Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ and allowing for differences in positioning , I doubt significant interval change . The cardiomediastinal silhouette is prominent , but probably similar , allowing for differences in technique . There is upper zone redistribution , without CHF , unchanged . There are subtle patchy opacities at both lung bases , which appear similar to the prior study . No progression in these areas to suggest developing aspiration pneumonitis or pneumonia is identified . No frank consolidation or gross effusion is identified .
    OUTPUT:
    
Doubt significant interval change . Please see comment above .