Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , which exaggerates the heart size which is top normal . Mediastinal and hilar contours are unchanged , with calcification of the aortic arch re - demonstrated . There is crowding of the bronchovascular structures , with mild pulmonary vascular congestion , but no overt pulmonary edema . Patchy bibasilar airspace opacities likely reflect atelectasis . There is no focal consolidation . Minimal blunting of the costophrenic angles posteriorly indicate trace bilateral pleural effusions . No pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes with mild pulmonary vascular congestion and trace bilateral pleural effusions . Bibasilar atelectasis .