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骨髓增生异常综合征(Myelo dysp lastic syn drom e,MDS)是一组以难治性血细胞质、量异常和高风险发展为急性白血病为特征的恶性克隆性造血干细胞病,原称白血病前期。1982年FAB协作组按细胞形态学特点将MDS分为5个临床亚型:①难治性贫血(RA);②伴环形铁粒幼细胞增多的难治性贫
Myelodysplastic syndrome (MDS) is a group of malignant clonal hematopoietic stem cell disease characterized by refractory cytoplasm, abnormal quantity and high risk of developing acute leukemia, which is called pre-leukemia. In 1982, the FAB collaborative group classified MDS into five clinical subtypes according to morphological features of cells: (1) refractory anemia (RA); (2) intractable lean