Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Supine AP views of the chest were obtained . Underlying trauma board and other overlying objects partially obscure the image . The lungs are clear bilaterally with no focal consolidation , effusion or pneumothorax . The cardiomediastinal silhouette is normal . No displaced fractures are seen .
    OUTPUT:
    
No acute intrathoracic process .