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': 'Popcorn calcificatin in mammography is seen in ? \nSelect and explain. \nA. Fibroadenoma, B. Fat necrosis, C. Cystosarcoma phylloides, D. Ca Breast', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans is \'a\' Fibroadenoma "Large lobulated (popcorn) calcification have a characteristic mammographic appearance" - Robbins Fibroadenomas are the most common benign tumors of breast.', 'role': 'assistant'}]