Radiological features of SARS-CoV2 associated pneumoniain a cohort of patients admitted in COVID Unit

ABSTRACT

Background and Aim of the study A novel coronavirus (SARSCoV2) in 2019 has been recognized as the responsible of an interstitial pneumonia characterized by a severe acute respiratorysyndrome initially reported in China with a subsequent pandemicoutbreak. Aim of this observational retrospective cohort study wasto describe the CT findings of this new disease in a cohort of patients treated in our COVID Unit.Materials and Methods: TC scan of 49 patients with naso-pharyngeal swab confirmed SARS CoV2 pneumonia admitted toCOVID Unit of F. Miulli General Hospital from 19th March 2020 to03rd May 2020 were retrospectively analyzed.Results: The cohort included 49 patients (42 males, 86%;7 female, 14%);mean age 63,2 years (SD 14,8). Radiological findings distribution was bilateral in the whole cohort;peripheralinvolvement was constant (n=46 [93%]), in some cases exclusively subpleural (n=10;20%), with pleuric sparing in few cases(n=7, 14%). 2 patients had central distribution of alterations (4%).The great part of the cohort showed mixed (central/periferic) distribution (n=29 [60%]). Radiological phenotypes were predominant ground-glass (GG) (n=20 [41%]), consolidative (C) (n=3,6%) and mixed pattern (n=23, 47%).Conclusions: SARS-CoV2 is characterized by a wide range of CTfeatures with a frequently mixed presence of ground glass and consolidative with a periferic and central - usually bilateral - distribution. Combining assessment of imaging with clinical and laboratory findings could facilitate early diagnosis of COVID-19.