境外输入性新冠肺炎确诊前的肺部影像学演变特点

Pulmonary Imaging Evolution before the Diagnosis of Imported COVID-19

目的:探讨境外输入性新型冠状病毒肺炎(COVID-19)在确诊前的胸部CT变化及演变特点。方法:采用进行回顾性分析方法,就境外输入性COVID-19患者确诊前不同时段的肺部CT影像进行对比研究。结果:33例患者,确诊前共接受78次CT检查,其中双肺受累27例,右肺受累4例,左肺受累2例。33例患者CT病灶均首发于胸膜下或肺外带。3次不同时段的CT影像,磨玻璃影(93.8%、68.7%、41.7%)、斑片状影(43.7%、68.7%、91.7%)、小叶间隔增厚(12.5%、46.8%、75.0%)、实变/亚实变(3.1%、53.1%、83.3%),与首次CT影像,差异显著(P < 0.05)。结论:境外输入性COVID-19患者确诊前,其肺部影像有一定的演变特点。

Objective: To investigate the changesand evolution of chest CT before diagnosis of imported COVID-19. Methods:Retrospective analysis was performed to compare the lung CT images of importedCOVID-19 patients at different periods before diagnosis. Results: A total of 78CT examinations were performed in 33 patients before diagnosis, including 27cases of bilateral lung involvement, 4 cases of right lung involvement, and 2cases of left lung involvement. The CT lesions of 33 patients were allinitially subpleural or extrapulmonary. CT images of 3 different periods showedground glass shadows (93.8%, 68.7%, 41.7%), patchy shadows (43.7%, 68.7%,91.7%), interlobular septal thickening (12.5%, 46.8%, 75.0%),consolidation/subconsolidation (3.1%, 53.1%, 83.3%). Compared with the first CTimage, the difference was significant (P