Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild left basilar atelectasis is persistent . Mild cardiomegaly is unchanged compared to exams dated back to ___ . Overall , there has been interval improvement in the small bilateral pleural effusions with residual small right pleural effusion . No focal consolidations concerning for pneumonia are identified . There is no evidence of a pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Interval improvement of small bilateral pleural effusions with a residual small right effusion .