Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are stable . There is increased opacification in the bilateral bases , right worse than left . Mild cardiomegaly with mild pulmonary vascular congestion . No gross pneumomediastinum . Possible small right pleural effusion .
    OUTPUT:
    
Worsening bibasilar opacities concerning for multifocal pneumonia . No gross pneumomediastinum . Possible small right pleural effusion .