Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are calcified parenchymal micronodules in both lower lobes , seen to better detail on prior abdomen / pelvic CT dated ___ . Superimposed on these findings are new patchy bibasilar lung opacities as well as a focal area of atelectasis in the right mid lung region . Cardiomediastinal contours are stable compared to the previous exam . No pleural effusion .
    OUTPUT:
    
New patchy bibasilar opacities , possibly due to acute aspiration given apparent rapid development since CT abdomen study 1 day earlier . Short - term followup radiograph may be helpful to exclude infectious pneumonia .