Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tracheostomy tube and nasogastric tubes are unchanged in position . Left basilar retrocardiac airspace opacification is stable . Right upper lung calcified nodules measuring up to 3 mm are unchanged . There is no new consolidation or pleural effusion . There is no pneumothorax . Metallic clips in the right suprahilar location are again noted .
    OUTPUT:
    
Stable left lower lobe atelectasis .