Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As on prior , there diffuse bilateral parenchymal opacities suggestive of a chronic underlying interstitial process . On the lateral view , there is increased opacity projecting over the spine suggesting possible superimposed acute process such as infection . Cardiomediastinal silhouette is unchanged . No acute osseous abnormalities .
    OUTPUT:
    
Findings suggestive of chronic interstitial process . Increased opacity projecting posteriorly on the lateral view raises the possibility of superimposed acute process such as infection .