Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An enteric tube is seen which courses through the stomach and tip appears to be post pyloric in position . Lung volumes are low . The cardiac , mediastinal and hilar contours are normal . Patchy opacities in the lung bases may reflect aspiration or infection and appear progressed in the interval . No pleural effusion or pneumothorax is seen . There is no pulmonary edema .
    OUTPUT:
    
Patchy opacities in the lung bases are worse compared to the previous exam , and may reflect areas of aspiration or infection .