Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is within normal limits . The hilar contours are normal . Lung volumes are well expanded and clear . No focal consolidation concerning for pneumonia is identified . There are no pleural effusions or pneumothorax . There are severe degenerative changes along the lower thoracic spine .
    OUTPUT:
    
No radiographic evidence of an acute cardiopulmonary process .