Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is streaky density bilaterally consistent with parenchymal scarring as before . The lungs are otherwise clear . The heart is at the upper limit of normal in size . The aorta is calcified . Mediastinal structures are otherwise unremarkable . The bony thorax is grossly intact .
    OUTPUT:
    
No active disease .