Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size continues to be mildly enlarged . Calcifications are again seen in the aorta . No pneumothorax or pulmonary edema . Opacities are seen in the left lower lobe , corresponding to opacities on the thoracic spine on lateral view , which are concerning for pneumonia . Additional opacities are seen adjacent to the aortic knob , which likely represent atelectasis .
    OUTPUT:
    
Left lower lobe pneumonia .