This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
[{'content': 'Von Hippel Lindau is associated with all except \nSelect and explain. \nA. Endo lymphatic sac tumors, B. Hemangioendotheliomas, C. Pheochromocytoma, D. Islet cell tumors', 'role': 'user'}, {'content': "Answer: B \nExplanation: Harrison's principles of internal medicine 17th edition *Mutation of 1 allele of VHL mutation leads to retinal angiomas,CNS hemangioblastoma,pheochromocytomas,multicentric clear cell cysts,cysts involving pancreas,liver and kidneys and adenomas of kidney<\\p>", 'role': 'assistant'}]