早在1949年,法国 Hamiltown-Paterson 已注意到白血病的早期表现,并提出白血病前期性贫血(preleukemic anemia)一词。1953年 Block等首先使用白血病前期(preleukemia,PL)这一术语。20多年来,随着临床研究工作的进展,PL 这一名词已为人们所普遍接受,但不同作者使用的诊断标准与名称各异。本症之诊 As early as 1949, Hamiltown-Paterson, France, noticed the early manifestation of leukemia and proposed the term preleukemic anemia. In 1953 Block et al first used the term leukemia (preleukemia, PL). For more than two decades, the term PL has become generally accepted as clinical research progresses, but different authors use different diagnostic criteria and names. The diagnosis of the disease