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 at the upper limits of normal size . The mediastinal and hilar contours are unremarkable . There is a lobular soft tissue focus along the diaphragmatic inlet . Possibilities include a hiatal hernia or potentially an aneurysm of the aorta . The lungs appear clear . There are no pleural effusions or pneumothorax .
    OUTPUT:
    
1 . No evidence of acute disease . 2 . Prominent soft tissue region at the diaphragmatic inlet . A hiatal hernia could be considered versus an aortic aneurysm . Evaluation with standard PA and lateral radiographs is recommended when clinically feasible to evaluate further .