Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A nasogastric tube has been placed which makes a single coil within the stomach . The cardiac , mediastinal , and hilar contours appear unchanged , allowing for differences in technique . The heart is at the upper limits of normal size . The lung volumes appear low . The lungs appear clear . There is no pleural effusion or pneumothorax . No free air is demonstrated . Degenerative changes involve each shoulder . The right acromiohumeral interval appears narrowed which can be seen with rotator cuff pathology , and suture anchors in the left humeral head suggest prior rotator cuff repair , also present before .
    OUTPUT:
    
No evidence of acute disease . Nasogastric tube terminating in the stomach . No evidence for free air .