Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Again seen is a large hiatal hernia , unchanged . There is a right lower lobe opacity which may represent atelectasis . Lung volumes are low . There are tiny if any bilateral pleural effusions . A mid thoracic vertebral compression fracture is unchanged .
    OUTPUT:
    
Large hiatal hernia . Right lower lobe opacity may represent atelectasis . Tiny if any pleural effusions .