This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Surgery
[{'content': 'Percentage of malignancy in duct ectasia is \nSelect and explain. \nA. No risk, B. 5:01, C. 1.2 :1, D. 10:01', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) No risk(Ref. Schwartz 10th edition Page 511, Bailey 26th edition page 806)* The periductal mastitis mimics like cancer and hence mammography must be done.* Otherwise there is no risk of cancer in Duct ectasia', 'role': 'assistant'}]