白血病是造血系统恶性肿瘤。急性白血病在青少年肿瘤中占第一位。白血病细胞对全身各器官浸润所致的病理改变可导致器质性或功能性变化,后果十分严重,长期被认为是不治之症。实际上,药物治疗是有一定疗效的。早在1878年就有人用砷化钾治疗慢性粒细胞性白血病,并取得一定疗效。1920年开始用放射线治疗。自发现叶酸可导致白血病恶化后,1947 Leukemia is a hematopoietic malignancy. Acute leukemia in adolescent tumors in the first place. Leukemia cells on the body caused by various organs infiltration pathological changes can lead to organic or functional changes, the consequences are very serious, long-term is considered incurable. In fact, drug treatment is a certain effect. As early as 1878, some people used potassium arsenide to treat chronic myeloid leukemia and achieved certain curative effect. Beginning in 1920 with radiotherapy. Since the discovery of folic acid can lead to the deterioration of leukemia, 1947