Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal view of the chest was obtained . There is near - complete opacification of left hemithorax with slight rightward shift of the mediastinal structures . This is most compatible with a large amount of left pleural fluid . The right lung is clear . Right heart border is unremarkable . Osseous structures are unremarkable . No radiopaque foreign bodies .
    OUTPUT:
    
Opacified left hemithorax with slight rightward shift of mediastinal structures , compatible with large left pleural effusion . Findings were discussed with Dr . ___ ___ phone at 3 : 50 pm on ___ at time of discovery .