传染性非典型肺炎的影像表现

目的 探讨传染性非典型肺炎(世界卫生组织又称其为严重呼吸综合征，SARS)的X线表现及变化规律。方法 回顾性分析临床诊断的61例SARS患，对发病后的一系列胸片和CT影像进行统计分析。结果 患均以发热为最早起病症状，88％患在起病1周内肺部出现局灶性斑片状模糊影，并迅速扩大。2周内病变达高峰，有57％患两肺大部分肺野受累，病情重。84％患在5周内肺部阴影逐渐消散。在16例恢复期患的CT扫描中，有13例显示肺部遗留纤维化病灶。有6例患合并感染，病期延长，4例死亡。结论 SARS早期出现肺部炎性改变，发展迅速，大部分两肺受累，重症比例高，易致肺纤维化。

Roentgenography and CT appearance in patients with severe acute respiratory syndrome

Objective To evaluate the appearance and dynamic change of chest roentgenography and CT in patients with severe acute respiratory syndrome (SARS). Methods Serial roentgenography and CT of 61 confirmed SARS patients were analyzed. Results The onset symptom was fever in all patients. In the early phase of SARS, the main abnormal appearance was single or bilateral localized patchy clouding opacity on roentgenography, which progressed rapidly. The area of opacity peaked at about 2 weeks, involving the majority area of the lung in 57% of the patients. The area involved was correlated with the severity of clinical symptoms. The opacity disappeared gradually in 5 weeks in 84% of the patients. Lungs complicated infection were found in 6 patients with a prolonged duration of the illness. Among the 61 patients, 4 died. CT scan was performed in 16 SARS patients in the recovery phase, of whom 13 showed lung fibrosis. Conclusions Lung infiltration in early phase develops rapidly and involves most area of the lung in advanced phase in most SARS patients. Lungs fibrosis was found in some patients in the recovery phase.