Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest . Lung volumes are low , exaggerating heart size , which is top normal . Cardiomediastinal contours are unremarkable . Undulating contours of aortic calcifications could represent an ectatic aorta . Retrocardiac and right lung base linear opacities are compatible with atelectasis . Indistinct appearance of the left costophrenic angle suggests a small pleural effusion . No pneumothorax . No radiopaque foreign body .
    OUTPUT:
    
1 . Low lung volumes with bibasilar atelectasis and possible small left pleural effusion . 2 . Heavily calcified and tortuous aorta , which could be re-evaluated with conventional radiographs .