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　　Evidence before this study

　　Before this study, we searched PubMed, Medline, and Google Scholar on Jan, 24, 2020, for articles describing the radiological features of patients infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2; previously known as 2019 novel coronavirus [2019-nCoV]), using the search terms “novel coronavirus” or “2019-nCoV” and “radiology “or “imaging” or “CT”, with no time restrictions. We also searched CNKI and Wanfang Data using the same terms in Chinese, with no time restrictions. We found only previously published research discussing the radiological characteristics of severe acute respiratory syndrome coronavirus or Middle East respiratory syndrome coronavirus, and preliminary studies on the evolution of SARS-CoV-2 in Wuhan. We found no published work about the radiological characteristics of patients with pneumonia caused by SARS-CoV-2 infection.

https://doi.org/10.1016/S1473-3099(20)30086-4