Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Overlying EKG leads are present . Left left basal opacities most compatible with atelectasis though difficult to exclude a subtle early pneumonia / aspiration . No large effusion or pneumothorax . Cardiomediastinal silhouette appears stable . Bony structures are intact .
    OUTPUT:
    
Left basal opacity most compatible with atelectasis though difficult to exclude an early pneumonia / aspiration .