1病历资料患者男,72岁,主因“发热1周,喘憋2 d”于2015-02-06就诊于我院。应用莫西沙星后无好转,以“肺炎”收入院。患者既往食道癌4个月,曾接受放化疗及激素治疗;糖尿病病史3个月,血糖控制欠佳。入院后胸部CT示双肺多发斑片、磨玻璃影。白细胞8.49×109/L(中性粒细胞0.891);降钙素原1.91μg/L,C反应蛋白120 mg/L。结合患者病史及 1 patient data Patient male, 72 years old, mainly due to “fever 1 week, wheezing 2 d ” in 2015-02-06 for treatment in our hospital. No improvement after application of moxifloxacin, with “pneumonia” income hospital. Patients with previous esophageal cancer for 4 months, had received radiotherapy and chemotherapy and hormone therapy; diabetes history of 3 months, poor blood glucose control. Chest CT showed multiple lung lesions after admission, ground glass shadow. Leukocyte 8.49 × 109 / L (neutrophil 0.891); procalcitonin 1.91μg / L, C-reactive protein 120 mg / L. Combined with the patient’s history and