Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy , coronary artery stenting , and CABG . The heart is moderately enlarged . The mediastinal contours are unremarkable . Minimal cephalization of the pulmonary vascular markings is noted , suggestive of mild congestion . Small right pleural effusion is present . Streaky bibasilar opacities likely reflect atelectasis . No pneumothorax is visualized . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
Mild pulmonary vascular engorgement and small right pleural effusion . Mild bibasilar atelectasis .