Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well inflated and clear bilaterally with no evidence of masses , lesions , pleural effusions or pneumothorax . The cardiomediastinal silhouette is within normal limits . Hila are unremarkable with no evidence of adenopathy . Pleural surfaces are unremarkable . No osseous abnormalities are identified .
    OUTPUT:
    
No evidence of infection or malignancy ; however , pneumonia can be radiographically occult on plain film . If there is sufficient clinical concern , CT of the chest is recommended for better assessment of possible infection .