Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are decreased compared to the prior study from ___ , with elevation of the minor fissure , which contains either a small amount of fluid or is thickened . There are moderate bilateral pleural effusions , difficult to quantify but likely increased , although decreased lung volumes are a confounding factor in evaluating for change . Bibasilar associated parenchymal opacities could represent compressive atelectasis , although concomitant infection in either lung base is not excluded . There is pulmonary vascular congestion without frank interstitial edema . The heart size is difficult to assess but appears moderately enlarged . The mediastinal contours are unchanged , with widening of the mediastinum attributable to known dilatation of the thoracic aorta . Midline sternotomy wires are intact . Scattered mediastinal clips are again seen . Multilevel degenerative changes of the thoracolumbar spine are noted .
    OUTPUT:
    
1 . Low lung volumes with persistent moderate bilateral pleural effusions , probably increased somewhat but difficult to quantify . Pleural effusions could be better assessed with decubitus views if needed clinically . 2 . Bibasilar lower lung opacities , possibly secondary to compressive atelectasis , although concomitant infection in either lung base is not excluded .