Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette and unchanged hyperinflated lungs which are clear . Right greater than left apical scarring is unchanged . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of pneumonia . Unchanged hyperinflated lungs with right greater than left apical scarring .