Pediatrics Which of the following is a cause of Hirschsprung disease in a patient ? A Failure of migration of neural crest cells B Excessive peristalsis of the affected pa of the gut C Failure of involution of vitelline duct D Obstruction secondary to an infectious agent 💡 Explanation Which of the following is a cause of Hirschsprung disease in a patient ? ✓ Correct Answer: A. Failure of migration of neural crest cells