ObjectiveTo study the clinical manifestations, related factors and therapeutic methods of Retinoic acid syndrome (RAS) during the process of Arsenic Trioxide (As_2O_3) treating acute promyelocytic leukemia (APL) newly-diagnosed patients.

• 探讨三氧化二砷(As_2O_3)治疗初诊急性早幼粒细胞白血病(APL)过程中发生维甲酸综合征(RAS)的临床表现、相关因素及治疗方法。