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. 2020 Jun 24;13(8):1792–1808. doi: 10.1016/j.jcmg.2020.05.017

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© 2020 by the American College of Cardiology Foundation. Published by Elsevier.

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Computed Tomographic Features and Staging of COVID-19 Pneumonia

The early stage (A) of typical COVID-2019 pneumonia is characterized by small subpleural ground-glass opacities (box), which then rapidly increase in number and develop into crazy paving pattern during the progressive stage (B). In the peak stage (C), dense consolidation becomes the most frequent finding. During the absorption stage (D), when the disease has a favorable course, consolidation areas are gradually absorbed, with residual subpleural fibrotic parenchymal bands (arrows).