Fig. 1

CT scans of the chest. a CT Scan of the chest on first day of presentation demonstrating bilateral centrilobular opacities, hilar/mediastinal lymphadenopathy, moderate cardiomegaly, a trivial pericardial effusion and enlargement of the main pulmonary artery. b Prone CT chest on day 7 of admission, revealing persistent intra-alveolar opacities with associated mediastinal lymphadenopathy