Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube in situ with the tip 48 mm proximal to the carina . Nasogastric tube in situ coursing out of sight inferiorly . Low lung volumes . Transverse cardiomegaly . Extensive calcification of the thoracic and abdominal aorta . The bibasal opacities most likely represent a combination of atelectasis and small effusions , which are unchanged .
    OUTPUT:
    
No significant interval change .