Its been a year and a half since my wife died. 4 years after cyberknife and also having a shunt installed for hydrocephalus, she developed the rarest of rarest cancers that can occur. Perhaps 15 cases on the books to where it attacked her brain stem. She was in no pain. Things were going great after the cyberknife, then oct 2015 she got shooting pain in her mouth. and the following mri, showed the Acoustic Neuroma had gone from nothing all of a sudden to a quarter size tumor. Dont worry, Dont worry, these never turn cancerous we were told. Well hers did. Terminal type called Peripheral Malignet Sheath Tumor. She died 8 months later. I will post a full story about her and the nightmare that the hospital put her and me through, the night she went into a seizure. Let me just tell you the truth. If you are a terminally ill patient you have no rights. I dont know if my anger will ever go away at the hospital and the lies they had told me those last few weeks. But good luck and dont let me scare you. Like i said she was one in billions.