Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate enlargement of the cardiac silhouette is unchanged . The mediastinal and hilar contours are similar with mild tortuosity of thoracic aorta appearing unchanged . Pulmonary vasculature is not engorged . No focal consolidation , pleural effusion or pneumothorax is present . Patchy opacities noted in the lung bases bilaterally , more so on the right . Cervical spinal fusion hardware is incompletely imaged . No acute osseous abnormalities detected .
    OUTPUT:
    
Patchy bibasilar airspace opacities , more so on the right , may reflect atelectasis , though infection is not excluded in the correct clinical setting .