Evaluation of lung volume loss with 3D CT volumetry in COVID-19 patients
Makaleler > Tam Makale · 2020
Yazarlar: Recep SAVAŞ, Ayşegül Öz Özcan
Diagnostic and Interventional Radiology, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Wos, 2020, cilt 27, ss 155-156
Özet
The standard test for the assessment of coronavirus disease 2019 (COVID-19) is the reverse-transcription polymerase chain reaction (RT-PCR) testing.Chest computed tomography (CT) is recommended for severe cases as a complementary diagnostic tool for staging COVID-19 pneumonia in progressive disease or if any complication is suspected during the follow-up (1, 2).Most common CT findings of COVID-19 pneumonia include multifocal and bilateral ground-glass opacities (GGOs) and/or consolidation in the peripheral, posterior, and lower lobes of the lungs.Halo or reverse halo sign, vascular enlargement, crazy-paving pattern, pleural thickenings, pleural effusion, and subpleural lines are less common CT findings (3, 4).In most cases, the disease and CT findings are mild and moderate and heal completely, but severe cases may develop acute respiratory distress syndrome or pulmonary fibrosis, and lung volume loss (5-7).In particular, lung volume is determined by the elastic forces of the lung parenchyma and surrounding tissues, alveolar surface tension, respiratory muscle strength, lung reflexes, and airway structure (8).The etiology of lung volume loss can be listed as follows: airway obstruction or compression, obesity, scoliosis, restrictive diseases such as pulmonary fibrosis and interstitial lung disease, tuberculosis, sarcoidosis, pleural effusions, rib injury (fractures or diaphragm paralysis), and heart failure, among others (9).The volume loss findings in COVID-19 cases have begun to emerge with the recent literature data.Notably, consolidated and/or collapsed parts of the lungs lead to a reduction in lung volume, which is considered to be one of the pneumonic presentations of COVID-19 (10).In our opinion, the loss of volume in patients with COVID-19 may be explained as follows: a) destruction of type II epithelial