Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate well expanded clear lungs . Cardiomediastinal and hilar contours are unremarkable . There is no pneumothorax , pleural effusion , or consolidation .
    OUTPUT:
    
No pneumonia seen within the limitations of chest x-ray . If symptoms persist , CT of the chest can be used to exclude radiographically occult infection .