Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated and grossly clear . The hilar contours , and pleural surfaces are within normal limits . Right heart border prominent but unchanged . Aorta slightly unfolded . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute pulmonary process . Possible slight prominence of the right heart border .