Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . There is no evidence of pneumothorax or rib fracture . The heart , mediastinum , hilar , and pleural surfaces are normal . There is left lower lobe linear opacities consistent with atelectasis .
    OUTPUT:
    
1 . No evidence of pneumothorax or rib fracture . 2 . Left lower lobe atelectasis .