Severe organising pneumonia following COVID-19.

Various forms of diffuse parenchymal lung disease have been proposed as potential consequences of severe COVID­19. We describe the clinical, radiological and histological findings of patients with COVID­19-associated acute respiratory distress syndrome who later developed severe organising pneumonia including longitudinal follow-up. Our findings may have important implications for the therapeutic modalities in the late-phase of severe COVID­19 and might partially explain why a subgroup of COVID­19 patients benefits from systemic corticosteroids.