Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . No free air below the right hemidiaphragm is seen . The heart is top normal in size , but stable . The lungs appear essentially clear bilaterally , though bronchovascular crowding limits the evaluation in the lower lungs . Mediastinal contour is stable . Bony structures are intact .
    OUTPUT:
    
Top normal heart size . No free air below the right hemidiaphragm .