Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear and well expanded bilaterally with no areas of focal consolidation , lesions , masses , pleural effusion , or evidence of pneumothorax . The cardiomediastinal silhouette is within normal limits . The pleural surfaces are unremarkable . No abnormalities in the osseous structures are identified .
    OUTPUT:
    
Normal chest radiograph . No evidence of infection or malignancy .