再生障碍性贫血(简称再障)是一组由理化、生物等多种原因所造成的骨髓造血干细胞缺陷、造血微环境损伤及免疫功能异常,进而导致骨髓造血功能衰竭、全血细胞减少的综合征。急性再障(AAA)的发病率虽然低于慢性再障,但自然生存期短,年 Aplastic anemia (referred to as aplastic anemia) is a group of physical, biological and other causes of bone marrow hematopoietic stem cell defects, hematopoietic microenvironment damage and immune dysfunction, leading to bone marrow hematopoietic failure, pancytopenia syndrome . Although the incidence of acute aplastic anemia (AAA) is lower than chronic aplastic anemia, but the natural short-lived, years