Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior , the appearance of the increased interstitial markings has become more conspicuous , with a basilar predominance . There is also apparent focal thickening along the fissures which is also more conspicuous when compared to prior . There is no effusion . Lung volumes are appropriate . Cardiac silhouette is top - normal . Atherosclerotic calcifications are noted at the arch . No acute osseous abnormalities .
    OUTPUT:
    
Increased interstitial markings in the lungs appears to have progressed since ___ . This would suggest chronic underlying interstitial process . No definite superimposed consolidation . RECOMMENDATIONS A non urgent chest CT is suggested for further characterization .