Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were compared with AP radiograph on ___ . Again seen in cardiomegaly with interstitial edema worsened compared to ___ . Lateral views demonstrate that a left lung base opacity most likely represents a small pleural effusion with associated atelectasis , though infection can not be excluded . Mild patchy opacity is also noted in the right lung base , with a small right pleural effusion . Known left apical ill - defined opacity is redemonstrated .
    OUTPUT:
    
1 . Bibasilar opacities , possibly atelectasis , though infection is not excluded . 2 . Mild interstitial edema , new from ___ , with small bilateral pleural effusions . 3 . Unchanged left apical ill - defined opacity .