Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right upper lobe airspace opacity is more apparent when compared to the prior radiographs . Bilateral lower lobe opacities have slightly improved . Pulmonary vascular congestion has also slightly improved . Probable small left effusion . Mild to moderate cardiomegaly . Prior median sternotomy and CABG . No pneumothorax .
    OUTPUT:
    
Increasing right upper lobe pneumonia . Bibasilar opacities and pulmonary vasculature have improved , likely improving edema and / or aspiration .