Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette . There is unchanged subtle chronic scarring of the lungs , which are otherwise clear without focal consolidation or pulmonary edema . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . No focal consolidation concerning for pneumonia . 2 . Unchanged subtle chronic scarring .