Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is new dense opacification of the left lower lung field with silhouetting of the left hemidiaphragm , concerning for atelectasis . Blunting of the left costophrenic angle suggests an underlying pleural effusion . No definite displaced rib fracture is seen , although rib series or CT are more sensitive . No pneumothorax is seen . Tortuosity and calcification of the aorta are again noted .
    OUTPUT:
    
Left lower lobe atelectasis with likely left pleural effusion . No definite rib fracture seen , although rib series or CT are more sensitive . These findings were reported to Dr . ___ by Dr . ___ by telephone at 3 :___ p .m . on ___ at the time of discovery of these findings .