Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Subtle reticular opacities in the periphery of the lungs are better characterized on prior CT and may reflect background pulmonary fibrosis . No superimposed consolidation , large effusion or pneumothorax is seen . The heart appears top normal in size . The mediastinal contour appears normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Top normal heart size with mild pulmonary fibrosis . No superimposed pneumonia .