Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the prior study , there has been no significant interval change in the left hilar mass with volume loss and opacification in left upper lobe , which likely represents postobstructive pneumonia / collapse . The right lung is clear . No large pleural effusion or pneumothorax is seen .
    OUTPUT:
    
No significant interval change since the prior study in the extensive left upper lobe consolidation and hilar mass . No large pleural effusions .