Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate unremarkable cardiomediastinal and hilar contours . Lungs are clear but sligtlty hyperexpanded possibly due to underlying emphysema . No pleural effusion or pneumothorax present .
    OUTPUT:
    
No acute process . Expanded lungs may be due to underlying emphysema . ___ discussed possibility of emphysema with Dr ___ at 08 : 40 am on ___ via telephone ___ after discovery .