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': 'A 50-years old woman complains of intermittent bleeding from the left nipple over the past 3 months. No mass is palpable, but a bead of blood can be expressed from the nipple. The ideal procedure in this case would be- \nSelect and explain. \nA. Cytological examination of discharge and if no malignant cells, to be kept under careful observation, B. Segmental excision of breast, C. Microdochotomy, D. Simple mastectomy', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e. Microdochotomy", 'role': 'assistant'}]