关于儿童白血病的肺部改变,文献上尚有争论。有人认为,白血病患者肺部异常的X线表现,系由白血病的并发症引起,例如感染或肺出血,而不是白血病细胞直接浸润胸内组织所致。虽死后肺的显微镜检查证实白血病时肺实质受累的发生率为31～66％,但X线上白血病性肺浸润却很少见。白血病之肺外侵袭可引起纵隔或胸膜异常的X线表现。90％的急性淋巴细胞性白血病患者所见的纵隔 The literature on the lung changes in childhood leukemia remains controversial. Some people think that leukemia in patients with abnormal lung X-ray findings, caused by the complications of leukemia, such as infection or pulmonary hemorrhage, rather than direct infiltration of leukemia cells in the chest caused. Although posterior lung microscopic examination confirmed the incidence of pulmonary parenchymal involvement of leukemia was 31 to 66%, but X-ray leukemic infiltration is rare. Extrapulmonary invasion of leukemia can cause abnormal mediastinal or pleural X-ray findings. Mediastinal Secrecy seen in 90% of patients with acute lymphoblastic leukemia