Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slightly lower lung volumes are noted when compared to prior . Diffusely increased interstitial markings are seen throughout the lungs which were present on prior but are now more conspicuous . There is no focal consolidation or large effusion . Cardiomediastinal silhouette is stable . No acute osseous abnormalities .
    OUTPUT:
    
Increased interstitial markings in the lungs bilaterally more conspicuous on today 's exam but present previously , potentially due to chronic interstitial process although component of interstitial edema or atypical infection are possible .