Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph was provided . There are unchanged findings as compared with prior radiograph from three days ago with stable right pleural effusion with probable associated compressive lower lobe atelectasis . There is a small left pleural effusion with subtle increase in left lower lobe consolidation , likely atelectasis . Please note pneumonia can not be excluded . No pneumothorax . Heart size is difficult to assess but appears grossly stable , but mediastinal contour is unremarkable . Bony structures appear intact .
    OUTPUT:
    
Bilateral pleural effusions with lower lobe consolidation is likely atelectasis , though can not exclude pneumonia . Recommend followup to resolution .