Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the last chest radiograph performed earlier this morning , there has been interval expansion of the right - sided pneumothorax . This is particularly noticeable on the lateral and inferolateral aspect of the right lung , with no significant change in the right apex . No evidence of tension . The right chest tube is unchanged in position since the prior CXR . No other interval changes are noted . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Interval worsening of the right - sided pneumothorax .