Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild chronic right basilar atelectasis but no other focal pulmonary opacity . Small bilateral pleural effusion , right more than left , are slightly decreased in size compared with prior and significantly improved from ___ . There is no pneumothorax . Mediastinal and cardiac contours are normal .
    OUTPUT:
    
No evidence of pneumonia . Chronic right basilar atelectasis is unchanged and small bilateral pleural effusions are slightly improved .