Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . The mediastinal contours are unremarkable . There is mild pulmonary vascular engorgement with cephalization , as well as development of small bilateral pleural effusions , new in the interval . Right basilar opacity could reflect atelectasis though infection is difficult to exclude . Left basilar atelectasis is also likely present . No pneumothorax is identified and there are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary vascular congestion with small bilateral pleural effusions . Bibasilar airspace opacities could reflect atelectasis though infection is difficult to exclude .