Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse widespread ground - glass opacities are unchanged since ___ . The lungs are hyperinflated . There is no significant pleural effusion or pneumothorax . Cardiac contour is mildly enlarged . Prior surgery of the cervical spine has been done .
    OUTPUT:
    
Bilateral widespread ground - glass opacities are unchanged . It is presumed to be due to pneumocystis infection .