This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2018, Subject name: Surgery
[{'content': 'Using a small fine probe, single lactiferous duct is excised. What is the name of the procedure: \nSelect and explain. \nA. Macrodochectomy, B. Microdochectomy, C. Webster operation, D. Hadfield operation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Microdochectomy: Small fine probe inseed into duct Peri-areolar incision is made By dissecting nipple flap, duct is excised Done for duct papilloma Hadfield operation: Conical excision of major ducts Done for duct ectasia', 'role': 'assistant'}]