Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is persistent mild bibasilar atelectasis . No focal consolidation is seen . There is no large pleural effusion . A large hiatal hernia with air - fluid levels again seen . The cardiac and mediastinal silhouettes are stable . There is mild biapical pleural thickening .
    OUTPUT:
    
Large hiatal hernia . Mild bibasilar atelectasis .