Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette . Lung volumes are low , but the lungs are clear . There is no effusion or pneumothorax .
    OUTPUT:
    
Normal chest radiograph . A preliminary read was provided via telephone by ___ , MD , to the office of ___ , NP . A message was left with ___ at ___ on ___ .