it worsened because it is further up her leg, she says the ache is the same but it extended further up the leg; it worsened because it is further up her leg, she says the ache is the same but it extended further up the leg; numbness of right knee, leg, and ankle/her right leg feels numb now from her ankle all the way to the knee; This is a spontaneous report from a contactable consumer(patient). A 70-years-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Formulation: Solution for injection; Lot Number: EN6207; Expiration date was not reported), via an unspecified route of administration, administered in Arm Left on 17Mar2021 10:30  (at the age of 70-year-old) as dose 1, single for covid-19 immunization. Medical history included cancer, covid-19 from Nov2020 to an unknown date, surgeries from an unknown date and unknown if ongoing surgeries because she had a tube in her lung, ovarian cancer from an unknown date and unknown if ongoing, chemo, blood clot, Indication was reported as such so, she didn't get covid. She has been testing positive for covid since November. She had a couple of surgeries because she had a tube in her lung and she had to be tested for that and she kept testing positive right up until 01Mar which was the surgery for the ovarian cancer, she tested negative before that surgery. So, from 06Nov all the way to 27Feb, she thinks that was the date of the test, for all that time she tested positive. She confirmed all of that happened before receiving the covid-19 vaccine. The doctors said told her when she tested negative that she could get the vaccine. She did not know if she should since she had been on chemo, but they told her she could, so she did. History included she has not had chemo since February, it has been 6 weeks, because of the operation for the ovarian cancer, she skipped 2 chemo treatments so she should be better without the chemo. No further information provided. If she was still on chemo, she would blame it on that but she doesn't take her chemo again until next week that is why she took the vaccine now so she would know what it was if something happened. History of all previous immunization with the Pfizer vaccine considered as suspect and additional vaccines administered on same date of the Pfizer suspect were reported as none. The patient did not receive any other vaccines within four weeks prior to the vaccination. AE(s) following prior vaccinations was reported as none. Family Medical History Relevant to AE(s) and Relevant Tests were reported as none. Patient was calling about the Pfizer shot, she confirmed the covid-19 vaccine. She had cancer, she said they got it all out on the 01Mar, but she still takes, she said she was at a loss for words, she has blood clots, so she takes a blood thinner. She had the first dose on the 17Mar. She first noticed her right leg feeling numb about an hour after the dose. She went from there to the doctor's office and while she was in the office her right leg started to feel numb, kind of like you feel numbness sometimes if you are sitting on it, but she was not sitting on it. It comes and goes, when she got up and walked it wasn't as much but as the day went on it progressed it and now it stays. She would say it worsened because it is further up her leg, she says the ache is the same, but it extended further up the leg. She was wondering if that was a sign or symptom or if they have anything about that happening. It was annoying. The patient did not visit to emergency room or physician office. The clinical outcome of events was unknown.   No follow-up attempts are possible. No further information is expected.