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. 2020 Jul 10;99(28):e21240. doi: 10.1097/MD.0000000000021240

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Copyright © 2020 the Author(s). Published by Wolters Kluwer Health, Inc.

This is an open access article distributed under the Creative Commons Attribution License 4.0 (CCBY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Chest computed tomography (CT) images showing cavitary changes in the inner anterior basal segment of the left lower lobe. (A) A CT image obtained on February 20, 2020 showing the ground glass opacities in the lungs. (B) Compared with the CT image obtained on February 20, 2020, the chest CT image of February 23, 2020 showing a new cavity with a partition in the anterior basal segment of the left lower lobe with a size of 15.0 × 13.0 mm (arrow). (C) A chest CT image showing that the anterior basal cavity in the left lower lobe is slightly reduced, with a size of 12.0 × 11.0 mm (arrow). (D) A chest CT image obtanined on March 1^st showing that the anterior basal cavity in the lower left lobe is further reduced, the size is 11.0 × 10.0 mm, and liquid-gas level appears (arrow). (E) A chest CT image obtained on March 17^th showing the cavity in the inner anterior basal segment of the left lower lobe was disappeared.