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': 'Trouser leg appearance in myelography is seen in which tumor \nSelect and explain. \nA. Extradural, B. Intradural, C. Intra medullary, D. All the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Intramedullary\xa0 - Widening of cord, Trouser leg appearance.', 'role': 'assistant'}]