Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . There is slight superior retraction of the right pulmonary hilum due to scarring in the right upper lobe . The lungs appear grossly clear bilaterally . Heart size appears within normal limits . The mediastinal contour appears grossly stable . The imaged osseous structures are intact .
    OUTPUT:
    
No signs of pneumonia or CHF . Please refer to subsequent CTA chest for further details .