This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastro Intestinal System, Subject name: Pediatrics
[{'content': 'A neonate continuously regurgitates all feeds and is continuously drooling saliva. Which of the following is the most probable diagnosis? \nSelect and explain. \nA. Normal phenomenon, B. Congenital hypertrophic pyloric stenosis, C. Tracheo-esophageal fistula, D. Hirschsprung disease', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Tracheo-esophageal fistula * Neonates with tracheoesophageal fistula present with frothing, excessive drooling, coughing and cyanosis with feeding. This is followed by respiratory distress. Newborn regurgitates of its first and subsequent feeds.In CHPS,* Pyloric stenosis is usually not present at birth.* Nonbillous vomiting is the initial symptoms of pyloric stenosis.Hirschsprung Disease* There is characteristically delayed passage of meconium. This is followed by bilious vomiting and abdominal distension. Enterocolitis is seen between 2-4 weeks with bloody stools and fever.", 'role': 'assistant'}]