Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal contours are unremarkable . There is mild pulmonary edema . Small bilateral pleural effusions , left greater than right are new compared to the prior exam . Bibasilar airspace opacities may reflect atelectasis though aspiration or infection can not be excluded . There is no pneumothorax . No acute osseous abnormalities are visualized .
    OUTPUT:
    
Mild pulmonary edema and small bilateral pleural effusions . Bibasilar airspace opacities could reflect atelectasis though infection or aspiration can not be excluded .