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': 'Pharyngocutaneous fistula is seen in all expect ? \nSelect and explain. \nA. Chemotherapy, B. Surgery, C. No wound care, D. Radiotherapy', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans is 'a' ie. Chemotherapy", 'role': 'assistant'}]