Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ , the moderate to large region of pneumonia and atelectasis at the right lung base may have improved slightly . The less extensive abnormality at the left base is unchanged . Heart size is top - normal . Small left pleural effusion is unchanged . Upper lungs are clear . ET tube , right internal jugular catheter , and an upper enteric drainage tube all ended in standard placements .
    OUTPUT:
    
Bilateral consolidation or basal atelectasis , moderate to large on the right , moderate on the left , improved on the right , unchanged on the left since ___ .