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: Anatomy
False statement about nipple discharge 
Select and explain. 
A. Cone excision done in single intra ductal tumor, B. Mammography done when duct papilloma is < 4.5, C. Red discharge indicates malignancy, D. Blue-black discharge indicates duct ectasia
B: Mammography done when duct papilloma is < 4.5
Answer: B: Mammography done when duct papilloma is < 4.5 
Explanation: Mammography is rarely useful except to exclude an underlying impalpable mass. Ref : Bailey and love 27th edition Pg no : 864