Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest is compared to previous exam from ___ . Exam is limited secondary to patient positioning as he could not cooperate for the examination . Again seen is streaky left basilar opacity in the retrocardiac region , not significantly changed . Minimal right basilar opacity is also seen , not significantly changed . Superiorly , the lungs are grossly clear . Given differences in positioning and technique , cardiomediastinal silhouette is unchanged . Osseous structures are grossly unremarkable .
    OUTPUT:
    
No significant interval change . Limited exam with streaky left basilar greater than right basilar opacities , potentially atelectasis , infection or aspiration not excluded .