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': 'Which of the following is false about phyllodes tumor? \nSelect and explain. \nA. Always malignant, B. Grows rapidly, C. Unilateral, D. Excision is the treatment', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Phyllodes tumor is usually benign.\nIt is unilateral and grows rapidly.\nLymph nodes are not involved.', 'role': 'assistant'}]