Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Overlying EKG leads are present . Midline sternotomy wires and mediastinal clips are in place . The heart is mildly enlarged , similar to prior exam . No focal consolidation , large effusion or pneumothorax . There is an azygous fissure noted . Mediastinal contour is normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Mild cardiomegaly unchanged . No overt signs of edema or pneumonia .