骨髓增生异常综合征（MDS）主要靠细胞学诊断。现将我院1984年～1997年诊断的31例MDS报告如下。一、临床资料男18例，女13例，年龄7个月～14岁。按形态学分型（TAN分型）标准分为5型，其中难治性贫血（RA）8例，环状铁粒幼细胞性难治性贫血（RA－S）4例，原始细胞过多性难治性 Myelodysplastic syndromes (MDS) mainly rely on cytology. 31 cases of MDS diagnosed in our hospital from 1984 to 1997 are as follows. First, the clinical data of 18 males and 13 females, aged 7 months to 14 years old. According to the morphological classification (TAN classification), the patients were divided into 5 types, including 8 cases of refractory anemia (RA), 4 cases of RA-S, 4 cases of primordial cell hyperplasia Refractory