Results 8 cases were found to be p21 positive in 25 patients with MDS(32.0%),in which 5 patients evolved to acute myeloblastic leukemia(AML) and their median survival period was 21 months.

• 结果25例骨髓增生异常综合征（MDS）患者中有8例p21阳性，占32.；0%25。 其中5例p21阳性的MDS患者发生急性白血病（AML）转化，中位数存活期为21个月。