Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size is mildly enlarged . The aorta is tortuous . Mild pulmonary edema with a small left pleural effusion . More focal left basilar opacification could reflect atelectasis . There is no pneumothorax . No acute osseous abnormalities are detected . S - shaped scoliosis of the thoracolumbar spine is present .
    OUTPUT:
    
Mild pulmonary edema and small left pleural effusion . Left basilar atelectasis .