Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Bibasilar atelectasis is better assessed on same - day CT abdomen pelvis . No large effusion or pneumothorax . No overt signs of edema . The heart size is within normal limits . The thoracic aorta appears unfolded . No bony injuries .
    OUTPUT:
    
Bibasilar atelectasis . No pneumonia .