Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ at 19 :21 p .m . and allowing for differences in technique , no definite interval change is identified . Again seen is cardiomegaly with calcified aorta and tenting of the left hemidiaphragm . There is upper zone redistribution . There is mild diffuse prominence of interstitial markings - this is likely not changed , but accentuated by differences in technique , and may reflect chronic lung disease . Opacity at the right base laterally is also likely accentuated by differences in technique . No frank consolidation or gross effusion is identified .
    OUTPUT:
    
Findings suggestive of COPD . Upper zone redistribution and cardiomegaly . No definite interval change .