Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable AP view of the chest demonstrates unchanged position of the endotracheal tube , terminating approximately 4 .2 cm above the carina . The enteric tube has been pulled back and is now terminating at the level of the mid thoracic esophagus . Lungs are clear . There is no pleural effusion or pneumothorax . There is no free air under the diaphragm .
    OUTPUT:
    
1 . Nasogastric tube has been pulled back and is now terminating in the mid thoracic esophagus and needs to be advanced for proper positioning . 2 . Otherwise , no substantial change compared to the prior study .