This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroradiology, Subject name: Radiology
[{'content': 'Pseudoahrosis of Tibia is seen associated with \nSelect and explain. \nA. NF-1, B. NF-2, C. VHL, D. STURGE WEBER SYNDROME', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pseudoahrosis of the tibia is usually seen associated with NF-1,a false joint between knee and ankle. Sphenoid wing dysplasia is also seen in NF-1. Acoustic Neuromas/Schwannomas are seen with NF-2. Multifocal haemangioblastomas are associated with VHL. Powine stain,leptomeningeal vascular malformations and Tram Track appearanceare seen with Sturge Weber syndrome.', 'role': 'assistant'}]