Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . A feeding tube is seen projecting over the upper abdomen . The lungs appear clear . No signs of pneumonia or edema . No large effusion or pneumothorax . The esophagus is known to be dilated and debris filled due to a distally obstructing lesion which accounts for mediastinal prominence . Heart size is within normal limits though a coronary stent projects over the left heart border . Bony structures appear grossly intact . Clips in the right upper quadrant noted .
    OUTPUT:
    
No evidence of pneumonia .