Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are stable in appearance . Enlargement of hila is consistent with a combination of enlarged pulmonary arteries and right hilar lymph node enlargement as demonstrated on recent CT . Lungs are overinflated , but demonstrate no focal areas of consolidation . Postoperative changes in right hemithorax related to previous lobectomy are stable .
    OUTPUT:
    
No evidence of pneumonia .