传染性非典型肺炎31例胸部X线影像表现

Manifestations of chest X-ray of 31 cases of infectious SARS

目的研究传染性非典型肺炎影像特点。为今后该病的诊断提供X线诊断依据。方法回顾性分析研究31例临床诊断为传染性非典型肺炎患者胸部X线检查结果。结果从发热到出现胸部X线异常影像平均为4.2d,从出现异常影像到极期(X线影像最重的1d)平均为6.4d,从极期到大部或基本吸收消散平均为8d。有28例双侧中、下肺野出现不同程度的阴影,占90.3%;有16例早期表现为雾状、磨砂玻璃样浅淡阴影,占51.6%;全部病例均为多叶、多节段受损,占100%;有12例遗留条索状、网格状、蜂窝状阴影,占38.7%。结论传染性非典型肺炎发病后数天内胸片可无异常改变;大多数患者肺损害为多叶,多节段;胸片影像表现四不象,呈多种肺部炎性疾病影像表现;胸片阴影多发部位在中下2/3肺野;一部分患者遗留肺纤维化;胸部CT检查可早期发现病灶。

Objective] To study the image characteristics of infectious SARS and to provide basis for future X-ray diagnosis.[Methods] Retrospective analysis was made on the chest X-ray results of 31 cases of infectious SARS.[Results] The average days from fever to abnormal image in chest X-ray was 4.2 d, from the appearance of abnormal image to maximum point (the most serious x-ray image) was 6.4 d, from maximum point to major absorption was 8 d. 28 cases were found with shadows of different degrees in the middle and lower parts of lung (90.3%).16 cases were found with foggy opacity shadows (51.6%). All the cases were found with multi-lobes damages (100%). 12 cases were found with shadows of ropes, net and honeycombs shapes (38.7%).[Conclusion] No abnormal changes may be found during early phase of SARS; a majority of patients has multi-lobe damages on lung; the manifestation of chest X-ray is irregular showing several kinds of lung inflammation; the opacity is usually in the middle and lower 2/3 parts of the lungs; Lung fibrosis was found on some patients; Early focus of infection can be discovered by CT examination.