Fig. 1

a-d Chest CT scans of the patient before (top row) and after (bottom row) therapy of pneumonia: top row shows ground glass opacities (a, arrow) as a sign for an atypical infection with large pleural effusions (b, *) and lung compression; lower row demonstrates resolving pulmonary infection (c) and only residual pleural effusion (d). A chest tube was inserted to reduce the effusion (c, arrow)