heart super tachycardia; Mass in kidney; Currently thought to be RCC; intraventricular conduction delay; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 67-year-old male patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 09Nov2022 as dose 5 (booster), single (Lot number: G56738) at the age of 67 years intramuscular, in arm for covid-19 immunisation. The patient's relevant medical history was not reported. There were no concomitant medications. Vaccination history included: BNT162b2 (DOSE 1, SINGLE, Anatomical Site of Injection: Arm, Route of Administration: Intramuscular, Batch/Lot number: EN6202 / Jun2021), administration date: 09Mar2021, when the patient was 65-year-old, for COVID-19 immunization; BNT162b2 (DOSE 2, SINGLE, Anatomical Site of Injection: Arm, Route of Administration: Intramuscular, Batch/Lot number: ER8733/ 31Jul2021), administration date: 30Mar2021, when the patient was 65-year-old, for COVID-19 immunization; BNT162b2 (DOSE 3 (BOOSTER), SINGLE, Anatomical Site of Injection: Arm, Route of Administration: Intramuscular, Batch/Lot number: FM9992), administration date: 06Oct2021, when the patient was 66-year-old, for COVID-19 immunization; BNT162b2 (DOSE 4 (BOOSTER), SINGLE, Anatomical Site of Injection: Arm, Batch/Lot number: FE3592), administration date: 25Apr2022, when the patient was 66-year-old, for COVID-19 immunization, reaction(s): "minor headache", "body pain", "lack of energy", "body was unable to perform except in small intervals", "experiencing severe and incapacitating full body shaking/tremors and exhaustion", "my body was unable to perform except in small intervals-experiencing severe and incapacitating full body shaking/tremors and exhaustion", "Renal cell carcinoma", "Lower ventricular tachycardia", "extremely low pulse", "missed heart beats". The following information was reported: DEFECT CONDUCTION INTRAVENTRICULAR (non-serious) with onset 02Dec2022, outcome "unknown", described as "intraventricular conduction delay"; RENAL CELL CARCINOMA (medically significant) with onset 23May2023, outcome "unknown", described as "Currently thought to be RCC"; RENAL MASS (non-serious) with onset 23May2023, outcome "unknown", described as "Mass in kidney"; TACHYCARDIA (non-serious), outcome "unknown", described as "heart super tachycardia". The patient underwent the following laboratory tests and procedures: Computerised tomogram: (23May2023) Mass in kidney; Computerised tomogram kidney: (07Jun2023) mass discovered in kidney; (28Jun2023) Unknown results; Echocardiogram: (02Dec2022) intraventricular conduction delay; (07Jul2023) heart rythms back to normal; Electrocardiogram ambulatory: (03Jan2023) 10 day monitor of heart super tachycardia; Metabolic function test: (18May2023) heart structure for normal pro-op for ablation; Scan myocardial perfusion: (16May2023) Unlnown results. Clinical course: the patient had been a manual laborer his entire adult life (over 42 plus years) working outdoors in the extreme environments of (Place). He had never had any health issues or limitations to perform labor-based work. On 24Apr2022, received fourth Pfizer Covid booster with minor headache and body pain for 72 hours. General fatigue and lack of energy followed indefinitely thereafter. By 16May2022 patient started a home project outdoors and in the garage for three weeks: throughout the entire project body was unable to perform except in small intervals - experiencing severe and incapacitating full body shaking/tremors and exhaustion. Contacted my primary care physician and was seen in 08Nov2022. That visit resulted in an immediate EKG test due to extremely low pulse and missed heart beats. Multiple tests were ordered - lab work, echo cardiogram, heart monitor. Finally saw a Cardiologist in Mar2023 who stated it was not normal and serious to have one's heart missing 20% of its beats even when sleeping. More tests were scheduled - nuclear imaging stress test, lab blood tests, CT scan. A dual ventricular heart ablation surgery was performed on 25May2023. This surgery appears to have corrected the heart issue for now. On the 23May2023 CT scan a shadow was located on right kidney. A follow-up CT scan was performed on 07Jun2023 to specifically look at the right kidney and surrounding organs. A mass was found and patient was sent to an Urologist. That appointment occurred on 28Jun2023. The current recommendation is that due to catching this growth early to watch for six months and then rescan in Jan2024.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202300230973 Same patient, different vaccine doses and different event.;