Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal contours are stable in appearance compared to a scout image from a preprocedural PET - CT dated ___ . New linear opacities have developed in both lung bases , likely due to atelectasis although coexisting aspiration is possible in the appropriate clinical setting . Known subcentimeter lung nodules were seen to better detail on recent PET - CT . No evidence of pleural effusion or pneumothorax .
    OUTPUT:
    
No radiographic evidence of mediastinal widening to suggest hematoma . However , if clinical suspicion persists , CT may be helpful for more complete evaluation if warranted clinically .