Melanoma; I found that your vaccinations helped me with this cancer... my cancer lesions on my legs/an unexpected benefit from the Pfizer-Biontech Covid19 vaccine; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  An 85-year-old male patient received BNT162b2 (BNT162B2), on 07Aug2021 as dose 3 (booster), single (Lot number: FC3180) at the age of 84 years for covid-19 immunisation. The patient's relevant medical history included: "Karposi's sarcoma", start date: 1998 (ongoing), notes: Agent states the Caller reports the vaccines helped with his Karposi's Sarcoma cancer; "Lesion on his legs" (unspecified if ongoing). There were no concomitant medications. Vaccination history included: BNT162b2 (Vaccine Name: Second injection of the first Covid vaccine:, Lot Number/ Expiry Date: EN6201/unknown, Route, Anatomical Location: not provided, No. of Previous Doses: One), administration date: 12Feb2021, when the patient was 83-year-old, for Covid-19 immunization; BNT162b2 (Vaccine Name: First injection of the first Covid vaccine, Lot Number/ Expiry Date: EL3302/unknown, Route, Anatomical Location: not provided, No. of Previous Doses: No), administration date: 22Jan2021, when the patient was 83-year-old, for Covid-19 immunization. The following information was reported: MALIGNANT MELANOMA (medically significant) with onset Feb2022, outcome "not recovered", described as "Melanoma"; THERAPEUTIC RESPONSE UNEXPECTED (non-serious) with onset 2022, outcome "unknown", described as "I found that your vaccinations helped me with this cancer... my cancer lesions on my legs/an unexpected benefit from the Pfizer-Biontech Covid19 vaccine".   Clinical course: Caller states he "took your vaccine in 2020 and in 2021 I took 2 boosters" ater stating "I have total of 6 injections  vaccinations and 2 boosters".  He added, "I found that your vaccinations helped me with this cancer... my cancer lesions on my legs".He reports that he was diagnosed "in 1998 with Karposi's sarcoma" noting it is caused by "there are HHV8 herpes virus" adding that, "mine is extremely rare ost have HIV with the cancer" confirming that he is not HIV positive.  He states that, "(name-withheld) discovered this virus" and thinks the vaccine may have been beneficial by stimulating "the innate immune response". He later discussed the causative virus for Karposi's Sarcoma further stating "it is known to have 2 forms, limited/non-active circulated in human blood" and is very common in the population, but "5 people per million each year gets Karposi's sarcoma" wants Pfizer to look into this disease state/causative virus. atient reporting an unexpected benefit from the Pfizer-Biontech Covid19 vaccine, Please help to confirm the total number of doses (4 or 6) that patient administered since inconsistent info provided as I have total of 6 injections  vaccinations and 2 boosters. According to the call recording, the patient reported that he received "two injections in 2020 and took two boosters in 2021". He later said "I have total of 6 injections, two vaccinations and two boosters; I got two boosters last year and two boosters this year. Total of 6.Agent states the Caller recieved the original vaccine series in 2020, and had two boosters in 2021.Agent states the Caller reports the vaccines helped with his Karposi's Sarcoma cancer, specifically it helped with the lesions on his legs. gent states the Caller was diagnosed with Karposi's Sarcoma in 1998.Agent states the Caller contacted Medical Information to see if this could be studied in the future. aller states he is not a medical doctor, but he was a scientist in cancer research for many years. aller states he is calling about the Pfizer Covid 19 vaccine. Aller confirms the details as provided by the transfer agent. aller abruptly disconnects from line. One successful outbound call made and report continues. Callerwhat is your phone number if I have to call back?  he only has 20 percent power left in his phone.   No follow-up attempts are possible. No further information is expected.