Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low with subtle opacities in the lower lungs thought to represent atelectasis though can not exclude pneumonia in the correct clinical setting . No large effusion or pneumothorax . Cardiomediastinal silhouette is normal . Bony structures are intact .
    OUTPUT:
    
Mild bibasilar opacities likely atelectasis though can not exclude pneumonia in the correct clinical setting .