目的　探讨严重急性呼吸综合征的胸部X线表现。资料与方法　对经确诊的 5 3例严重急性呼吸综合征的X线表现进行回顾性分析。结果　严重急性呼吸综合征的胸部X线表现为两肺大片状或小片状密度增高阴影 (2 7例 ) ;磨玻璃样影 (2 2例 ) ;1侧肺叶或肺段的小片状或斑片状影 (1 9例 ) ;表现肺段内结节影 (3例 )以及两肺间质改变 ,肺纹理增粗 ,呈网格状及不规则线状影 (4例 )。结论　严重急性呼吸综合征的胸部X线表现多种多样 ,如两肺片状影 ,磨玻璃状影 ,呈游走性 ,以及肺纹理增粗、增多 ,呈网状改变。结合临床表现发热、咳嗽、白细胞降低或正常等 ,应考虑严重急性呼吸综合征的可能 Objective To investigate the chest X-ray findings of severe acute respiratory syndrome. Materials and Methods A retrospective analysis of the X-ray findings of 53 confirmed SARS cases was performed. Results The chest X-ray findings of severe acute respiratory syndrome manifested as darker flakes or small dense densities (27 cases), ground glass samples (22 cases), small flakes Or patchy (19 cases); nodules (3 cases) in the segment of pulmonary tuberculosis, interstitial lung mass changes in the two lungs, thickening of the lungs and reticular and irregular linear patterns (4 cases). Conclusions The manifestations of chest X-ray of SARS are various. For example, the two lungs are flaky, the glassy shadow is ghostly, and they are migratory. The lung texture is thick and thick, and the mesh changes. Combined with clinical manifestations of fever, cough, leukopenia or normal, should consider the possibility of severe acute respiratory syndrome