Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior , there has been no significant interval change . Small - moderate right pleural effusion persists with adjacent atelectasis . The left lung is clear . The cardiomediastinal silhouette is stable . Median sternotomy wires are again noted . No acute osseous abnormalities identified .
    OUTPUT:
    
No significant interval change . Right - sided pleural effusion with associated atelectasis . Please note superimposed infection can not be excluded .