Background: Pneumonia is the main manifestation of coronavirus disease 2019 (COVID-19) infection. Chest computed tomography is recommended for the initial evaluation of the disease; this technique can also be helpful to monitor the disease progression and evaluate the therapeutic efficacy. Aim: To review the currently available literature regarding the radiological follow-up of COVID-19-related lung alterations using the computed tomography scan, to describe the evidence about the dynamic evolution of COVID-19 pneumonia and verify the potential usefulness of the radiological follow-up. Methods: We used pertinent keywords on PubMed to select relevant studies; the articles we considered were published until October 30, 2020. Through this selection, 69 studies were identified, and 16 were finally included in the review. Results: Summarizing the included works' findings, we identified well-defined stages in the short follow-up time frame. A radiographic deterioration reaching a peak roughly within the first 2 wk; after the peak, an absorption process and repairing signs are observed. At later radiological follow-up, with the limitation of little evidence available, the lesions usually did not recover completely. Conclusion: Following computed tomography scan evolution over time could help physicians better understand the clinical impact of COVID-19 pneumonia and manage the possible sequelae; a longer follow-up is advisable to verify the complete resolution or the presence of long-term damage.
Review on radiological evolution of COVID-19 pneumonia using computed tomography / Casartelli, Chiara; Perrone, Fabiana; Balbi, Maurizio; Alfieri, Veronica; Milanese, Gianluca; Buti, Sebastiano; Silva, Mario; Sverzellati, Nicola; Bersanelli, Melissa. - In: WORLD JOURNAL OF RADIOLOGY. - ISSN 1949-8470. - 13:9(2021), pp. 294-306-306. [10.4329/wjr.v13.i9.294]
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