Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , resulting in bronchovascular crowding . The heart is mildly enlarged . There is bibasilar atelectasis . No pneumothorax or pleural effusion . Known intra-abdominal free air is better assessed on CT of the abdomen pelvis dated ___ .
    OUTPUT:
    
Known intra-abdominal free air is better assessed on CT abdomen pelvis dated ___ .