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: Radiology
[{'content': 'Popcorn calcification is seen in : \nSelect and explain. \nA. Fibroadenoma, B. Fibroadenosis, C. Carcinoma breast, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Calcifications are common in fibroadenoma of breast, especially in postmenopausal women.\nMost of the calcification are coarse and the so calledpopcorn calcifications are pathognomonic for fibroadenoma.', 'role': 'assistant'}]