Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is probable background hyperinflation . There is moderate to moderately severe cardiomegaly , with fullness of the hila , similar to the prior study . There is upper zone redistribution and interstitial edema , consistent with CHF . There is patchy opacity at both lung bases . No gross effusion .
    OUTPUT:
    
1 . Cardiomegaly and interstitial edema . 2 . Left lower lobe collapse and / or consolidation . 3 . Patchy opacity right cardiophrenic region , similar to the prior film . This likely reflects atelectasis , been early infectious infiltrate would be difficult to exclude .