Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are relatively hyperinflated . Linear left base atelectasis / scarring is seen . There is also a relative linear opacity projecting over the lateral right upper lung which may be due to scarring , however , this could be further assessed on dedicated chest CT . There is no pleural effusion . The cardiac silhouette is mildly enlarged . The aorta is calcified and tortuous . No evidence of free air is seen beneath the diaphragm .
    OUTPUT:
    
Left base atelectasis / scarring . Relative linear opacity projecting over the lateral right upper lung may be due to scarring , however , this could be further assessed on dedicated chest CT . No evidence of free air beneath the diaphragm .