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: Pathology
[{'content': 'Ependymomas are commonly associated with: \nSelect and explain. \nA. Tuberous sclerosis, B. Neurofibromatosis 1, C. Neurofibromatosis 2, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ependymomas most often arise next to the ependyma-lined ventricular system, including the oft-obliterated central canal of the spinal cord. In the first two decades of life they typically occur near the fouh ventricle and constitute 5% to 10% of the primary brain tumors in this age group. In adults the spinal cord is the most common location; tumors in this site are paicularly frequent in the setting of neurofibromatosis type 2 Ref: Robbins 8th edition Chapter 28.', 'role': 'assistant'}]