Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette and hilar contours are normal . Stable post - surgical changes are noted in the right mid lung . Lungs are otherwise clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process ; specifically , no evidence of pneumonia or pulmonary fibrosis .