Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs appear relatively hyperexpanded , with increased lucency and attenuation of vessels in the upper lobes . No focal areas of consolidation are evident in either lung , and there are no pleural effusions . The heart is not enlarged , and mediastinal and hilar contours are normal .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Hyperexpanded lungs with attenuation of upper lobe vessels , a finding that can be seen in the setting of emphysema . These imaging findings overlap with other disorders such as asthma . If the diagnosis is in doubt clinically , consider high - resolution chest CT and pulmonary function testing for more complete evaluation .