Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Midline sternotomy wires are unchanged . The pacers / defibrillating improved projecting over the left chest with leads in the right ventricle . The heart size is enlarged , similar to prior studies . The lungs demonstrate no consolidation , but mild interstitial edema . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
Stable cardiomegaly and interstitial edema compatible with continued heart failure .