Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mildly enlarged . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Patchy opacities are demonstrated in both lung bases . No focal consolidation pleural effusion or pneumothorax is present .
    OUTPUT:
    
Patchy bibasilar opacities , likely atelectasis . Infection is not completely excluded in the correct clinical setting .