Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . Compared to priors , the pulmonary vasculature is more engorged . The cardiomediastinal silhouette is unchanged . The left lower lung opacification is unchanged and likely represents atelectasis and a small effusion . There is no right pleural effusion . There is no pneumothorax .
    OUTPUT:
    
1 . Interval increase in vascular engorgement . 2 . Stable left lower lobe opacification likely represents atelectasis and a small effusion .