Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . A right lower lobe linear opacity likely represents atelectasis and appears unchanged compared to prior study . The remaining lungs are clear . There is no pneumothorax or pleural effusion . The cardiac , mediastinal , and hilar contours are normal .
    OUTPUT:
    
Likely right lower lobe atelectasis . Otherwise , normal radiographic examination of the chest .