难治性贫血(RA)是临床较常见的造血干细胞疾病。它是以现有疗法,特别是抗贫血药物,如铁剂或各种生血素等治疗均难以奏效和治愈的一组贫血综合征。患者除以贫血为主要表现外,伴或不伴有白(粒)细胞和/或血小板减少,周围血细胞形态可有异常。骨髓呈病态造血,红系、粒系、单核系及巨核细胞系均可见程度不阿的质与量的异常改变。本类型贫血,多 Refractory anemia (RA) is a more common clinical hematopoietic stem cell disease. It is a group of anemia syndromes that are refractory and curable with existing therapies, especially anti-anemic drugs such as iron or various hematins. In addition to patients with anemia as the main performance, with or without white (granulocytes) and / or thrombocytopenia, peripheral blood cell morphology may be abnormal. Bone marrow was pathological hematopoietic, erythroid, myeloid, monocytic and megakaryocytic lines were seen in varying degrees of quality and quantity of abnormal changes. This type of anemia, and more