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 mediastinal clips are again noted related to prior CABG . The heart is mildly enlarged though this is stable . There is no focal consolidation , effusion , or pneumothorax . No definite signs of congestive heart failure . Mediastinal contour is stable . Bony structures are intact . No free air below the right hemidiaphragm . Clips are noted in the upper abdomen .
    OUTPUT:
    
Mild cardiomegaly , without definite signs of pneumonia or CHF .