Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are present . Persistent moderate - to - severe cardiomegaly is again noted . The mediastinal contours are unchanged , with tortuosity of the thoracic aorta again noted . Fullness of the right paratracheal stripe is also unchanged , and may be due to mediastinal fat deposition , but is longstanding . There is mild pulmonary vascular congestion . Persistent bibasilar airspace opacities are noted , left worse than right , which could reflect atelectasis . Small bilateral pleural effusions are present . There is an elevation of the right hemidiaphragm . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary vascular congestion with small bilateral pleural effusions . Bibasilar airspace opacities may reflect atelectasis .