This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast Cancer - Types and Staging, Subject name: Surgery
[{'content': 'Histological variety of Breast carcinoma with best prognosis is? \nSelect and explain. \nA. Medullary, B. Colloid, C. Lobular, D. Tubular', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ANSWER: (D) TubularREF: Sabiston 17th ed p. 891, CSDT 11th ed p. 335It is commonly held that infiltrating ductal carcinomas (NOS) is the most common form of breast carcinoma and carries worst outcome.Infiltrating and pure medullary carcinomas have intermediate outcomesTubular and mucinous carcinomas are least aggressive cancersNOTE: Most important prognostic factor for breast carcinoma is staging followed by lymph node status', 'role': 'assistant'}]