Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is stable moderate cardiomegaly with increased upper zone redistribution , central vascular congestion , and moderate interstitial edema . Atelectasis is noted at the left lung base . No large pleural effusion or pneumothorax . Dual chamber pacer leads and sternal closure hardware is unchanged . No focal consolidation concerning for pneumonia .
    OUTPUT:
    
Moderate cardiomegaly and interstitial edema with no large pleural effusion . Findings are compatible with heart failure .