Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Large hiatal hernia is re - demonstrated with associated bibasilar atelectasis . Trace left pleural effusion is likely present . Heart size remains mildly enlarged . The mediastinal and hilar contours are unchanged . There is no pulmonary edema , new focal consolidation , or pneumothorax . No acute osseous abnormalities detected . No subdiaphragmatic free air is present .
    OUTPUT:
    
Re - demonstration of large hiatal hernia with bibasilar atelectasis . Trace left pleural effusion . No subdiaphragmatic free air .