Computed tomography (CT) of the chest is one of the main diagnositic tools for coronavirus disease 2019 (COVID-19) infection. To document the chest CT findings in patients with confirmed COVID-19 and their association with the clinical severity, we searched related literatures through PubMed, MEDLINE, Embase, Web of Science (inception to May 4, 2020) and reviewed reference lists of previous systematic reviews. A total of 31 case reports (3768 patients) on CT findings of COVID-19 were included. The most common comorbid conditions were hypertension (18.4%) and diabetes mellitus (8.3%). The most common symptom was fever (78.7%), followed by cough (60.2%). It took an average of 5.6 days from symptom onset to admission. The most common chest CT finding was vascular enlargement (84.8%), followed by ground-glass opacity (GGO) (60.1%), air-bronchogram (47.8%), and consolidation (41.4%). Most lung lesions were located in the lung periphery (72.2%) and involved bilateral lung (76%). Most patients showed normal range of laboratory findings such as white blood cell count (96.4%) and lymphocyte (87.2%). Compared to previous published meta-analyses, our study is the first to summarize the different radiologic characteristics of chest CT in a total of 3768 COVID-19 patients by compiling case series studies. A comprehensive diagnostic approach should be adopted for patients with known COVID-19, suspected cases, and for exposed individuals.

中文翻译：

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COVID-19 的胸部 CT 异常：系统评价。

胸部计算机断层扫描 (CT) 是 2019 年冠状病毒病 (COVID-19) 感染的主要诊断工具之一。为了记录确诊 COVID-19 患者的胸部 CT 结果及其与临床严重程度的关联，我们通过 PubMed、MEDLINE、Embase、Web of Science（成立至 2020 年 5 月 4 日）检索了相关文献，并回顾了以往系统性评论。共纳入 31 份关于 COVID-19 的 CT 结果的病例报告（3768 名患者）。最常见的合并症是高血压（18.4%）和糖尿病（8.3%）。最常见的症状是发烧（78.7%），其次是咳嗽（60.2%）。从出现症状到入院平均需要 5.6 天。最常见的胸部 CT 发现是血管增大 (84.8%)，其次是磨玻璃影 (GGO) (60.1%)，支气管充气征 (47. 8%) 和整合 (41.4%)。大多数肺部病变位于肺外周（72.2%）并累及双肺（76%）。大多数患者表现出正常范围的实验室检查结果，如白细胞计数（96.4%）和淋巴细胞（87.2%）。与之前发表的荟萃分析相比，我们的研究首次通过汇编病例系列研究总结了总共 3768 名 COVID-19 患者的胸部 CT 的不同放射学特征。对于已知 COVID-19 的患者、疑似病例和暴露者，应采用综合诊断方法。与之前发表的荟萃分析相比，我们的研究首次通过汇编病例系列研究总结了总共 3768 名 COVID-19 患者的胸部 CT 的不同放射学特征。对于已知 COVID-19 的患者、疑似病例和暴露者，应采用综合诊断方法。与之前发表的荟萃分析相比，我们的研究首次通过汇编病例系列研究总结了总共 3768 名 COVID-19 患者的胸部 CT 的不同放射学特征。对于已知 COVID-19 的患者、疑似病例和暴露者，应采用综合诊断方法。