Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unchanged , with mild rightward shift of mediastinal structures due to right - sided volume loss . Opacity reflecting post-treatment changes is again seen within the paramediastinal region of the right upper lobe , without new focal consolidation , pleural effusion or pneumothorax . The pulmonary vascularity is not engorged . Degenerative changes of the thoracic spine are seen .
    OUTPUT:
    
Post - treatment changes within the right upper lobe . No radiographic evidence for pneumonia .