Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Midline sternotomy wires and metallic closure devices are present . The heart remains moderately enlarged . There is central congestion without frank edema . No large effusion or pneumothorax . No convincing signs of pneumonia . Bony structures are intact .
    OUTPUT:
    
Stable cardiomegaly with central congestion .