Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior study performed on ___ , lungs are now better aerated . Bibasilar opacities persist , although or less consolidated in appearance compared to the prior radiograph . There is no new consolidation . Mild pulmonary vascular congestion . No pneumothorax . Marked cardiomegaly is stable .
    OUTPUT:
    
Improving lung volumes and bibasilar opacities since ___ , may represent resolving infection or atelectasis .