Department;
of;
Respiratory;
Medicine;
Department;
of;
Pathology,;
Peking;
Union;
Medical;
College;
Hospital,;
Chinese;
Academy;
of;
Medical;
Sciences;
&;
Peking;
Union;
Medical;
College,;
Beijing;
100730,;
China;
支气管肺泡灌洗液; 计算机断层扫描; 高分辨率; 临床特点; 相关疾病; 细胞计数; 亚急性; 中性粒细胞;