half cm tumor in her fallopian tube/1.5cm tumor in the fallopian tubes; Paraneoplastic cerebellar degeneration; meningitis; Severe headache; eyes would move back and forth involuntarily; severe vertigo; This is a spontaneous report from contactable consumer (sister) from Medical Information Team. An 81-year-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection), via an unspecified route of administration at the age of 81-year-old in Jan2021 (Batch/Lot number was not reported) as single dose for COVID-19 immunisation. Medical history included bladder cancer. The patient's concomitant medications were not reported.  Caller states ''My sister and I both received the Pfizer COVID-19 vaccine. My sister developed Paraneoplastic cerebellar degeneration two weeks after receiving the Pfizer vaccine. They did find a half cm tumor in her fallopian tube. Her doctors have reported the side effect but at that time she was not fully diagnosed. They thought at that time it was meningitis .'' Caller wants to know if Meningitis or Paraneoplastic cerebellar degeneration has been associated with the Pfizer COVID-19 vaccine. Response: Spoke from the attached document. These two disorders have not been listed as side effects associated with the vaccine. However we may not have the list of all the possible side effects associated with the vaccine. Caller was reporting side effects for her sister related to the Covid 19 vaccine. Her sister had received the Pfizer Covid 19 vaccine and 2 weeks later developed a disorder called Paraneoplastic cerebellar degeneration. They had found a tumor in the fallopian tube that was a tiny half centimeter tumor. Said that the doctors had reported the side effects but at the time it was not yet diagnosed as paraneoplastic cerebellar degeneration. At the time, they thought she had meningitis. The event happened about 2 weeks after the vaccine, so about 11Feb2021, was about 2 weeks before or 2 and a half weeks before 11Feb2021 that she got the vaccine. She was in the hospital 10 and a half weeks (about for 74 days). She contacted Pfizer, she believes in Mar2021. Since Feb2021 she had been in 3 different hospitals. They did send her some paperwork but she has not completed it yet. At that point in Mar2021 her diagnosis was meningitis. As it later turns out, it turned to a new diagnosis of the Paraneoplastic cerebellar degeneration. Her sister lives in PRIVACY, she does not even know where she went for the vaccine. She hasn't filed the written report yet. She was not diagnosed with the Paraneoplastic cerebellar degeneration until the very end, 10 days before she died. She died on 24Apr2021. Cause of death: They had removed her ovaries and fallopian tubes had the suspicion that this might have been the diagnosis without ever seeing the tumor. She had multiple CT scans (2021) and never saw the tumor until they removed the fallopian tubes. They found a 1.5cm tumor in the fallopian tubes which is what the cause of death was. She was calling to see if this has happened to anyone else. They say the tumor was the cause because it would have been so odd that it came on so suddenly, 2 weeks after the vaccine. The caller is terrified to get the vaccine, since she had bladder cancer. She had asked if anyone had reported this because that was the diagnosis at the time. They did not do an autopsy, probably because that was up to her brother in law and can understand why an autopsy was not done. They also say when her sister was having all of these bizarre symptoms, it was an auto immune reaction. She was perfectly fine and had come home from a bird watch. She had severe headache, eyes would move back and forth involuntarily in 2021. That never went away. She had severe vertigo in 2021, and it all happened in one day, it didn't go away. They did an immunoglobulin infusion treatment, she had very good treatment. They put her on steroids. The immunoglobulin treatment was for five days and nothing touched those symptoms. They had moved her from one hospital to a rehab facility in PRIVACY. The rehab doctor reported all of these symptoms to Pfizer. At that time, they were still calling it meningitis. He said that the elephant in the room was the vaccine. Felt the vaccine is not totally what caused it but accelerated what ever was going on with her, these bizarre disorders. Maybe this would have happened without the vaccine. They will never know. She wishes that someone can tell her whether or not she should get the vaccine. She asked her doctor who said he was not going to tell her to not get the vaccine. She was calling to see if this has happened to anyone else. They say the tumor was the cause because it would have been so odd that it came on so suddenly, 2 weeks after the vaccine. She had asked if anyone had reported this because that was the diagnosis at the time. The patient was hospitalized for events for 74 days. Therapeutic measures were taken as a result of events. The patient died on 24Apr2021. An autopsy was not performed.  The outcome of event half cm tumor in her fallopian tube/1.5cm tumor in the fallopian tubes was fatal. The outcome of events Paraneoplastic cerebellar degeneration and meningitis was unknown. The outcome of other events was not recovered.   Information on the lot/batch number has been requested.; Reported Cause(s) of Death: half cm tumor in her fallopian tube/1.5cm tumor in the fallopian tubes