Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low inspiratory volumes . Cardiomediastinal silhouette is unchanged . There is upper zone redistribution with mild vascular blurring , consistent with mild CHF . There is bibasilar bibasilar atelectasis , overall similar to prior . No gross effusion . No pneumothorax detected status post removal of right chest tube . Spinal fusion construct again noted .
    OUTPUT:
    
Suspect mild CHF . Status post removal of right chest tube . No pneumothorax or gross effusion identified . Bibasilar patchy opacities , presumably atelectasis , again noted , similar to prior .