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