Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate unchanged , slightly prominent contours of the hila . There is unchanged scarring in the left peripheral lung base . The cardiomediastinal silhouette is mildly enlarged , unchanged . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No focal consolidation or pleural effusion .