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
A blood stained discharge from the nipple indicates - 
Select and explain. 
A. Breast abscess, B. Fibroadenoma, C. Duct papilloma, D. Fat necrosis of breast
C: Duct papilloma
Answer: C: Duct papilloma 
Explanation: "Bloody discharge is more suggestive of cancer but is usually caused by a benign papilloma in the duct." - CSDT
"Intraductal papilloma is the most common cause of bloody nipple discharge." — Schwartz 7/e p 553

Also, remember

Nipple discharge is suggestive of cancer if it is spontaneous, unilateral, localized to a single duct, occurs in women age 40 years or more, is bloody, or is associated with a mass.
Nipple discharge is suggestive of a benign condition if it is bilateral or multiductal in origin, occurs in women age 39 years or less, or is milky or blue-green in colour.