Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no evidence of pneumothorax . There are no focal opacities concerning for infection . Left lower lobe atelectasis is present , however , but this clears upon deeper inspiration in the lateral films . Cardiac size is normal . The aorta is tortuous . No rib fractures are appreciated on these non-dedicated films .
    OUTPUT:
    
1 . No evidence of acute cardiopulmonary process . 2 . No evidence of fracture ; however , chest x-ray is insensitive and dedicated rib views can be obtained if clinically desired .