血液恶性疾病本身或用来治疗这些疾病的强化疗方案常引起中性粒细胞减少,由此所导致的感染的发病率和死亡率均很高,尤其在老年患者。中性粒细胞减少和感染实际上已成为化疗剂量受限的主要原因。中 The hematologic malignancies themselves or the intensive chemotherapy regimens used to treat these diseases often cause neutropenia, resulting in high morbidity and mortality of infections, especially in the elderly. Neutropenia and infection have actually become the main reason for the limited dose of chemotherapy. in