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': "Slit shaped nipple seen in \nSelect and explain. \nA. Duct ectasia, B. Duct pappiloma, C. Paget's disease, D. CA breast", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. Duct ectasiaDuct ectasia is dilatation of lactiferous ducts associated with periductal inflammation.Chronic inflammation and scarring will lead to indrawing and slit-shaped inversion of the nipple.If secondary infection supervenes, a mammary duct fistula can also develop.', 'role': 'assistant'}]