骨髓增生异常综合征(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(主要为急性髓细胞白血病)为特征的恶性克隆性造血于细胞病。小儿MDS较少见,其临床表现和转归与成人不完全相同。本文对1987.1～1999.3收治的13例小儿MDS Myelodysplastic syndrome (MDS) is a group of malignant, hematopoietic, hematopoietic, characterized by refractory cytoplasm, abnormal quantity and high risk of developing acute leukemia, primarily acute myeloid leukemia. Pediatric MDS is rare, its clinical manifestations and outcomes are not exactly the same with adults. This article from 1987.1 ~ 1999.3 admitted to 13 cases of pediatric MDS