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': 'Which of the following is not a radiological feature of meningioma? \nSelect and explain. \nA. Lamellar calcification, B. Enlarged foramen spinosum, C. Increased meningeal vascular markings, D. Decalcification inner table', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. Decalcification inner table', 'role': 'assistant'}]