Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . The lungs are hyperinflated with mild flattening of the diaphragms . Mild elevation of the left hilum , with poorly defined left upper lung opacities . Similar but less severe changes in the right upper lobe , are associated with a mildly enlarged right hilum . The pleural surfaces are smooth without , pleural effusion or pneumothorax . Mild calcification of the aortic knob is seen .
    OUTPUT:
    
No acute cardiopulmonary pathology . Elevated hila , with biapical opacities , and enlarged right hilum , may relate to prior infection . Recommended comparison with prior imaging studies , if unavailable a chest CT is recommended for further evaluation . Findings added to radiology critical findings dashboard .