Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Low lung volumes are present . The cardiac silhouette size remains moderately enlarged . There is crowding of the bronchovascular structures , with mild pulmonary vascular engorgement . No focal consolidation or pleural effusion is present . There is no pneumothorax . Diffuse calcification of the thoracic aorta is visualized , unchanged mediastinal and hilar contours . No acute osseous abnormality is seen , though degenerative changes of the right glenohumeral and acromioclavicular joint are noted .
    OUTPUT:
    
Mild pulmonary vascular engorgement .