白血病前期(Preleukemia.以下简称白前)是某些急性白血病病例,在确诊前一段时期,有血象和骨髓的一些非特异性改变,根据一般临床诊断标准,不足以确诊为某种血液疾病,也不能肯定为白血病,但经过数月或数年后发展为急性白血病,因而白前往往是确诊白血病之后的回顾性诊断。 Preleukemia (hereinafter referred to as pre-white) is a case of some acute leukemia, some period of time before the diagnosis of blood and bone marrow non-specific changes, according to the general clinical diagnostic criteria, not enough to be diagnosed as a blood disease, nor Certainly leukemia, but after a few months or years after the development of acute leukemia, white is often the diagnosis of leukemia after the retrospective diagnosis.