Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . There is mild unfolding of the thoracic aorta . Hilar contours are unremarkable . Lungs are clear except for left base atelectasis . There are trace bilateral pleural effusions . There is no pneumothorax . The osseous structures are grossly unremarkable .
    OUTPUT:
    
Trace bilateral pleural effusions . No focal consolidation worrisome for pneumonia .