Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hyperinflated bilaterally with no areas of focal consolidation , pleural effusion , mass lesions , or evidence of pneumothorax . There is stable linear calcification seen in the right mediastinum which is unchanged since ___ . The aorta is mildly tortuous and dilated . The heart is of normal size . The pleural surfaces are unremarkable with stable flattening of the hemidiaphragms . There are stable moderate multilevel degenerative changes with large anterior osteophytes .
    OUTPUT:
    
No evidence of malignancy or infection .