Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left upper lobe is well aerated but left lower lobe atelectasis persists , with associated elevation of the left hemidiaphragm due to volume loss . The right lung is clear . A right IJ central line terminates in the lower SVC . There is no pneumothorax or pleural effusion . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Persistent left lower lobe atelectasis with associated elevation of the left hemidiaphragm .