Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single upright view of the chest is compared to previous exam from ___ and chest CT from ___ . There is streaky , linear opacities at the lung bases , more conspicuous on the left than on the right which has increased since previous exam . Superiorly the lungs are clear of consolidation . Cardiomediastinal silhouette is unchanged . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Streaky , linear bibasilar opacities , greater on the left than on the right potentially due to atelectasis ; however , component of aspiration or infection is also possible .