Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . There is mild unfolding of the thoracic aorta . The mediastinal and hilar contours appear unchanged . The patient is status post coronary artery bypass graft surgery . ___ Kerley B lines suggest mild congestive changes , but without frank congestive heart failure . Streaky left posterior basilar opacity appears unchanged and suggests minor atelectasis or scarring . The lungs are hyperinflated .
    OUTPUT:
    
Findings suggesting slight pulmonary congestion . Streakly left basilar opacity suggesting minor atelectasis . Hyperinflation .