The heart rate was 245; A blood clot in the caller's neck; It was thought he might have lymphoma; Felt like he had a golf ball in his left arm/that little golf ball in his arm started traveling to his whole body- his back, his chest, legs, calves; Sweating; Didn't feel too great; Breathing was off/trouble breathing; Throat was hurting/sore throat; Neck was swollen; This is a spontaneous report from a contactable consumer. This consumer (patient) reported for himself that:  A 38-year-old male patient received first dose of BNT162B2 (Solution for injection; Lot number: ER8131 or ER8231 and Expiration date were not reported) via an unspecified route of administration, administered in left arm on 18Apr2021 (at the age of 38-year-old) as first dose, single dose for COVID-19 immunization. The patient medical history and concomitant medications were not reported. On 18Apr2021, he went to get the Covid shot through name withheld which Pfizer sponsors and it was done at name withheld. He went there and took the shot. He was told to wait 15 minutes and then left. When he got to car, immediately he felt like he had a golf ball in his left arm. The next couple of days, that little golf ball in his arm started traveling to his whole body. He felt it in his back, his chest, he felt it in his legs. Literally, in the next 3 days, he felt it literally travel through his whole body. He felt it in his calves, it was crazy also mentioned they felt sore or like ball in the arm. He started sweating and didn't feel too great. He thought it was standard side effects and didn't think much of it. A couple of days past by and then Thursday morning, he woke up and his breathing was very off. He clarifies his throat was hurting. He thought it was a sore throat and took some cough medicine and cough drops. Then the next day, it wasn't going away and was still hurting, wasn't getting any better. His breathing was very rough. If he was just standing still like laying down, then felt okay. But if went to move or do something it was very difficult. Again, expecting these symptoms, some people have said these symptoms and he didn't' think much of it. The next morning patient woke up and breathing felt fine. His neck was swollen. He thought maybe he had a sore throat or something. He was taking cough drops to soothe his throat the following day, the throat was still hurting, and it was the same. The patient called the doctor and did a telehealth. The patient told the doctor when he received the first dose Pfizer Covid Vaccine and all his symptoms. The doctor said it is a little unpredictable, nothing the doctor hasn't heard. He went to the doctor office the next day and was hooking to a nebulizer for breathing and prescribed an asthma pump. The doctor thought patient had Lymphoma in the neck. The doctor wanted to go the following day for an ultrasound. He went to the ultrasound and they checked the neck and immediately there were red flags. His heart rate was checked, and the heart rate was 245. The patient was hospitalized from 27Apr2021 to 08May2021. The minute they saw heart rate and started putting intravenous and received treatment to low down heart rate. The heart rate went down to 170 or 165. He had x-rays and a CAT scan done. He had fluids in his heart and fluid in the lung and a blood clot in neck. He had a hole cut open on left side to lungs and the lungs were drained. He went back to the ICU, they ran another CAT scan and X-ray and gave the medication. He does not know if this medication was antibiotics or what the medication was. The CDC received this information because the patient case was so rare. When the CAT scan and X-rays were run again, the fluid is right back up in the lungs. Then he was taken to surgery for the heart. An incision was cut from where itches is to back on the side, a very big incision. The heart was gone into to cut a little piece around the heart. Something was cut out so the heart could drain, and fluid could get out of the heart. While all of this is happening, he wasn't getting any better, was getting worse. The patient health deteriorated, breathing was about 10 percent and was hooked up to a breathing machine. He was sedated at that time and not awake anymore. The machine was keeping him alive. Now, every day for basically five days he was asleep and not knowing what was going on and was tested for Leukemia, cancer, and A to Z every disease you can think of to try to find common ground. Everything came back negative; nothing was wrong with the caller. He was given this or that medication every day and was sedated for about 5 days. Every day of the sedation was getting worse. He was dying and time was ticking. On the 5th day, everything was getting worse. The woman kicked everyone out of the room and went into his mouthpiece on the ventilator that was keeping the alive doing the breathing for the patient. The woman pulled something out of his lung. The woman started pumping him with steroids. What the woman took out of his lung stopped the fluid from going in. The fluid wouldn't fill back up in the lung. Once the woman started giving the steroids, the steroids killed the Pfizer Covid Vaccine. The steroids reversed the Pfizer Covid Vaccine. He was started breathing on his own again. After a couple of hours, the patient finally woke up. The patient is now recovered and has been home the past few weeks on a whole bunch of medication. He is on blood thinners, steroids, and stomach stuff. The outcome of the events was unknown.  Information on Lot/Batch number was available. Additional information has been requested.