Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Mediastinal contours , hila , and cardiac silhouette are normal . The aorta is tortuous . There is no pleural effusion or pneumothorax . No osseous abnormality identified within limits of plain radiography .
    OUTPUT:
    
No pneumonia or evidence of traumatic injury within the limits of plain radiography .