Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Borderline enlargement of the cardiac silhouette is present . Mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Minimal patchy right basilar opacity is new in the interval . Left lung is clear . No pleural effusion or pneumothorax is demonstrated . Mild degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
Minimal patchy right basilar opacity is new in the interval , potentially atelectasis , though early infection is not excluded .