Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously identified linear opacities in the left lung base have improved compared to recent prior examination from ___ . However , a new confluent opacity in the right lung base is concerning for recurrent pneumonia , likely due to aspiration . The upper lungs are clear . There is no pneumothorax . There is no vascular congestion or large pleural effusion . Cardiomediastinal and hilar contours are within normal limits .
    OUTPUT:
    
New right basilar consolidation concerning for recurrent aspiration pneumonia .