Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is marked poly chamber cardiomegaly and prominence of the main pulmonary artery . There is upper zone redistribution thickening of the minor fissure and a small right and possible very small left effusion . There is some patchy increased retrocardiac opacity similar to the prior film . There is patchy opacity at the right base , which is more pronounced than on the ___ study and which partially obscures the heart border on today 's exam .
    OUTPUT:
    
1 . Marked poly chamber cardiomegaly and prominence of the main pulmonary artery , similar to ___ . Note is made that the abdominal CT from ___ showed evidence of a left ventricular apical aneurysm and a pericardial effusion . 2 . Findings consistent with CHF with interstitial edema and small right - greater - than - left effusions . 3 . Bibasilar atelectasis . In the appropriate clinical setting , a pneumonic infiltrate would be difficult to exclude .