### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I had an episode of rapid heartbeat two weeks ago, my heart dr. did several tests and sent me home with a beta blocker to take every day, and also i am wearing a heart monitor...since i have been wearing the heart monitor, (one week 1/2) i noticed a small area on my right collarbone that looked a little puffy so i felt it and it feels like a small marble moving around...my dr. looked at it and put me on antibiotics...i had a chest xray and chest c/t scan at the hospital march 2nd...my dr. was going to do an xray, but after i told him i had one march 2nd he said ok then he doesnt need to do another one...from what i am reading it sounds like lumps/marbles could be cancerous and i  am extremely scared now...what do you think it most likely is? i was sick in feb. with congestion/cold symptoms???

### output:

Hello, In my opinion, you have a collar bone boil with the infection for which your doctor started antibiotics. CT and x-ray chest bothered you much, and you started worrying about the possibility of cancerous lumps in your collarbone area. By no means, this lump or collar formation is cancerous and is due to the infected boil on the collar bone area. So just forget it as antibiotics would take care of it. Cold and congestion are part of the seasonal illness and should not worry you much. So keep cool. Consult your emergency room, surgeon and physician, if need be, who would treat it accordingly. So don't build up wrong concepts and create more psychic complications in you which would increase risks and costs to you. Hope I have answered your query. Let me know if I can assist you further. 