burning feeling in chest; lobular breast cancer, metastatic and was in her bones and lymph nodes; lobular breast cancer, metastatic and was in her bones and lymph nodes/stage 4 metastatic breast cancer and it is in her bones/diagnosed in her right breast; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP), Program ID. The reporter is the patient.  A 55-year-old female patient received BNT162b2 (BNT162B2), on 07Dec2021 at 15:30 as dose 3 (booster), single (Lot number: FJ8762) at the age of 54 years, in right arm for covid-19 immunisation. The patient's relevant medical history included: "High cholesterol" (unspecified if ongoing), notes: High cholesterol Diagnosed years ago 10 plus years.; "High blood pressure" (unspecified if ongoing), notes: High blood pressure Diagnosed years ago 10 plus years. The patient's family history included: "birth mother did have breast cancer" (unspecified if ongoing), notes: birth mother did have breast cancer. There were no concomitant medications. Vaccination history included: BNT162b2 (Dose: 1, Batch/lot number: EP7534  , Injected into right arm., 1st dose in the morning), administration date: 23Mar2021, when the patient was 54-year-old, for COVID-19 Immunization; BNT162b2 (Dose: 2, Lot EW0162, expiration is unknown. Injected into right arm., 2nd one was 10:30 am.), administration date: 15Apr2021, when the patient was 54-year-old, for COVID-19 Immunization. The following information was reported: BREAST CANCER METASTATIC (medically significant) with onset 05Dec2022, outcome "not recovered", described as "lobular breast cancer, metastatic and was in her bones and lymph nodes"; INVASIVE LOBULAR BREAST CARCINOMA (medically significant) with onset 05Dec2022, outcome "not recovered", described as "lobular breast cancer, metastatic and was in her bones and lymph nodes/stage 4 metastatic breast cancer and it is in her bones/diagnosed in her right breast"; CHEST PAIN (non-serious), outcome "unknown", described as "burning feeling in chest". The event "burning feeling in chest" required physician office visit. The patient underwent the following laboratory tests and procedures: Mammogram: ok, notes: She did mammogram and ultrasound 2 years ago and everything was ok; Unknown result; Ultrasound scan: ok, notes: She did mammogram and ultrasound 2 years ago and everything was ok; Unknown result. Therapeutic measures were taken as a result of breast cancer metastatic, invasive lobular breast carcinoma.  Clinical course: She has a patient on the line who reported an adverse event for Ibrance. She stated she was not sick. She had a burning feeling in chest that caused her to go to doctor and she thought it was acid reflux. Patient clarified information above. She has to take Ibrance, and has not started it yet. Telling what happened with what happened before they diagnosed it. Just went a couple of weeks ago for ultrasound and mammogram. Has lobular breast cancer, metastatic and was in her bones and lymph nodes. She had a pain in chest that led her to get a mammogram. She did mammogram and ultrasound 2 years ago and everything was ok. She had Pfizer Covid vaccines and boosted and they said not to do mammogram so close to vaccines and booster and said it could offset her mammogram, so she had a year off. Now she was stage 4 metastatic breast cancer and it is in her bones. She did not wish to provide the name of her primary care provider. She had all in right arm because she was a lefty. The breast cancer was diagnosed in her right breast at the Breast center in city. Her breast cancer was in lymph nodes and in her right breast on the side and not anywhere else. She believes in vaccines, but several women there that has breast cancer were talking and that was the discussion. They had all been vaccinated and were asking which sides they received vaccines on and which sides they had cancer on. There were 4-5 other women. She does not have any personal information to report for them and did not know which brand of the Covid vaccine they received. She takes other medications, but nothing relevant. She wad getting glasses to read vaccination card. She needed to use glasses prior to getting vaccines. She knew she wanted to get all of them the Pfizer brand of Covid vaccine. Medical treatment for breast cancer - Arimadex. Started a week ago yesterday. No side effects. Waiting for the Ibrance to come through. Then she will take Xgeva also, and was still waiting for that. Pfizer/BioNTech COVID-19 Vaccine Follow-up Questionnaire: Time: 1st dose in the morning. 2nd one was 10:30 am. 3rd dose was 15:30 pm. Not a military facility. She has no information on the 4-5 other women. She does not know them. They were all newly diagnosed women with breast cancer and they all asked about if they were vaccinated. There were several that sat there. One women did not say anything and others did. Cancer was in the same side as their vaccines. Her birth mother did have breast cancer, but hers is a different kind. She was 78. It was disturbing. Her mother had ductal, and hers was lobular. It is just a dot on the mammogram and harder to detect. She was not blaming. She does not know what brand any of the other women got. She was in shock at what was going on with her with the ultrasounds and got like 5 mammo's that day. It was too overwhelming. What number does she call if she has any side effects.