Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . As on prior , there are coarse interstitial markings seen throughout the lungs particularly identified at the periphery and at the bases . There is no superimposed new consolidation nor effusion . Cardiomediastinal silhouette is unchanged . No acute osseous abnormality detected .
    OUTPUT:
    
Diffuse and peripheral interstitial abnormality suggestive of fibrosis without definite superimposed confluent consolidation . Subtle or atypical infection can not be excluded .