Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided pleural and parenchymal scarring have been present dating back to at least ___ chest radiographs , and are associated with chronic right - sided volume loss . Cardiomediastinal contours are stable in appearance compared to prior studies , with a persistent slight shift of mediastinum towards the right . Left lung is grossly clear , and there is no evidence of a left pleural effusion .
    OUTPUT:
    
1 . No radiographic evidence of pneumonia . 2 . Chronic right - sided pleural and parenchymal scarring .