiagnosed as a variety of blood diseases, a condition called leukemia. Currently, pre-leukemia is actually a retrospective diagnosis. To understand this issue is of great significance to early diagnosis of leukemia, understanding of the pathogenesis of leukemia and looking for prevention and treatment of drugs. Our hospital in October 1974 to accommodate a case of diagnosis of large cell anemia and aplastic anemia in our hospital at the end