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
[{'content': 'In case of CA breast most prognostic factor is ? \nSelect and explain. \nA. Size of tumour, B. Lymph node status, C. Presence of estrogen receptor, D. Age. of menopause', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans is \'b\' ie lymph node status "the most impoant prognostic correlate for disease free and overall survival is axillary lymph node status. Node-negative women have less than a 30% risk of recurrence, compared to as much as a 75% risk for node-positive women." - Schwaz * But remember * Lymph node status may be the single most indicator of prognosis, but \'stage of breast cancer\' is a better indicator of prognosis as it includes lymph node status along with loco-regional status of cancer (i.e. size, involvement of chest or overlying skin) and metastasis [so if stage of breast cancer is among the options, it should be the answer', 'role': 'assistant'}]