Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Unchanged chronic prominence of the hila . There is no hyperinflation of the lungs . The cardiomediastinal silhouette is normal . There is no focal lung consolidation . There is no pleural effusion and no pneumothorax . Pleural thickening is seen at the left lung base .
    OUTPUT:
    
No acute cardiothoracic process .