Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bibasilar airspace opacities have slightly improved on the left . There is no new consolidation or pleural effusion . There is no pneumothorax . The heart and mediastinum are magnified by the projection . Chronic right shoulder fracture dislocation is unchanged .
    OUTPUT:
    
Airspace opacity at the left base is improved , likely due to resolving atelectasis or aspiration . Persistent right basilar airspace opacity may be due to atelectasis or aspiration .