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COVID-19 肺炎 9 例死亡病例尸检病理发现与影像学特征的相关性。

Correlation of autopsy pathological findings and imaging features from 9 fatal cases of COVID-19 pneumonia.

机构信息

Department of Radiology.

Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology.

出版信息

Medicine (Baltimore). 2021 Mar 26;100(12):e25232. doi: 10.1097/MD.0000000000025232.

Abstract

We aimed to investigate the relationship of radiological features and the corresponding pulmonary pathology of patients with Coronavirus Disease (COVID-19) pneumonia.In this multicenter study, serial chest CT and radiographic images from 9 patients (51-85 years old, 56% male) were reviewed and analyzed. Postmortem lungs were sampled and studied from these autopsies, with a special focus on several corresponding sites based on imaging features.The predominant pattern of pulmonary injury in these 9 cases was diffuse alveolar damage (DAD) and interstitial inflammation. Moreover, acute fibrinous exudates, organization, inflammatory cell infiltration, hyaline membranes, pulmonary edema, pneumocyte hyperplasia, and fibrosis were all observed. The histopathology features varied according to the site and severity of each lesion. In most of the 9 cases, opacities started from a subpleural area and peripheral structures were more severely damaged based on gross views and pathological examinations. Fibrosis could occur in early stages of infection and this was supported by radiological and pathological findings. The radiological features of COVID-19 pneumonia, at the critically ill stage, were diffuse ground-glass opacities with consolidation, interstitial thickening, and fibrous stripes, which was based in the fibrous tissue proliferation in the alveolar and interlobular septa, and filled alveoli with organizing exudation. Fungal and bacterial co-infections were also observed in 6 cases.Typical imaging features can be correlated with underlying pathological findings. Combining assessments of imaging features with pathological findings therefore can enhance our understanding of the histopathological mechanism of COVID-19 pneumonia, and facilitate early radiological diagnosis and prognosis estimation of COVID-19 pneumonia, which has important implications for the development of clinical targeted treatments and research related to COVID-19 pneumonia.

摘要

我们旨在研究新型冠状病毒肺炎(COVID-19)患者的影像学特征与相应肺部病理的关系。在这项多中心研究中,我们对 9 名患者(年龄 51-85 岁,男性占 56%)的连续胸部 CT 和 X 线影像进行了回顾性分析。这些尸检均取自死后肺组织,并进行了研究,重点关注了根据影像学特征确定的几个相应部位。9 例患者的主要肺损伤模式为弥漫性肺泡损伤(DAD)和间质炎症。此外,还观察到急性纤维渗出物、机化、炎症细胞浸润、透明膜、肺水肿、肺泡细胞增生和纤维化。根据每个病变部位和严重程度,组织病理学特征存在差异。在大多数病例中,根据大体观察和病理检查,磨玻璃影从胸膜下区域开始,周边结构损伤更严重。纤维化可能在感染的早期阶段发生,这与影像学和病理学发现相符。在危重症 COVID-19 肺炎阶段,其影像学特征为弥漫性磨玻璃影伴实变、间质增厚和纤维条纹,这与肺泡和小叶间隔纤维组织增生及充满机化渗出物的肺泡有关。6 例还合并了真菌和细菌的混合感染。典型的影像学特征可与潜在的病理学发现相关联。因此,将影像学特征与病理学发现相结合,可提高我们对 COVID-19 肺炎组织病理学机制的认识,并有助于 COVID-19 肺炎的早期放射学诊断和预后评估,这对于 COVID-19 肺炎相关的临床靶向治疗和研究具有重要意义。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3f8e/9282075/5d59b049eb76/medi-100-e25232-g001.jpg

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