Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Midline sternotomy wires and prosthetic cardiac valve are again seen . The heart remains mildly enlarged . The lungs are clear bilaterally . No pneumothorax or effusion . Mediastinal contour is stable . Bony structures are intact . Abandoned epicardial pacing wires are seen along the anterior chest wall .
    OUTPUT:
    
Stable mild cardiomegaly . Otherwise unremarkable .