Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded bilaterally with no areas of focal consolidation , mass lesions , pleural effusion . There is no pneumothorax . Cardiomediastinal silhouette is within normal limits . The pleural surfaces are unremarkable .
    OUTPUT:
    
Normal chest radiograph . No evidence of malignancy or infection .