Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is not enlarged . There are patchy opacities throughout much of both lungs , most pronounced in the right upper and left lower zones . Subtler changes are likely present in other areas of the lung . Compared with ___ , the appearance is fairly similar , though perhaps slightly more pronounced in both the right upper zone and left base . Compared with ___ , the appearance is probably slightly more pronounced at left base , though not definitely changed in the right upper zone . On today 's film , changes at the left base have a more branching , nodular appearance than on the two prior films . Compared to a more remote film from ___ , the appearance is more similar , but remains slightly worse at the left base . The appearance is not suggestive of CHF and no effusions are identified . No pneumothorax is detected . Apparent drain - like tubing overlying the upper abdomen , unchanged .
    OUTPUT:
    
1 . Patchy opacities in both lungs , which have been present on multiple films and are consistent with ongoing multifocal pneumonia . There appears to be some recent interval worsening of findings in the right upper zone , though , over the long term , these have waxed and waned . Findings at the left base appear more pronounced compared with multiple prior films obtained since ___ . 2 . Doubt CHF . 3 . No effusion .