Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is demonstrated . Mild atherosclerotic calcifications are noted within the aortic knob . Hilar contours are normal . There is no pulmonary edema . Small bilateral pleural effusions are noted . Minimal streaky bibasilar airspace opacities could reflect atelectasis . No pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Minimal streaky bibasilar opacities may reflect atelectasis but infection is not excluded . Small bilateral pleural effusions .