This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "Duhamel procedure is done for \nSelect and explain. \nA. Hirschsprung's disease, B. HPSS, C. Meckels diveiculum, D. Volvulus", 'role': 'user'}, {'content': "Answer: A \nExplanation: Answer- A. Hirschsprung's diseaseSurgery in Hirschsprung's discase aims to remove the aganglionic segment and'pull-through'ganglionic bowel to the anus (e.9. Swenson, Duhamel, Soave and transanal procedures) and can be done in a single stage or in several stages after first establishing a proximal stoma in normally innervated bowel.", 'role': 'assistant'}]