Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear and well expanded bilaterally with no mass lesions or areas of focal consolidation concerning for pneumonia . There is no pleural effusion or pneumothorax . Cardiomediastinal silhouette is stable and within normal limits . The pleural surfaces and osseous structures are unremarkable .
    OUTPUT:
    
No evidence of infection or malignancy .