This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
[{'content': 'Which of the following is associated with destruction of myenteric plexus? \nSelect and explain. \nA. Hirschsprung disease, B. Secondary Achalasia, C. HPSS, D. GIST', 'role': 'user'}, {'content': "Answer: B \nExplanation: 12 Ans. is 'b' i.e., Secondary achlasia * Secondary achalasia may arise in Chagas disease, in which Trypanosoma cruzi infection causes destruction of the myenteric plexus, failure of peristalsis, and esophageal dilatation.", 'role': 'assistant'}]