Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided demonstrate diffuse pulmonary opacity involving the mid to lower lung , superimposed on a background of interstitial lung disease . No large effusion is seen . No pneumothorax is present . Heart size appears grossly unremarkable , though difficult to visualize on the lateral view . Mediastinal contour is normal . Bony structures are intact .
    OUTPUT:
    
Findings concerning for pulmonary fibrosis with superimposed pneumonia in the mid-to - lower lungs . Followup to resolution is advised .