Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Midline sternotomy wires are again noted as well as mediastinal clips . Stable mild cardiomegaly . There is a similar linear opacity in the left mid to lower lung likely representing scarring . The lungs are otherwise clear without signs of pneumonia or edema . A focal eventration of the right hemidiaphragm is noted . Mediastinal contour is normal . No signs of congestion or edema . No pneumothorax .
    OUTPUT:
    
Stable cardiomegaly with stable focus of scarring in the left mid to lower lung . No signs of edema or pneumonia .