Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is borderline enlarged . The aorta is mildly unfolded . The mediastinal and hilar contours are unremarkable . Pulmonary vasculature is not engorged . Patchy opacities in the lung bases may reflect atelectasis . No pleural effusion or focal consolidation is present . No pneumothorax is identified . No acute osseous abnormalities seen .
    OUTPUT:
    
Patchy bibasilar opacities may reflect atelectasis .