Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to recent exam , there has been mild interval clearance of the right middle lobe consolidation and increased opacity in the right hilum are again noted . The left lung is clear . Cardiac silhouette is enlarged but stable . Prosthetic aortic valve is again noted . Median sternotomy wires and mediastinal clips are noted . No acute osseous abnormalities .
    OUTPUT:
    
Slight interval improvement in the opacity in the right middle lobe when compared to prior although opacity persists as well as right hilar enlargement . Followup , again , will be necessary .