Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright view of the chest was provided . Midline sternotomy wires , mediastinal clips , and AICD appear unchanged in position . The heart remains mildly enlarged . There is no focal consolidation , effusion or pneumothorax . There are no overt signs of edema . Bony structures are intact . Mediastinal contour is stable .
    OUTPUT:
    
No pneumonia or overt edema . Stable mild cardiomegaly .