Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post coronary artery bypass graft surgery . The heart is mildly enlarged . There is soft tissue fullness in the aortopulmonary window , suspected to be post-operative or due to a confluence of shadows . Otherwise , the mediastinal and hilar contours are unremarkable . The lungs appear clear . There are no pleural effusions or pneumothorax . Small - to - moderate anterior flowing osteophytes are noted along the mid - to - lower thoracic spine .
    OUTPUT:
    
1 . No evidence of acute disease . 2 . Soft tissue fullness in the aortopulmonary window , probably artifactual or post-operative . However , when clinically appropriate , standard PA and lateral radiographs are recommended with optimal inspiration in order to reassess when possible clinically . Correlation with prior radiographs , if available , could also be helpful .