Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There bilateral alveolar opacities with a perihilar and lower lobe predominance . There is no large effusion although bilateral costophrenic angles are not particularly well seen raising the possibility of small effusions . Cardiac silhouette is within normal limits . Atherosclerotic calcifications are noted at the aortic arch . No acute osseous abnormalities .
    OUTPUT:
    
Bilateral parenchymal opacities raising concern for pulmonary edema . Possibility of infection not excluded .