SARS的CT表现及动态变化

目的：探讨非典型肺炎(SARS)的CT表现及动态变化。方法：对我院22名感染非典型肺炎的医护人员及2例非典型肺炎住院病人(已死亡)的HRCT动态观察。结果：早期病灶为单个或多个散在病灶．双上肺及双下肺背段为主。病灶较小。密度较高．边界比较清楚．可实变．10％左右病人(4例)局限在早期发现的病灶范围。5d后开始吸收、好转；80％以上的病人．肺内病灶进展较快、较广．呈跳跃性播散。易实变、纤维化．严重病人可合并有胸膜增厚．胸膜腔积液；肺内病灶大部分完全吸收．小部分病人肺内残留一些条索状阴影．个别病人因双肺广泛病变致呼吸衰竭而死亡．结论：SARS的肺部CT具有一定的相对特征性表现．CT检查对于SARS的诊断、指导治疗及疗效观察有重要意义。

Manifestation and Dynamic Changs of SARS on CT

Objective:To study the manifestation and dynamic changes of SARS on CT. Methods:24 cases confirmed SARS (22 cases were doctors or nurses who were cured; 2 cases were patients in hospital who died ) were selected, all cases were observed dynamically on HRCT. Results:In early stage, the lesion distributed singl or multiply in the upper lung and/or in the superius segmentum of lower lung, with small size? higher density and clear border and can be consolidation. About 10% cases(4 in 24) were found the lesion limited in the early range. The lesion began absorbing in 5 days. In progressive stage, the lesion(>80% cases) was found rapid progress?wide distribution, and easy consolidation?fibrosis. Pleural effusion and thickening can be seen in the severe cases. In recovering and absorbing stage, the lesion can be absorbed completely in most cases, but some stripes can be found in a few cases. In 2 cases(non-doctors or nurses ) were found the lesion developed into bilateral lung, which led to respiratory failure and death. Conclusion: Many specific manifestation of SARS can be found on CT. CT is helpful to direct detection and treatment of SARS.