Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . The hilar and mediastinal contours are unchanged since the ___ radiograph . There is no pneumothorax , focal consolidation , or pleural effusion . Linear bibasilar opacities likely reflect atelectasis . A large hiatal hernia demonstrates an air - fluid level .
    OUTPUT:
    
1 . Mild bibasilar atelectasis . 2 . Large hiatal hernia . 3 . No pneumonia .