In a new article published March 17 in the journal Radiology: Cardiothoracic Imaging, researchers studied CT imaging data from passengers and crew aboard the Diamond Princess cruise ship and documented a high incidence of subclinical CT changes in patients with COVID-19.
This retrospective study comprised 112 cases (mean age, 62 years ± 16, range 25-93) with COVID-19 infection confirmed with RT-PCR. CT images were reviewed, and the CT severity score was calculated for each lobe and the entire lung. CT findings were compared between asymptomatic and symptomatic cases.
Results showed that of 112 cases, 82 (73%) were asymptomatic, 44 (54%) of which had pneumonic changes on CT. Thirty (27%) cases were symptomatic, 24 (80%) of which had abnormal CT findings. Symptomatic cases showed lung opacities and airway abnormalities on CT more frequently than asymptomatic cases. Asymptomatic cases showed more ground glass opacity predominance over consolidation.
“In this study, we investigated the chest CT findings in laboratory-confirmed COVID-19 cases in an environmentally homogenous cohort of cruise ship passengers and crew members, comparing the CT characteristics of asymptomatic and symptomatic cases,” the authors wrote. “Noticeably, we found lung parenchymal changes on CT in up to 54% of the asymptomatic cases.”
For more information, visit: “Chest CT Findings in Cases from the Cruise Ship ‘Diamond Princess’ with Coronavirus Disease 2019 (COVID-19).”
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Study Investigates Diamond Princess Cruise Ship COVID-19 Findings. Appl Radiol.