Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bilateral lower lung opacities . The costophrenic angles are incompletely imaged . No pneumothorax is detected . Heart and mediastinal contours are within normal limits with extensive aortic calcification .
    OUTPUT:
    
Bilateral lowert lung opacities , which could be secondary to infection . Per review of the electronic medical record , these findings are known to the clinical team .