Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The aorta is tortuous . The heart is enlarged . The hilar contours are within normal limits . Linear opacity at the left lung base , likely reflects scarring . There is mild atelectasis at the right lung base . Lungs are hyperinflated suggesting underlying emphysema but are otherwise clear . There is no focal consolidation , pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process .