Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates linear opacity at the right lower lobe suggestive of atelectasis . Lungs demonstrate no focal opacity convincing for pneumonia . Cardiomediastinal and hilar contours are unremarkable . Lungs are hyperexpanded suggestive of emphysematous changes . Deformity of the eighth right rib posteriorly appears to be secondary to prior injury .
    OUTPUT:
    
Hyperexpanded lungs with flattening of the bilateral diaphragms suggestive of emphysema . No focal opacity convincing for pneumonia .