Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart is normal in size , and cardiomediastinal contours are unremarkable . Low lung volumes with bibasilar atelectasis . The left hemidiaphragm is not visualized reflecting opacification of the left lower lobe , likely secondary to atelectasis , but in the appropriate clinical context pneumonia should be considered . Interval development of small bilateral pleural effusions . No pneumothorax .
    OUTPUT:
    
1 . Bibasilar atelectasis 2 . Small bilateral effusions 3 . Left lower base opacification , likely atelectasis , but in the appropriate clinical context , pneumonia is possible .