Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is borderline enlarged . The mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Minimal atelectatic changes are seen in the lung bases , with no focal consolidation , pleural effusion or pneumothorax identified . Scarring within the lung apices is re - demonstrated . There is no acute osseous abnormality seen .
    OUTPUT:
    
Mild bibasilar atelectasis . No acute fractures are seen , but if there is continued concern for a rib fracture , a dedicated rib series is recommended .