Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ , again seen are patchy opacities in both lungs . Allowing for technical differences , the appearance is similar , likely accentuated by increased contrast on the current film . As before , the right hemidiaphragm is elevated , with a small effusion . Minimal blunting of the left costophrenic angle is also similar to the prior film . Again seen is mild cardiomegaly with background hyperinflation / COPD . Incidental made of probable old healed rib fractures at the left lung apex .
    OUTPUT:
    
Bilateral patchy opacities , non-specific , but consistent with multifocal pneumonic infiltrates . Background COPD . Stable mild cardiomegaly . Doubt significant CHF . Small bilateral effusions are similar to the ___ study .