Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Lung volumes are low with chronic interstitial opacity likely reflective of chronic interstitial lung disease with evidence of mild interval progression . Correlation with high - resolution chest CT may be helpful to further assess . The possibility of a superimposed atypical pneumonia is impossible to exclude given the underlying interstitial opacities . No large effusion or pneumothorax is seen . The heart and mediastinal contour appear overall stable . The bony structures are intact . No free air is seen below the right hemidiaphragm .
    OUTPUT:
    
Progression of interstitial opacities compatible with chronic fibrosis . Consider high - resolution chest CT to further assess . Please note , due to the presence of interstitial opacity the possibility of an atypical superimposed pneumonia is impossible to exclude .