Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . The lungs are clear . No consolidation , effusion , or pneumothorax is present . There may be minimal linear atelectasis in the right upper lobe . The heart and mediastinal contours are normal . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Linear opacity most suggestive of minor atelectasis with no definite pneumonia .