Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are normal . Pulmonary vasculature is normal . No focal consolidation , pleural effusion or pneumothorax is identified . Minimal streaky bibasilar opacities likely reflect atelectasis . Previously demonstrated pulmonary nodules on CT are not visualized on the current exam . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild bibasilar atelectasis .