骨髓造血功能减低或衰竭,临床表现为全血细胞减少者称再生障碍性贫血(简称再障)。目前,小儿白血病的治疗已取得一定成绩,而再障(尤其是重型再障)却有一系列环节需要解决。小儿再障病情比成人重,预后差[1～4]。50%发生在6～9岁,3岁以前少见,男女无区别[5]。未治疗的重型再障(SAA)80%于发病6个月内死亡。引起再障的病因甚多,包括 Bone marrow hematopoietic function decreased or failure, clinical manifestations of pancytopenia, said aplastic anemia (referred to as aplastic anemia). At present, the treatment of childhood leukemia has made some achievements, and aplastic anemia (especially severe aphasia) there are a series of links need to be resolved. Pediatric aplastic anemia than adults, poor prognosis [1 ~ 4]. 50% occurred in 6 to 9 years old, rare before age 3, no difference between men and women [5]. Eighty percent of untreated severe azoospermia (SAA) dies within 6 months of onset. There are many causes of aplastic anemia, including