Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . Interstitial process seen on the prior chest x-ray is now more prominent than on the prior occasions , though it is thought that most of this is likely due to the supine position on the current film as opposed to the standard projections in upright position on the other . No effusions are seen .
    OUTPUT:
    
Interstitial process probably unchanged , but appears more prominent , likely due to supine position .