Imaging related to underlying immunological and pathological processes in COVID-19

Diffuse reversed halo sign in an immunocompetent patient

“…During the Covid-19 pandemic, it was often considered that the viral infection manifests on chest CT as ground-glass opacities or crazy paving, but in mild to severe forms, it was observed that radiological features of Covid-19 may also include traction bronchiectasis within the areas of ground-glass opacities, reticular thickening and subpleural bands formation, halo sign, or reversed halo sign [ 14 ].…”