Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is mild to moderately enlarged . The aorta appears tortuous . The hilar contours are normal . Mild streaky atelectasis is noted in the lung bases . Pulmonary vasculature is normal . No focal consolidation , pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild streaky bibasilar atelectasis .