This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Surgery
[{'content': 'Stereotactic radiosurgery is done for: \nSelect and explain. \nA. Glioblastoma multiforme, B. Medulloblastoma spinal cord, C. Ependymoma, D. AV malformation of brain', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) AV malformation of brainRef: Sabiston 19/e p 1900-1902* Stereotactic Surgery involves delivery of concentrated dose of RT to a defined volume of brain using Gamma knife or modified linear accelerator* Used in# Metastatic tumors# AV malformations# Benign Cranial nerve lesions# Trigeminal neuralgia', 'role': 'assistant'}]