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': 'Van Nuys grading system is used for? \nSelect and explain. \nA. LCIS, B. DCIS, C. Inflammatory carcinoma breast, D. Medullary carcinoma breast', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. DCISVan Nuys prognostic index is widely used to classify ductal carcinoma in situ (DCIS) into dissimilar risk categories that may be treated accordingly.', 'role': 'assistant'}]