Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a nasogastric tube which terminates in the gastric fundus . The cardiac , mediastinal and hilar contours appear unchanged . The heart is probably at the upper limits of normal size . The aortic arch is partly calcified . Lung volumes are somewhat low . The lungs appear clear . There is no pleural effusion or pneumothorax . No free air is seen .
    OUTPUT:
    
Nasogastric tube terminating in the stomach . No evidence of acute disease .