This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Neoplasia), Subject name: Surgery
[{'content': 'Most common location of spinal tumors \nSelect and explain. \nA. Intramedullary, B. Intradural extramedullary, C. Extradural, D. Equally distributed', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e. Extradural "The majority of neoplastic conditions that affect the spine are extradural metastases." - DeVita\'s Oncology Most commonSpinal tumor - MetastasesPrimary spinal tumor - Nerve sheath tumorIntramedullary tumor - EpendymomaSite of spinal tumors - ExtraduralSite of primary tumors - Intradural extramedullary', 'role': 'assistant'}]