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: Pathology
Most important prognostic factor in Ca. Breast. 
Select and explain. 
A. Lymph Node status, B. Tumor Size, C. Progesterone receptor status, D. Stage
A: Lymph Node status
Answer: A: Lymph Node status 
Explanation: Ans. (a) Lymph Node status(Ref: Ref: Robbins 9th/pg 1064 Complete review of pathology 2nd ed/ pg 656)Axillary LN status is the most important prognostic indicator in breast ca