Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographdemonstrates well expanded lungs with minimal linear atelectasis in the left lower lung . No focal opacity . No pleural effusion or pneumothorax . Heart size , mediastinal contour , and hila are unremarkable . Limited assessment of the osseous structures is grossly unremarkable without displaced rib fracture .
    OUTPUT:
    
1 . Minimal left lower lobe linear atelectasis . 2 . No displaced rib fracture .