Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided central venous catheter is unchanged with the tip in the mid SVC . The lung volumes are low with persistent bibasilar atelectasis and a small bilateral pleural effusions , larger on the right than the left . No new opacity is identified . There is no pulmonary edema or pneumothorax . Allowing for technique , the cardiomediastinal silhouette is normal .
    OUTPUT:
    
No significant change from the prior radiograph ; specifically , no new opacity to suggest pneumonia .