Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . When compared to multiple prior exams , there has been no significant interval change and interstitial opacities most notably at the lung bases . More spiculated opacity in the right upper lung is also seen . When compared to remote priors this has not significantly changed and is most suggestive of a chronic process . There is no definite superimposed consolidation . There is no effusion . Moderate cardiomegaly is again seen and unchanged . No acute osseous abnormality detected .
    OUTPUT:
    
Chronic parenchymal changes which have persisted and have not significantly changed since ___ and are likely chronic . No definite superimposed process .