Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP and lateral views of the chest provided . Midline sternotomy wires again noted . The heart remains mildly enlarged . The mediastinal contour remains widened due to an unfolded thoracic aorta . There is hilar congestion and mild interstitial pulmonary edema . No large effusions are seen . Bony structures are intact .
    OUTPUT:
    
Stable mild cardiomegaly with mild edema .