Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are small persistent bilateral pleural effusions . Degree of bibasilar atelectasis has improved likely in part due to improved aeration . There is no consolidation worrisome for pneumonia . Cardiomediastinal silhouette is within normal limits . Median sternotomy wires are intact . No acute osseous abnormalities .
    OUTPUT:
    
Small persistent bilateral pleural effusions and bibasilar atelectasis . No superimposed acute cardiopulmonary process .