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. 2020 Aug 4;75(11):804–810. doi: 10.1016/j.crad.2020.07.019

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© 2020 The Royal College of Radiologists. Published by Elsevier Ltd. All rights reserved.

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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Embolisms in the lobar, segmental, and subsegmental pulmonary arteries in three COVID-19 patients. (a) CT pulmonary angiogram of a 74-year-old man with D-Dimer level >800 ng/ml on admission reveals thrombus (arrow) in the right lobar pulmonary artery for the inferior lobe. (b,c) A 63-year-old man on day 23 after admission and D-dimer level of 15,662 ng/ml. CT pulmonary angiogram reveals pulmonary thrombus (arrow) in the right segmental pulmonary artery for the basal pyramid, bilateral pleural effusion with atelectasis, consolidations in the posterior segments of the inferior lobes (gravitational segments), and ground-glass opacities in the anterior segments (anti-gravitational segments), consistent with acute respiratory distress syndrome. (d,e) A 79-year-old man on day 1 after admission and D-dimer level of 54,158 ng/ml with pulmonary thrombus (arrow) in the subsegmental pulmonary artery for the postero-basal segment of the left inferior lobe, bilateral pleural effusion with consolidations and pneumothorax on the right side.