COVID-19 Pneumonia: Variation of Chest Computed Tomographic Findings at Different Phases of Disease

Objective: We determined the temporal changes on thoracic computed tomography (CT) in patients with Coronavirus disease-2019 (COVID-19) pneumonia, during the disease. Methods: Our sample included 55 patients (29 men, 26 women) who were admitted to our hospital between March 10 and May 10 2020 with COVID-19, diagnosed by reverse-transcription polymerase chain reaction, who underwent at least two CT examinations in our hospital. From the onset of the symptoms, the disease process was divided into six stages, and CT patterns at each stage were analyzed. Additionally, we calculated the CT score by using a semiquantitative method to measure the involvement in all five lung lobes. Results: The most common CT patterns in all stages were ground-glass opacification, crazy-paving pattern, and consolidation. The total CT scores were highest between the 10th and 21st days. This pattern continued similarly for a while later. Residual signs of disease were found in 92% of the patients who underwent CT after the 28th day. Conclusion: CT findings in COVID-19 pneumonia progress in a certain time-dependent pattern. CT findings of the disease is most severe between the 10th and 21st days. Residual disease findings are observed even after 28 days in most patients. [ FROM AUTHOR] Copyright of European Archives of Medical Research is the property of Galenos Yayinevi Tic. LTD. STI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full . (Copyright applies to all s.)