Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is moderately enlarged . The aorta remains tortuous . The pulmonary vascularity is not engorged . There is crowding of the bronchovascular structures . Streaky bibasilar airspace opacities likely reflect atelectasis . No pleural effusion or pneumothorax is seen . Mild elevation of the left hemidiaphragm is chronic . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis .