large knot underneath her right arm in the lymph node area; seems to have created a cancerous effect that went into her lymph nodes on the right side; Sore Hips; Sneezing; Coughing; Slight Fever, but never a true fever; Chills; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 67 year-old female patient received bnt162b2 (BNT162B2), administered in arm right, administration date 03Nov2021 14:00 (Lot number: EW0178, Expiration Date: 30Nov2021) at the age of 67 years as dose 3 (booster), single for covid-19 immunisation. Relevant medical history included: "Breast Cancer" (unspecified if ongoing), notes: History of Breast Cancer 16 Years Ago. The patient took concomitant medications. Vaccination history included: Bnt162b2 (DOSE 1, Lot: ER8727), administration date: 31Mar2021, when the patient was 57 years old, for COVID-19 Immunization; Bnt162b2 (DOSE 2, Lot: ER8729), administration date: 21Apr2021, when the patient was 57 years old, for COVID-19 Immunization. The following information was reported: LYMPHADENOPATHY (non-serious) with onset Nov2021, outcome "not recovered", described as "large knot underneath her right arm in the lymph node area; seems to have created a cancerous effect that went into her lymph nodes on the right side"; ARTHRALGIA (non-serious) with onset Nov2021, outcome "recovered" (Nov2021), described as "Sore Hips"; SNEEZING (non-serious) with onset Nov2021, outcome "recovered" (Nov2021), described as "Sneezing"; COUGH (non-serious) with onset Nov2021, outcome "recovered" (Nov2021), described as "Coughing"; PYREXIA (non-serious) with onset Nov2021, outcome "recovered" (Nov2021), described as "Slight Fever, but never a true fever"; CHILLS (non-serious) with onset Nov2021, outcome "recovered" (Nov2021), described as "Chills". The events "large knot underneath her right arm in the lymph node area; seems to have created a cancerous effect that went into her lymph nodes on the right side", "sore hips", "sneezing", "coughing", "slight fever, but never a true fever" and "chills" were evaluated at the physician office visit and emergency room visit. Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: large knot underneath her right arm in the lymph node area; seems to have created a cancerous effect that went into her lymph nodes on the right side was reported as worsened. Concomitant Products Pain Killer: Caller states she does not know the name, but it is not a narcotic. Concomitant Products Antibiotic: Caller states she does not know the name. Each day she had a different side effect. Sore hip one day, all hips were sore, next day sneezing and coughing, chills and slight fever, never got to true fever. Resided within the week. Went to Emergency Room 12Nov2021. onset of AE Couple of days after the dose, maybe 3 days after. AE required to physician office.Outpatient went to visit the doctor 17Nov2021. No prior vaccinations within 4 weeks. No AE following prior vaccinations. No Family Medical History Relevant to AE. Caller states she had tests done before in September and mammograms that did not show the knot. Caller states now they did tests to see if the knot was cancerous, and they are saying it is cancerous.  No follow-up attempts are possible. No further information is expected.