This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Surgery
True about duct ectasia 
Select and explain. 
A. A\/W smoking, B. puckering of skin over the breast seen, C. Abscess formation not seen, D. Treated by mastectomy
A: A\/W smoking
Answer: A: A\/W smoking 
Explanation: duct ectasia; it is dialatation of lactiferous duct due to muscular relaxation of ductwall with periductal mastitis greenish discarge from the nipple indurated mass under the areola which is tendor eventually it forms Abscess and fistula associated with smoking treatment is cone excision of involved major ducts - Adair Hadfield operation ref ;(page no;525) 5th edition of SRB&;S Manual of SURGERY