Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is volume loss of the right upper lobe as delineated on the prior chest CT secondary to a right upper lobe mass . The visualized left lung is grossly clear of focal consolidation , pleural effusion or pneumothorax . Scarring / fibrotic changes are noted in the left upper lobe . There is no pulmonary edema . The heart is normal in size . Thoracic spinal metastases are better seen on prior cross sectional imaging .
    OUTPUT:
    
Right upper lobe volume loss secondary to a right upper lobe mass better delineated on the prior chest CT .