Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . There are slightly asymmetric reticular opacities in the right middle lobe . There is no focal airspace consolidation , effusion or pneumothorax . Cardiac and mediastinal contours are normal .
    OUTPUT:
    
Slight asymmetric interstitial opacities in the right middle lobe which could reflect subtle pneumonia or may be the result of overlying breast tissue .