中间型再生障碍性贫血(MAA)诊断标准为:骨髓增生减低,外周血至少两系减少,但尚未达重型再生障碍性贫血(SAA)的标准,其中性粒细胞绝对值(ANC)<1.8×10~9/L,血小板计数(plt)<100×10~9/L,网织红细胞绝对值(ARC)<40×10~9/L。 作者回顾了1978年到1991年间12例儿童MAA的临床病程和转归,并与同期儿童SAA进行了比较。12例中男9例,女3例,诊断时中位年龄5.5岁(4月～18岁),9例病因不明,3例有肝炎病 The diagnostic criteria for intermediate aplastic anemia (MAA) are: a decrease in myeloproliferation, a reduction in at least two lines in the peripheral blood but not yet reached the standard for severe aplastic anemia (SAA), with an absolute neutrophil count <1.8 × 10 ~ 9 / L, platelet count (plt) <100 × 10 ~ 9 / L and reticulocyte absolute value (ARC) <40 × 10 ~ 9 / L. The authors reviewed the clinical course and outcomes of MAA in 12 children from 1978 to 1991 and compared them with SAA in children at the same period. There were 9 males and 3 females in 12 cases, with a median age of 5.5 years (range, April to 18 years) at diagnosis, 9 etiologically unknown and 3 hepatitis