Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta is mildly unfolded . The hilar contours are unremarkable , and the pulmonary vascularity is within normal limits . Streaky linear opacities are noted at both lung bases most likely reflective of atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . No displaced rib fractures visualized .
    OUTPUT:
    
No displaced rib fracture identified , however , if there is continued clinical concern , a dedicated rib series could be obtained . Bibasilar subsegmental atelectasis .