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24.03.2020 | Diagnostik in der Infektiologie | Chest Zur Zeit gratis

Coronavirus disease 2019: initial chest CT findings

Zeitschrift:
European Radiology
Autoren:
Zhiming Zhou, Dajing Guo, Chuanming Li, Zheng Fang, Linli Chen, Ran Yang, Xiang Li, Wenbing Zeng
Wichtige Hinweise

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Abstract

Objectives

To systematically analyze CT findings during the early and progressive stages of natural course of coronavirus disease 2019 and also to explore possible changes in pulmonary parenchymal abnormalities during these two stages.

Methods

We retrospectively reviewed the initial chest CT data of 62 confirmed coronavirus disease 2019 patients (34 men, 28 women; age range 20–91 years old) who did not receive any antiviral treatment between January 21 and February 4, 2020, in Chongqing, China. Patients were assigned to the early-stage group (onset of symptoms within 4 days) or progressive-stage group (onset of symptoms within 4–7 days) for analysis. CT characteristics and the distribution, size, and CT score of pulmonary parenchymal abnormalities were assessed.

Results

In our study, the major characteristic of coronavirus disease 2019 was ground-glass opacity (61.3%), followed by ground-glass opacity with consolidation (35.5%), rounded opacities (25.8%), a crazy-paving pattern (25.8%), and an air bronchogram (22.6%). No patient presented cavitation, a reticular pattern, or bronchial wall thickening. The CT scores of the progressive-stage group were significantly greater than those of the early-stage group (p = 0.004).

Conclusions

Multiple ground-glass opacities with consolidations in the periphery of the lungs were the primary CT characteristic of coronavirus disease 2019. CT score can be used to evaluate the severity of the disease. If these typical alterations are found, then the differential diagnosis of coronavirus disease 2019 must be considered.

Key Points

Multiple GGOs with consolidations in the periphery of the lungs were the primary CT characteristic of COVID-19.
The halo sign may be a special CT feature in the early-stage COVID-19 patients.
Significantly increased CT score may indicate the aggravation of COVID-19 in the progressive stage.

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